/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 08:39:32,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 08:39:32,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 08:39:32,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 08:39:32,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 08:39:32,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 08:39:32,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 08:39:32,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 08:39:32,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 08:39:32,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 08:39:32,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 08:39:32,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 08:39:32,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 08:39:32,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 08:39:32,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 08:39:32,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 08:39:32,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 08:39:32,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 08:39:32,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 08:39:32,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 08:39:32,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 08:39:32,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 08:39:32,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 08:39:32,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 08:39:32,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 08:39:32,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 08:39:32,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 08:39:32,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 08:39:32,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 08:39:32,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 08:39:32,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 08:39:32,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 08:39:32,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 08:39:32,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 08:39:32,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 08:39:32,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 08:39:32,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 08:39:32,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 08:39:32,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 08:39:32,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 08:39:32,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 08:39:32,177 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 08:39:32,205 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 08:39:32,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 08:39:32,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 08:39:32,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 08:39:32,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 08:39:32,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 08:39:32,207 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 08:39:32,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 08:39:32,207 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 08:39:32,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 08:39:32,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 08:39:32,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 08:39:32,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 08:39:32,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 08:39:32,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 08:39:32,209 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 08:39:32,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 08:39:32,209 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 08:39:32,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 08:39:32,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 08:39:32,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 08:39:32,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 08:39:32,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 08:39:32,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:39:32,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 08:39:32,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 08:39:32,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 08:39:32,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 08:39:32,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 08:39:32,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 08:39:32,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 08:39:32,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 08:39:32,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 08:39:32,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 08:39:32,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 08:39:32,461 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 08:39:32,461 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 08:39:32,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2023-01-28 08:39:33,666 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 08:39:33,856 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 08:39:33,857 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2023-01-28 08:39:33,861 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15b1ccca/515f66bd9f90459db3c76244bf05c950/FLAGddf0c46d4 [2023-01-28 08:39:33,870 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15b1ccca/515f66bd9f90459db3c76244bf05c950 [2023-01-28 08:39:33,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 08:39:33,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 08:39:33,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 08:39:33,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 08:39:33,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 08:39:33,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:39:33" (1/1) ... [2023-01-28 08:39:33,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2826b38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:33, skipping insertion in model container [2023-01-28 08:39:33,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:39:33" (1/1) ... [2023-01-28 08:39:33,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 08:39:33,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 08:39:34,053 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/bench-exp3x3-opt.wvr.c[2826,2839] [2023-01-28 08:39:34,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:39:34,073 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 08:39:34,098 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/bench-exp3x3-opt.wvr.c[2826,2839] [2023-01-28 08:39:34,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:39:34,111 INFO L208 MainTranslator]: Completed translation [2023-01-28 08:39:34,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34 WrapperNode [2023-01-28 08:39:34,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 08:39:34,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 08:39:34,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 08:39:34,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 08:39:34,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,156 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-01-28 08:39:34,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 08:39:34,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 08:39:34,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 08:39:34,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 08:39:34,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,176 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 08:39:34,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 08:39:34,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 08:39:34,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 08:39:34,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (1/1) ... [2023-01-28 08:39:34,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:39:34,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:39:34,210 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 08:39:34,225 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 08:39:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 08:39:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 08:39:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 08:39:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 08:39:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 08:39:34,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 08:39:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 08:39:34,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 08:39:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 08:39:34,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 08:39:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 08:39:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 08:39:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 08:39:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-01-28 08:39:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-01-28 08:39:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-01-28 08:39:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-01-28 08:39:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 08:39:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 08:39:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 08:39:34,252 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 08:39:34,329 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 08:39:34,330 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 08:39:34,560 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 08:39:34,568 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 08:39:34,568 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 08:39:34,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:39:34 BoogieIcfgContainer [2023-01-28 08:39:34,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 08:39:34,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 08:39:34,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 08:39:34,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 08:39:34,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:39:33" (1/3) ... [2023-01-28 08:39:34,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e32f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:39:34, skipping insertion in model container [2023-01-28 08:39:34,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:39:34" (2/3) ... [2023-01-28 08:39:34,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e32f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:39:34, skipping insertion in model container [2023-01-28 08:39:34,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:39:34" (3/3) ... [2023-01-28 08:39:34,589 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2023-01-28 08:39:34,605 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 08:39:34,606 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 08:39:34,606 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 08:39:34,766 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 08:39:34,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2023-01-28 08:39:34,872 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2023-01-28 08:39:34,872 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 08:39:34,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-01-28 08:39:34,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2023-01-28 08:39:34,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 147 transitions, 330 flow [2023-01-28 08:39:34,886 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:39:34,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 147 transitions, 330 flow [2023-01-28 08:39:34,896 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 147 transitions, 330 flow [2023-01-28 08:39:34,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 147 transitions, 330 flow [2023-01-28 08:39:34,964 INFO L130 PetriNetUnfolder]: 14/147 cut-off events. [2023-01-28 08:39:34,964 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 08:39:34,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 147 events. 14/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-01-28 08:39:34,968 INFO L119 LiptonReduction]: Number of co-enabled transitions 2916 [2023-01-28 08:39:40,351 INFO L134 LiptonReduction]: Checked pairs total: 3543 [2023-01-28 08:39:40,351 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-01-28 08:39:40,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:39:40,367 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;@5ba18ec0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:39:40,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 08:39:40,375 INFO L130 PetriNetUnfolder]: 6/36 cut-off events. [2023-01-28 08:39:40,375 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 08:39:40,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:40,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:40,376 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 4 more)] === [2023-01-28 08:39:40,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:40,380 INFO L85 PathProgramCache]: Analyzing trace with hash 859190718, now seen corresponding path program 1 times [2023-01-28 08:39:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:40,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561402753] [2023-01-28 08:39:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:40,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:41,174 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 08:39:41,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:41,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561402753] [2023-01-28 08:39:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561402753] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:39:41,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:39:41,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 08:39:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997130299] [2023-01-28 08:39:41,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:39:41,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:39:41,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:41,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:39:41,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:39:41,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-01-28 08:39:41,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:39:41,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:41,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-01-28 08:39:41,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:41,584 INFO L130 PetriNetUnfolder]: 3277/3973 cut-off events. [2023-01-28 08:39:41,585 INFO L131 PetriNetUnfolder]: For 313/313 co-relation queries the response was YES. [2023-01-28 08:39:41,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 3973 events. 3277/3973 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10583 event pairs, 837 based on Foata normal form. 1/2272 useless extension candidates. Maximal degree in co-relation 5564. Up to 2141 conditions per place. [2023-01-28 08:39:41,609 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 59 selfloop transitions, 3 changer transitions 1/63 dead transitions. [2023-01-28 08:39:41,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 63 transitions, 309 flow [2023-01-28 08:39:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:39:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:39:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-01-28 08:39:41,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369738339021616 [2023-01-28 08:39:41,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-01-28 08:39:41,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-01-28 08:39:41,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:41,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-01-28 08:39:41,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:39:41,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 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 08:39:41,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 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 08:39:41,635 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 110 flow. Second operand 3 states and 472 transitions. [2023-01-28 08:39:41,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 63 transitions, 309 flow [2023-01-28 08:39:41,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 63 transitions, 271 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-01-28 08:39:41,642 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 105 flow [2023-01-28 08:39:41,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-01-28 08:39:41,647 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-01-28 08:39:41,647 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 105 flow [2023-01-28 08:39:41,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:39:41,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:41,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:41,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 08:39:41,648 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 4 more)] === [2023-01-28 08:39:41,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1079964367, now seen corresponding path program 1 times [2023-01-28 08:39:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:41,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019671928] [2023-01-28 08:39:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:41,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:41,972 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 08:39:41,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:41,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019671928] [2023-01-28 08:39:41,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019671928] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:39:41,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:39:41,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 08:39:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725692384] [2023-01-28 08:39:41,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:39:41,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:39:41,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:41,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:39:41,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 08:39:41,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:39:41,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:39:41,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:41,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:39:41,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:42,451 INFO L130 PetriNetUnfolder]: 4887/5960 cut-off events. [2023-01-28 08:39:42,451 INFO L131 PetriNetUnfolder]: For 789/789 co-relation queries the response was YES. [2023-01-28 08:39:42,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13241 conditions, 5960 events. 4887/5960 cut-off events. For 789/789 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17742 event pairs, 529 based on Foata normal form. 126/4330 useless extension candidates. Maximal degree in co-relation 7451. Up to 4746 conditions per place. [2023-01-28 08:39:42,483 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 74 selfloop transitions, 13 changer transitions 7/94 dead transitions. [2023-01-28 08:39:42,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 94 transitions, 425 flow [2023-01-28 08:39:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:39:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:39:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-01-28 08:39:42,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46928327645051193 [2023-01-28 08:39:42,486 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-01-28 08:39:42,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-01-28 08:39:42,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:42,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-01-28 08:39:42,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 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 08:39:42,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:39:42,491 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:39:42,491 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 105 flow. Second operand 4 states and 550 transitions. [2023-01-28 08:39:42,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 94 transitions, 425 flow [2023-01-28 08:39:42,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 94 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:39:42,495 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 191 flow [2023-01-28 08:39:42,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2023-01-28 08:39:42,495 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-01-28 08:39:42,496 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 191 flow [2023-01-28 08:39:42,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:39:42,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:42,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:42,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 08:39:42,497 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 4 more)] === [2023-01-28 08:39:42,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash 978865401, now seen corresponding path program 1 times [2023-01-28 08:39:42,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:42,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747060019] [2023-01-28 08:39:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:42,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:39:42,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:42,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747060019] [2023-01-28 08:39:42,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747060019] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:39:42,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891374333] [2023-01-28 08:39:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:39:42,733 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 08:39:42,758 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 08:39:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:42,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 08:39:42,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:39:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:39:43,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:39:43,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891374333] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:39:43,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:39:43,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-01-28 08:39:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200445138] [2023-01-28 08:39:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:39:43,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:39:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:39:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 08:39:43,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 08:39:43,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 08:39:43,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:43,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 08:39:43,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:43,707 INFO L130 PetriNetUnfolder]: 6427/7817 cut-off events. [2023-01-28 08:39:43,707 INFO L131 PetriNetUnfolder]: For 5153/5153 co-relation queries the response was YES. [2023-01-28 08:39:43,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21888 conditions, 7817 events. 6427/7817 cut-off events. For 5153/5153 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23405 event pairs, 2167 based on Foata normal form. 1/7818 useless extension candidates. Maximal degree in co-relation 12123. Up to 5110 conditions per place. [2023-01-28 08:39:43,753 INFO L137 encePairwiseOnDemand]: 287/293 looper letters, 67 selfloop transitions, 13 changer transitions 5/85 dead transitions. [2023-01-28 08:39:43,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 456 flow [2023-01-28 08:39:43,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:39:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:39:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-01-28 08:39:43,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119453924914675 [2023-01-28 08:39:43,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-01-28 08:39:43,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-01-28 08:39:43,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:43,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-01-28 08:39:43,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:39:43,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 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 08:39:43,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 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 08:39:43,759 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 191 flow. Second operand 3 states and 450 transitions. [2023-01-28 08:39:43,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 85 transitions, 456 flow [2023-01-28 08:39:43,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 85 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 08:39:43,765 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 256 flow [2023-01-28 08:39:43,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2023-01-28 08:39:43,766 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-01-28 08:39:43,767 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 256 flow [2023-01-28 08:39:43,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 08:39:43,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:43,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:43,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 08:39:43,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:43,976 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 4 more)] === [2023-01-28 08:39:43,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1588966705, now seen corresponding path program 1 times [2023-01-28 08:39:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:43,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034953357] [2023-01-28 08:39:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:39:44,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034953357] [2023-01-28 08:39:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034953357] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:39:44,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:39:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 08:39:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404836736] [2023-01-28 08:39:44,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:39:44,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:39:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:39:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 08:39:44,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:39:44,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 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 08:39:44,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:44,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:39:44,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:44,808 INFO L130 PetriNetUnfolder]: 6271/7661 cut-off events. [2023-01-28 08:39:44,808 INFO L131 PetriNetUnfolder]: For 9563/9563 co-relation queries the response was YES. [2023-01-28 08:39:44,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24370 conditions, 7661 events. 6271/7661 cut-off events. For 9563/9563 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23885 event pairs, 1083 based on Foata normal form. 156/7817 useless extension candidates. Maximal degree in co-relation 13894. Up to 6447 conditions per place. [2023-01-28 08:39:44,842 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 80 selfloop transitions, 19 changer transitions 9/108 dead transitions. [2023-01-28 08:39:44,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 644 flow [2023-01-28 08:39:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:39:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:39:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-01-28 08:39:44,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46928327645051193 [2023-01-28 08:39:44,845 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-01-28 08:39:44,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-01-28 08:39:44,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:44,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-01-28 08:39:44,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 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 08:39:44,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:39:44,849 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:39:44,849 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 256 flow. Second operand 4 states and 550 transitions. [2023-01-28 08:39:44,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 644 flow [2023-01-28 08:39:44,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 108 transitions, 619 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 08:39:44,867 INFO L231 Difference]: Finished difference. Result has 51 places, 63 transitions, 336 flow [2023-01-28 08:39:44,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=51, PETRI_TRANSITIONS=63} [2023-01-28 08:39:44,869 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-01-28 08:39:44,869 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 63 transitions, 336 flow [2023-01-28 08:39:44,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 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 08:39:44,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:44,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:44,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 08:39:44,871 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 4 more)] === [2023-01-28 08:39:44,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:44,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1722538193, now seen corresponding path program 2 times [2023-01-28 08:39:44,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:44,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985347204] [2023-01-28 08:39:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:44,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:39:45,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:45,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985347204] [2023-01-28 08:39:45,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985347204] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:39:45,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108062198] [2023-01-28 08:39:45,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:39:45,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:45,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:39:45,163 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 08:39:45,181 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 08:39:45,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 08:39:45,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:39:45,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 08:39:45,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:39:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:45,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:39:45,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108062198] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:39:45,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:39:45,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-01-28 08:39:45,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930986462] [2023-01-28 08:39:45,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:39:45,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:39:45,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:39:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 08:39:45,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-01-28 08:39:45,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 63 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 08:39:45,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:45,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-01-28 08:39:45,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:46,123 INFO L130 PetriNetUnfolder]: 9527/11599 cut-off events. [2023-01-28 08:39:46,123 INFO L131 PetriNetUnfolder]: For 12551/12551 co-relation queries the response was YES. [2023-01-28 08:39:46,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35496 conditions, 11599 events. 9527/11599 cut-off events. For 12551/12551 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 37435 event pairs, 3399 based on Foata normal form. 1/11600 useless extension candidates. Maximal degree in co-relation 21625. Up to 6396 conditions per place. [2023-01-28 08:39:46,221 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 77 selfloop transitions, 13 changer transitions 5/95 dead transitions. [2023-01-28 08:39:46,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 95 transitions, 631 flow [2023-01-28 08:39:46,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:39:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:39:46,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-01-28 08:39:46,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415244596131968 [2023-01-28 08:39:46,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-01-28 08:39:46,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-01-28 08:39:46,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:46,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-01-28 08:39:46,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 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 08:39:46,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 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 08:39:46,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 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 08:39:46,227 INFO L175 Difference]: Start difference. First operand has 51 places, 63 transitions, 336 flow. Second operand 3 states and 476 transitions. [2023-01-28 08:39:46,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 95 transitions, 631 flow [2023-01-28 08:39:46,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 95 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:39:46,247 INFO L231 Difference]: Finished difference. Result has 53 places, 65 transitions, 372 flow [2023-01-28 08:39:46,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=53, PETRI_TRANSITIONS=65} [2023-01-28 08:39:46,248 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-01-28 08:39:46,248 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 65 transitions, 372 flow [2023-01-28 08:39:46,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 08:39:46,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:46,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:46,259 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 08:39:46,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:46,455 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 4 more)] === [2023-01-28 08:39:46,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash 810242775, now seen corresponding path program 1 times [2023-01-28 08:39:46,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:46,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309022681] [2023-01-28 08:39:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:39:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:46,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309022681] [2023-01-28 08:39:46,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309022681] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:39:46,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:39:46,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 08:39:46,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804916071] [2023-01-28 08:39:46,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:39:46,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:39:46,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:46,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:39:46,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 08:39:46,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:39:46,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 65 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 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 08:39:46,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:46,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:39:46,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:47,570 INFO L130 PetriNetUnfolder]: 9359/11431 cut-off events. [2023-01-28 08:39:47,570 INFO L131 PetriNetUnfolder]: For 17363/17363 co-relation queries the response was YES. [2023-01-28 08:39:47,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36837 conditions, 11431 events. 9359/11431 cut-off events. For 17363/17363 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38572 event pairs, 1953 based on Foata normal form. 168/11599 useless extension candidates. Maximal degree in co-relation 24955. Up to 10217 conditions per place. [2023-01-28 08:39:47,620 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 84 selfloop transitions, 27 changer transitions 11/122 dead transitions. [2023-01-28 08:39:47,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 122 transitions, 830 flow [2023-01-28 08:39:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:39:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:39:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-01-28 08:39:47,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46928327645051193 [2023-01-28 08:39:47,623 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-01-28 08:39:47,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-01-28 08:39:47,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:47,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-01-28 08:39:47,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 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 08:39:47,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:39:47,627 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:39:47,627 INFO L175 Difference]: Start difference. First operand has 53 places, 65 transitions, 372 flow. Second operand 4 states and 550 transitions. [2023-01-28 08:39:47,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 122 transitions, 830 flow [2023-01-28 08:39:47,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 122 transitions, 817 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:39:47,653 INFO L231 Difference]: Finished difference. Result has 56 places, 75 transitions, 510 flow [2023-01-28 08:39:47,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=510, PETRI_PLACES=56, PETRI_TRANSITIONS=75} [2023-01-28 08:39:47,654 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2023-01-28 08:39:47,654 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 75 transitions, 510 flow [2023-01-28 08:39:47,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 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 08:39:47,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:47,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:47,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 08:39:47,655 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 4 more)] === [2023-01-28 08:39:47,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:47,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1503143731, now seen corresponding path program 2 times [2023-01-28 08:39:47,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:47,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437637001] [2023-01-28 08:39:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:47,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:39:47,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:47,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437637001] [2023-01-28 08:39:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437637001] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:39:47,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342479978] [2023-01-28 08:39:47,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:39:47,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:47,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:39:47,973 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 08:39:47,976 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 08:39:48,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 08:39:48,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:39:48,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 08:39:48,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:39:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:48,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:39:48,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342479978] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:39:48,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:39:48,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-01-28 08:39:48,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234822841] [2023-01-28 08:39:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:39:48,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:39:48,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:48,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:39:48,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 08:39:48,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-01-28 08:39:48,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 75 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 08:39:48,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:48,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-01-28 08:39:48,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:49,203 INFO L130 PetriNetUnfolder]: 12615/15369 cut-off events. [2023-01-28 08:39:49,203 INFO L131 PetriNetUnfolder]: For 25373/25373 co-relation queries the response was YES. [2023-01-28 08:39:49,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51043 conditions, 15369 events. 12615/15369 cut-off events. For 25373/25373 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51496 event pairs, 5545 based on Foata normal form. 1/15370 useless extension candidates. Maximal degree in co-relation 28427. Up to 8756 conditions per place. [2023-01-28 08:39:49,272 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 89 selfloop transitions, 13 changer transitions 9/111 dead transitions. [2023-01-28 08:39:49,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 111 transitions, 855 flow [2023-01-28 08:39:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:39:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:39:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-01-28 08:39:49,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460750853242321 [2023-01-28 08:39:49,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-01-28 08:39:49,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-01-28 08:39:49,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:49,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-01-28 08:39:49,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 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 08:39:49,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 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 08:39:49,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 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 08:39:49,278 INFO L175 Difference]: Start difference. First operand has 56 places, 75 transitions, 510 flow. Second operand 3 states and 480 transitions. [2023-01-28 08:39:49,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 111 transitions, 855 flow [2023-01-28 08:39:49,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 111 transitions, 830 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:39:49,301 INFO L231 Difference]: Finished difference. Result has 58 places, 77 transitions, 538 flow [2023-01-28 08:39:49,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=58, PETRI_TRANSITIONS=77} [2023-01-28 08:39:49,302 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2023-01-28 08:39:49,302 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 77 transitions, 538 flow [2023-01-28 08:39:49,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 08:39:49,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:49,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:49,313 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 08:39:49,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:49,514 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 4 more)] === [2023-01-28 08:39:49,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1650756802, now seen corresponding path program 1 times [2023-01-28 08:39:49,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:49,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213124755] [2023-01-28 08:39:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:49,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:49,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213124755] [2023-01-28 08:39:49,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213124755] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:39:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510162458] [2023-01-28 08:39:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:49,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:49,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:39:49,748 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 08:39:49,775 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 08:39:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:49,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:39:49,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:39:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:49,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:39:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510162458] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:39:50,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:39:50,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 08:39:50,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670306303] [2023-01-28 08:39:50,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:39:50,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 08:39:50,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 08:39:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:39:50,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:39:50,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 77 transitions, 538 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 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 08:39:50,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:50,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:39:50,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:51,515 INFO L130 PetriNetUnfolder]: 17771/21680 cut-off events. [2023-01-28 08:39:51,515 INFO L131 PetriNetUnfolder]: For 38903/38903 co-relation queries the response was YES. [2023-01-28 08:39:51,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74244 conditions, 21680 events. 17771/21680 cut-off events. For 38903/38903 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 79240 event pairs, 3731 based on Foata normal form. 565/22245 useless extension candidates. Maximal degree in co-relation 48926. Up to 8936 conditions per place. [2023-01-28 08:39:51,581 INFO L137 encePairwiseOnDemand]: 283/293 looper letters, 127 selfloop transitions, 32 changer transitions 35/194 dead transitions. [2023-01-28 08:39:51,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 194 transitions, 1337 flow [2023-01-28 08:39:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:39:51,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:39:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 839 transitions. [2023-01-28 08:39:51,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47724687144482364 [2023-01-28 08:39:51,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 839 transitions. [2023-01-28 08:39:51,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 839 transitions. [2023-01-28 08:39:51,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:51,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 839 transitions. [2023-01-28 08:39:51,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 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 08:39:51,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:39:51,589 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:39:51,589 INFO L175 Difference]: Start difference. First operand has 58 places, 77 transitions, 538 flow. Second operand 6 states and 839 transitions. [2023-01-28 08:39:51,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 194 transitions, 1337 flow [2023-01-28 08:39:51,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 194 transitions, 1324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:39:51,633 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 620 flow [2023-01-28 08:39:51,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=620, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-01-28 08:39:51,634 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-01-28 08:39:51,634 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 620 flow [2023-01-28 08:39:51,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 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 08:39:51,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:51,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:51,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 08:39:51,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:51,841 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 4 more)] === [2023-01-28 08:39:51,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:51,841 INFO L85 PathProgramCache]: Analyzing trace with hash 201729358, now seen corresponding path program 1 times [2023-01-28 08:39:51,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:51,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550858431] [2023-01-28 08:39:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:51,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:52,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:52,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550858431] [2023-01-28 08:39:52,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550858431] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:39:52,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789129430] [2023-01-28 08:39:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:52,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:52,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:39:52,053 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 08:39:52,056 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 08:39:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:52,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:39:52,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:39:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:52,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:39:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:52,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789129430] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:39:52,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:39:52,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 08:39:52,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725222133] [2023-01-28 08:39:52,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:39:52,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 08:39:52,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:52,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 08:39:52,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:39:52,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:39:52,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 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 08:39:52,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:52,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:39:52,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:54,268 INFO L130 PetriNetUnfolder]: 23171/28330 cut-off events. [2023-01-28 08:39:54,269 INFO L131 PetriNetUnfolder]: For 67761/67761 co-relation queries the response was YES. [2023-01-28 08:39:54,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102761 conditions, 28330 events. 23171/28330 cut-off events. For 67761/67761 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 109009 event pairs, 3613 based on Foata normal form. 757/29087 useless extension candidates. Maximal degree in co-relation 54810. Up to 10010 conditions per place. [2023-01-28 08:39:54,356 INFO L137 encePairwiseOnDemand]: 283/293 looper letters, 154 selfloop transitions, 30 changer transitions 18/202 dead transitions. [2023-01-28 08:39:54,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 202 transitions, 1602 flow [2023-01-28 08:39:54,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:39:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:39:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 827 transitions. [2023-01-28 08:39:54,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47042093287827075 [2023-01-28 08:39:54,359 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 827 transitions. [2023-01-28 08:39:54,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 827 transitions. [2023-01-28 08:39:54,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:54,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 827 transitions. [2023-01-28 08:39:54,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 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 08:39:54,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:39:54,364 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:39:54,364 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 620 flow. Second operand 6 states and 827 transitions. [2023-01-28 08:39:54,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 202 transitions, 1602 flow [2023-01-28 08:39:54,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 202 transitions, 1538 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 08:39:54,465 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 663 flow [2023-01-28 08:39:54,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=663, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2023-01-28 08:39:54,466 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-01-28 08:39:54,466 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 663 flow [2023-01-28 08:39:54,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 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 08:39:54,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:54,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:54,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 08:39:54,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:54,672 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 4 more)] === [2023-01-28 08:39:54,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash -735069493, now seen corresponding path program 1 times [2023-01-28 08:39:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:54,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890084091] [2023-01-28 08:39:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:54,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:54,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890084091] [2023-01-28 08:39:54,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890084091] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:39:54,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602510747] [2023-01-28 08:39:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:54,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:54,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:39:54,932 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 08:39:54,958 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 08:39:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:55,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:39:55,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:39:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:55,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:39:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:55,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602510747] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:39:55,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:39:55,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 08:39:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843651767] [2023-01-28 08:39:55,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:39:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 08:39:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 08:39:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:39:55,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:39:55,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 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 08:39:55,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:55,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:39:55,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:39:57,673 INFO L130 PetriNetUnfolder]: 32931/40393 cut-off events. [2023-01-28 08:39:57,673 INFO L131 PetriNetUnfolder]: For 112155/112155 co-relation queries the response was YES. [2023-01-28 08:39:57,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159006 conditions, 40393 events. 32931/40393 cut-off events. For 112155/112155 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 167655 event pairs, 4945 based on Foata normal form. 1321/41714 useless extension candidates. Maximal degree in co-relation 98913. Up to 17631 conditions per place. [2023-01-28 08:39:57,939 INFO L137 encePairwiseOnDemand]: 283/293 looper letters, 153 selfloop transitions, 32 changer transitions 25/210 dead transitions. [2023-01-28 08:39:57,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 210 transitions, 1685 flow [2023-01-28 08:39:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:39:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:39:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 835 transitions. [2023-01-28 08:39:57,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474971558589306 [2023-01-28 08:39:57,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 835 transitions. [2023-01-28 08:39:57,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 835 transitions. [2023-01-28 08:39:57,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:39:57,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 835 transitions. [2023-01-28 08:39:57,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.16666666666666) internal successors, (835), 6 states have internal predecessors, (835), 0 states have call successors, (0), 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 08:39:57,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:39:57,949 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:39:57,949 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 663 flow. Second operand 6 states and 835 transitions. [2023-01-28 08:39:57,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 210 transitions, 1685 flow [2023-01-28 08:39:58,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 210 transitions, 1602 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-28 08:39:58,142 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 705 flow [2023-01-28 08:39:58,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=705, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2023-01-28 08:39:58,142 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-01-28 08:39:58,143 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 705 flow [2023-01-28 08:39:58,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 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 08:39:58,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:39:58,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:39:58,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 08:39:58,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:39:58,345 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 4 more)] === [2023-01-28 08:39:58,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:39:58,345 INFO L85 PathProgramCache]: Analyzing trace with hash -737156810, now seen corresponding path program 1 times [2023-01-28 08:39:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:39:58,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547430634] [2023-01-28 08:39:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:39:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:39:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:39:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:39:58,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:39:58,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547430634] [2023-01-28 08:39:58,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547430634] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:39:58,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:39:58,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 08:39:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349394359] [2023-01-28 08:39:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:39:58,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:39:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:39:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:39:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 08:39:58,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:39:58,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 705 flow. Second operand has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 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 08:39:58,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:39:58,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:39:58,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:01,471 INFO L130 PetriNetUnfolder]: 37866/46390 cut-off events. [2023-01-28 08:40:01,472 INFO L131 PetriNetUnfolder]: For 150964/150964 co-relation queries the response was YES. [2023-01-28 08:40:01,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194579 conditions, 46390 events. 37866/46390 cut-off events. For 150964/150964 co-relation queries the response was YES. Maximal size of possible extension queue 1196. Compared 191228 event pairs, 12186 based on Foata normal form. 1116/47506 useless extension candidates. Maximal degree in co-relation 98049. Up to 40691 conditions per place. [2023-01-28 08:40:01,672 INFO L137 encePairwiseOnDemand]: 285/293 looper letters, 104 selfloop transitions, 26 changer transitions 12/142 dead transitions. [2023-01-28 08:40:01,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 1284 flow [2023-01-28 08:40:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:40:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:40:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-01-28 08:40:01,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46757679180887374 [2023-01-28 08:40:01,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-01-28 08:40:01,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-01-28 08:40:01,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:01,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-01-28 08:40:01,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 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 08:40:01,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:01,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:01,679 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 705 flow. Second operand 4 states and 548 transitions. [2023-01-28 08:40:01,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 1284 flow [2023-01-28 08:40:02,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 142 transitions, 1234 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 08:40:02,197 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 728 flow [2023-01-28 08:40:02,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=728, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2023-01-28 08:40:02,197 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-01-28 08:40:02,197 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 728 flow [2023-01-28 08:40:02,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 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 08:40:02,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:02,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:02,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 08:40:02,198 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 4 more)] === [2023-01-28 08:40:02,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1437927406, now seen corresponding path program 2 times [2023-01-28 08:40:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954111636] [2023-01-28 08:40:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:02,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:40:02,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:02,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954111636] [2023-01-28 08:40:02,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954111636] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:40:02,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:40:02,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 08:40:02,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403000556] [2023-01-28 08:40:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:40:02,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:40:02,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:40:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:40:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 08:40:02,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:40:02,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 728 flow. Second operand has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 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 08:40:02,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:40:02,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:40:02,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:05,588 INFO L130 PetriNetUnfolder]: 43850/53622 cut-off events. [2023-01-28 08:40:05,588 INFO L131 PetriNetUnfolder]: For 171325/171325 co-relation queries the response was YES. [2023-01-28 08:40:05,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230250 conditions, 53622 events. 43850/53622 cut-off events. For 171325/171325 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 224489 event pairs, 14317 based on Foata normal form. 1248/54870 useless extension candidates. Maximal degree in co-relation 127790. Up to 47075 conditions per place. [2023-01-28 08:40:05,842 INFO L137 encePairwiseOnDemand]: 285/293 looper letters, 101 selfloop transitions, 26 changer transitions 12/139 dead transitions. [2023-01-28 08:40:05,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 139 transitions, 1255 flow [2023-01-28 08:40:05,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:40:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:40:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-01-28 08:40:05,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46757679180887374 [2023-01-28 08:40:05,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-01-28 08:40:05,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-01-28 08:40:05,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:05,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-01-28 08:40:05,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 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 08:40:05,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:05,847 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:05,848 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 728 flow. Second operand 4 states and 548 transitions. [2023-01-28 08:40:05,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 139 transitions, 1255 flow [2023-01-28 08:40:06,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 139 transitions, 1206 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 08:40:06,555 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 746 flow [2023-01-28 08:40:06,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=746, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-01-28 08:40:06,555 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-01-28 08:40:06,556 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 746 flow [2023-01-28 08:40:06,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 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 08:40:06,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:06,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:06,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 08:40:06,557 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 4 more)] === [2023-01-28 08:40:06,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1844332026, now seen corresponding path program 3 times [2023-01-28 08:40:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:06,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112796983] [2023-01-28 08:40:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:40:06,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:06,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112796983] [2023-01-28 08:40:06,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112796983] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:40:06,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:40:06,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 08:40:06,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337726543] [2023-01-28 08:40:06,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:40:06,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:40:06,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:40:06,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:40:06,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 08:40:06,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:40:06,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 746 flow. Second operand has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 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 08:40:06,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:40:06,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:40:06,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:11,539 INFO L130 PetriNetUnfolder]: 47994/58602 cut-off events. [2023-01-28 08:40:11,539 INFO L131 PetriNetUnfolder]: For 202582/202582 co-relation queries the response was YES. [2023-01-28 08:40:11,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257703 conditions, 58602 events. 47994/58602 cut-off events. For 202582/202582 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 246886 event pairs, 15767 based on Foata normal form. 836/59438 useless extension candidates. Maximal degree in co-relation 157494. Up to 53907 conditions per place. [2023-01-28 08:40:11,875 INFO L137 encePairwiseOnDemand]: 285/293 looper letters, 102 selfloop transitions, 26 changer transitions 12/140 dead transitions. [2023-01-28 08:40:11,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 140 transitions, 1279 flow [2023-01-28 08:40:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:40:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:40:11,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-01-28 08:40:11,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46757679180887374 [2023-01-28 08:40:11,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-01-28 08:40:11,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-01-28 08:40:11,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:11,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-01-28 08:40:11,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 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 08:40:11,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:11,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:11,880 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 746 flow. Second operand 4 states and 548 transitions. [2023-01-28 08:40:11,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 140 transitions, 1279 flow [2023-01-28 08:40:12,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 140 transitions, 1230 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 08:40:12,475 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 764 flow [2023-01-28 08:40:12,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=764, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2023-01-28 08:40:12,476 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2023-01-28 08:40:12,476 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 764 flow [2023-01-28 08:40:12,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 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 08:40:12,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:12,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:12,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 08:40:12,477 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 4 more)] === [2023-01-28 08:40:12,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1860257788, now seen corresponding path program 1 times [2023-01-28 08:40:12,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:12,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209722078] [2023-01-28 08:40:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:12,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:40:12,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:12,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209722078] [2023-01-28 08:40:12,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209722078] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:40:12,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361907261] [2023-01-28 08:40:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:12,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:12,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:40:12,657 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 08:40:12,659 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 08:40:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:12,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:40:12,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:40:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:40:12,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:40:12,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361907261] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:40:12,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:40:12,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-01-28 08:40:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556349294] [2023-01-28 08:40:12,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:40:12,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:40:12,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:40:12,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:40:12,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:40:12,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 08:40:12,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 764 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 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 08:40:12,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:40:12,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 08:40:12,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:16,102 INFO L130 PetriNetUnfolder]: 41648/50891 cut-off events. [2023-01-28 08:40:16,103 INFO L131 PetriNetUnfolder]: For 182917/182917 co-relation queries the response was YES. [2023-01-28 08:40:16,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227042 conditions, 50891 events. 41648/50891 cut-off events. For 182917/182917 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 217306 event pairs, 3683 based on Foata normal form. 1276/52167 useless extension candidates. Maximal degree in co-relation 189713. Up to 23987 conditions per place. [2023-01-28 08:40:16,287 INFO L137 encePairwiseOnDemand]: 288/293 looper letters, 126 selfloop transitions, 14 changer transitions 53/193 dead transitions. [2023-01-28 08:40:16,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 193 transitions, 1731 flow [2023-01-28 08:40:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:40:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:40:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2023-01-28 08:40:16,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50580204778157 [2023-01-28 08:40:16,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2023-01-28 08:40:16,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2023-01-28 08:40:16,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:16,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2023-01-28 08:40:16,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 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 08:40:16,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 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 08:40:16,293 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 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 08:40:16,293 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 764 flow. Second operand 5 states and 741 transitions. [2023-01-28 08:40:16,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 193 transitions, 1731 flow [2023-01-28 08:40:17,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 193 transitions, 1671 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 08:40:17,006 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 639 flow [2023-01-28 08:40:17,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=639, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2023-01-28 08:40:17,006 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2023-01-28 08:40:17,007 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 639 flow [2023-01-28 08:40:17,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 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 08:40:17,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:17,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:17,012 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 08:40:17,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:17,208 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 4 more)] === [2023-01-28 08:40:17,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1742927478, now seen corresponding path program 2 times [2023-01-28 08:40:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:17,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121840708] [2023-01-28 08:40:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:40:17,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:17,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121840708] [2023-01-28 08:40:17,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121840708] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:40:17,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447564171] [2023-01-28 08:40:17,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:40:17,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:17,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:40:17,363 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 08:40:17,386 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 08:40:17,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:40:17,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:40:17,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:40:17,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:40:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:40:17,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:40:17,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447564171] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:40:17,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:40:17,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-01-28 08:40:17,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049800016] [2023-01-28 08:40:17,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:40:17,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:40:17,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:40:17,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:40:17,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:40:17,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 08:40:17,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 639 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 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 08:40:17,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:40:17,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 08:40:17,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:19,575 INFO L130 PetriNetUnfolder]: 28960/35192 cut-off events. [2023-01-28 08:40:19,575 INFO L131 PetriNetUnfolder]: For 142660/142660 co-relation queries the response was YES. [2023-01-28 08:40:19,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162237 conditions, 35192 events. 28960/35192 cut-off events. For 142660/142660 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 137323 event pairs, 2134 based on Foata normal form. 822/36014 useless extension candidates. Maximal degree in co-relation 137881. Up to 15973 conditions per place. [2023-01-28 08:40:19,713 INFO L137 encePairwiseOnDemand]: 288/293 looper letters, 131 selfloop transitions, 8 changer transitions 46/185 dead transitions. [2023-01-28 08:40:19,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 185 transitions, 1677 flow [2023-01-28 08:40:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:40:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:40:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-01-28 08:40:19,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030716723549488 [2023-01-28 08:40:19,715 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-01-28 08:40:19,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-01-28 08:40:19,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:19,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-01-28 08:40:19,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 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 08:40:19,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 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 08:40:19,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 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 08:40:19,719 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 639 flow. Second operand 5 states and 737 transitions. [2023-01-28 08:40:19,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 185 transitions, 1677 flow [2023-01-28 08:40:20,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 185 transitions, 1625 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-28 08:40:20,239 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 530 flow [2023-01-28 08:40:20,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2023-01-28 08:40:20,240 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-01-28 08:40:20,240 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 530 flow [2023-01-28 08:40:20,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 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 08:40:20,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:20,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:20,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 08:40:20,441 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,SelfDestructingSolverStorable14 [2023-01-28 08:40:20,441 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 4 more)] === [2023-01-28 08:40:20,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:20,441 INFO L85 PathProgramCache]: Analyzing trace with hash -66181106, now seen corresponding path program 3 times [2023-01-28 08:40:20,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:20,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410319969] [2023-01-28 08:40:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:20,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:40:20,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410319969] [2023-01-28 08:40:20,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410319969] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:40:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350824962] [2023-01-28 08:40:20,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:40:20,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:20,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:40:20,617 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 08:40:20,623 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 08:40:20,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:40:20,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:40:20,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:40:20,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:40:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:40:20,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:40:20,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350824962] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:40:20,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:40:20,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-01-28 08:40:20,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130253557] [2023-01-28 08:40:20,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:40:20,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:40:20,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:40:20,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:40:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:40:20,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 08:40:20,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 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 08:40:20,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:40:20,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 08:40:20,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:22,860 INFO L130 PetriNetUnfolder]: 26526/32073 cut-off events. [2023-01-28 08:40:22,860 INFO L131 PetriNetUnfolder]: For 127499/127499 co-relation queries the response was YES. [2023-01-28 08:40:22,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150842 conditions, 32073 events. 26526/32073 cut-off events. For 127499/127499 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 118734 event pairs, 3762 based on Foata normal form. 816/32889 useless extension candidates. Maximal degree in co-relation 129072. Up to 20247 conditions per place. [2023-01-28 08:40:23,006 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 128 selfloop transitions, 9 changer transitions 0/137 dead transitions. [2023-01-28 08:40:23,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 137 transitions, 1233 flow [2023-01-28 08:40:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:40:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:40:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-01-28 08:40:23,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974402730375427 [2023-01-28 08:40:23,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-01-28 08:40:23,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-01-28 08:40:23,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:23,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-01-28 08:40:23,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 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 08:40:23,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:23,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:23,014 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 530 flow. Second operand 4 states and 583 transitions. [2023-01-28 08:40:23,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 137 transitions, 1233 flow [2023-01-28 08:40:23,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 137 transitions, 1209 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 08:40:23,278 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 539 flow [2023-01-28 08:40:23,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-01-28 08:40:23,279 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-01-28 08:40:23,279 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 539 flow [2023-01-28 08:40:23,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 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 08:40:23,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:23,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:23,285 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 08:40:23,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 08:40:23,480 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 4 more)] === [2023-01-28 08:40:23,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:23,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1199386863, now seen corresponding path program 1 times [2023-01-28 08:40:23,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:23,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639637379] [2023-01-28 08:40:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:23,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:40:23,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:23,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639637379] [2023-01-28 08:40:23,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639637379] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:40:23,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:40:23,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 08:40:23,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050332115] [2023-01-28 08:40:23,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:40:23,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:40:23,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:40:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:40:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 08:40:23,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:40:23,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 539 flow. Second operand has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:40:23,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:40:23,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:40:23,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:26,039 INFO L130 PetriNetUnfolder]: 28538/34525 cut-off events. [2023-01-28 08:40:26,039 INFO L131 PetriNetUnfolder]: For 152390/152390 co-relation queries the response was YES. [2023-01-28 08:40:26,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168078 conditions, 34525 events. 28538/34525 cut-off events. For 152390/152390 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 132521 event pairs, 4076 based on Foata normal form. 440/34965 useless extension candidates. Maximal degree in co-relation 128356. Up to 19933 conditions per place. [2023-01-28 08:40:26,212 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 104 selfloop transitions, 8 changer transitions 27/139 dead transitions. [2023-01-28 08:40:26,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 139 transitions, 1166 flow [2023-01-28 08:40:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:40:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:40:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2023-01-28 08:40:26,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559726962457338 [2023-01-28 08:40:26,214 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2023-01-28 08:40:26,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2023-01-28 08:40:26,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:26,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2023-01-28 08:40:26,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 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 08:40:26,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 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 08:40:26,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 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 08:40:26,218 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 539 flow. Second operand 5 states and 668 transitions. [2023-01-28 08:40:26,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 139 transitions, 1166 flow [2023-01-28 08:40:26,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 139 transitions, 1136 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 08:40:26,780 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 476 flow [2023-01-28 08:40:26,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2023-01-28 08:40:26,781 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-01-28 08:40:26,781 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 476 flow [2023-01-28 08:40:26,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:40:26,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:26,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:26,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 08:40:26,782 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 4 more)] === [2023-01-28 08:40:26,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:26,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1898826339, now seen corresponding path program 2 times [2023-01-28 08:40:26,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:26,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422199440] [2023-01-28 08:40:26,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:26,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 08:40:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422199440] [2023-01-28 08:40:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422199440] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:40:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429700882] [2023-01-28 08:40:27,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:40:27,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:27,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:40:27,133 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 08:40:27,145 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 08:40:27,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:40:27,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:40:27,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:40:27,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:40:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:40:27,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:40:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 08:40:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429700882] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:40:27,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:40:27,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2023-01-28 08:40:27,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271644825] [2023-01-28 08:40:27,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:40:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 08:40:27,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:40:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 08:40:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:40:27,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:40:27,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 476 flow. Second operand has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 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 08:40:27,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:40:27,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:40:27,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:29,737 INFO L130 PetriNetUnfolder]: 31652/38211 cut-off events. [2023-01-28 08:40:29,737 INFO L131 PetriNetUnfolder]: For 158224/158224 co-relation queries the response was YES. [2023-01-28 08:40:29,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181614 conditions, 38211 events. 31652/38211 cut-off events. For 158224/158224 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 149404 event pairs, 2800 based on Foata normal form. 1040/39251 useless extension candidates. Maximal degree in co-relation 155763. Up to 25583 conditions per place. [2023-01-28 08:40:30,107 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 156 selfloop transitions, 16 changer transitions 0/172 dead transitions. [2023-01-28 08:40:30,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 172 transitions, 1418 flow [2023-01-28 08:40:30,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:40:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:40:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 799 transitions. [2023-01-28 08:40:30,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45449374288964733 [2023-01-28 08:40:30,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 799 transitions. [2023-01-28 08:40:30,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 799 transitions. [2023-01-28 08:40:30,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:30,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 799 transitions. [2023-01-28 08:40:30,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 0 states have call successors, (0), 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 08:40:30,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:40:30,117 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:40:30,117 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 476 flow. Second operand 6 states and 799 transitions. [2023-01-28 08:40:30,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 172 transitions, 1418 flow [2023-01-28 08:40:30,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 172 transitions, 1399 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 08:40:30,537 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 545 flow [2023-01-28 08:40:30,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=545, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2023-01-28 08:40:30,538 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2023-01-28 08:40:30,538 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 545 flow [2023-01-28 08:40:30,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 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 08:40:30,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:30,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:30,543 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 08:40:30,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 08:40:30,739 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 4 more)] === [2023-01-28 08:40:30,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:30,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2075406454, now seen corresponding path program 1 times [2023-01-28 08:40:30,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:30,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009830766] [2023-01-28 08:40:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:30,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:40:30,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009830766] [2023-01-28 08:40:30,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009830766] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:40:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157193854] [2023-01-28 08:40:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:30,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:30,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:40:30,936 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 08:40:30,960 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 08:40:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:31,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:40:31,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:40:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:40:31,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:40:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:40:31,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157193854] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:40:31,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:40:31,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2023-01-28 08:40:31,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501459987] [2023-01-28 08:40:31,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:40:31,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 08:40:31,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:40:31,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 08:40:31,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:40:31,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:40:31,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 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 08:40:31,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:40:31,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:40:31,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:33,414 INFO L130 PetriNetUnfolder]: 26332/31772 cut-off events. [2023-01-28 08:40:33,414 INFO L131 PetriNetUnfolder]: For 184435/184435 co-relation queries the response was YES. [2023-01-28 08:40:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161790 conditions, 31772 events. 26332/31772 cut-off events. For 184435/184435 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 120110 event pairs, 1722 based on Foata normal form. 808/32580 useless extension candidates. Maximal degree in co-relation 139667. Up to 13156 conditions per place. [2023-01-28 08:40:33,557 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 138 selfloop transitions, 12 changer transitions 47/197 dead transitions. [2023-01-28 08:40:33,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 197 transitions, 1762 flow [2023-01-28 08:40:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:40:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:40:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 808 transitions. [2023-01-28 08:40:33,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459613196814562 [2023-01-28 08:40:33,560 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 808 transitions. [2023-01-28 08:40:33,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 808 transitions. [2023-01-28 08:40:33,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:33,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 808 transitions. [2023-01-28 08:40:33,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 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 08:40:33,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:40:33,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 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 08:40:33,564 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 545 flow. Second operand 6 states and 808 transitions. [2023-01-28 08:40:33,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 197 transitions, 1762 flow [2023-01-28 08:40:33,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 197 transitions, 1685 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-01-28 08:40:33,952 INFO L231 Difference]: Finished difference. Result has 93 places, 70 transitions, 548 flow [2023-01-28 08:40:33,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=93, PETRI_TRANSITIONS=70} [2023-01-28 08:40:33,952 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-01-28 08:40:33,952 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 70 transitions, 548 flow [2023-01-28 08:40:33,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 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 08:40:33,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:33,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:33,957 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 08:40:34,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:34,154 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 4 more)] === [2023-01-28 08:40:34,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:34,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1490440730, now seen corresponding path program 2 times [2023-01-28 08:40:34,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:34,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662974560] [2023-01-28 08:40:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:34,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:40:34,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:34,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662974560] [2023-01-28 08:40:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662974560] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:40:34,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906071328] [2023-01-28 08:40:34,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:40:34,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:40:34,377 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 08:40:34,392 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 08:40:34,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:40:34,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:40:34,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:40:34,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:40:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 08:40:34,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:40:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906071328] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:40:34,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:40:34,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-01-28 08:40:34,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512800299] [2023-01-28 08:40:34,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:40:34,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:40:34,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:40:34,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:40:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:40:34,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 08:40:34,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 70 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:40:34,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:40:34,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 08:40:34,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:40:36,694 INFO L130 PetriNetUnfolder]: 22304/26705 cut-off events. [2023-01-28 08:40:36,695 INFO L131 PetriNetUnfolder]: For 140725/140725 co-relation queries the response was YES. [2023-01-28 08:40:36,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136097 conditions, 26705 events. 22304/26705 cut-off events. For 140725/140725 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 92892 event pairs, 5480 based on Foata normal form. 592/27297 useless extension candidates. Maximal degree in co-relation 118448. Up to 19461 conditions per place. [2023-01-28 08:40:36,853 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 132 selfloop transitions, 9 changer transitions 0/141 dead transitions. [2023-01-28 08:40:36,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 1299 flow [2023-01-28 08:40:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:40:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:40:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-01-28 08:40:36,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974402730375427 [2023-01-28 08:40:36,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-01-28 08:40:36,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-01-28 08:40:36,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:40:36,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-01-28 08:40:36,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 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 08:40:36,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:36,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 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 08:40:36,858 INFO L175 Difference]: Start difference. First operand has 93 places, 70 transitions, 548 flow. Second operand 4 states and 583 transitions. [2023-01-28 08:40:36,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 1299 flow [2023-01-28 08:40:37,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 1265 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 08:40:37,406 INFO L231 Difference]: Finished difference. Result has 93 places, 71 transitions, 550 flow [2023-01-28 08:40:37,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=93, PETRI_TRANSITIONS=71} [2023-01-28 08:40:37,406 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-01-28 08:40:37,406 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 71 transitions, 550 flow [2023-01-28 08:40:37,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:40:37,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:40:37,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:40:37,412 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 08:40:37,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:37,609 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 4 more)] === [2023-01-28 08:40:37,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:40:37,609 INFO L85 PathProgramCache]: Analyzing trace with hash 460065354, now seen corresponding path program 1 times [2023-01-28 08:40:37,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:40:37,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835164733] [2023-01-28 08:40:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:37,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:40:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 08:40:37,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:40:37,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835164733] [2023-01-28 08:40:37,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835164733] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:40:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130043907] [2023-01-28 08:40:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:40:37,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:40:37,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:40:38,001 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 08:40:38,026 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 08:40:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:40:46,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 08:40:46,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:40:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 08:40:49,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:41:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:41:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130043907] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:41:39,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:41:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 10 [2023-01-28 08:41:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230188261] [2023-01-28 08:41:39,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:41:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:41:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:41:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:41:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=94, Unknown=2, NotChecked=0, Total=132 [2023-01-28 08:41:39,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 293 [2023-01-28 08:41:39,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 71 transitions, 550 flow. Second operand has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 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 08:41:39,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:41:39,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 293 [2023-01-28 08:41:39,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:41:47,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:41:53,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:09,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:15,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:18,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:19,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:22,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:24,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:29,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:32,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:45,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:42:47,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:43:38,000 WARN L222 SmtUtils]: Spent 35.87s on a formula simplification. DAG size of input: 72 DAG size of output: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 08:43:41,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 08:43:43,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 08:43:46,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 08:43:50,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:43:53,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:43:55,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:44:00,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:44:04,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:44:07,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 08:44:09,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 08:44:10,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:44:11,652 INFO L130 PetriNetUnfolder]: 211977/255614 cut-off events. [2023-01-28 08:44:11,653 INFO L131 PetriNetUnfolder]: For 1368946/1368946 co-relation queries the response was YES. [2023-01-28 08:44:12,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321135 conditions, 255614 events. 211977/255614 cut-off events. For 1368946/1368946 co-relation queries the response was YES. Maximal size of possible extension queue 5867. Compared 1209327 event pairs, 5023 based on Foata normal form. 3240/258854 useless extension candidates. Maximal degree in co-relation 1039163. Up to 96461 conditions per place. [2023-01-28 08:44:13,260 INFO L137 encePairwiseOnDemand]: 279/293 looper letters, 696 selfloop transitions, 195 changer transitions 479/1370 dead transitions. [2023-01-28 08:44:13,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 1370 transitions, 11934 flow [2023-01-28 08:44:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 08:44:13,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 08:44:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5079 transitions. [2023-01-28 08:44:13,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4952705997074598 [2023-01-28 08:44:13,270 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5079 transitions. [2023-01-28 08:44:13,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5079 transitions. [2023-01-28 08:44:13,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:44:13,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5079 transitions. [2023-01-28 08:44:13,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 145.11428571428573) internal successors, (5079), 35 states have internal predecessors, (5079), 0 states have call successors, (0), 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 08:44:13,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 293.0) internal successors, (10548), 36 states have internal predecessors, (10548), 0 states have call successors, (0), 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 08:44:13,291 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 293.0) internal successors, (10548), 36 states have internal predecessors, (10548), 0 states have call successors, (0), 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 08:44:13,291 INFO L175 Difference]: Start difference. First operand has 93 places, 71 transitions, 550 flow. Second operand 35 states and 5079 transitions. [2023-01-28 08:44:13,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 1370 transitions, 11934 flow [2023-01-28 08:44:32,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 1370 transitions, 11737 flow, removed 63 selfloop flow, removed 2 redundant places. [2023-01-28 08:44:32,538 INFO L231 Difference]: Finished difference. Result has 148 places, 290 transitions, 3022 flow [2023-01-28 08:44:32,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3022, PETRI_PLACES=148, PETRI_TRANSITIONS=290} [2023-01-28 08:44:32,539 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 98 predicate places. [2023-01-28 08:44:32,539 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 290 transitions, 3022 flow [2023-01-28 08:44:32,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 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 08:44:32,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:44:32,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:44:32,546 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 08:44:32,740 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,SelfDestructingSolverStorable20 [2023-01-28 08:44:32,740 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 4 more)] === [2023-01-28 08:44:32,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:44:32,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1244368104, now seen corresponding path program 2 times [2023-01-28 08:44:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:44:32,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028080972] [2023-01-28 08:44:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:44:32,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:44:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:44:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:44:33,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:44:33,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028080972] [2023-01-28 08:44:33,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028080972] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:44:33,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664600665] [2023-01-28 08:44:33,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:44:33,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:44:33,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:44:33,323 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 08:44:33,325 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 08:44:45,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:44:45,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:44:45,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 08:44:45,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:44:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 08:44:47,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:45:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:45:19,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664600665] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:45:19,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:45:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 15 [2023-01-28 08:45:19,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915984166] [2023-01-28 08:45:19,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:45:19,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 08:45:19,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:45:19,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 08:45:19,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-01-28 08:45:19,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 08:45:19,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 290 transitions, 3022 flow. Second operand has 17 states, 17 states have (on average 120.52941176470588) internal successors, (2049), 17 states have internal predecessors, (2049), 0 states have call successors, (0), 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 08:45:19,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:45:19,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 08:45:19,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:45:21,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:45:24,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:45:28,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:45:31,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:45:33,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:45:36,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:45:38,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:45:41,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:45:43,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:45:49,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:46:07,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:46:11,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:46:25,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:46:28,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:46:48,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:46:52,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:46:57,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:47:12,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:47:14,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:47:16,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:47:29,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:47:32,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:47:44,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:47:49,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:47:51,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:48:04,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:48:19,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:48:41,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:48:46,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:48:54,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:49:03,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:49:42,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:49:51,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:50:07,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:50:23,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:50:25,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:50:27,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:51:52,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:52:11,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:52:13,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:52:15,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:52:33,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:53:01,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 08:53:03,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-01-28 08:53:22,986 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 08:53:22,987 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 08:53:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-01-28 08:53:23,454 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-28 08:53:23,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-28 08:53:23,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:53:23,654 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. [2023-01-28 08:53:23,656 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-01-28 08:53:23,656 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-28 08:53:23,656 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-28 08:53:23,656 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-28 08:53:23,656 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-01-28 08:53:23,656 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-01-28 08:53:23,657 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-01-28 08:53:23,660 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 08:53:23,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 08:53:23,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 08:53:23 BasicIcfg [2023-01-28 08:53:23,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 08:53:23,663 INFO L158 Benchmark]: Toolchain (without parser) took 829789.54ms. Allocated memory was 381.7MB in the beginning and 13.9GB in the end (delta: 13.5GB). Free memory was 340.6MB in the beginning and 10.0GB in the end (delta: -9.6GB). Peak memory consumption was 3.9GB. Max. memory is 16.0GB. [2023-01-28 08:53:23,663 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 08:53:23,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.95ms. Allocated memory is still 381.7MB. Free memory was 340.6MB in the beginning and 329.0MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 08:53:23,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.09ms. Allocated memory is still 381.7MB. Free memory was 329.0MB in the beginning and 327.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 08:53:23,664 INFO L158 Benchmark]: Boogie Preprocessor took 22.37ms. Allocated memory is still 381.7MB. Free memory was 327.2MB in the beginning and 325.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 08:53:23,664 INFO L158 Benchmark]: RCFGBuilder took 390.10ms. Allocated memory is still 381.7MB. Free memory was 325.6MB in the beginning and 307.6MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 08:53:23,664 INFO L158 Benchmark]: TraceAbstraction took 829090.92ms. Allocated memory was 381.7MB in the beginning and 13.9GB in the end (delta: 13.5GB). Free memory was 306.7MB in the beginning and 10.0GB in the end (delta: -9.7GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-01-28 08:53:23,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 238.95ms. Allocated memory is still 381.7MB. Free memory was 340.6MB in the beginning and 329.0MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.09ms. Allocated memory is still 381.7MB. Free memory was 329.0MB in the beginning and 327.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.37ms. Allocated memory is still 381.7MB. Free memory was 327.2MB in the beginning and 325.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 390.10ms. Allocated memory is still 381.7MB. Free memory was 325.6MB in the beginning and 307.6MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 829090.92ms. Allocated memory was 381.7MB in the beginning and 13.9GB in the end (delta: 13.5GB). Free memory was 306.7MB in the beginning and 10.0GB in the end (delta: -9.7GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 152 PlacesBefore, 50 PlacesAfterwards, 147 TransitionsBefore, 37 TransitionsAfterwards, 2916 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 12 ConcurrentYvCompositions, 8 ChoiceCompositions, 124 TotalNumberOfCompositions, 3543 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3543, independent: 3543, independent conditional: 0, independent unconditional: 3543, 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: 1564, independent: 1564, independent conditional: 0, independent unconditional: 1564, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3543, independent: 1979, independent conditional: 0, independent unconditional: 1979, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1564, unknown conditional: 0, unknown unconditional: 1564] , Statistics on independence cache: Total cache size (in pairs): 147, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, 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: 117]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 192 locations, 7 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: 828.9s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 702.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 49 mSolverCounterUnknown, 2330 SdHoareTripleChecker+Valid, 204.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2330 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 201.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 144 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8487 IncrementalHoareTripleChecker+Invalid, 8680 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 144 mSolverCounterUnsat, 0 mSDtfsCounter, 8487 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 940 GetRequests, 683 SyntacticMatches, 21 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7854 ImplicationChecksByTransitivity, 396.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3022occurred in iteration=21, InterpolantAutomatonStates: 124, 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: 0.3s SsaConstructionTime, 23.0s SatisfiabilityAnalysisTime, 92.7s InterpolantComputationTime, 1238 NumberOfCodeBlocks, 1234 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1442 ConstructedInterpolants, 0 QuantifiedInterpolants, 28995 SizeOfPredicates, 108 NumberOfNonLiveVariables, 4554 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 43 InterpolantComputations, 15 PerfectInterpolantSequences, 117/152 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