/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:13:52,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:13:52,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:13:52,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:13:52,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:13:52,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:13:52,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:13:52,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:13:52,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:13:52,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:13:52,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:13:52,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:13:52,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:13:52,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:13:52,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:13:52,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:13:52,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:13:52,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:13:52,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:13:52,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:13:52,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:13:52,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:13:52,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:13:52,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:13:52,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 03:13:52,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 03:13:52,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 03:13:52,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 03:13:52,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 03:13:52,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 03:13:52,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:13:52,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:13:52,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:13:52,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:13:52,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:13:52,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:13:52,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:13:52,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:13:52,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:13:52,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:13:52,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:13:52,390 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-VariableLbe.epf [2023-01-28 03:13:52,405 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:13:52,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:13:52,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:13:52,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:13:52,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:13:52,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:13:52,406 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:13:52,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:13:52,406 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:13:52,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:13:52,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:13:52,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:13:52,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:13:52,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:13:52,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:13:52,407 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:13:52,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:13:52,408 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:13:52,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:13:52,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:13:52,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:13:52,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:13:52,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:13:52,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:13:52,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:13:52,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:13:52,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:13:52,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:13:52,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:13:52,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:13:52,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:13:52,409 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:13:52,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:13:52,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:13:52,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:13:52,621 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:13:52,623 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:13:52,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-01-28 03:13:53,790 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:13:53,933 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:13:53,933 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-01-28 03:13:53,944 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4f93eae/a232e061842245b286ddc4f024663019/FLAG5bae67baf [2023-01-28 03:13:53,955 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4f93eae/a232e061842245b286ddc4f024663019 [2023-01-28 03:13:53,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:13:53,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:13:53,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:13:53,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:13:53,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:13:53,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:13:53" (1/1) ... [2023-01-28 03:13:53,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bf059c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:53, skipping insertion in model container [2023-01-28 03:13:53,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:13:53" (1/1) ... [2023-01-28 03:13:53,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:13:53,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:13:54,081 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c[2135,2148] [2023-01-28 03:13:54,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:13:54,091 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:13:54,103 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c[2135,2148] [2023-01-28 03:13:54,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:13:54,113 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:13:54,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54 WrapperNode [2023-01-28 03:13:54,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:13:54,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:13:54,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:13:54,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:13:54,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,139 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-01-28 03:13:54,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:13:54,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:13:54,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:13:54,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:13:54,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:13:54,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:13:54,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:13:54,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:13:54,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (1/1) ... [2023-01-28 03:13:54,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:13:54,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:13:54,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 03:13:54,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 03:13:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:13:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:13:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:13:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:13:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:13:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 03:13:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 03:13:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:13:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:13:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:13:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:13:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:13:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:13:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:13:54,252 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 03:13:54,361 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:13:54,362 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:13:54,581 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:13:54,589 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:13:54,589 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 03:13:54,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:13:54 BoogieIcfgContainer [2023-01-28 03:13:54,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:13:54,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:13:54,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:13:54,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:13:54,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:13:53" (1/3) ... [2023-01-28 03:13:54,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3b12b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:13:54, skipping insertion in model container [2023-01-28 03:13:54,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:54" (2/3) ... [2023-01-28 03:13:54,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3b12b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:13:54, skipping insertion in model container [2023-01-28 03:13:54,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:13:54" (3/3) ... [2023-01-28 03:13:54,595 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2023-01-28 03:13:54,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:13:54,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:13:54,609 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:13:54,656 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 03:13:54,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 105 transitions, 234 flow [2023-01-28 03:13:54,711 INFO L130 PetriNetUnfolder]: 7/102 cut-off events. [2023-01-28 03:13:54,711 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:13:54,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 7/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-01-28 03:13:54,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 105 transitions, 234 flow [2023-01-28 03:13:54,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 92 transitions, 202 flow [2023-01-28 03:13:54,720 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:13:54,727 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 92 transitions, 202 flow [2023-01-28 03:13:54,728 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 92 transitions, 202 flow [2023-01-28 03:13:54,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 202 flow [2023-01-28 03:13:54,746 INFO L130 PetriNetUnfolder]: 7/92 cut-off events. [2023-01-28 03:13:54,746 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:13:54,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 92 events. 7/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-01-28 03:13:54,748 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-01-28 03:13:56,741 INFO L134 LiptonReduction]: Checked pairs total: 1312 [2023-01-28 03:13:56,742 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-01-28 03:13:56,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:13:56,763 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@180f0abe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:13:56,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 03:13:56,789 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-01-28 03:13:56,789 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:13:56,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:56,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:56,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:56,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:56,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1620298547, now seen corresponding path program 1 times [2023-01-28 03:13:56,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:56,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31573143] [2023-01-28 03:13:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:56,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:57,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:57,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31573143] [2023-01-28 03:13:57,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31573143] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:57,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:57,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 03:13:57,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380225180] [2023-01-28 03:13:57,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:57,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:13:57,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:13:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:13:57,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 181 [2023-01-28 03:13:57,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2023-01-28 03:13:57,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:57,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 181 [2023-01-28 03:13:57,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:57,408 INFO L130 PetriNetUnfolder]: 359/506 cut-off events. [2023-01-28 03:13:57,408 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-01-28 03:13:57,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 506 events. 359/506 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1602 event pairs, 39 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-01-28 03:13:57,415 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-01-28 03:13:57,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-01-28 03:13:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:13:57,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:13:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-01-28 03:13:57,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469613259668509 [2023-01-28 03:13:57,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-01-28 03:13:57,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-01-28 03:13:57,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:57,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-01-28 03:13:57,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-01-28 03:13:57,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:57,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:57,436 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 297 transitions. [2023-01-28 03:13:57,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-01-28 03:13:57,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 03:13:57,440 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-01-28 03:13:57,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-01-28 03:13:57,444 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-01-28 03:13:57,444 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-01-28 03:13:57,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2023-01-28 03:13:57,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:57,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:57,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:13:57,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:57,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash -622319524, now seen corresponding path program 1 times [2023-01-28 03:13:57,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:57,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000829530] [2023-01-28 03:13:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:57,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:57,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000829530] [2023-01-28 03:13:57,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000829530] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:57,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:57,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:13:57,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995013878] [2023-01-28 03:13:57,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:57,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:13:57,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:13:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:13:57,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:13:57,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:57,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:57,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:13:57,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:57,728 INFO L130 PetriNetUnfolder]: 486/764 cut-off events. [2023-01-28 03:13:57,728 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2023-01-28 03:13:57,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 764 events. 486/764 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3182 event pairs, 137 based on Foata normal form. 68/826 useless extension candidates. Maximal degree in co-relation 420. Up to 391 conditions per place. [2023-01-28 03:13:57,732 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 54 selfloop transitions, 5 changer transitions 2/62 dead transitions. [2023-01-28 03:13:57,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 62 transitions, 298 flow [2023-01-28 03:13:57,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:13:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:13:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 460 transitions. [2023-01-28 03:13:57,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082872928176796 [2023-01-28 03:13:57,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 460 transitions. [2023-01-28 03:13:57,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 460 transitions. [2023-01-28 03:13:57,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:57,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 460 transitions. [2023-01-28 03:13:57,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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) [2023-01-28 03:13:57,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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) [2023-01-28 03:13:57,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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) [2023-01-28 03:13:57,742 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 5 states and 460 transitions. [2023-01-28 03:13:57,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 62 transitions, 298 flow [2023-01-28 03:13:57,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 62 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:13:57,744 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 119 flow [2023-01-28 03:13:57,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-01-28 03:13:57,744 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-01-28 03:13:57,745 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 119 flow [2023-01-28 03:13:57,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:57,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:57,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:57,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:13:57,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:57,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1535831546, now seen corresponding path program 2 times [2023-01-28 03:13:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:57,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879641724] [2023-01-28 03:13:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:57,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:57,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879641724] [2023-01-28 03:13:57,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879641724] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:57,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:57,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:13:57,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227829796] [2023-01-28 03:13:57,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:57,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:13:57,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:13:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:13:57,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:13:57,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:57,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:57,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:13:57,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:57,955 INFO L130 PetriNetUnfolder]: 469/738 cut-off events. [2023-01-28 03:13:57,956 INFO L131 PetriNetUnfolder]: For 864/985 co-relation queries the response was YES. [2023-01-28 03:13:57,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 738 events. 469/738 cut-off events. For 864/985 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3069 event pairs, 103 based on Foata normal form. 124/839 useless extension candidates. Maximal degree in co-relation 842. Up to 458 conditions per place. [2023-01-28 03:13:57,959 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 41 selfloop transitions, 5 changer transitions 5/54 dead transitions. [2023-01-28 03:13:57,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 54 transitions, 311 flow [2023-01-28 03:13:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:13:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:13:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-01-28 03:13:57,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248618784530387 [2023-01-28 03:13:57,960 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-01-28 03:13:57,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-01-28 03:13:57,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:57,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-01-28 03:13:57,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-01-28 03:13:57,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:57,963 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:57,963 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 119 flow. Second operand 4 states and 380 transitions. [2023-01-28 03:13:57,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 54 transitions, 311 flow [2023-01-28 03:13:57,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 54 transitions, 301 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 03:13:57,967 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 145 flow [2023-01-28 03:13:57,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-01-28 03:13:57,968 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-01-28 03:13:57,970 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 145 flow [2023-01-28 03:13:57,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:57,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:57,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:57,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 03:13:57,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:57,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:57,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1297497348, now seen corresponding path program 1 times [2023-01-28 03:13:57,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:57,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383985415] [2023-01-28 03:13:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:57,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:58,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:58,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383985415] [2023-01-28 03:13:58,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383985415] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:58,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:58,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:13:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651934063] [2023-01-28 03:13:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:58,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:13:58,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:58,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:13:58,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:13:58,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:13:58,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:58,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:58,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:13:58,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:58,178 INFO L130 PetriNetUnfolder]: 623/1049 cut-off events. [2023-01-28 03:13:58,178 INFO L131 PetriNetUnfolder]: For 2754/2858 co-relation queries the response was YES. [2023-01-28 03:13:58,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 1049 events. 623/1049 cut-off events. For 2754/2858 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5075 event pairs, 191 based on Foata normal form. 164/1201 useless extension candidates. Maximal degree in co-relation 1674. Up to 527 conditions per place. [2023-01-28 03:13:58,183 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 59 selfloop transitions, 6 changer transitions 6/73 dead transitions. [2023-01-28 03:13:58,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 73 transitions, 458 flow [2023-01-28 03:13:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:13:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:13:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 462 transitions. [2023-01-28 03:13:58,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104972375690607 [2023-01-28 03:13:58,185 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 462 transitions. [2023-01-28 03:13:58,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 462 transitions. [2023-01-28 03:13:58,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:58,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 462 transitions. [2023-01-28 03:13:58,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 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) [2023-01-28 03:13:58,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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) [2023-01-28 03:13:58,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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) [2023-01-28 03:13:58,191 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 145 flow. Second operand 5 states and 462 transitions. [2023-01-28 03:13:58,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 73 transitions, 458 flow [2023-01-28 03:13:58,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 449 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 03:13:58,195 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 200 flow [2023-01-28 03:13:58,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-01-28 03:13:58,197 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-01-28 03:13:58,197 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 200 flow [2023-01-28 03:13:58,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:58,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:58,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:58,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 03:13:58,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:58,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash -612746414, now seen corresponding path program 2 times [2023-01-28 03:13:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857015938] [2023-01-28 03:13:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:58,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:58,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857015938] [2023-01-28 03:13:58,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857015938] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:58,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:58,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:13:58,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577805070] [2023-01-28 03:13:58,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:58,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:13:58,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:58,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:13:58,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:13:58,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:13:58,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:58,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:58,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:13:58,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:58,388 INFO L130 PetriNetUnfolder]: 839/1400 cut-off events. [2023-01-28 03:13:58,388 INFO L131 PetriNetUnfolder]: For 4717/5125 co-relation queries the response was YES. [2023-01-28 03:13:58,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5499 conditions, 1400 events. 839/1400 cut-off events. For 4717/5125 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7425 event pairs, 349 based on Foata normal form. 284/1615 useless extension candidates. Maximal degree in co-relation 2061. Up to 835 conditions per place. [2023-01-28 03:13:58,395 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 48 selfloop transitions, 12 changer transitions 3/67 dead transitions. [2023-01-28 03:13:58,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 67 transitions, 527 flow [2023-01-28 03:13:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:13:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:13:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-01-28 03:13:58,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207182320441989 [2023-01-28 03:13:58,396 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-01-28 03:13:58,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-01-28 03:13:58,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:58,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-01-28 03:13:58,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2023-01-28 03:13:58,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:58,399 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:58,399 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 200 flow. Second operand 4 states and 377 transitions. [2023-01-28 03:13:58,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 67 transitions, 527 flow [2023-01-28 03:13:58,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 67 transitions, 510 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 03:13:58,404 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 330 flow [2023-01-28 03:13:58,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-01-28 03:13:58,405 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-01-28 03:13:58,406 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 330 flow [2023-01-28 03:13:58,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:58,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:58,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:58,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 03:13:58,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:58,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1085629665, now seen corresponding path program 1 times [2023-01-28 03:13:58,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:58,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936754123] [2023-01-28 03:13:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:58,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:58,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:58,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936754123] [2023-01-28 03:13:58,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936754123] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:58,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:58,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:13:58,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382375111] [2023-01-28 03:13:58,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:58,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:13:58,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:58,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:13:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:13:58,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:13:58,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:58,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:58,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:13:58,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:58,687 INFO L130 PetriNetUnfolder]: 880/1445 cut-off events. [2023-01-28 03:13:58,687 INFO L131 PetriNetUnfolder]: For 7838/8234 co-relation queries the response was YES. [2023-01-28 03:13:58,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6571 conditions, 1445 events. 880/1445 cut-off events. For 7838/8234 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7323 event pairs, 317 based on Foata normal form. 241/1633 useless extension candidates. Maximal degree in co-relation 2369. Up to 1085 conditions per place. [2023-01-28 03:13:58,695 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 49 selfloop transitions, 8 changer transitions 10/71 dead transitions. [2023-01-28 03:13:58,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 661 flow [2023-01-28 03:13:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:13:58,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:13:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2023-01-28 03:13:58,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220994475138122 [2023-01-28 03:13:58,697 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2023-01-28 03:13:58,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2023-01-28 03:13:58,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:58,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2023-01-28 03:13:58,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 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) [2023-01-28 03:13:58,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:58,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:58,700 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 330 flow. Second operand 4 states and 378 transitions. [2023-01-28 03:13:58,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 661 flow [2023-01-28 03:13:58,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:13:58,706 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 379 flow [2023-01-28 03:13:58,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-01-28 03:13:58,707 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2023-01-28 03:13:58,708 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 379 flow [2023-01-28 03:13:58,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:58,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:58,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:58,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 03:13:58,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:58,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash 477800932, now seen corresponding path program 3 times [2023-01-28 03:13:58,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:58,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416938695] [2023-01-28 03:13:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:58,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:58,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416938695] [2023-01-28 03:13:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416938695] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:58,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:58,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:13:58,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439396064] [2023-01-28 03:13:58,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:58,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:13:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:13:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:13:58,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:13:58,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:58,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:58,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:13:58,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:58,946 INFO L130 PetriNetUnfolder]: 1052/1733 cut-off events. [2023-01-28 03:13:58,946 INFO L131 PetriNetUnfolder]: For 8779/9064 co-relation queries the response was YES. [2023-01-28 03:13:58,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7905 conditions, 1733 events. 1052/1733 cut-off events. For 8779/9064 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 9211 event pairs, 307 based on Foata normal form. 169/1861 useless extension candidates. Maximal degree in co-relation 4650. Up to 894 conditions per place. [2023-01-28 03:13:58,956 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 65 selfloop transitions, 19 changer transitions 19/105 dead transitions. [2023-01-28 03:13:58,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 1055 flow [2023-01-28 03:13:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:13:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:13:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 545 transitions. [2023-01-28 03:13:58,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501841620626151 [2023-01-28 03:13:58,958 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 545 transitions. [2023-01-28 03:13:58,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 545 transitions. [2023-01-28 03:13:58,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:58,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 545 transitions. [2023-01-28 03:13:58,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:58,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 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) [2023-01-28 03:13:58,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 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) [2023-01-28 03:13:58,961 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 379 flow. Second operand 6 states and 545 transitions. [2023-01-28 03:13:58,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 1055 flow [2023-01-28 03:13:58,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 105 transitions, 992 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-01-28 03:13:58,970 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 550 flow [2023-01-28 03:13:58,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-01-28 03:13:58,970 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-01-28 03:13:58,970 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 550 flow [2023-01-28 03:13:58,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:58,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:58,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:58,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 03:13:58,971 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:58,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:58,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1700934463, now seen corresponding path program 2 times [2023-01-28 03:13:58,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:58,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323270821] [2023-01-28 03:13:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:58,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:59,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:59,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323270821] [2023-01-28 03:13:59,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323270821] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:59,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:59,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:13:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853097488] [2023-01-28 03:13:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:59,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:13:59,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:13:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:13:59,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:13:59,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:59,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:59,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:13:59,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:59,166 INFO L130 PetriNetUnfolder]: 1045/1689 cut-off events. [2023-01-28 03:13:59,166 INFO L131 PetriNetUnfolder]: For 10769/11037 co-relation queries the response was YES. [2023-01-28 03:13:59,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 1689 events. 1045/1689 cut-off events. For 10769/11037 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8331 event pairs, 301 based on Foata normal form. 200/1824 useless extension candidates. Maximal degree in co-relation 7762. Up to 1238 conditions per place. [2023-01-28 03:13:59,176 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 60 selfloop transitions, 10 changer transitions 10/86 dead transitions. [2023-01-28 03:13:59,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 86 transitions, 941 flow [2023-01-28 03:13:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:13:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:13:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-01-28 03:13:59,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248618784530387 [2023-01-28 03:13:59,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-01-28 03:13:59,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-01-28 03:13:59,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:59,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-01-28 03:13:59,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-01-28 03:13:59,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:59,179 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:59,179 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 550 flow. Second operand 4 states and 380 transitions. [2023-01-28 03:13:59,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 86 transitions, 941 flow [2023-01-28 03:13:59,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 904 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 03:13:59,191 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 580 flow [2023-01-28 03:13:59,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-01-28 03:13:59,191 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-01-28 03:13:59,191 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 580 flow [2023-01-28 03:13:59,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:59,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:59,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:59,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 03:13:59,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:59,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2003654564, now seen corresponding path program 4 times [2023-01-28 03:13:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:59,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901935184] [2023-01-28 03:13:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:59,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:59,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:59,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901935184] [2023-01-28 03:13:59,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901935184] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:59,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:59,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 03:13:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549759564] [2023-01-28 03:13:59,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:59,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:13:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:13:59,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:13:59,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:13:59,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 580 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:59,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:59,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:13:59,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:59,391 INFO L130 PetriNetUnfolder]: 1002/1586 cut-off events. [2023-01-28 03:13:59,391 INFO L131 PetriNetUnfolder]: For 10884/11184 co-relation queries the response was YES. [2023-01-28 03:13:59,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8309 conditions, 1586 events. 1002/1586 cut-off events. For 10884/11184 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7449 event pairs, 364 based on Foata normal form. 184/1724 useless extension candidates. Maximal degree in co-relation 5291. Up to 1039 conditions per place. [2023-01-28 03:13:59,400 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 56 selfloop transitions, 12 changer transitions 20/90 dead transitions. [2023-01-28 03:13:59,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 970 flow [2023-01-28 03:13:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:13:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:13:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-01-28 03:13:59,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016574585635359 [2023-01-28 03:13:59,402 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-01-28 03:13:59,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-01-28 03:13:59,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:59,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-01-28 03:13:59,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:59,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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) [2023-01-28 03:13:59,404 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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) [2023-01-28 03:13:59,404 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 580 flow. Second operand 5 states and 454 transitions. [2023-01-28 03:13:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 970 flow [2023-01-28 03:13:59,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 935 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-01-28 03:13:59,414 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 597 flow [2023-01-28 03:13:59,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=597, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-01-28 03:13:59,414 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2023-01-28 03:13:59,415 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 597 flow [2023-01-28 03:13:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:59,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:59,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:59,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 03:13:59,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:59,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash 641514423, now seen corresponding path program 3 times [2023-01-28 03:13:59,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:59,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482941671] [2023-01-28 03:13:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:59,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:59,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:59,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482941671] [2023-01-28 03:13:59,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482941671] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:59,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:59,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:13:59,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560091925] [2023-01-28 03:13:59,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:59,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:13:59,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:59,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:13:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:13:59,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:13:59,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:59,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:59,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:13:59,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:59,605 INFO L130 PetriNetUnfolder]: 915/1375 cut-off events. [2023-01-28 03:13:59,605 INFO L131 PetriNetUnfolder]: For 11022/11376 co-relation queries the response was YES. [2023-01-28 03:13:59,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7842 conditions, 1375 events. 915/1375 cut-off events. For 11022/11376 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5997 event pairs, 249 based on Foata normal form. 232/1529 useless extension candidates. Maximal degree in co-relation 6687. Up to 901 conditions per place. [2023-01-28 03:13:59,613 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 54 selfloop transitions, 27 changer transitions 7/94 dead transitions. [2023-01-28 03:13:59,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 94 transitions, 1141 flow [2023-01-28 03:13:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:13:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:13:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2023-01-28 03:13:59,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193370165745856 [2023-01-28 03:13:59,614 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2023-01-28 03:13:59,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2023-01-28 03:13:59,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:59,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2023-01-28 03:13:59,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2023-01-28 03:13:59,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:59,616 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 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) [2023-01-28 03:13:59,616 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 597 flow. Second operand 4 states and 376 transitions. [2023-01-28 03:13:59,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 94 transitions, 1141 flow [2023-01-28 03:13:59,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 1075 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-01-28 03:13:59,624 INFO L231 Difference]: Finished difference. Result has 59 places, 68 transitions, 834 flow [2023-01-28 03:13:59,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=834, PETRI_PLACES=59, PETRI_TRANSITIONS=68} [2023-01-28 03:13:59,624 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2023-01-28 03:13:59,625 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 68 transitions, 834 flow [2023-01-28 03:13:59,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2023-01-28 03:13:59,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:59,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:59,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 03:13:59,625 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:13:59,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1824626704, now seen corresponding path program 1 times [2023-01-28 03:13:59,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:59,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459017095] [2023-01-28 03:13:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:59,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459017095] [2023-01-28 03:13:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459017095] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:13:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340980311] [2023-01-28 03:13:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:59,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:13:59,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:13:59,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:13:59,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 03:13:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:59,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 03:13:59,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:13:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:59,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:13:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340980311] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:13:59,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:13:59,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-28 03:13:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281598210] [2023-01-28 03:13:59,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:13:59,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 03:13:59,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 03:13:59,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-01-28 03:13:59,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:13:59,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 68 transitions, 834 flow. Second operand has 8 states, 8 states have (on average 83.5) internal successors, (668), 8 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:59,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:59,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:13:59,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:00,098 INFO L130 PetriNetUnfolder]: 1086/1555 cut-off events. [2023-01-28 03:14:00,098 INFO L131 PetriNetUnfolder]: For 14468/14605 co-relation queries the response was YES. [2023-01-28 03:14:00,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9774 conditions, 1555 events. 1086/1555 cut-off events. For 14468/14605 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6193 event pairs, 240 based on Foata normal form. 116/1627 useless extension candidates. Maximal degree in co-relation 6510. Up to 1018 conditions per place. [2023-01-28 03:14:00,108 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 81 selfloop transitions, 49 changer transitions 2/136 dead transitions. [2023-01-28 03:14:00,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 136 transitions, 1919 flow [2023-01-28 03:14:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:14:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:14:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 539 transitions. [2023-01-28 03:14:00,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496316758747698 [2023-01-28 03:14:00,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 539 transitions. [2023-01-28 03:14:00,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 539 transitions. [2023-01-28 03:14:00,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:00,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 539 transitions. [2023-01-28 03:14:00,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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) [2023-01-28 03:14:00,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 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) [2023-01-28 03:14:00,112 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 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) [2023-01-28 03:14:00,112 INFO L175 Difference]: Start difference. First operand has 59 places, 68 transitions, 834 flow. Second operand 6 states and 539 transitions. [2023-01-28 03:14:00,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 136 transitions, 1919 flow [2023-01-28 03:14:00,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 136 transitions, 1885 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 03:14:00,130 INFO L231 Difference]: Finished difference. Result has 63 places, 104 transitions, 1582 flow [2023-01-28 03:14:00,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1582, PETRI_PLACES=63, PETRI_TRANSITIONS=104} [2023-01-28 03:14:00,130 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2023-01-28 03:14:00,130 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 104 transitions, 1582 flow [2023-01-28 03:14:00,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.5) internal successors, (668), 8 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:00,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:00,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:00,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 03:14:00,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-28 03:14:00,336 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:00,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1346321687, now seen corresponding path program 1 times [2023-01-28 03:14:00,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:00,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555360884] [2023-01-28 03:14:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:00,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:00,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:00,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555360884] [2023-01-28 03:14:00,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555360884] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:00,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819658248] [2023-01-28 03:14:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:00,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:00,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:00,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:00,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 03:14:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:00,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 03:14:00,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:00,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:00,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819658248] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:00,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:00,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-01-28 03:14:00,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204007201] [2023-01-28 03:14:00,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:00,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:14:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:00,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:14:00,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:14:00,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:14:00,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 104 transitions, 1582 flow. Second operand has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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) [2023-01-28 03:14:00,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:00,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:14:00,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:01,171 INFO L130 PetriNetUnfolder]: 1418/2025 cut-off events. [2023-01-28 03:14:01,171 INFO L131 PetriNetUnfolder]: For 22489/23121 co-relation queries the response was YES. [2023-01-28 03:14:01,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13604 conditions, 2025 events. 1418/2025 cut-off events. For 22489/23121 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8150 event pairs, 48 based on Foata normal form. 155/2070 useless extension candidates. Maximal degree in co-relation 12560. Up to 1439 conditions per place. [2023-01-28 03:14:01,188 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 127 selfloop transitions, 55 changer transitions 2/195 dead transitions. [2023-01-28 03:14:01,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 195 transitions, 2593 flow [2023-01-28 03:14:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:14:01,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:14:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 849 transitions. [2023-01-28 03:14:01,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211786372007366 [2023-01-28 03:14:01,190 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 849 transitions. [2023-01-28 03:14:01,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 849 transitions. [2023-01-28 03:14:01,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:01,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 849 transitions. [2023-01-28 03:14:01,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.33333333333333) internal successors, (849), 9 states have internal predecessors, (849), 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) [2023-01-28 03:14:01,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:01,194 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:01,194 INFO L175 Difference]: Start difference. First operand has 63 places, 104 transitions, 1582 flow. Second operand 9 states and 849 transitions. [2023-01-28 03:14:01,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 195 transitions, 2593 flow [2023-01-28 03:14:01,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 195 transitions, 2405 flow, removed 82 selfloop flow, removed 1 redundant places. [2023-01-28 03:14:01,212 INFO L231 Difference]: Finished difference. Result has 73 places, 135 transitions, 2039 flow [2023-01-28 03:14:01,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2039, PETRI_PLACES=73, PETRI_TRANSITIONS=135} [2023-01-28 03:14:01,213 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2023-01-28 03:14:01,213 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 135 transitions, 2039 flow [2023-01-28 03:14:01,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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) [2023-01-28 03:14:01,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:01,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:01,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:01,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 03:14:01,418 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:01,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:01,418 INFO L85 PathProgramCache]: Analyzing trace with hash 684593127, now seen corresponding path program 2 times [2023-01-28 03:14:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139898197] [2023-01-28 03:14:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:01,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139898197] [2023-01-28 03:14:01,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139898197] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152528621] [2023-01-28 03:14:01,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:14:01,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:01,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:01,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:01,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 03:14:01,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:14:01,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:01,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 03:14:01,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:01,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:01,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:01,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152528621] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:01,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:01,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 10 [2023-01-28 03:14:01,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710767588] [2023-01-28 03:14:01,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:01,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:14:01,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:01,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:14:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:14:01,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:14:01,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 135 transitions, 2039 flow. Second operand has 12 states, 12 states have (on average 87.16666666666667) internal successors, (1046), 12 states have internal predecessors, (1046), 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) [2023-01-28 03:14:01,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:01,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:14:01,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:02,201 INFO L130 PetriNetUnfolder]: 1752/2515 cut-off events. [2023-01-28 03:14:02,201 INFO L131 PetriNetUnfolder]: For 28904/29412 co-relation queries the response was YES. [2023-01-28 03:14:02,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17049 conditions, 2515 events. 1752/2515 cut-off events. For 28904/29412 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10618 event pairs, 188 based on Foata normal form. 149/2542 useless extension candidates. Maximal degree in co-relation 16355. Up to 1963 conditions per place. [2023-01-28 03:14:02,218 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 142 selfloop transitions, 55 changer transitions 2/210 dead transitions. [2023-01-28 03:14:02,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 210 transitions, 2913 flow [2023-01-28 03:14:02,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:14:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:14:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 845 transitions. [2023-01-28 03:14:02,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187231430325353 [2023-01-28 03:14:02,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 845 transitions. [2023-01-28 03:14:02,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 845 transitions. [2023-01-28 03:14:02,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:02,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 845 transitions. [2023-01-28 03:14:02,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.88888888888889) internal successors, (845), 9 states have internal predecessors, (845), 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) [2023-01-28 03:14:02,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:02,224 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:02,224 INFO L175 Difference]: Start difference. First operand has 73 places, 135 transitions, 2039 flow. Second operand 9 states and 845 transitions. [2023-01-28 03:14:02,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 210 transitions, 2913 flow [2023-01-28 03:14:02,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 210 transitions, 2673 flow, removed 108 selfloop flow, removed 1 redundant places. [2023-01-28 03:14:02,248 INFO L231 Difference]: Finished difference. Result has 83 places, 154 transitions, 2238 flow [2023-01-28 03:14:02,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2238, PETRI_PLACES=83, PETRI_TRANSITIONS=154} [2023-01-28 03:14:02,248 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-01-28 03:14:02,248 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 154 transitions, 2238 flow [2023-01-28 03:14:02,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.16666666666667) internal successors, (1046), 12 states have internal predecessors, (1046), 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) [2023-01-28 03:14:02,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:02,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:02,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:02,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:02,454 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:02,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:02,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1615995569, now seen corresponding path program 3 times [2023-01-28 03:14:02,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:02,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037005387] [2023-01-28 03:14:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:02,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:02,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:02,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037005387] [2023-01-28 03:14:02,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037005387] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:02,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919286735] [2023-01-28 03:14:02,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:14:02,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:02,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:02,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:02,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 03:14:02,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:14:02,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:02,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 03:14:02,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:02,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:02,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919286735] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:02,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-01-28 03:14:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609218856] [2023-01-28 03:14:02,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:02,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:14:02,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:14:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:14:02,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:14:02,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 154 transitions, 2238 flow. Second operand has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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) [2023-01-28 03:14:02,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:02,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:14:02,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:03,305 INFO L130 PetriNetUnfolder]: 2212/3181 cut-off events. [2023-01-28 03:14:03,306 INFO L131 PetriNetUnfolder]: For 36433/37003 co-relation queries the response was YES. [2023-01-28 03:14:03,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20923 conditions, 3181 events. 2212/3181 cut-off events. For 36433/37003 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13981 event pairs, 350 based on Foata normal form. 183/3222 useless extension candidates. Maximal degree in co-relation 20423. Up to 2597 conditions per place. [2023-01-28 03:14:03,326 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 173 selfloop transitions, 60 changer transitions 2/246 dead transitions. [2023-01-28 03:14:03,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 246 transitions, 3494 flow [2023-01-28 03:14:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:14:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:14:03,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 845 transitions. [2023-01-28 03:14:03,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187231430325353 [2023-01-28 03:14:03,328 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 845 transitions. [2023-01-28 03:14:03,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 845 transitions. [2023-01-28 03:14:03,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:03,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 845 transitions. [2023-01-28 03:14:03,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.88888888888889) internal successors, (845), 9 states have internal predecessors, (845), 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) [2023-01-28 03:14:03,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:03,332 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:03,332 INFO L175 Difference]: Start difference. First operand has 83 places, 154 transitions, 2238 flow. Second operand 9 states and 845 transitions. [2023-01-28 03:14:03,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 246 transitions, 3494 flow [2023-01-28 03:14:03,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 246 transitions, 3273 flow, removed 88 selfloop flow, removed 2 redundant places. [2023-01-28 03:14:03,361 INFO L231 Difference]: Finished difference. Result has 93 places, 190 transitions, 2823 flow [2023-01-28 03:14:03,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2823, PETRI_PLACES=93, PETRI_TRANSITIONS=190} [2023-01-28 03:14:03,362 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2023-01-28 03:14:03,362 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 190 transitions, 2823 flow [2023-01-28 03:14:03,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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) [2023-01-28 03:14:03,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:03,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:03,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:03,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:03,567 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:03,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash -965213615, now seen corresponding path program 4 times [2023-01-28 03:14:03,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:03,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797973370] [2023-01-28 03:14:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:03,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:03,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:03,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797973370] [2023-01-28 03:14:03,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797973370] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:03,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302575240] [2023-01-28 03:14:03,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:14:03,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:03,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:03,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:03,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 03:14:03,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:14:03,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:03,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 03:14:03,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:03,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:03,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302575240] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:03,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:03,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2023-01-28 03:14:03,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896026245] [2023-01-28 03:14:03,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:03,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 03:14:03,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:03,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 03:14:03,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-28 03:14:03,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:14:03,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 190 transitions, 2823 flow. Second operand has 9 states, 9 states have (on average 87.33333333333333) internal successors, (786), 9 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:03,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:03,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:14:03,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:04,425 INFO L130 PetriNetUnfolder]: 2520/3633 cut-off events. [2023-01-28 03:14:04,425 INFO L131 PetriNetUnfolder]: For 43800/44378 co-relation queries the response was YES. [2023-01-28 03:14:04,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23906 conditions, 3633 events. 2520/3633 cut-off events. For 43800/44378 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16416 event pairs, 494 based on Foata normal form. 175/3660 useless extension candidates. Maximal degree in co-relation 23393. Up to 3113 conditions per place. [2023-01-28 03:14:04,446 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 186 selfloop transitions, 60 changer transitions 2/259 dead transitions. [2023-01-28 03:14:04,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 259 transitions, 3865 flow [2023-01-28 03:14:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:14:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:14:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 839 transitions. [2023-01-28 03:14:04,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150399017802333 [2023-01-28 03:14:04,449 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 839 transitions. [2023-01-28 03:14:04,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 839 transitions. [2023-01-28 03:14:04,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:04,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 839 transitions. [2023-01-28 03:14:04,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.22222222222223) internal successors, (839), 9 states have internal predecessors, (839), 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) [2023-01-28 03:14:04,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:04,453 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:04,453 INFO L175 Difference]: Start difference. First operand has 93 places, 190 transitions, 2823 flow. Second operand 9 states and 839 transitions. [2023-01-28 03:14:04,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 259 transitions, 3865 flow [2023-01-28 03:14:04,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 259 transitions, 3537 flow, removed 152 selfloop flow, removed 1 redundant places. [2023-01-28 03:14:04,497 INFO L231 Difference]: Finished difference. Result has 103 places, 209 transitions, 3016 flow [2023-01-28 03:14:04,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3016, PETRI_PLACES=103, PETRI_TRANSITIONS=209} [2023-01-28 03:14:04,498 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2023-01-28 03:14:04,498 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 209 transitions, 3016 flow [2023-01-28 03:14:04,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.33333333333333) internal successors, (786), 9 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:04,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:04,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:04,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:04,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 03:14:04,703 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:04,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:04,704 INFO L85 PathProgramCache]: Analyzing trace with hash 453609461, now seen corresponding path program 5 times [2023-01-28 03:14:04,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:04,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379616450] [2023-01-28 03:14:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:04,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:04,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379616450] [2023-01-28 03:14:04,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379616450] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935078413] [2023-01-28 03:14:04,904 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:14:04,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:04,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:04,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:04,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 03:14:04,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:14:04,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:04,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 03:14:04,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:05,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:05,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935078413] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:05,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:05,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-01-28 03:14:05,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163692316] [2023-01-28 03:14:05,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:05,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:14:05,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:14:05,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:14:05,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:14:05,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 209 transitions, 3016 flow. Second operand has 10 states, 10 states have (on average 87.7) internal successors, (877), 10 states have internal predecessors, (877), 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) [2023-01-28 03:14:05,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:05,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:14:05,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:05,785 INFO L130 PetriNetUnfolder]: 2914/4205 cut-off events. [2023-01-28 03:14:05,785 INFO L131 PetriNetUnfolder]: For 49997/50637 co-relation queries the response was YES. [2023-01-28 03:14:05,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27200 conditions, 4205 events. 2914/4205 cut-off events. For 49997/50637 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 19652 event pairs, 614 based on Foata normal form. 205/4256 useless extension candidates. Maximal degree in co-relation 26645. Up to 3685 conditions per place. [2023-01-28 03:14:05,812 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 220 selfloop transitions, 61 changer transitions 2/294 dead transitions. [2023-01-28 03:14:05,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 294 transitions, 4461 flow [2023-01-28 03:14:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:14:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:14:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 837 transitions. [2023-01-28 03:14:05,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138121546961326 [2023-01-28 03:14:05,815 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 837 transitions. [2023-01-28 03:14:05,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 837 transitions. [2023-01-28 03:14:05,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:05,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 837 transitions. [2023-01-28 03:14:05,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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) [2023-01-28 03:14:05,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:05,818 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:05,818 INFO L175 Difference]: Start difference. First operand has 103 places, 209 transitions, 3016 flow. Second operand 9 states and 837 transitions. [2023-01-28 03:14:05,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 294 transitions, 4461 flow [2023-01-28 03:14:05,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 294 transitions, 4174 flow, removed 120 selfloop flow, removed 2 redundant places. [2023-01-28 03:14:05,875 INFO L231 Difference]: Finished difference. Result has 113 places, 246 transitions, 3631 flow [2023-01-28 03:14:05,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=2729, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3631, PETRI_PLACES=113, PETRI_TRANSITIONS=246} [2023-01-28 03:14:05,875 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2023-01-28 03:14:05,875 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 246 transitions, 3631 flow [2023-01-28 03:14:05,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.7) internal successors, (877), 10 states have internal predecessors, (877), 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) [2023-01-28 03:14:05,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:05,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:05,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:06,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 03:14:06,082 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:06,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:06,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1955925559, now seen corresponding path program 6 times [2023-01-28 03:14:06,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:06,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172280127] [2023-01-28 03:14:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:06,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:06,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172280127] [2023-01-28 03:14:06,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172280127] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:06,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596751275] [2023-01-28 03:14:06,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:14:06,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:06,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:06,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:06,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 03:14:06,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:14:06,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:06,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 03:14:06,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:06,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:06,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596751275] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:06,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:06,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-01-28 03:14:06,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488874446] [2023-01-28 03:14:06,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:06,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:14:06,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:06,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:14:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:14:06,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-01-28 03:14:06,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 246 transitions, 3631 flow. Second operand has 10 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 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) [2023-01-28 03:14:06,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:06,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-01-28 03:14:06,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:07,081 INFO L130 PetriNetUnfolder]: 3248/4695 cut-off events. [2023-01-28 03:14:07,081 INFO L131 PetriNetUnfolder]: For 58768/59424 co-relation queries the response was YES. [2023-01-28 03:14:07,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30469 conditions, 4695 events. 3248/4695 cut-off events. For 58768/59424 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 22527 event pairs, 766 based on Foata normal form. 219/4762 useless extension candidates. Maximal degree in co-relation 29879. Up to 4143 conditions per place. [2023-01-28 03:14:07,115 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 241 selfloop transitions, 61 changer transitions 2/315 dead transitions. [2023-01-28 03:14:07,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 315 transitions, 4864 flow [2023-01-28 03:14:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 03:14:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 03:14:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 839 transitions. [2023-01-28 03:14:07,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150399017802333 [2023-01-28 03:14:07,117 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 839 transitions. [2023-01-28 03:14:07,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 839 transitions. [2023-01-28 03:14:07,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:07,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 839 transitions. [2023-01-28 03:14:07,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.22222222222223) internal successors, (839), 9 states have internal predecessors, (839), 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) [2023-01-28 03:14:07,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:07,121 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-01-28 03:14:07,121 INFO L175 Difference]: Start difference. First operand has 113 places, 246 transitions, 3631 flow. Second operand 9 states and 839 transitions. [2023-01-28 03:14:07,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 315 transitions, 4864 flow [2023-01-28 03:14:07,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 315 transitions, 4480 flow, removed 180 selfloop flow, removed 1 redundant places. [2023-01-28 03:14:07,190 INFO L231 Difference]: Finished difference. Result has 123 places, 265 transitions, 3829 flow [2023-01-28 03:14:07,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=3247, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3829, PETRI_PLACES=123, PETRI_TRANSITIONS=265} [2023-01-28 03:14:07,190 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2023-01-28 03:14:07,191 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 265 transitions, 3829 flow [2023-01-28 03:14:07,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 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) [2023-01-28 03:14:07,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:07,191 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:07,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:07,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:07,396 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:07,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:07,397 INFO L85 PathProgramCache]: Analyzing trace with hash 398392542, now seen corresponding path program 7 times [2023-01-28 03:14:07,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:07,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484758409] [2023-01-28 03:14:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:07,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484758409] [2023-01-28 03:14:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484758409] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416272087] [2023-01-28 03:14:07,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:14:07,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:07,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:07,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:07,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 03:14:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:07,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:14:07,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:07,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:07,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416272087] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:07,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:07,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-01-28 03:14:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098303951] [2023-01-28 03:14:07,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:07,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:14:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:07,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:14:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:14:07,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:14:07,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 265 transitions, 3829 flow. Second operand has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 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) [2023-01-28 03:14:07,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:07,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:14:07,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:08,799 INFO L130 PetriNetUnfolder]: 6025/8816 cut-off events. [2023-01-28 03:14:08,799 INFO L131 PetriNetUnfolder]: For 95826/96115 co-relation queries the response was YES. [2023-01-28 03:14:08,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53796 conditions, 8816 events. 6025/8816 cut-off events. For 95826/96115 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 45744 event pairs, 1153 based on Foata normal form. 211/8954 useless extension candidates. Maximal degree in co-relation 52165. Up to 2469 conditions per place. [2023-01-28 03:14:08,863 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 384 selfloop transitions, 114 changer transitions 0/502 dead transitions. [2023-01-28 03:14:08,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 502 transitions, 7721 flow [2023-01-28 03:14:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:14:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:14:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 920 transitions. [2023-01-28 03:14:08,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082872928176796 [2023-01-28 03:14:08,866 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 920 transitions. [2023-01-28 03:14:08,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 920 transitions. [2023-01-28 03:14:08,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:08,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 920 transitions. [2023-01-28 03:14:08,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2023-01-28 03:14:08,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 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) [2023-01-28 03:14:08,870 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 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) [2023-01-28 03:14:08,870 INFO L175 Difference]: Start difference. First operand has 123 places, 265 transitions, 3829 flow. Second operand 10 states and 920 transitions. [2023-01-28 03:14:08,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 502 transitions, 7721 flow [2023-01-28 03:14:09,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 502 transitions, 7139 flow, removed 264 selfloop flow, removed 2 redundant places. [2023-01-28 03:14:09,006 INFO L231 Difference]: Finished difference. Result has 137 places, 313 transitions, 4577 flow [2023-01-28 03:14:09,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=3475, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4577, PETRI_PLACES=137, PETRI_TRANSITIONS=313} [2023-01-28 03:14:09,007 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2023-01-28 03:14:09,007 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 313 transitions, 4577 flow [2023-01-28 03:14:09,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 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) [2023-01-28 03:14:09,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:09,007 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:09,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 03:14:09,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 03:14:09,209 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:09,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash 370733874, now seen corresponding path program 8 times [2023-01-28 03:14:09,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:09,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687644087] [2023-01-28 03:14:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:09,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:09,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687644087] [2023-01-28 03:14:09,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687644087] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:09,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605521936] [2023-01-28 03:14:09,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:14:09,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:09,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:09,316 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:09,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 03:14:09,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:14:09,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:09,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:14:09,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:09,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:09,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605521936] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:09,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:09,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:14:09,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516838188] [2023-01-28 03:14:09,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:09,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:14:09,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:09,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:14:09,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:14:09,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:14:09,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 313 transitions, 4577 flow. Second operand has 12 states, 12 states have (on average 82.58333333333333) internal successors, (991), 12 states have internal predecessors, (991), 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) [2023-01-28 03:14:09,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:09,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:14:09,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:10,993 INFO L130 PetriNetUnfolder]: 6565/9804 cut-off events. [2023-01-28 03:14:10,993 INFO L131 PetriNetUnfolder]: For 131046/131428 co-relation queries the response was YES. [2023-01-28 03:14:11,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60324 conditions, 9804 events. 6565/9804 cut-off events. For 131046/131428 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 55284 event pairs, 1032 based on Foata normal form. 379/10130 useless extension candidates. Maximal degree in co-relation 58619. Up to 3362 conditions per place. [2023-01-28 03:14:11,070 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 542 selfloop transitions, 161 changer transitions 0/707 dead transitions. [2023-01-28 03:14:11,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 707 transitions, 10612 flow [2023-01-28 03:14:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 03:14:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 03:14:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1084 transitions. [2023-01-28 03:14:11,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990791896869245 [2023-01-28 03:14:11,073 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1084 transitions. [2023-01-28 03:14:11,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1084 transitions. [2023-01-28 03:14:11,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:11,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1084 transitions. [2023-01-28 03:14:11,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 90.33333333333333) internal successors, (1084), 12 states have internal predecessors, (1084), 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) [2023-01-28 03:14:11,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 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) [2023-01-28 03:14:11,078 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 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) [2023-01-28 03:14:11,078 INFO L175 Difference]: Start difference. First operand has 137 places, 313 transitions, 4577 flow. Second operand 12 states and 1084 transitions. [2023-01-28 03:14:11,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 707 transitions, 10612 flow [2023-01-28 03:14:11,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 707 transitions, 10519 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 03:14:11,350 INFO L231 Difference]: Finished difference. Result has 152 places, 399 transitions, 6312 flow [2023-01-28 03:14:11,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=4507, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6312, PETRI_PLACES=152, PETRI_TRANSITIONS=399} [2023-01-28 03:14:11,351 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2023-01-28 03:14:11,351 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 399 transitions, 6312 flow [2023-01-28 03:14:11,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 82.58333333333333) internal successors, (991), 12 states have internal predecessors, (991), 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) [2023-01-28 03:14:11,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:11,351 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:11,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:11,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:11,557 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:11,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:11,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1508408662, now seen corresponding path program 9 times [2023-01-28 03:14:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:11,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293629510] [2023-01-28 03:14:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:11,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293629510] [2023-01-28 03:14:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293629510] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231414857] [2023-01-28 03:14:11,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:14:11,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:11,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:11,666 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:11,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 03:14:11,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:14:11,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:11,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:14:11,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:11,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231414857] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:11,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:11,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-01-28 03:14:11,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032298617] [2023-01-28 03:14:11,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:11,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:14:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:14:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:14:11,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-01-28 03:14:11,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 399 transitions, 6312 flow. Second operand has 13 states, 13 states have (on average 79.61538461538461) internal successors, (1035), 13 states have internal predecessors, (1035), 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) [2023-01-28 03:14:11,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:11,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-01-28 03:14:11,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:14,435 INFO L130 PetriNetUnfolder]: 9129/13642 cut-off events. [2023-01-28 03:14:14,435 INFO L131 PetriNetUnfolder]: For 192789/192789 co-relation queries the response was YES. [2023-01-28 03:14:14,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96810 conditions, 13642 events. 9129/13642 cut-off events. For 192789/192789 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 79594 event pairs, 1429 based on Foata normal form. 136/13778 useless extension candidates. Maximal degree in co-relation 94851. Up to 3821 conditions per place. [2023-01-28 03:14:14,533 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 482 selfloop transitions, 314 changer transitions 0/796 dead transitions. [2023-01-28 03:14:14,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 796 transitions, 14072 flow [2023-01-28 03:14:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 03:14:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 03:14:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1655 transitions. [2023-01-28 03:14:14,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4812445478336726 [2023-01-28 03:14:14,535 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1655 transitions. [2023-01-28 03:14:14,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1655 transitions. [2023-01-28 03:14:14,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:14,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1655 transitions. [2023-01-28 03:14:14,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 87.10526315789474) internal successors, (1655), 19 states have internal predecessors, (1655), 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) [2023-01-28 03:14:14,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 181.0) internal successors, (3620), 20 states have internal predecessors, (3620), 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) [2023-01-28 03:14:14,564 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 181.0) internal successors, (3620), 20 states have internal predecessors, (3620), 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) [2023-01-28 03:14:14,564 INFO L175 Difference]: Start difference. First operand has 152 places, 399 transitions, 6312 flow. Second operand 19 states and 1655 transitions. [2023-01-28 03:14:14,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 796 transitions, 14072 flow [2023-01-28 03:14:15,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 796 transitions, 13414 flow, removed 239 selfloop flow, removed 1 redundant places. [2023-01-28 03:14:15,278 INFO L231 Difference]: Finished difference. Result has 181 places, 544 transitions, 9924 flow [2023-01-28 03:14:15,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=5960, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9924, PETRI_PLACES=181, PETRI_TRANSITIONS=544} [2023-01-28 03:14:15,284 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2023-01-28 03:14:15,284 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 544 transitions, 9924 flow [2023-01-28 03:14:15,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.61538461538461) internal successors, (1035), 13 states have internal predecessors, (1035), 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) [2023-01-28 03:14:15,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:15,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:15,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:15,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:15,497 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:15,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1869920993, now seen corresponding path program 10 times [2023-01-28 03:14:15,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:15,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205781584] [2023-01-28 03:14:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:15,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:15,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:15,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205781584] [2023-01-28 03:14:15,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205781584] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:15,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134484794] [2023-01-28 03:14:15,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:14:15,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:15,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:15,615 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:15,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 03:14:15,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:14:15,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:15,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:14:15,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:15,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:15,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134484794] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:15,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:15,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 03:14:15,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162026213] [2023-01-28 03:14:15,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:15,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:14:15,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:15,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:14:15,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:14:15,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:14:15,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 544 transitions, 9924 flow. Second operand has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 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) [2023-01-28 03:14:15,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:15,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:14:15,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:18,759 INFO L130 PetriNetUnfolder]: 9529/14689 cut-off events. [2023-01-28 03:14:18,759 INFO L131 PetriNetUnfolder]: For 321607/321954 co-relation queries the response was YES. [2023-01-28 03:14:18,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112168 conditions, 14689 events. 9529/14689 cut-off events. For 321607/321954 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 93071 event pairs, 1858 based on Foata normal form. 651/15306 useless extension candidates. Maximal degree in co-relation 110057. Up to 5162 conditions per place. [2023-01-28 03:14:18,985 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 627 selfloop transitions, 309 changer transitions 57/1000 dead transitions. [2023-01-28 03:14:18,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 1000 transitions, 19252 flow [2023-01-28 03:14:18,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 03:14:18,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 03:14:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1076 transitions. [2023-01-28 03:14:18,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4953959484346225 [2023-01-28 03:14:18,987 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1076 transitions. [2023-01-28 03:14:18,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1076 transitions. [2023-01-28 03:14:18,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:18,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1076 transitions. [2023-01-28 03:14:18,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 89.66666666666667) internal successors, (1076), 12 states have internal predecessors, (1076), 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) [2023-01-28 03:14:18,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 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) [2023-01-28 03:14:18,990 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 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) [2023-01-28 03:14:18,990 INFO L175 Difference]: Start difference. First operand has 181 places, 544 transitions, 9924 flow. Second operand 12 states and 1076 transitions. [2023-01-28 03:14:18,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 1000 transitions, 19252 flow [2023-01-28 03:14:20,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 1000 transitions, 18400 flow, removed 426 selfloop flow, removed 0 redundant places. [2023-01-28 03:14:20,525 INFO L231 Difference]: Finished difference. Result has 196 places, 662 transitions, 12095 flow [2023-01-28 03:14:20,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=9340, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12095, PETRI_PLACES=196, PETRI_TRANSITIONS=662} [2023-01-28 03:14:20,526 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2023-01-28 03:14:20,526 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 662 transitions, 12095 flow [2023-01-28 03:14:20,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 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) [2023-01-28 03:14:20,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:20,526 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:20,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 03:14:20,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-01-28 03:14:20,731 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:20,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash 759710336, now seen corresponding path program 11 times [2023-01-28 03:14:20,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:20,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068712354] [2023-01-28 03:14:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:20,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068712354] [2023-01-28 03:14:20,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068712354] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012390798] [2023-01-28 03:14:20,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:14:20,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:20,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:20,958 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:20,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 03:14:21,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:14:21,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:21,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:14:21,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:21,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:21,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012390798] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:21,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:21,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-28 03:14:21,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335539822] [2023-01-28 03:14:21,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:21,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:14:21,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:14:21,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:14:21,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:14:21,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 662 transitions, 12095 flow. Second operand has 16 states, 16 states have (on average 82.1875) internal successors, (1315), 16 states have internal predecessors, (1315), 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) [2023-01-28 03:14:21,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:21,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:14:21,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:25,440 INFO L130 PetriNetUnfolder]: 12256/18912 cut-off events. [2023-01-28 03:14:25,440 INFO L131 PetriNetUnfolder]: For 510180/511167 co-relation queries the response was YES. [2023-01-28 03:14:25,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154470 conditions, 18912 events. 12256/18912 cut-off events. For 510180/511167 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 125729 event pairs, 3713 based on Foata normal form. 525/19315 useless extension candidates. Maximal degree in co-relation 153036. Up to 7877 conditions per place. [2023-01-28 03:14:25,660 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 538 selfloop transitions, 527 changer transitions 0/1074 dead transitions. [2023-01-28 03:14:25,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 1074 transitions, 21588 flow [2023-01-28 03:14:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 03:14:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 03:14:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1386 transitions. [2023-01-28 03:14:25,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104972375690607 [2023-01-28 03:14:25,674 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1386 transitions. [2023-01-28 03:14:25,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1386 transitions. [2023-01-28 03:14:25,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:25,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1386 transitions. [2023-01-28 03:14:25,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 92.4) internal successors, (1386), 15 states have internal predecessors, (1386), 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) [2023-01-28 03:14:25,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 181.0) internal successors, (2896), 16 states have internal predecessors, (2896), 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) [2023-01-28 03:14:25,679 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 181.0) internal successors, (2896), 16 states have internal predecessors, (2896), 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) [2023-01-28 03:14:25,680 INFO L175 Difference]: Start difference. First operand has 196 places, 662 transitions, 12095 flow. Second operand 15 states and 1386 transitions. [2023-01-28 03:14:25,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 1074 transitions, 21588 flow [2023-01-28 03:14:28,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 1074 transitions, 20884 flow, removed 352 selfloop flow, removed 0 redundant places. [2023-01-28 03:14:28,457 INFO L231 Difference]: Finished difference. Result has 218 places, 808 transitions, 16694 flow [2023-01-28 03:14:28,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=11895, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16694, PETRI_PLACES=218, PETRI_TRANSITIONS=808} [2023-01-28 03:14:28,458 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2023-01-28 03:14:28,458 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 808 transitions, 16694 flow [2023-01-28 03:14:28,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 82.1875) internal successors, (1315), 16 states have internal predecessors, (1315), 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) [2023-01-28 03:14:28,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:28,459 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:28,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:28,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-28 03:14:28,663 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:28,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1097498205, now seen corresponding path program 12 times [2023-01-28 03:14:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:28,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428487328] [2023-01-28 03:14:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:28,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:28,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428487328] [2023-01-28 03:14:28,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428487328] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969911075] [2023-01-28 03:14:28,826 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:14:28,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:28,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:28,827 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:28,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 03:14:28,894 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:14:28,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:28,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:14:28,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:28,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:28,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969911075] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:28,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:28,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-28 03:14:28,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446835751] [2023-01-28 03:14:28,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:28,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:14:28,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:28,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:14:28,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:14:28,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-01-28 03:14:28,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 808 transitions, 16694 flow. Second operand has 16 states, 16 states have (on average 79.5625) internal successors, (1273), 16 states have internal predecessors, (1273), 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) [2023-01-28 03:14:28,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:28,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-01-28 03:14:28,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:35,681 INFO L130 PetriNetUnfolder]: 16344/24921 cut-off events. [2023-01-28 03:14:35,682 INFO L131 PetriNetUnfolder]: For 621132/621132 co-relation queries the response was YES. [2023-01-28 03:14:35,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222877 conditions, 24921 events. 16344/24921 cut-off events. For 621132/621132 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 168448 event pairs, 1979 based on Foata normal form. 384/25305 useless extension candidates. Maximal degree in co-relation 219924. Up to 7259 conditions per place. [2023-01-28 03:14:36,010 INFO L137 encePairwiseOnDemand]: 173/181 looper letters, 744 selfloop transitions, 870 changer transitions 24/1638 dead transitions. [2023-01-28 03:14:36,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1638 transitions, 39416 flow [2023-01-28 03:14:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-01-28 03:14:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-01-28 03:14:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3424 transitions. [2023-01-28 03:14:36,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47292817679558014 [2023-01-28 03:14:36,014 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3424 transitions. [2023-01-28 03:14:36,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3424 transitions. [2023-01-28 03:14:36,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:36,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3424 transitions. [2023-01-28 03:14:36,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 85.6) internal successors, (3424), 40 states have internal predecessors, (3424), 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) [2023-01-28 03:14:36,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 181.0) internal successors, (7421), 41 states have internal predecessors, (7421), 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) [2023-01-28 03:14:36,158 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 181.0) internal successors, (7421), 41 states have internal predecessors, (7421), 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) [2023-01-28 03:14:36,158 INFO L175 Difference]: Start difference. First operand has 218 places, 808 transitions, 16694 flow. Second operand 40 states and 3424 transitions. [2023-01-28 03:14:36,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1638 transitions, 39416 flow [2023-01-28 03:14:39,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 1638 transitions, 38159 flow, removed 281 selfloop flow, removed 4 redundant places. [2023-01-28 03:14:39,476 INFO L231 Difference]: Finished difference. Result has 277 places, 1239 transitions, 30160 flow [2023-01-28 03:14:39,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=16000, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=30160, PETRI_PLACES=277, PETRI_TRANSITIONS=1239} [2023-01-28 03:14:39,477 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 248 predicate places. [2023-01-28 03:14:39,477 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 1239 transitions, 30160 flow [2023-01-28 03:14:39,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.5625) internal successors, (1273), 16 states have internal predecessors, (1273), 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) [2023-01-28 03:14:39,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:39,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:39,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:39,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-01-28 03:14:39,682 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:39,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -675327254, now seen corresponding path program 13 times [2023-01-28 03:14:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:39,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943657877] [2023-01-28 03:14:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943657877] [2023-01-28 03:14:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943657877] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746885202] [2023-01-28 03:14:39,804 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:14:39,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:39,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:39,805 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:39,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 03:14:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:39,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:14:39,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:39,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:39,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746885202] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:39,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:39,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 03:14:39,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373486479] [2023-01-28 03:14:39,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:39,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:14:39,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:39,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:14:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:14:39,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:14:39,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 1239 transitions, 30160 flow. Second operand has 15 states, 15 states have (on average 82.26666666666667) internal successors, (1234), 15 states have internal predecessors, (1234), 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) [2023-01-28 03:14:39,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:39,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:14:39,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:49,669 INFO L130 PetriNetUnfolder]: 17362/27169 cut-off events. [2023-01-28 03:14:49,670 INFO L131 PetriNetUnfolder]: For 973421/974450 co-relation queries the response was YES. [2023-01-28 03:14:49,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258734 conditions, 27169 events. 17362/27169 cut-off events. For 973421/974450 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 196745 event pairs, 2900 based on Foata normal form. 954/28070 useless extension candidates. Maximal degree in co-relation 256737. Up to 8079 conditions per place. [2023-01-28 03:14:50,108 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 942 selfloop transitions, 837 changer transitions 31/1825 dead transitions. [2023-01-28 03:14:50,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 1825 transitions, 44035 flow [2023-01-28 03:14:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 03:14:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 03:14:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1914 transitions. [2023-01-28 03:14:50,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035516969218626 [2023-01-28 03:14:50,118 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1914 transitions. [2023-01-28 03:14:50,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1914 transitions. [2023-01-28 03:14:50,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:14:50,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1914 transitions. [2023-01-28 03:14:50,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 91.14285714285714) internal successors, (1914), 21 states have internal predecessors, (1914), 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) [2023-01-28 03:14:50,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 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) [2023-01-28 03:14:50,133 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 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) [2023-01-28 03:14:50,134 INFO L175 Difference]: Start difference. First operand has 277 places, 1239 transitions, 30160 flow. Second operand 21 states and 1914 transitions. [2023-01-28 03:14:50,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 1825 transitions, 44035 flow [2023-01-28 03:14:55,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 1825 transitions, 39708 flow, removed 1774 selfloop flow, removed 3 redundant places. [2023-01-28 03:14:55,595 INFO L231 Difference]: Finished difference. Result has 301 places, 1314 transitions, 30347 flow [2023-01-28 03:14:55,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=25900, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=723, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=30347, PETRI_PLACES=301, PETRI_TRANSITIONS=1314} [2023-01-28 03:14:55,596 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 272 predicate places. [2023-01-28 03:14:55,596 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 1314 transitions, 30347 flow [2023-01-28 03:14:55,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 82.26666666666667) internal successors, (1234), 15 states have internal predecessors, (1234), 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) [2023-01-28 03:14:55,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:14:55,597 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:14:55,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 03:14:55,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:55,802 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:14:55,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:14:55,803 INFO L85 PathProgramCache]: Analyzing trace with hash 421066253, now seen corresponding path program 14 times [2023-01-28 03:14:55,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:14:55,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583177138] [2023-01-28 03:14:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:14:55,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:14:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:14:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:14:55,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:14:55,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583177138] [2023-01-28 03:14:55,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583177138] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:14:55,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595063238] [2023-01-28 03:14:55,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:14:55,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:14:55,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:14:55,911 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:14:55,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 03:14:55,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:14:55,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:14:55,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:14:55,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:14:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:56,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:56,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595063238] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:56,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:56,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 03:14:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406704705] [2023-01-28 03:14:56,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 03:14:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 03:14:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-01-28 03:14:56,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-01-28 03:14:56,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 1314 transitions, 30347 flow. Second operand has 17 states, 17 states have (on average 79.6470588235294) internal successors, (1354), 17 states have internal predecessors, (1354), 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) [2023-01-28 03:14:56,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:56,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-01-28 03:14:56,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:15:10,670 INFO L130 PetriNetUnfolder]: 20220/32024 cut-off events. [2023-01-28 03:15:10,670 INFO L131 PetriNetUnfolder]: For 1011905/1011905 co-relation queries the response was YES. [2023-01-28 03:15:11,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311955 conditions, 32024 events. 20220/32024 cut-off events. For 1011905/1011905 co-relation queries the response was YES. Maximal size of possible extension queue 1400. Compared 241242 event pairs, 1279 based on Foata normal form. 904/32928 useless extension candidates. Maximal degree in co-relation 310180. Up to 9943 conditions per place. [2023-01-28 03:15:11,358 INFO L137 encePairwiseOnDemand]: 172/181 looper letters, 1617 selfloop transitions, 1264 changer transitions 50/2931 dead transitions. [2023-01-28 03:15:11,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 2931 transitions, 72409 flow [2023-01-28 03:15:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-01-28 03:15:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2023-01-28 03:15:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 8993 transitions. [2023-01-28 03:15:11,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46434656890587084 [2023-01-28 03:15:11,365 INFO L72 ComplementDD]: Start complementDD. Operand 107 states and 8993 transitions. [2023-01-28 03:15:11,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 8993 transitions. [2023-01-28 03:15:11,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:15:11,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 107 states and 8993 transitions. [2023-01-28 03:15:11,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 108 states, 107 states have (on average 84.04672897196262) internal successors, (8993), 107 states have internal predecessors, (8993), 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) [2023-01-28 03:15:11,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 108 states, 108 states have (on average 181.0) internal successors, (19548), 108 states have internal predecessors, (19548), 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) [2023-01-28 03:15:11,390 INFO L81 ComplementDD]: Finished complementDD. Result has 108 states, 108 states have (on average 181.0) internal successors, (19548), 108 states have internal predecessors, (19548), 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) [2023-01-28 03:15:11,390 INFO L175 Difference]: Start difference. First operand has 301 places, 1314 transitions, 30347 flow. Second operand 107 states and 8993 transitions. [2023-01-28 03:15:11,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 2931 transitions, 72409 flow [2023-01-28 03:15:19,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 2931 transitions, 69443 flow, removed 955 selfloop flow, removed 8 redundant places. [2023-01-28 03:15:19,510 INFO L231 Difference]: Finished difference. Result has 457 places, 1751 transitions, 45382 flow [2023-01-28 03:15:19,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=28313, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=832, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=45382, PETRI_PLACES=457, PETRI_TRANSITIONS=1751} [2023-01-28 03:15:19,511 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 428 predicate places. [2023-01-28 03:15:19,511 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 1751 transitions, 45382 flow [2023-01-28 03:15:19,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.6470588235294) internal successors, (1354), 17 states have internal predecessors, (1354), 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) [2023-01-28 03:15:19,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:15:19,512 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:15:19,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-28 03:15:19,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:19,716 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:15:19,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:15:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1130474012, now seen corresponding path program 15 times [2023-01-28 03:15:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:15:19,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645128309] [2023-01-28 03:15:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:15:19,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:15:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:15:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:15:19,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:15:19,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645128309] [2023-01-28 03:15:19,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645128309] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:15:19,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583489182] [2023-01-28 03:15:19,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:15:19,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:19,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:15:19,788 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:15:19,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 03:15:19,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:15:19,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:15:19,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:15:19,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:15:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:15:19,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:15:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:15:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583489182] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:15:19,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:15:19,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-01-28 03:15:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009666521] [2023-01-28 03:15:19,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:15:19,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:15:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:15:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:15:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:15:19,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-01-28 03:15:19,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1751 transitions, 45382 flow. Second operand has 14 states, 14 states have (on average 80.35714285714286) internal successors, (1125), 14 states have internal predecessors, (1125), 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) [2023-01-28 03:15:19,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:15:19,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-01-28 03:15:19,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:15:38,370 INFO L130 PetriNetUnfolder]: 22490/35283 cut-off events. [2023-01-28 03:15:38,370 INFO L131 PetriNetUnfolder]: For 1898312/1898312 co-relation queries the response was YES. [2023-01-28 03:15:39,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413375 conditions, 35283 events. 22490/35283 cut-off events. For 1898312/1898312 co-relation queries the response was YES. Maximal size of possible extension queue 1597. Compared 264287 event pairs, 4018 based on Foata normal form. 448/35731 useless extension candidates. Maximal degree in co-relation 411626. Up to 12065 conditions per place. [2023-01-28 03:15:39,482 INFO L137 encePairwiseOnDemand]: 173/181 looper letters, 1269 selfloop transitions, 1128 changer transitions 10/2407 dead transitions. [2023-01-28 03:15:39,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 2407 transitions, 68462 flow [2023-01-28 03:15:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 03:15:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 03:15:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2106 transitions. [2023-01-28 03:15:39,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48480662983425415 [2023-01-28 03:15:39,485 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2106 transitions. [2023-01-28 03:15:39,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2106 transitions. [2023-01-28 03:15:39,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:15:39,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2106 transitions. [2023-01-28 03:15:39,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 87.75) internal successors, (2106), 24 states have internal predecessors, (2106), 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) [2023-01-28 03:15:39,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 181.0) internal successors, (4525), 25 states have internal predecessors, (4525), 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) [2023-01-28 03:15:39,490 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 181.0) internal successors, (4525), 25 states have internal predecessors, (4525), 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) [2023-01-28 03:15:39,490 INFO L175 Difference]: Start difference. First operand has 457 places, 1751 transitions, 45382 flow. Second operand 24 states and 2106 transitions. [2023-01-28 03:15:39,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 2407 transitions, 68462 flow [2023-01-28 03:15:58,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 2407 transitions, 58728 flow, removed 4124 selfloop flow, removed 16 redundant places. [2023-01-28 03:15:58,258 INFO L231 Difference]: Finished difference. Result has 477 places, 1949 transitions, 47880 flow [2023-01-28 03:15:58,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=38967, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=935, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=47880, PETRI_PLACES=477, PETRI_TRANSITIONS=1949} [2023-01-28 03:15:58,260 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 448 predicate places. [2023-01-28 03:15:58,260 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1949 transitions, 47880 flow [2023-01-28 03:15:58,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 80.35714285714286) internal successors, (1125), 14 states have internal predecessors, (1125), 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) [2023-01-28 03:15:58,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:15:58,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:15:58,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 03:15:58,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 03:15:58,465 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:15:58,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:15:58,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1061750104, now seen corresponding path program 16 times [2023-01-28 03:15:58,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:15:58,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313555401] [2023-01-28 03:15:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:15:58,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:15:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:15:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:15:58,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:15:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313555401] [2023-01-28 03:15:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313555401] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:15:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460970399] [2023-01-28 03:15:58,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:15:58,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:58,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:15:58,556 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:15:58,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 03:15:58,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:15:58,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:15:58,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:15:58,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:15:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:15:58,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:15:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:15:58,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460970399] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:15:58,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:15:58,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-01-28 03:15:58,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53103595] [2023-01-28 03:15:58,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:15:58,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:15:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:15:58,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:15:58,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:15:58,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:15:58,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1949 transitions, 47880 flow. Second operand has 15 states, 15 states have (on average 82.4) internal successors, (1236), 15 states have internal predecessors, (1236), 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) [2023-01-28 03:15:58,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:15:58,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:15:58,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:16:21,807 INFO L130 PetriNetUnfolder]: 27906/43562 cut-off events. [2023-01-28 03:16:21,807 INFO L131 PetriNetUnfolder]: For 2834220/2835265 co-relation queries the response was YES. [2023-01-28 03:16:23,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505351 conditions, 43562 events. 27906/43562 cut-off events. For 2834220/2835265 co-relation queries the response was YES. Maximal size of possible extension queue 2022. Compared 334716 event pairs, 4339 based on Foata normal form. 871/44253 useless extension candidates. Maximal degree in co-relation 502266. Up to 15937 conditions per place. [2023-01-28 03:16:23,840 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 1222 selfloop transitions, 1536 changer transitions 10/2793 dead transitions. [2023-01-28 03:16:23,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 2793 transitions, 73383 flow [2023-01-28 03:16:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 03:16:23,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 03:16:23,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1911 transitions. [2023-01-28 03:16:23,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027624309392266 [2023-01-28 03:16:23,848 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1911 transitions. [2023-01-28 03:16:23,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1911 transitions. [2023-01-28 03:16:23,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:16:23,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1911 transitions. [2023-01-28 03:16:23,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 91.0) internal successors, (1911), 21 states have internal predecessors, (1911), 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) [2023-01-28 03:16:23,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 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) [2023-01-28 03:16:23,855 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 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) [2023-01-28 03:16:23,855 INFO L175 Difference]: Start difference. First operand has 477 places, 1949 transitions, 47880 flow. Second operand 21 states and 1911 transitions. [2023-01-28 03:16:23,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 2793 transitions, 73383 flow [2023-01-28 03:16:49,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 2793 transitions, 70522 flow, removed 1040 selfloop flow, removed 2 redundant places. [2023-01-28 03:16:49,707 INFO L231 Difference]: Finished difference. Result has 501 places, 2275 transitions, 60052 flow [2023-01-28 03:16:49,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=45422, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=60052, PETRI_PLACES=501, PETRI_TRANSITIONS=2275} [2023-01-28 03:16:49,709 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 472 predicate places. [2023-01-28 03:16:49,709 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 2275 transitions, 60052 flow [2023-01-28 03:16:49,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 82.4) internal successors, (1236), 15 states have internal predecessors, (1236), 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) [2023-01-28 03:16:49,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:16:49,710 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:16:49,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 03:16:49,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-01-28 03:16:49,914 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:16:49,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:16:49,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1702446798, now seen corresponding path program 17 times [2023-01-28 03:16:49,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:16:49,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987047746] [2023-01-28 03:16:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:16:49,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:16:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:16:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:16:49,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:16:49,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987047746] [2023-01-28 03:16:49,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987047746] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:16:49,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150419168] [2023-01-28 03:16:49,984 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:16:49,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:16:49,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:16:50,001 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:16:50,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 03:16:50,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:16:50,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:16:50,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:16:50,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:16:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:16:50,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:16:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:16:50,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150419168] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:16:50,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:16:50,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-01-28 03:16:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70085230] [2023-01-28 03:16:50,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:16:50,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 03:16:50,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:16:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 03:16:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:16:50,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:16:50,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 2275 transitions, 60052 flow. Second operand has 14 states, 14 states have (on average 82.42857142857143) internal successors, (1154), 14 states have internal predecessors, (1154), 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) [2023-01-28 03:16:50,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:16:50,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:16:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:17:27,412 INFO L130 PetriNetUnfolder]: 36739/58795 cut-off events. [2023-01-28 03:17:27,412 INFO L131 PetriNetUnfolder]: For 3812895/3814653 co-relation queries the response was YES. [2023-01-28 03:17:30,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684475 conditions, 58795 events. 36739/58795 cut-off events. For 3812895/3814653 co-relation queries the response was YES. Maximal size of possible extension queue 2778. Compared 492327 event pairs, 7925 based on Foata normal form. 1620/60211 useless extension candidates. Maximal degree in co-relation 682787. Up to 25301 conditions per place. [2023-01-28 03:17:30,485 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 2409 selfloop transitions, 1221 changer transitions 83/3738 dead transitions. [2023-01-28 03:17:30,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 3738 transitions, 99381 flow [2023-01-28 03:17:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 03:17:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 03:17:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2068 transitions. [2023-01-28 03:17:30,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967571462887341 [2023-01-28 03:17:30,487 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2068 transitions. [2023-01-28 03:17:30,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2068 transitions. [2023-01-28 03:17:30,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:17:30,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2068 transitions. [2023-01-28 03:17:30,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 89.91304347826087) internal successors, (2068), 23 states have internal predecessors, (2068), 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) [2023-01-28 03:17:30,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 181.0) internal successors, (4344), 24 states have internal predecessors, (4344), 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) [2023-01-28 03:17:30,492 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 181.0) internal successors, (4344), 24 states have internal predecessors, (4344), 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) [2023-01-28 03:17:30,492 INFO L175 Difference]: Start difference. First operand has 501 places, 2275 transitions, 60052 flow. Second operand 23 states and 2068 transitions. [2023-01-28 03:17:30,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 3738 transitions, 99381 flow [2023-01-28 03:18:14,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 3738 transitions, 95826 flow, removed 773 selfloop flow, removed 6 redundant places. [2023-01-28 03:18:15,019 INFO L231 Difference]: Finished difference. Result has 531 places, 2844 transitions, 77170 flow [2023-01-28 03:18:15,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=57051, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=772, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=77170, PETRI_PLACES=531, PETRI_TRANSITIONS=2844} [2023-01-28 03:18:15,021 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 502 predicate places. [2023-01-28 03:18:15,021 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 2844 transitions, 77170 flow [2023-01-28 03:18:15,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.42857142857143) internal successors, (1154), 14 states have internal predecessors, (1154), 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) [2023-01-28 03:18:15,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:15,021 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:15,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 03:18:15,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-28 03:18:15,225 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:18:15,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1866322504, now seen corresponding path program 18 times [2023-01-28 03:18:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:15,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293791677] [2023-01-28 03:18:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:15,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:15,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:15,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293791677] [2023-01-28 03:18:15,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293791677] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:15,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565275597] [2023-01-28 03:18:15,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:18:15,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:15,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:18:15,335 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:18:15,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 03:18:15,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:18:15,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:18:15,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:18:15,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:18:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:15,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:18:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:15,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565275597] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:18:15,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:18:15,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-01-28 03:18:15,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352227489] [2023-01-28 03:18:15,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:18:15,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:18:15,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:15,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:18:15,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:18:15,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:18:15,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 2844 transitions, 77170 flow. Second operand has 15 states, 15 states have (on average 82.8) internal successors, (1242), 15 states have internal predecessors, (1242), 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) [2023-01-28 03:18:15,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:15,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:18:15,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:19:25,548 INFO L130 PetriNetUnfolder]: 56508/91382 cut-off events. [2023-01-28 03:19:25,548 INFO L131 PetriNetUnfolder]: For 6643618/6644083 co-relation queries the response was YES. [2023-01-28 03:19:30,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128416 conditions, 91382 events. 56508/91382 cut-off events. For 6643618/6644083 co-relation queries the response was YES. Maximal size of possible extension queue 4375. Compared 818134 event pairs, 8552 based on Foata normal form. 2337/93600 useless extension candidates. Maximal degree in co-relation 1126717. Up to 31473 conditions per place. [2023-01-28 03:19:30,761 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 2344 selfloop transitions, 1760 changer transitions 15/4172 dead transitions. [2023-01-28 03:19:30,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 4172 transitions, 124408 flow [2023-01-28 03:19:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 03:19:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 03:19:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1911 transitions. [2023-01-28 03:19:30,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027624309392266 [2023-01-28 03:19:30,763 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1911 transitions. [2023-01-28 03:19:30,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1911 transitions. [2023-01-28 03:19:30,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:19:30,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1911 transitions. [2023-01-28 03:19:30,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 91.0) internal successors, (1911), 21 states have internal predecessors, (1911), 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) [2023-01-28 03:19:30,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 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) [2023-01-28 03:19:30,767 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 181.0) internal successors, (3982), 22 states have internal predecessors, (3982), 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) [2023-01-28 03:19:30,767 INFO L175 Difference]: Start difference. First operand has 531 places, 2844 transitions, 77170 flow. Second operand 21 states and 1911 transitions. [2023-01-28 03:19:30,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 4172 transitions, 124408 flow [2023-01-28 03:21:47,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 4172 transitions, 119034 flow, removed 2361 selfloop flow, removed 4 redundant places. [2023-01-28 03:21:47,726 INFO L231 Difference]: Finished difference. Result has 555 places, 3245 transitions, 90846 flow [2023-01-28 03:21:47,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=74906, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=90846, PETRI_PLACES=555, PETRI_TRANSITIONS=3245} [2023-01-28 03:21:47,728 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 526 predicate places. [2023-01-28 03:21:47,728 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 3245 transitions, 90846 flow [2023-01-28 03:21:47,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 82.8) internal successors, (1242), 15 states have internal predecessors, (1242), 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) [2023-01-28 03:21:47,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:21:47,729 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:21:47,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 03:21:47,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 03:21:47,933 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:21:47,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:21:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1400967236, now seen corresponding path program 19 times [2023-01-28 03:21:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:21:47,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724048778] [2023-01-28 03:21:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:21:47,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:21:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:21:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:21:48,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:21:48,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724048778] [2023-01-28 03:21:48,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724048778] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:21:48,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174038362] [2023-01-28 03:21:48,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:21:48,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:21:48,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:21:48,035 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:21:48,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 03:21:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:21:48,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:21:48,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:21:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:21:48,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:21:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:21:48,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174038362] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:21:48,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:21:48,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-01-28 03:21:48,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986998935] [2023-01-28 03:21:48,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:21:48,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:21:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:21:48,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:21:48,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:21:48,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-01-28 03:21:48,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 3245 transitions, 90846 flow. Second operand has 16 states, 16 states have (on average 79.5625) internal successors, (1273), 16 states have internal predecessors, (1273), 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) [2023-01-28 03:21:48,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:21:48,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-01-28 03:21:48,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:23:31,109 INFO L130 PetriNetUnfolder]: 70083/114413 cut-off events. [2023-01-28 03:23:31,109 INFO L131 PetriNetUnfolder]: For 9409478/9409478 co-relation queries the response was YES. [2023-01-28 03:23:37,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1464709 conditions, 114413 events. 70083/114413 cut-off events. For 9409478/9409478 co-relation queries the response was YES. Maximal size of possible extension queue 5612. Compared 1078895 event pairs, 6761 based on Foata normal form. 814/115227 useless extension candidates. Maximal degree in co-relation 1462812. Up to 40233 conditions per place. [2023-01-28 03:23:38,236 INFO L137 encePairwiseOnDemand]: 172/181 looper letters, 2983 selfloop transitions, 2617 changer transitions 54/5654 dead transitions. [2023-01-28 03:23:38,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 5654 transitions, 168291 flow [2023-01-28 03:23:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-28 03:23:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-28 03:23:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3343 transitions. [2023-01-28 03:23:38,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735798271709874 [2023-01-28 03:23:38,240 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3343 transitions. [2023-01-28 03:23:38,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3343 transitions. [2023-01-28 03:23:38,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:23:38,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3343 transitions. [2023-01-28 03:23:38,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 85.71794871794872) internal successors, (3343), 39 states have internal predecessors, (3343), 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) [2023-01-28 03:23:38,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 181.0) internal successors, (7240), 40 states have internal predecessors, (7240), 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) [2023-01-28 03:23:38,246 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 181.0) internal successors, (7240), 40 states have internal predecessors, (7240), 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) [2023-01-28 03:23:38,246 INFO L175 Difference]: Start difference. First operand has 555 places, 3245 transitions, 90846 flow. Second operand 39 states and 3343 transitions. [2023-01-28 03:23:38,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 5654 transitions, 168291 flow [2023-01-28 03:26:59,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 5654 transitions, 163781 flow, removed 1315 selfloop flow, removed 4 redundant places. [2023-01-28 03:26:59,902 INFO L231 Difference]: Finished difference. Result has 610 places, 4265 transitions, 130156 flow [2023-01-28 03:26:59,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=88148, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1738, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=130156, PETRI_PLACES=610, PETRI_TRANSITIONS=4265} [2023-01-28 03:26:59,904 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 581 predicate places. [2023-01-28 03:26:59,904 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 4265 transitions, 130156 flow [2023-01-28 03:26:59,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.5625) internal successors, (1273), 16 states have internal predecessors, (1273), 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) [2023-01-28 03:26:59,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:26:59,905 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:26:59,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 03:27:00,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:27:00,109 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:27:00,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1116183444, now seen corresponding path program 20 times [2023-01-28 03:27:00,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:00,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586396597] [2023-01-28 03:27:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:00,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:00,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586396597] [2023-01-28 03:27:00,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586396597] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:27:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150931389] [2023-01-28 03:27:00,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:27:00,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:27:00,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:27:00,185 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:27:00,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 03:27:00,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:27:00,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:27:00,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:27:00,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:27:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:00,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:27:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:00,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150931389] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:27:00,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:27:00,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-01-28 03:27:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48788584] [2023-01-28 03:27:00,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:27:00,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 03:27:00,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:00,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 03:27:00,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:27:00,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 181 [2023-01-28 03:27:00,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 4265 transitions, 130156 flow. Second operand has 15 states, 15 states have (on average 82.26666666666667) internal successors, (1234), 15 states have internal predecessors, (1234), 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) [2023-01-28 03:27:00,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:00,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 181 [2023-01-28 03:27:00,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-28 03:27:37,024 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 03:27:37,024 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 03:27:38,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-01-28 03:27:38,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-28 03:27:38,630 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 03:27:38,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-28 03:27:38,630 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 03:27:38,631 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 03:27:38,632 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 03:27:38,632 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 03:27:38,632 INFO L445 BasicCegarLoop]: Path program histogram: [20, 4, 3, 2, 1, 1] [2023-01-28 03:27:38,634 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 03:27:38,634 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 03:27:38,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 03:27:38 BasicIcfg [2023-01-28 03:27:38,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 03:27:38,636 INFO L158 Benchmark]: Toolchain (without parser) took 824676.91ms. Allocated memory was 652.2MB in the beginning and 14.0GB in the end (delta: 13.4GB). Free memory was 601.5MB in the beginning and 8.1GB in the end (delta: -7.5GB). Peak memory consumption was 7.4GB. Max. memory is 16.0GB. [2023-01-28 03:27:38,636 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 377.5MB. Free memory was 323.3MB in the beginning and 323.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:27:38,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 151.54ms. Allocated memory is still 652.2MB. Free memory was 601.2MB in the beginning and 590.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 03:27:38,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.57ms. Allocated memory is still 652.2MB. Free memory was 590.4MB in the beginning and 588.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 03:27:38,636 INFO L158 Benchmark]: Boogie Preprocessor took 15.53ms. Allocated memory is still 652.2MB. Free memory was 588.6MB in the beginning and 587.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:27:38,636 INFO L158 Benchmark]: RCFGBuilder took 434.19ms. Allocated memory is still 652.2MB. Free memory was 587.2MB in the beginning and 573.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 03:27:38,637 INFO L158 Benchmark]: TraceAbstraction took 824043.76ms. Allocated memory was 652.2MB in the beginning and 14.0GB in the end (delta: 13.4GB). Free memory was 572.9MB in the beginning and 8.1GB in the end (delta: -7.6GB). Peak memory consumption was 7.4GB. Max. memory is 16.0GB. [2023-01-28 03:27:38,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 377.5MB. Free memory was 323.3MB in the beginning and 323.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 151.54ms. Allocated memory is still 652.2MB. Free memory was 601.2MB in the beginning and 590.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.57ms. Allocated memory is still 652.2MB. Free memory was 590.4MB in the beginning and 588.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.53ms. Allocated memory is still 652.2MB. Free memory was 588.6MB in the beginning and 587.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 434.19ms. Allocated memory is still 652.2MB. Free memory was 587.2MB in the beginning and 573.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 824043.76ms. Allocated memory was 652.2MB in the beginning and 14.0GB in the end (delta: 13.4GB). Free memory was 572.9MB in the beginning and 8.1GB in the end (delta: -7.6GB). Peak memory consumption was 7.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 95 PlacesBefore, 29 PlacesAfterwards, 92 TransitionsBefore, 22 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 76 TotalNumberOfCompositions, 1312 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1312, independent: 1312, independent conditional: 0, independent unconditional: 1312, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 696, independent: 696, independent conditional: 0, independent unconditional: 696, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1312, independent: 616, independent conditional: 0, independent unconditional: 616, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 696, unknown conditional: 0, unknown unconditional: 696] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 129 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 824.0s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 809.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3918 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3918 mSDsluCounter, 722 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 559 mSDsCounter, 237 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14469 IncrementalHoareTripleChecker+Invalid, 14706 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 237 mSolverCounterUnsat, 163 mSDtfsCounter, 14469 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1616 GetRequests, 1035 SyntacticMatches, 34 SemanticMatches, 547 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7210 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130156occurred in iteration=30, InterpolantAutomatonStates: 468, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 1149 NumberOfCodeBlocks, 1149 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 1551 ConstructedInterpolants, 0 QuantifiedInterpolants, 10673 SizeOfPredicates, 49 NumberOfNonLiveVariables, 3614 ConjunctsInSsa, 248 ConjunctsInUnsatCore, 73 InterpolantComputations, 10 PerfectInterpolantSequences, 111/279 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown