/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-node-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:58:01,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:58:01,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:58:01,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:58:01,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:58:01,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:58:01,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:58:01,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:58:01,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:58:01,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:58:01,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:58:01,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:58:01,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:58:01,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:58:01,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:58:01,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:58:01,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:58:01,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:58:01,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:58:01,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:58:01,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:58:01,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:58:01,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:58:01,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:58:01,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 18:58:01,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 18:58:01,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 18:58:01,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 18:58:01,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 18:58:01,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 18:58:01,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:58:01,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:58:01,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:58:01,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:58:01,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:58:01,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:58:01,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:58:01,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:58:01,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:58:01,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:58:01,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:58:01,274 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 [2022-12-05 18:58:01,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:58:01,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:58:01,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:58:01,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:58:01,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:58:01,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:58:01,299 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:58:01,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:58:01,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:58:01,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:58:01,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:58:01,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:58:01,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:58:01,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:58:01,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:58:01,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:58:01,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:58:01,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:58:01,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:58:01,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:58:01,302 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:58:01,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:58:01,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:58:01,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:58:01,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:58:01,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:58:01,559 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:58:01,559 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:58:01,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2022-12-05 18:58:02,492 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:58:02,680 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:58:02,680 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2022-12-05 18:58:02,688 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08cbbc161/e4711a56d4064ac5ab38a2cff52cccea/FLAGd67463188 [2022-12-05 18:58:02,698 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08cbbc161/e4711a56d4064ac5ab38a2cff52cccea [2022-12-05 18:58:02,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:58:02,700 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:58:02,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:58:02,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:58:02,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:58:02,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:02,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b62a820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02, skipping insertion in model container [2022-12-05 18:58:02,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:02,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:58:02,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:58:02,875 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-node-trans.wvr.c[3945,3958] [2022-12-05 18:58:02,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:58:02,905 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:58:02,940 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-node-trans.wvr.c[3945,3958] [2022-12-05 18:58:02,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:58:02,956 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:58:02,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02 WrapperNode [2022-12-05 18:58:02,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:58:02,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:58:02,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:58:02,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:58:02,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:02,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,016 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-12-05 18:58:03,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:58:03,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:58:03,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:58:03,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:58:03,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,064 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:58:03,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:58:03,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:58:03,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:58:03,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (1/1) ... [2022-12-05 18:58:03,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:58:03,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:58:03,105 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) [2022-12-05 18:58:03,128 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 [2022-12-05 18:58:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:58:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:58:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:58:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:58:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 18:58:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 18:58:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 18:58:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 18:58:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 18:58:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 18:58:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:58:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 18:58:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:58:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:58:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:58:03,147 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:58:03,249 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:58:03,250 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:58:03,714 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:58:03,722 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:58:03,722 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-05 18:58:03,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:58:03 BoogieIcfgContainer [2022-12-05 18:58:03,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:58:03,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:58:03,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:58:03,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:58:03,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:58:02" (1/3) ... [2022-12-05 18:58:03,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc3b42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:58:03, skipping insertion in model container [2022-12-05 18:58:03,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:58:02" (2/3) ... [2022-12-05 18:58:03,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc3b42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:58:03, skipping insertion in model container [2022-12-05 18:58:03,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:58:03" (3/3) ... [2022-12-05 18:58:03,728 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2022-12-05 18:58:03,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:58:03,740 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 18:58:03,740 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:58:03,822 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 18:58:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 483 transitions, 990 flow [2022-12-05 18:58:03,997 INFO L130 PetriNetUnfolder]: 41/480 cut-off events. [2022-12-05 18:58:03,997 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 18:58:04,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 480 events. 41/480 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 632 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 406. Up to 2 conditions per place. [2022-12-05 18:58:04,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 483 transitions, 990 flow [2022-12-05 18:58:04,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 439 places, 470 transitions, 958 flow [2022-12-05 18:58:04,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:58:04,029 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;@7150262f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:58:04,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 18:58:04,128 INFO L130 PetriNetUnfolder]: 41/469 cut-off events. [2022-12-05 18:58:04,129 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 18:58:04,129 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:04,130 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:04,131 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)] === [2022-12-05 18:58:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash 323553240, now seen corresponding path program 1 times [2022-12-05 18:58:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:04,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549554146] [2022-12-05 18:58:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:04,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:58:04,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:04,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549554146] [2022-12-05 18:58:04,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549554146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:58:04,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:58:04,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:58:04,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845437129] [2022-12-05 18:58:04,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:04,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:58:04,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:04,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:58:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:58:04,662 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 483 [2022-12-05 18:58:04,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 470 transitions, 958 flow. Second operand has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:04,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:04,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 483 [2022-12-05 18:58:04,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:04,773 INFO L130 PetriNetUnfolder]: 30/548 cut-off events. [2022-12-05 18:58:04,774 INFO L131 PetriNetUnfolder]: For 54/56 co-relation queries the response was YES. [2022-12-05 18:58:04,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 548 events. 30/548 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1287 event pairs, 10 based on Foata normal form. 60/564 useless extension candidates. Maximal degree in co-relation 382. Up to 35 conditions per place. [2022-12-05 18:58:04,779 INFO L137 encePairwiseOnDemand]: 450/483 looper letters, 14 selfloop transitions, 3 changer transitions 17/445 dead transitions. [2022-12-05 18:58:04,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 445 transitions, 948 flow [2022-12-05 18:58:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:58:04,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:58:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1371 transitions. [2022-12-05 18:58:04,795 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9461697722567288 [2022-12-05 18:58:04,796 INFO L175 Difference]: Start difference. First operand has 439 places, 470 transitions, 958 flow. Second operand 3 states and 1371 transitions. [2022-12-05 18:58:04,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 445 transitions, 948 flow [2022-12-05 18:58:04,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 445 transitions, 932 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 18:58:04,812 INFO L231 Difference]: Finished difference. Result has 437 places, 426 transitions, 876 flow [2022-12-05 18:58:04,815 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=876, PETRI_PLACES=437, PETRI_TRANSITIONS=426} [2022-12-05 18:58:04,817 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -2 predicate places. [2022-12-05 18:58:04,817 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 426 transitions, 876 flow [2022-12-05 18:58:04,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:04,819 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:04,819 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:04,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:58:04,819 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)] === [2022-12-05 18:58:04,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1370301688, now seen corresponding path program 1 times [2022-12-05 18:58:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:04,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167377370] [2022-12-05 18:58:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:04,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:58:05,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:05,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167377370] [2022-12-05 18:58:05,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167377370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:58:05,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:58:05,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:58:05,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225877643] [2022-12-05 18:58:05,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:05,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:58:05,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:05,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:58:05,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:58:05,039 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 483 [2022-12-05 18:58:05,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 426 transitions, 876 flow. Second operand has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:05,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:05,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 483 [2022-12-05 18:58:05,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:05,160 INFO L130 PetriNetUnfolder]: 34/641 cut-off events. [2022-12-05 18:58:05,160 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-05 18:58:05,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 641 events. 34/641 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2101 event pairs, 10 based on Foata normal form. 0/606 useless extension candidates. Maximal degree in co-relation 653. Up to 35 conditions per place. [2022-12-05 18:58:05,168 INFO L137 encePairwiseOnDemand]: 479/483 looper letters, 14 selfloop transitions, 3 changer transitions 0/430 dead transitions. [2022-12-05 18:58:05,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 430 transitions, 920 flow [2022-12-05 18:58:05,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:58:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:58:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2022-12-05 18:58:05,177 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9233954451345756 [2022-12-05 18:58:05,177 INFO L175 Difference]: Start difference. First operand has 437 places, 426 transitions, 876 flow. Second operand 3 states and 1338 transitions. [2022-12-05 18:58:05,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 430 transitions, 920 flow [2022-12-05 18:58:05,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 430 transitions, 914 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 18:58:05,184 INFO L231 Difference]: Finished difference. Result has 422 places, 428 transitions, 892 flow [2022-12-05 18:58:05,184 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=892, PETRI_PLACES=422, PETRI_TRANSITIONS=428} [2022-12-05 18:58:05,185 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -17 predicate places. [2022-12-05 18:58:05,185 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 428 transitions, 892 flow [2022-12-05 18:58:05,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:05,186 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:05,186 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:05,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:58:05,187 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)] === [2022-12-05 18:58:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1687311784, now seen corresponding path program 1 times [2022-12-05 18:58:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:05,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527914994] [2022-12-05 18:58:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:58:05,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:05,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527914994] [2022-12-05 18:58:05,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527914994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:58:05,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:58:05,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:58:05,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943940156] [2022-12-05 18:58:05,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:58:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:05,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:58:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:58:05,316 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 483 [2022-12-05 18:58:05,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 428 transitions, 892 flow. Second operand has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:05,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:05,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 483 [2022-12-05 18:58:05,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:05,427 INFO L130 PetriNetUnfolder]: 32/597 cut-off events. [2022-12-05 18:58:05,427 INFO L131 PetriNetUnfolder]: For 13/25 co-relation queries the response was YES. [2022-12-05 18:58:05,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 597 events. 32/597 cut-off events. For 13/25 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1707 event pairs, 10 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 640. Up to 35 conditions per place. [2022-12-05 18:58:05,432 INFO L137 encePairwiseOnDemand]: 479/483 looper letters, 14 selfloop transitions, 3 changer transitions 0/432 dead transitions. [2022-12-05 18:58:05,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 432 transitions, 936 flow [2022-12-05 18:58:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:58:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:58:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2022-12-05 18:58:05,434 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9233954451345756 [2022-12-05 18:58:05,434 INFO L175 Difference]: Start difference. First operand has 422 places, 428 transitions, 892 flow. Second operand 3 states and 1338 transitions. [2022-12-05 18:58:05,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 432 transitions, 936 flow [2022-12-05 18:58:05,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 432 transitions, 930 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 18:58:05,440 INFO L231 Difference]: Finished difference. Result has 424 places, 430 transitions, 908 flow [2022-12-05 18:58:05,440 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=908, PETRI_PLACES=424, PETRI_TRANSITIONS=430} [2022-12-05 18:58:05,441 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -15 predicate places. [2022-12-05 18:58:05,441 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 430 transitions, 908 flow [2022-12-05 18:58:05,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:05,442 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:05,442 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:05,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:58:05,443 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)] === [2022-12-05 18:58:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash 149272968, now seen corresponding path program 1 times [2022-12-05 18:58:05,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:05,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905478542] [2022-12-05 18:58:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:05,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:58:05,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905478542] [2022-12-05 18:58:05,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905478542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:58:05,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:58:05,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:58:05,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229943293] [2022-12-05 18:58:05,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:05,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:58:05,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:58:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:58:05,921 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 483 [2022-12-05 18:58:05,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 430 transitions, 908 flow. Second operand has 8 states, 8 states have (on average 335.375) internal successors, (2683), 8 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:05,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:05,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 483 [2022-12-05 18:58:05,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:06,212 INFO L130 PetriNetUnfolder]: 47/823 cut-off events. [2022-12-05 18:58:06,212 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-05 18:58:06,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 823 events. 47/823 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2992 event pairs, 21 based on Foata normal form. 0/780 useless extension candidates. Maximal degree in co-relation 1019. Up to 132 conditions per place. [2022-12-05 18:58:06,221 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 106 selfloop transitions, 11 changer transitions 0/434 dead transitions. [2022-12-05 18:58:06,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 434 transitions, 1150 flow [2022-12-05 18:58:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 18:58:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 18:58:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3025 transitions. [2022-12-05 18:58:06,225 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.695882217621348 [2022-12-05 18:58:06,225 INFO L175 Difference]: Start difference. First operand has 424 places, 430 transitions, 908 flow. Second operand 9 states and 3025 transitions. [2022-12-05 18:58:06,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 434 transitions, 1150 flow [2022-12-05 18:58:06,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 434 transitions, 1144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 18:58:06,236 INFO L231 Difference]: Finished difference. Result has 431 places, 431 transitions, 932 flow [2022-12-05 18:58:06,236 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=932, PETRI_PLACES=431, PETRI_TRANSITIONS=431} [2022-12-05 18:58:06,237 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -8 predicate places. [2022-12-05 18:58:06,238 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 431 transitions, 932 flow [2022-12-05 18:58:06,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 335.375) internal successors, (2683), 8 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:06,239 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:06,239 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:06,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 18:58:06,240 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)] === [2022-12-05 18:58:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -152969741, now seen corresponding path program 1 times [2022-12-05 18:58:06,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:06,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487103105] [2022-12-05 18:58:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:06,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:58:06,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:06,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487103105] [2022-12-05 18:58:06,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487103105] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:58:06,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543511110] [2022-12-05 18:58:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:06,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:58:06,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:58:06,585 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) [2022-12-05 18:58:06,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 18:58:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:06,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 18:58:06,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:58:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:58:06,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:58:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:58:07,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543511110] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 18:58:07,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 18:58:07,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-05 18:58:07,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942386861] [2022-12-05 18:58:07,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:07,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 18:58:07,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:07,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 18:58:07,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-05 18:58:07,191 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 483 [2022-12-05 18:58:07,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 431 transitions, 932 flow. Second operand has 9 states, 9 states have (on average 375.0) internal successors, (3375), 9 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:07,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:07,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 483 [2022-12-05 18:58:07,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:07,424 INFO L130 PetriNetUnfolder]: 47/824 cut-off events. [2022-12-05 18:58:07,424 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-05 18:58:07,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 824 events. 47/824 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2978 event pairs, 21 based on Foata normal form. 0/781 useless extension candidates. Maximal degree in co-relation 914. Up to 103 conditions per place. [2022-12-05 18:58:07,433 INFO L137 encePairwiseOnDemand]: 465/483 looper letters, 71 selfloop transitions, 17 changer transitions 0/433 dead transitions. [2022-12-05 18:58:07,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 433 transitions, 1112 flow [2022-12-05 18:58:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 18:58:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 18:58:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4136 transitions. [2022-12-05 18:58:07,439 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7784679089026915 [2022-12-05 18:58:07,439 INFO L175 Difference]: Start difference. First operand has 431 places, 431 transitions, 932 flow. Second operand 11 states and 4136 transitions. [2022-12-05 18:58:07,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 433 transitions, 1112 flow [2022-12-05 18:58:07,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 433 transitions, 1092 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-05 18:58:07,446 INFO L231 Difference]: Finished difference. Result has 437 places, 433 transitions, 966 flow [2022-12-05 18:58:07,447 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=966, PETRI_PLACES=437, PETRI_TRANSITIONS=433} [2022-12-05 18:58:07,448 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -2 predicate places. [2022-12-05 18:58:07,448 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 433 transitions, 966 flow [2022-12-05 18:58:07,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 375.0) internal successors, (3375), 9 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:07,450 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:07,450 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:07,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 18:58:07,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:58:07,655 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)] === [2022-12-05 18:58:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:07,656 INFO L85 PathProgramCache]: Analyzing trace with hash -600432986, now seen corresponding path program 1 times [2022-12-05 18:58:07,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:07,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273503630] [2022-12-05 18:58:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:07,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 18:58:07,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:07,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273503630] [2022-12-05 18:58:07,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273503630] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:58:07,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:58:07,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:58:07,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948182224] [2022-12-05 18:58:07,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:07,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:58:07,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:58:07,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:58:07,994 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 483 [2022-12-05 18:58:07,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 433 transitions, 966 flow. Second operand has 8 states, 8 states have (on average 335.875) internal successors, (2687), 8 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:07,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:07,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 483 [2022-12-05 18:58:07,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:08,231 INFO L130 PetriNetUnfolder]: 71/995 cut-off events. [2022-12-05 18:58:08,232 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-05 18:58:08,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 995 events. 71/995 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4789 event pairs, 39 based on Foata normal form. 0/943 useless extension candidates. Maximal degree in co-relation 1254. Up to 163 conditions per place. [2022-12-05 18:58:08,240 INFO L137 encePairwiseOnDemand]: 471/483 looper letters, 108 selfloop transitions, 11 changer transitions 0/437 dead transitions. [2022-12-05 18:58:08,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 437 transitions, 1212 flow [2022-12-05 18:58:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 18:58:08,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 18:58:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3025 transitions. [2022-12-05 18:58:08,245 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.695882217621348 [2022-12-05 18:58:08,245 INFO L175 Difference]: Start difference. First operand has 437 places, 433 transitions, 966 flow. Second operand 9 states and 3025 transitions. [2022-12-05 18:58:08,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 437 transitions, 1212 flow [2022-12-05 18:58:08,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 437 transitions, 1185 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 18:58:08,251 INFO L231 Difference]: Finished difference. Result has 438 places, 434 transitions, 969 flow [2022-12-05 18:58:08,252 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=969, PETRI_PLACES=438, PETRI_TRANSITIONS=434} [2022-12-05 18:58:08,278 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, -1 predicate places. [2022-12-05 18:58:08,279 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 434 transitions, 969 flow [2022-12-05 18:58:08,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 335.875) internal successors, (2687), 8 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:08,280 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:08,280 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 18:58:08,281 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)] === [2022-12-05 18:58:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1890880042, now seen corresponding path program 1 times [2022-12-05 18:58:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:08,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903087101] [2022-12-05 18:58:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:08,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 18:58:08,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:08,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903087101] [2022-12-05 18:58:08,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903087101] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:58:08,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301292087] [2022-12-05 18:58:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:08,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:58:08,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:58:08,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:58:08,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 18:58:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:08,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 18:58:08,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:58:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 18:58:08,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:58:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 18:58:08,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301292087] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 18:58:08,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 18:58:08,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-05 18:58:08,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304244841] [2022-12-05 18:58:08,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:08,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 18:58:08,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:08,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 18:58:08,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-05 18:58:08,951 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 483 [2022-12-05 18:58:08,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 434 transitions, 969 flow. Second operand has 9 states, 9 states have (on average 375.8888888888889) internal successors, (3383), 9 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:08,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:08,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 483 [2022-12-05 18:58:08,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:09,208 INFO L130 PetriNetUnfolder]: 71/996 cut-off events. [2022-12-05 18:58:09,208 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-12-05 18:58:09,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 996 events. 71/996 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4788 event pairs, 39 based on Foata normal form. 0/943 useless extension candidates. Maximal degree in co-relation 1233. Up to 118 conditions per place. [2022-12-05 18:58:09,216 INFO L137 encePairwiseOnDemand]: 463/483 looper letters, 71 selfloop transitions, 20 changer transitions 0/436 dead transitions. [2022-12-05 18:58:09,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 436 transitions, 1155 flow [2022-12-05 18:58:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 18:58:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 18:58:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4872 transitions. [2022-12-05 18:58:09,223 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7759197324414716 [2022-12-05 18:58:09,223 INFO L175 Difference]: Start difference. First operand has 438 places, 434 transitions, 969 flow. Second operand 13 states and 4872 transitions. [2022-12-05 18:58:09,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 436 transitions, 1155 flow [2022-12-05 18:58:09,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 436 transitions, 1135 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-05 18:58:09,230 INFO L231 Difference]: Finished difference. Result has 446 places, 436 transitions, 1009 flow [2022-12-05 18:58:09,230 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1009, PETRI_PLACES=446, PETRI_TRANSITIONS=436} [2022-12-05 18:58:09,231 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, 7 predicate places. [2022-12-05 18:58:09,231 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 436 transitions, 1009 flow [2022-12-05 18:58:09,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 375.8888888888889) internal successors, (3383), 9 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:09,232 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:09,232 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:09,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 18:58:09,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-05 18:58:09,438 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)] === [2022-12-05 18:58:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2097753235, now seen corresponding path program 1 times [2022-12-05 18:58:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:09,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278375934] [2022-12-05 18:58:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 18:58:09,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:09,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278375934] [2022-12-05 18:58:09,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278375934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:58:09,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:58:09,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:58:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037400422] [2022-12-05 18:58:09,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:09,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:58:09,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:58:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:58:09,746 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 483 [2022-12-05 18:58:09,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 436 transitions, 1009 flow. Second operand has 8 states, 8 states have (on average 336.375) internal successors, (2691), 8 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:09,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:09,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 483 [2022-12-05 18:58:09,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:09,947 INFO L130 PetriNetUnfolder]: 71/978 cut-off events. [2022-12-05 18:58:09,947 INFO L131 PetriNetUnfolder]: For 49/54 co-relation queries the response was YES. [2022-12-05 18:58:09,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 978 events. 71/978 cut-off events. For 49/54 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4145 event pairs, 39 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 1154. Up to 126 conditions per place. [2022-12-05 18:58:09,955 INFO L137 encePairwiseOnDemand]: 473/483 looper letters, 112 selfloop transitions, 9 changer transitions 0/440 dead transitions. [2022-12-05 18:58:09,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 440 transitions, 1259 flow [2022-12-05 18:58:09,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 18:58:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 18:58:09,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2702 transitions. [2022-12-05 18:58:09,959 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6992753623188406 [2022-12-05 18:58:09,959 INFO L175 Difference]: Start difference. First operand has 446 places, 436 transitions, 1009 flow. Second operand 8 states and 2702 transitions. [2022-12-05 18:58:09,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 440 transitions, 1259 flow [2022-12-05 18:58:09,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 440 transitions, 1226 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-05 18:58:09,965 INFO L231 Difference]: Finished difference. Result has 444 places, 437 transitions, 1002 flow [2022-12-05 18:58:09,966 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1002, PETRI_PLACES=444, PETRI_TRANSITIONS=437} [2022-12-05 18:58:09,966 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, 5 predicate places. [2022-12-05 18:58:09,966 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 437 transitions, 1002 flow [2022-12-05 18:58:09,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 336.375) internal successors, (2691), 8 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:09,968 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:09,968 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:09,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 18:58:09,968 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)] === [2022-12-05 18:58:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1251194302, now seen corresponding path program 1 times [2022-12-05 18:58:09,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:09,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647999191] [2022-12-05 18:58:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:09,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 18:58:10,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:10,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647999191] [2022-12-05 18:58:10,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647999191] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:58:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610650288] [2022-12-05 18:58:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:10,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:58:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:58:10,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:58:10,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 18:58:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:10,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 18:58:10,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:58:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 18:58:10,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:58:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 18:58:10,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610650288] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 18:58:10,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 18:58:10,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-05 18:58:10,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985121692] [2022-12-05 18:58:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:10,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 18:58:10,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 18:58:10,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-05 18:58:10,637 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 483 [2022-12-05 18:58:10,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 437 transitions, 1002 flow. Second operand has 9 states, 9 states have (on average 376.77777777777777) internal successors, (3391), 9 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:10,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:10,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 483 [2022-12-05 18:58:10,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:10,889 INFO L130 PetriNetUnfolder]: 71/979 cut-off events. [2022-12-05 18:58:10,889 INFO L131 PetriNetUnfolder]: For 55/60 co-relation queries the response was YES. [2022-12-05 18:58:10,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 979 events. 71/979 cut-off events. For 55/60 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4138 event pairs, 39 based on Foata normal form. 0/926 useless extension candidates. Maximal degree in co-relation 1142. Up to 86 conditions per place. [2022-12-05 18:58:10,898 INFO L137 encePairwiseOnDemand]: 463/483 looper letters, 73 selfloop transitions, 21 changer transitions 0/439 dead transitions. [2022-12-05 18:58:10,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 439 transitions, 1194 flow [2022-12-05 18:58:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 18:58:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 18:58:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4504 transitions. [2022-12-05 18:58:10,904 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.777087646652864 [2022-12-05 18:58:10,905 INFO L175 Difference]: Start difference. First operand has 444 places, 437 transitions, 1002 flow. Second operand 12 states and 4504 transitions. [2022-12-05 18:58:10,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 439 transitions, 1194 flow [2022-12-05 18:58:10,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 439 transitions, 1178 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 18:58:10,911 INFO L231 Difference]: Finished difference. Result has 452 places, 439 transitions, 1047 flow [2022-12-05 18:58:10,912 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1047, PETRI_PLACES=452, PETRI_TRANSITIONS=439} [2022-12-05 18:58:10,912 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, 13 predicate places. [2022-12-05 18:58:10,912 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 439 transitions, 1047 flow [2022-12-05 18:58:10,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 376.77777777777777) internal successors, (3391), 9 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:10,914 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:10,914 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:10,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-05 18:58:11,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:58:11,122 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)] === [2022-12-05 18:58:11,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1520473869, now seen corresponding path program 1 times [2022-12-05 18:58:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672708283] [2022-12-05 18:58:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:11,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 18:58:12,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:12,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672708283] [2022-12-05 18:58:12,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672708283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:58:12,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:58:12,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-05 18:58:12,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663182118] [2022-12-05 18:58:12,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:12,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-05 18:58:12,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-05 18:58:12,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-12-05 18:58:12,385 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 483 [2022-12-05 18:58:12,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 439 transitions, 1047 flow. Second operand has 22 states, 22 states have (on average 277.1363636363636) internal successors, (6097), 22 states have internal predecessors, (6097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:12,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:12,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 483 [2022-12-05 18:58:12,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:58:39,134 INFO L130 PetriNetUnfolder]: 59959/155138 cut-off events. [2022-12-05 18:58:39,134 INFO L131 PetriNetUnfolder]: For 1151/1261 co-relation queries the response was YES. [2022-12-05 18:58:40,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247189 conditions, 155138 events. 59959/155138 cut-off events. For 1151/1261 co-relation queries the response was YES. Maximal size of possible extension queue 4375. Compared 2178591 event pairs, 6081 based on Foata normal form. 28/148146 useless extension candidates. Maximal degree in co-relation 247003. Up to 23301 conditions per place. [2022-12-05 18:58:40,653 INFO L137 encePairwiseOnDemand]: 449/483 looper letters, 1193 selfloop transitions, 160 changer transitions 58/1684 dead transitions. [2022-12-05 18:58:40,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1684 transitions, 6426 flow [2022-12-05 18:58:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-05 18:58:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2022-12-05 18:58:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 28412 transitions. [2022-12-05 18:58:40,683 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.58824016563147 [2022-12-05 18:58:40,683 INFO L175 Difference]: Start difference. First operand has 452 places, 439 transitions, 1047 flow. Second operand 100 states and 28412 transitions. [2022-12-05 18:58:40,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 1684 transitions, 6426 flow [2022-12-05 18:58:41,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 1684 transitions, 6390 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-05 18:58:41,013 INFO L231 Difference]: Finished difference. Result has 629 places, 608 transitions, 2192 flow [2022-12-05 18:58:41,013 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=2192, PETRI_PLACES=629, PETRI_TRANSITIONS=608} [2022-12-05 18:58:41,014 INFO L294 CegarLoopForPetriNet]: 439 programPoint places, 190 predicate places. [2022-12-05 18:58:41,014 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 608 transitions, 2192 flow [2022-12-05 18:58:41,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 277.1363636363636) internal successors, (6097), 22 states have internal predecessors, (6097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:41,016 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:58:41,016 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:58:41,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 18:58:41,016 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)] === [2022-12-05 18:58:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:58:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1884868601, now seen corresponding path program 2 times [2022-12-05 18:58:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:58:41,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836798735] [2022-12-05 18:58:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:58:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:58:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:58:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 18:58:43,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:58:43,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836798735] [2022-12-05 18:58:43,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836798735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:58:43,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:58:43,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-12-05 18:58:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058007199] [2022-12-05 18:58:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:58:43,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-05 18:58:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:58:43,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-05 18:58:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-12-05 18:58:43,080 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 483 [2022-12-05 18:58:43,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 608 transitions, 2192 flow. Second operand has 36 states, 36 states have (on average 237.30555555555554) internal successors, (8543), 36 states have internal predecessors, (8543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:58:43,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:58:43,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 483 [2022-12-05 18:58:43,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand