/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 19:23:40,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:23:40,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:23:40,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:23:40,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:23:40,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:23:40,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:23:40,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:23:40,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:23:40,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:23:40,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:23:40,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:23:40,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:23:40,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:23:40,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:23:40,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:23:40,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:23:40,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:23:40,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:23:40,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:23:40,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:23:40,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:23:40,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:23:40,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:23:40,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:23:40,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:23:40,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:23:40,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:23:40,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:23:40,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:23:40,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:23:40,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:23:40,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:23:40,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:23:40,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:23:40,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:23:40,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:23:40,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:23:40,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:23:40,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:23:40,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:23:40,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 19:23:40,385 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:23:40,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:23:40,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:23:40,386 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:23:40,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:23:40,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:23:40,387 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:23:40,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:23:40,387 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:23:40,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:23:40,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:23:40,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:23:40,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:23:40,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:23:40,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:23:40,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:23:40,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:23:40,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:23:40,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:23:40,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:23:40,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:23:40,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:23:40,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:23:40,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:23:40,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:23:40,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:23:40,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:23:40,390 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:23:40,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:23:40,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:23:40,390 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:23:40,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:23:40,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:23:40,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:23:40,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:23:40,662 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:23:40,664 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:23:40,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2022-12-11 19:23:41,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:23:41,818 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:23:41,818 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2022-12-11 19:23:41,825 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f32c3559/0cf3ea07174244b0abf33f80322c5560/FLAGd84565adb [2022-12-11 19:23:41,837 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f32c3559/0cf3ea07174244b0abf33f80322c5560 [2022-12-11 19:23:41,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:23:41,840 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:23:41,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:23:41,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:23:41,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:23:41,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:23:41" (1/1) ... [2022-12-11 19:23:41,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd9fd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:41, skipping insertion in model container [2022-12-11 19:23:41,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:23:41" (1/1) ... [2022-12-11 19:23:41,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:23:41,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:23:42,021 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-12-11 19:23:42,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:23:42,044 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:23:42,078 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-12-11 19:23:42,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:23:42,096 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:23:42,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42 WrapperNode [2022-12-11 19:23:42,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:23:42,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:23:42,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:23:42,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:23:42,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,155 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 297 [2022-12-11 19:23:42,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:23:42,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:23:42,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:23:42,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:23:42,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,185 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:23:42,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:23:42,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:23:42,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:23:42,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (1/1) ... [2022-12-11 19:23:42,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:23:42,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:23:42,212 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) [2022-12-11 19:23:42,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 19:23:42,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:23:42,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:23:42,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:23:42,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 19:23:42,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 19:23:42,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 19:23:42,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 19:23:42,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 19:23:42,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 19:23:42,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 19:23:42,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:23:42,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 19:23:42,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:23:42,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:23:42,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:23:42,245 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 19:23:42,329 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:23:42,331 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:23:42,727 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:23:42,734 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:23:42,735 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-11 19:23:42,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:23:42 BoogieIcfgContainer [2022-12-11 19:23:42,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:23:42,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:23:42,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:23:42,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:23:42,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:23:41" (1/3) ... [2022-12-11 19:23:42,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec8702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:23:42, skipping insertion in model container [2022-12-11 19:23:42,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:23:42" (2/3) ... [2022-12-11 19:23:42,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec8702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:23:42, skipping insertion in model container [2022-12-11 19:23:42,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:23:42" (3/3) ... [2022-12-11 19:23:42,742 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-12-11 19:23:42,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:23:42,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 19:23:42,753 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:23:42,876 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-11 19:23:42,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 341 transitions, 706 flow [2022-12-11 19:23:43,021 INFO L130 PetriNetUnfolder]: 26/338 cut-off events. [2022-12-11 19:23:43,021 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:23:43,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 338 events. 26/338 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 791 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-12-11 19:23:43,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 341 transitions, 706 flow [2022-12-11 19:23:43,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 328 transitions, 674 flow [2022-12-11 19:23:43,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:23:43,059 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;@1afc67c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:23:43,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 19:23:43,145 INFO L130 PetriNetUnfolder]: 26/327 cut-off events. [2022-12-11 19:23:43,146 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:23:43,146 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:23:43,147 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:23:43,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:23:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:23:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1950208797, now seen corresponding path program 1 times [2022-12-11 19:23:43,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:23:43,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254774147] [2022-12-11 19:23:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:23:43,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:23:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:23:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:23:43,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:23:43,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254774147] [2022-12-11 19:23:43,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254774147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:23:43,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:23:43,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 19:23:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691251887] [2022-12-11 19:23:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:23:43,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-11 19:23:43,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:23:43,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-11 19:23:43,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-11 19:23:43,449 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 341 [2022-12-11 19:23:43,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 328 transitions, 674 flow. Second operand has 2 states, 2 states have (on average 319.5) internal successors, (639), 2 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:43,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:23:43,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 341 [2022-12-11 19:23:43,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:23:43,509 INFO L130 PetriNetUnfolder]: 7/309 cut-off events. [2022-12-11 19:23:43,509 INFO L131 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-12-11 19:23:43,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 309 events. 7/309 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 753 event pairs, 0 based on Foata normal form. 38/325 useless extension candidates. Maximal degree in co-relation 239. Up to 7 conditions per place. [2022-12-11 19:23:43,515 INFO L137 encePairwiseOnDemand]: 322/341 looper letters, 6 selfloop transitions, 0 changer transitions 3/309 dead transitions. [2022-12-11 19:23:43,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 309 transitions, 648 flow [2022-12-11 19:23:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-11 19:23:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-11 19:23:43,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 655 transitions. [2022-12-11 19:23:43,528 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9604105571847508 [2022-12-11 19:23:43,529 INFO L175 Difference]: Start difference. First operand has 312 places, 328 transitions, 674 flow. Second operand 2 states and 655 transitions. [2022-12-11 19:23:43,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 309 transitions, 648 flow [2022-12-11 19:23:43,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 309 transitions, 636 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-11 19:23:43,539 INFO L231 Difference]: Finished difference. Result has 307 places, 306 transitions, 618 flow [2022-12-11 19:23:43,541 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=618, PETRI_PLACES=307, PETRI_TRANSITIONS=306} [2022-12-11 19:23:43,545 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, -5 predicate places. [2022-12-11 19:23:43,546 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 306 transitions, 618 flow [2022-12-11 19:23:43,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 319.5) internal successors, (639), 2 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:43,546 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:23:43,547 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:23:43,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:23:43,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:23:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:23:43,549 INFO L85 PathProgramCache]: Analyzing trace with hash 648841092, now seen corresponding path program 1 times [2022-12-11 19:23:43,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:23:43,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814008946] [2022-12-11 19:23:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:23:43,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:23:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:23:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:23:43,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:23:43,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814008946] [2022-12-11 19:23:43,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814008946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:23:43,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:23:43,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 19:23:43,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402200280] [2022-12-11 19:23:43,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:23:43,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 19:23:43,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:23:43,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 19:23:43,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-11 19:23:43,861 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 341 [2022-12-11 19:23:43,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 306 transitions, 618 flow. Second operand has 5 states, 5 states have (on average 305.8) internal successors, (1529), 5 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:43,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:23:43,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 341 [2022-12-11 19:23:43,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:23:43,941 INFO L130 PetriNetUnfolder]: 7/312 cut-off events. [2022-12-11 19:23:43,942 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2022-12-11 19:23:43,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 312 events. 7/312 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 750 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 337. Up to 16 conditions per place. [2022-12-11 19:23:43,944 INFO L137 encePairwiseOnDemand]: 336/341 looper letters, 18 selfloop transitions, 4 changer transitions 0/310 dead transitions. [2022-12-11 19:23:43,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 310 transitions, 670 flow [2022-12-11 19:23:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:23:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:23:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1538 transitions. [2022-12-11 19:23:43,952 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9020527859237537 [2022-12-11 19:23:43,952 INFO L175 Difference]: Start difference. First operand has 307 places, 306 transitions, 618 flow. Second operand 5 states and 1538 transitions. [2022-12-11 19:23:43,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 310 transitions, 670 flow [2022-12-11 19:23:43,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 310 transitions, 670 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 19:23:43,958 INFO L231 Difference]: Finished difference. Result has 309 places, 307 transitions, 634 flow [2022-12-11 19:23:43,958 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=634, PETRI_PLACES=309, PETRI_TRANSITIONS=307} [2022-12-11 19:23:43,959 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, -3 predicate places. [2022-12-11 19:23:43,959 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 307 transitions, 634 flow [2022-12-11 19:23:43,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 305.8) internal successors, (1529), 5 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:43,960 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:23:43,960 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:23:43,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 19:23:43,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:23:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:23:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1579899444, now seen corresponding path program 1 times [2022-12-11 19:23:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:23:43,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719789896] [2022-12-11 19:23:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:23:43,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:23:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:23:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:23:44,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:23:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719789896] [2022-12-11 19:23:44,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719789896] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:23:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782088724] [2022-12-11 19:23:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:23:44,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:23:44,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:23:44,241 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) [2022-12-11 19:23:44,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 19:23:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:23:44,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-11 19:23:44,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:23:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:23:44,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:23:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:23:44,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782088724] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:23:44,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:23:44,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-11 19:23:44,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154807053] [2022-12-11 19:23:44,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:23:44,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 19:23:44,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:23:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 19:23:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:23:44,589 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 341 [2022-12-11 19:23:44,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 307 transitions, 634 flow. Second operand has 14 states, 14 states have (on average 304.7857142857143) internal successors, (4267), 14 states have internal predecessors, (4267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:44,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:23:44,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 341 [2022-12-11 19:23:44,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:23:44,748 INFO L130 PetriNetUnfolder]: 7/321 cut-off events. [2022-12-11 19:23:44,748 INFO L131 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-12-11 19:23:44,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 321 events. 7/321 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 739 event pairs, 0 based on Foata normal form. 2/305 useless extension candidates. Maximal degree in co-relation 362. Up to 13 conditions per place. [2022-12-11 19:23:44,751 INFO L137 encePairwiseOnDemand]: 333/341 looper letters, 19 selfloop transitions, 11 changer transitions 0/317 dead transitions. [2022-12-11 19:23:44,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 317 transitions, 716 flow [2022-12-11 19:23:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:23:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:23:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3354 transitions. [2022-12-11 19:23:44,756 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8941615569181551 [2022-12-11 19:23:44,756 INFO L175 Difference]: Start difference. First operand has 309 places, 307 transitions, 634 flow. Second operand 11 states and 3354 transitions. [2022-12-11 19:23:44,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 317 transitions, 716 flow [2022-12-11 19:23:44,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 317 transitions, 710 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 19:23:44,760 INFO L231 Difference]: Finished difference. Result has 319 places, 313 transitions, 683 flow [2022-12-11 19:23:44,760 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=683, PETRI_PLACES=319, PETRI_TRANSITIONS=313} [2022-12-11 19:23:44,761 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, 7 predicate places. [2022-12-11 19:23:44,762 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 313 transitions, 683 flow [2022-12-11 19:23:44,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 304.7857142857143) internal successors, (4267), 14 states have internal predecessors, (4267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:44,764 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:23:44,765 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:23:44,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 19:23:44,972 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 [2022-12-11 19:23:44,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:23:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:23:44,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1417013068, now seen corresponding path program 2 times [2022-12-11 19:23:44,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:23:44,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475349533] [2022-12-11 19:23:44,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:23:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:23:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:23:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-11 19:23:45,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:23:45,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475349533] [2022-12-11 19:23:45,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475349533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:23:45,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:23:45,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-11 19:23:45,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982385375] [2022-12-11 19:23:45,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:23:45,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 19:23:45,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:23:45,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 19:23:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:23:45,741 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 341 [2022-12-11 19:23:45,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 313 transitions, 683 flow. Second operand has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:45,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:23:45,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 341 [2022-12-11 19:23:45,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:23:49,580 INFO L130 PetriNetUnfolder]: 9436/28906 cut-off events. [2022-12-11 19:23:49,581 INFO L131 PetriNetUnfolder]: For 592/627 co-relation queries the response was YES. [2022-12-11 19:23:49,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43425 conditions, 28906 events. 9436/28906 cut-off events. For 592/627 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 364994 event pairs, 3322 based on Foata normal form. 4/26074 useless extension candidates. Maximal degree in co-relation 43417. Up to 4897 conditions per place. [2022-12-11 19:23:49,732 INFO L137 encePairwiseOnDemand]: 314/341 looper letters, 308 selfloop transitions, 46 changer transitions 10/606 dead transitions. [2022-12-11 19:23:49,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 606 transitions, 2028 flow [2022-12-11 19:23:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-11 19:23:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-11 19:23:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5799 transitions. [2022-12-11 19:23:49,740 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7729938683017862 [2022-12-11 19:23:49,741 INFO L175 Difference]: Start difference. First operand has 319 places, 313 transitions, 683 flow. Second operand 22 states and 5799 transitions. [2022-12-11 19:23:49,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 606 transitions, 2028 flow [2022-12-11 19:23:49,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 606 transitions, 2019 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-11 19:23:49,749 INFO L231 Difference]: Finished difference. Result has 353 places, 350 transitions, 973 flow [2022-12-11 19:23:49,749 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=973, PETRI_PLACES=353, PETRI_TRANSITIONS=350} [2022-12-11 19:23:49,750 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, 41 predicate places. [2022-12-11 19:23:49,750 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 350 transitions, 973 flow [2022-12-11 19:23:49,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:49,752 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:23:49,752 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:23:49,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 19:23:49,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:23:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:23:49,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1951347622, now seen corresponding path program 3 times [2022-12-11 19:23:49,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:23:49,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499254775] [2022-12-11 19:23:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:23:49,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:23:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:23:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-11 19:23:50,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:23:50,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499254775] [2022-12-11 19:23:50,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499254775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:23:50,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:23:50,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-11 19:23:50,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305355719] [2022-12-11 19:23:50,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:23:50,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 19:23:50,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:23:50,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 19:23:50,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:23:50,383 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 341 [2022-12-11 19:23:50,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 350 transitions, 973 flow. Second operand has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:50,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:23:50,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 341 [2022-12-11 19:23:50,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:23:57,030 INFO L130 PetriNetUnfolder]: 14307/44506 cut-off events. [2022-12-11 19:23:57,030 INFO L131 PetriNetUnfolder]: For 19061/19156 co-relation queries the response was YES. [2022-12-11 19:23:57,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82999 conditions, 44506 events. 14307/44506 cut-off events. For 19061/19156 co-relation queries the response was YES. Maximal size of possible extension queue 1700. Compared 600309 event pairs, 4069 based on Foata normal form. 9/40858 useless extension candidates. Maximal degree in co-relation 82975. Up to 7069 conditions per place. [2022-12-11 19:23:57,470 INFO L137 encePairwiseOnDemand]: 314/341 looper letters, 418 selfloop transitions, 106 changer transitions 10/776 dead transitions. [2022-12-11 19:23:57,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 776 transitions, 3511 flow [2022-12-11 19:23:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 19:23:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 19:23:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 7397 transitions. [2022-12-11 19:23:57,483 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7747172182656054 [2022-12-11 19:23:57,483 INFO L175 Difference]: Start difference. First operand has 353 places, 350 transitions, 973 flow. Second operand 28 states and 7397 transitions. [2022-12-11 19:23:57,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 776 transitions, 3511 flow [2022-12-11 19:23:57,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 776 transitions, 3487 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-12-11 19:23:57,850 INFO L231 Difference]: Finished difference. Result has 392 places, 446 transitions, 2026 flow [2022-12-11 19:23:57,851 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2026, PETRI_PLACES=392, PETRI_TRANSITIONS=446} [2022-12-11 19:23:57,852 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, 80 predicate places. [2022-12-11 19:23:57,852 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 446 transitions, 2026 flow [2022-12-11 19:23:57,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:57,854 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:23:57,854 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:23:57,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 19:23:57,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:23:57,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:23:57,855 INFO L85 PathProgramCache]: Analyzing trace with hash -970579354, now seen corresponding path program 4 times [2022-12-11 19:23:57,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:23:57,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012814496] [2022-12-11 19:23:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:23:57,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:23:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:23:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-11 19:23:58,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:23:58,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012814496] [2022-12-11 19:23:58,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012814496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:23:58,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:23:58,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-11 19:23:58,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875813798] [2022-12-11 19:23:58,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:23:58,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 19:23:58,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:23:58,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 19:23:58,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:23:58,359 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 341 [2022-12-11 19:23:58,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 446 transitions, 2026 flow. Second operand has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:23:58,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:23:58,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 341 [2022-12-11 19:23:58,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:24:06,103 INFO L130 PetriNetUnfolder]: 15717/50800 cut-off events. [2022-12-11 19:24:06,103 INFO L131 PetriNetUnfolder]: For 86722/87315 co-relation queries the response was YES. [2022-12-11 19:24:06,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115585 conditions, 50800 events. 15717/50800 cut-off events. For 86722/87315 co-relation queries the response was YES. Maximal size of possible extension queue 2006. Compared 709926 event pairs, 4434 based on Foata normal form. 172/46855 useless extension candidates. Maximal degree in co-relation 115543. Up to 7285 conditions per place. [2022-12-11 19:24:06,888 INFO L137 encePairwiseOnDemand]: 315/341 looper letters, 377 selfloop transitions, 110 changer transitions 6/735 dead transitions. [2022-12-11 19:24:06,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 735 transitions, 4493 flow [2022-12-11 19:24:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-11 19:24:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-11 19:24:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4559 transitions. [2022-12-11 19:24:06,894 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7864412627220977 [2022-12-11 19:24:06,894 INFO L175 Difference]: Start difference. First operand has 392 places, 446 transitions, 2026 flow. Second operand 17 states and 4559 transitions. [2022-12-11 19:24:06,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 735 transitions, 4493 flow [2022-12-11 19:24:07,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 735 transitions, 4307 flow, removed 91 selfloop flow, removed 4 redundant places. [2022-12-11 19:24:07,685 INFO L231 Difference]: Finished difference. Result has 413 places, 493 transitions, 2761 flow [2022-12-11 19:24:07,686 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2761, PETRI_PLACES=413, PETRI_TRANSITIONS=493} [2022-12-11 19:24:07,686 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, 101 predicate places. [2022-12-11 19:24:07,686 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 493 transitions, 2761 flow [2022-12-11 19:24:07,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:24:07,687 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:24:07,688 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:24:07,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 19:24:07,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:24:07,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:24:07,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1252073612, now seen corresponding path program 5 times [2022-12-11 19:24:07,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:24:07,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190701923] [2022-12-11 19:24:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:24:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:24:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:24:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-11 19:24:08,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:24:08,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190701923] [2022-12-11 19:24:08,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190701923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:24:08,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:24:08,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-11 19:24:08,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626796822] [2022-12-11 19:24:08,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:24:08,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 19:24:08,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:24:08,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 19:24:08,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:24:08,253 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 341 [2022-12-11 19:24:08,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 493 transitions, 2761 flow. Second operand has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:24:08,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:24:08,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 341 [2022-12-11 19:24:08,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:24:18,532 INFO L130 PetriNetUnfolder]: 18769/57273 cut-off events. [2022-12-11 19:24:18,532 INFO L131 PetriNetUnfolder]: For 165678/166897 co-relation queries the response was YES. [2022-12-11 19:24:19,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148169 conditions, 57273 events. 18769/57273 cut-off events. For 165678/166897 co-relation queries the response was YES. Maximal size of possible extension queue 2243. Compared 795732 event pairs, 8113 based on Foata normal form. 77/52824 useless extension candidates. Maximal degree in co-relation 148117. Up to 14740 conditions per place. [2022-12-11 19:24:19,362 INFO L137 encePairwiseOnDemand]: 318/341 looper letters, 379 selfloop transitions, 94 changer transitions 6/721 dead transitions. [2022-12-11 19:24:19,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 721 transitions, 5106 flow [2022-12-11 19:24:19,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-11 19:24:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-11 19:24:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3988 transitions. [2022-12-11 19:24:19,368 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7796676441837732 [2022-12-11 19:24:19,368 INFO L175 Difference]: Start difference. First operand has 413 places, 493 transitions, 2761 flow. Second operand 15 states and 3988 transitions. [2022-12-11 19:24:19,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 721 transitions, 5106 flow [2022-12-11 19:24:20,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 721 transitions, 4898 flow, removed 66 selfloop flow, removed 6 redundant places. [2022-12-11 19:24:20,564 INFO L231 Difference]: Finished difference. Result has 432 places, 536 transitions, 3488 flow [2022-12-11 19:24:20,564 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3488, PETRI_PLACES=432, PETRI_TRANSITIONS=536} [2022-12-11 19:24:20,565 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, 120 predicate places. [2022-12-11 19:24:20,565 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 536 transitions, 3488 flow [2022-12-11 19:24:20,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:24:20,566 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:24:20,566 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:24:20,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 19:24:20,566 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:24:20,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:24:20,567 INFO L85 PathProgramCache]: Analyzing trace with hash 500872680, now seen corresponding path program 6 times [2022-12-11 19:24:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:24:20,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910059090] [2022-12-11 19:24:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:24:20,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:24:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:24:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-11 19:24:20,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:24:20,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910059090] [2022-12-11 19:24:20,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910059090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:24:20,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:24:20,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-11 19:24:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269470026] [2022-12-11 19:24:20,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:24:21,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 19:24:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:24:21,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 19:24:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:24:21,002 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 341 [2022-12-11 19:24:21,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 536 transitions, 3488 flow. Second operand has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:24:21,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:24:21,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 341 [2022-12-11 19:24:21,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:24:36,169 INFO L130 PetriNetUnfolder]: 25179/83979 cut-off events. [2022-12-11 19:24:36,169 INFO L131 PetriNetUnfolder]: For 319813/321339 co-relation queries the response was YES. [2022-12-11 19:24:37,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220047 conditions, 83979 events. 25179/83979 cut-off events. For 319813/321339 co-relation queries the response was YES. Maximal size of possible extension queue 2883. Compared 1252714 event pairs, 7591 based on Foata normal form. 272/77221 useless extension candidates. Maximal degree in co-relation 219983. Up to 11681 conditions per place. [2022-12-11 19:24:37,660 INFO L137 encePairwiseOnDemand]: 316/341 looper letters, 431 selfloop transitions, 151 changer transitions 7/831 dead transitions. [2022-12-11 19:24:37,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 831 transitions, 6728 flow [2022-12-11 19:24:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-11 19:24:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-11 19:24:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4238 transitions. [2022-12-11 19:24:37,676 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7767595307917888 [2022-12-11 19:24:37,676 INFO L175 Difference]: Start difference. First operand has 432 places, 536 transitions, 3488 flow. Second operand 16 states and 4238 transitions. [2022-12-11 19:24:37,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 831 transitions, 6728 flow [2022-12-11 19:24:39,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 831 transitions, 6560 flow, removed 84 selfloop flow, removed 2 redundant places. [2022-12-11 19:24:39,499 INFO L231 Difference]: Finished difference. Result has 454 places, 579 transitions, 4482 flow [2022-12-11 19:24:39,499 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=3334, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4482, PETRI_PLACES=454, PETRI_TRANSITIONS=579} [2022-12-11 19:24:39,500 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, 142 predicate places. [2022-12-11 19:24:39,500 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 579 transitions, 4482 flow [2022-12-11 19:24:39,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:24:39,501 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:24:39,501 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:24:39,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 19:24:39,501 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:24:39,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:24:39,502 INFO L85 PathProgramCache]: Analyzing trace with hash 162956790, now seen corresponding path program 7 times [2022-12-11 19:24:39,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:24:39,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772078652] [2022-12-11 19:24:39,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:24:39,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:24:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:24:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-11 19:24:39,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:24:39,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772078652] [2022-12-11 19:24:39,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772078652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:24:39,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:24:39,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-11 19:24:39,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232968997] [2022-12-11 19:24:39,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:24:39,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 19:24:39,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:24:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 19:24:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:24:39,877 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 341 [2022-12-11 19:24:39,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 579 transitions, 4482 flow. Second operand has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:24:39,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:24:39,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 341 [2022-12-11 19:24:39,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:24:55,754 INFO L130 PetriNetUnfolder]: 26515/87896 cut-off events. [2022-12-11 19:24:55,755 INFO L131 PetriNetUnfolder]: For 432217/433568 co-relation queries the response was YES. [2022-12-11 19:24:57,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247424 conditions, 87896 events. 26515/87896 cut-off events. For 432217/433568 co-relation queries the response was YES. Maximal size of possible extension queue 3076. Compared 1320471 event pairs, 7131 based on Foata normal form. 263/81159 useless extension candidates. Maximal degree in co-relation 247350. Up to 9599 conditions per place. [2022-12-11 19:24:57,829 INFO L137 encePairwiseOnDemand]: 316/341 looper letters, 447 selfloop transitions, 223 changer transitions 10/922 dead transitions. [2022-12-11 19:24:57,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 922 transitions, 8109 flow [2022-12-11 19:24:57,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 19:24:57,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 19:24:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5302 transitions. [2022-12-11 19:24:57,834 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7774193548387097 [2022-12-11 19:24:57,834 INFO L175 Difference]: Start difference. First operand has 454 places, 579 transitions, 4482 flow. Second operand 20 states and 5302 transitions. [2022-12-11 19:24:57,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 922 transitions, 8109 flow [2022-12-11 19:25:01,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 922 transitions, 7775 flow, removed 166 selfloop flow, removed 3 redundant places. [2022-12-11 19:25:01,392 INFO L231 Difference]: Finished difference. Result has 482 places, 632 transitions, 5656 flow [2022-12-11 19:25:01,392 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5656, PETRI_PLACES=482, PETRI_TRANSITIONS=632} [2022-12-11 19:25:01,393 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, 170 predicate places. [2022-12-11 19:25:01,393 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 632 transitions, 5656 flow [2022-12-11 19:25:01,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:01,394 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:01,394 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 19:25:01,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:25:01,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash -927473336, now seen corresponding path program 8 times [2022-12-11 19:25:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:01,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118626688] [2022-12-11 19:25:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-11 19:25:01,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:01,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118626688] [2022-12-11 19:25:01,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118626688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:01,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:01,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-11 19:25:01,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157135276] [2022-12-11 19:25:01,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:01,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 19:25:01,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 19:25:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:25:01,772 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 341 [2022-12-11 19:25:01,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 632 transitions, 5656 flow. Second operand has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:01,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:01,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 341 [2022-12-11 19:25:01,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:20,525 INFO L130 PetriNetUnfolder]: 27422/90630 cut-off events. [2022-12-11 19:25:20,525 INFO L131 PetriNetUnfolder]: For 492596/494008 co-relation queries the response was YES. [2022-12-11 19:25:22,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261111 conditions, 90630 events. 27422/90630 cut-off events. For 492596/494008 co-relation queries the response was YES. Maximal size of possible extension queue 3204. Compared 1369464 event pairs, 7460 based on Foata normal form. 460/83857 useless extension candidates. Maximal degree in co-relation 261024. Up to 12663 conditions per place. [2022-12-11 19:25:22,597 INFO L137 encePairwiseOnDemand]: 313/341 looper letters, 587 selfloop transitions, 251 changer transitions 11/1091 dead transitions. [2022-12-11 19:25:22,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1091 transitions, 10798 flow [2022-12-11 19:25:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 19:25:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 19:25:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6924 transitions. [2022-12-11 19:25:22,602 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7809609745093616 [2022-12-11 19:25:22,602 INFO L175 Difference]: Start difference. First operand has 482 places, 632 transitions, 5656 flow. Second operand 26 states and 6924 transitions. [2022-12-11 19:25:22,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 1091 transitions, 10798 flow [2022-12-11 19:25:29,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1091 transitions, 10113 flow, removed 238 selfloop flow, removed 5 redundant places. [2022-12-11 19:25:29,639 INFO L231 Difference]: Finished difference. Result has 516 places, 710 transitions, 7348 flow [2022-12-11 19:25:29,640 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=5266, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7348, PETRI_PLACES=516, PETRI_TRANSITIONS=710} [2022-12-11 19:25:29,640 INFO L295 CegarLoopForPetriNet]: 312 programPoint places, 204 predicate places. [2022-12-11 19:25:29,640 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 710 transitions, 7348 flow [2022-12-11 19:25:29,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:29,641 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:29,641 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:29,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-11 19:25:29,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:25:29,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:29,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1112808968, now seen corresponding path program 9 times [2022-12-11 19:25:29,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:29,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432875762] [2022-12-11 19:25:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-11 19:25:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:30,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432875762] [2022-12-11 19:25:30,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432875762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:30,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:30,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-11 19:25:30,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986998335] [2022-12-11 19:25:30,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:30,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 19:25:30,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:30,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 19:25:30,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-11 19:25:30,017 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 341 [2022-12-11 19:25:30,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 710 transitions, 7348 flow. Second operand has 14 states, 14 states have (on average 250.57142857142858) internal successors, (3508), 14 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:30,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:30,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 341 [2022-12-11 19:25:30,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand