./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:42:56,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:42:56,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:42:56,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:42:56,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:42:56,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:42:56,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:42:56,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:42:56,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:42:56,555 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:42:56,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:42:56,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:42:56,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:42:56,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:42:56,556 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:42:56,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:42:56,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:42:56,557 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:42:56,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:42:56,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:42:56,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:42:56,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:42:56,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:42:56,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:42:56,558 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:42:56,558 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:42:56,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:42:56,558 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:42:56,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:42:56,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:42:56,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:42:56,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:42:56,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:42:56,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:42:56,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:42:56,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:42:56,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:42:56,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:42:56,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:42:56,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:42:56,561 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:42:56,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:42:56,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:42:56,561 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2024-06-27 16:42:56,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:42:56,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:42:56,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:42:56,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:42:56,758 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:42:56,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2024-06-27 16:42:57,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:42:57,841 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:42:57,841 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2024-06-27 16:42:57,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d806a173/f2913765132a4dc4a75a620f5cb9e9aa/FLAG05e1c7bf0 [2024-06-27 16:42:57,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d806a173/f2913765132a4dc4a75a620f5cb9e9aa [2024-06-27 16:42:57,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:42:57,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:42:57,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:42:57,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:42:57,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:42:57,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:42:57" (1/1) ... [2024-06-27 16:42:57,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e87c2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:57, skipping insertion in model container [2024-06-27 16:42:57,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:42:57" (1/1) ... [2024-06-27 16:42:57,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:42:58,090 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5465,5478] [2024-06-27 16:42:58,100 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:42:58,111 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:42:58,149 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5465,5478] [2024-06-27 16:42:58,150 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:42:58,162 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:42:58,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58 WrapperNode [2024-06-27 16:42:58,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:42:58,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:42:58,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:42:58,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:42:58,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,198 INFO L138 Inliner]: procedures = 21, calls = 95, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 252 [2024-06-27 16:42:58,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:42:58,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:42:58,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:42:58,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:42:58,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,217 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,228 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 16:42:58,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:42:58,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:42:58,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:42:58,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:42:58,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (1/1) ... [2024-06-27 16:42:58,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:42:58,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:42:58,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 16:42:58,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 16:42:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:42:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:42:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:42:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:42:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:42:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:42:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:42:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:42:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:42:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:42:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:42:58,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:42:58,310 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:42:58,381 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:42:58,383 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:42:58,610 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:42:58,611 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:42:58,775 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:42:58,776 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:42:58,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:42:58 BoogieIcfgContainer [2024-06-27 16:42:58,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:42:58,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:42:58,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:42:58,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:42:58,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:42:57" (1/3) ... [2024-06-27 16:42:58,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10acb70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:42:58, skipping insertion in model container [2024-06-27 16:42:58,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:42:58" (2/3) ... [2024-06-27 16:42:58,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10acb70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:42:58, skipping insertion in model container [2024-06-27 16:42:58,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:42:58" (3/3) ... [2024-06-27 16:42:58,785 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2024-06-27 16:42:58,790 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:42:58,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:42:58,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:42:58,798 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:42:58,843 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:42:58,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 58 transitions, 137 flow [2024-06-27 16:42:58,913 INFO L124 PetriNetUnfolderBase]: 0/55 cut-off events. [2024-06-27 16:42:58,914 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:42:58,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 0/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-27 16:42:58,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 58 transitions, 137 flow [2024-06-27 16:42:58,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 54 transitions, 126 flow [2024-06-27 16:42:58,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:42:58,935 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@13f10906, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:42:58,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:42:58,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:42:58,964 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2024-06-27 16:42:58,964 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:42:58,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:42:58,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:42:58,966 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)] === [2024-06-27 16:42:58,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:42:58,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1298372646, now seen corresponding path program 1 times [2024-06-27 16:42:58,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:42:58,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176254452] [2024-06-27 16:42:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:42:58,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:42:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:42:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:42:59,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:42:59,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176254452] [2024-06-27 16:42:59,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176254452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:42:59,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:42:59,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:42:59,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362631158] [2024-06-27 16:42:59,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:42:59,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 16:42:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:42:59,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 16:42:59,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-06-27 16:42:59,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-06-27 16:42:59,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 126 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:42:59,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:42:59,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-06-27 16:42:59,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:00,528 INFO L124 PetriNetUnfolderBase]: 4441/7447 cut-off events. [2024-06-27 16:43:00,530 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-06-27 16:43:00,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 7447 events. 4441/7447 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 50298 event pairs, 1599 based on Foata normal form. 1/7359 useless extension candidates. Maximal degree in co-relation 13435. Up to 2233 conditions per place. [2024-06-27 16:43:00,569 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 135 selfloop transitions, 15 changer transitions 18/187 dead transitions. [2024-06-27 16:43:00,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 187 transitions, 782 flow [2024-06-27 16:43:00,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:43:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:43:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 411 transitions. [2024-06-27 16:43:00,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6442006269592476 [2024-06-27 16:43:00,585 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 126 flow. Second operand 11 states and 411 transitions. [2024-06-27 16:43:00,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 187 transitions, 782 flow [2024-06-27 16:43:00,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 187 transitions, 734 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:43:00,599 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 206 flow [2024-06-27 16:43:00,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=206, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-06-27 16:43:00,603 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2024-06-27 16:43:00,603 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 206 flow [2024-06-27 16:43:00,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:00,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:00,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:00,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:43:00,604 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)] === [2024-06-27 16:43:00,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:00,605 INFO L85 PathProgramCache]: Analyzing trace with hash -615578906, now seen corresponding path program 2 times [2024-06-27 16:43:00,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:00,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275421216] [2024-06-27 16:43:00,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:00,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:01,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275421216] [2024-06-27 16:43:01,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275421216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:01,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:01,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:43:01,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172117724] [2024-06-27 16:43:01,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:01,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:43:01,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:43:01,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:43:01,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-06-27 16:43:01,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:01,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:01,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-06-27 16:43:01,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:01,851 INFO L124 PetriNetUnfolderBase]: 6575/11308 cut-off events. [2024-06-27 16:43:01,851 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-27 16:43:01,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22510 conditions, 11308 events. 6575/11308 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 81795 event pairs, 2126 based on Foata normal form. 106/11138 useless extension candidates. Maximal degree in co-relation 22483. Up to 6975 conditions per place. [2024-06-27 16:43:01,896 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 111 selfloop transitions, 22 changer transitions 0/168 dead transitions. [2024-06-27 16:43:01,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 168 transitions, 674 flow [2024-06-27 16:43:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 16:43:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 16:43:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 310 transitions. [2024-06-27 16:43:01,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6681034482758621 [2024-06-27 16:43:01,898 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 206 flow. Second operand 8 states and 310 transitions. [2024-06-27 16:43:01,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 168 transitions, 674 flow [2024-06-27 16:43:01,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 168 transitions, 672 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 16:43:01,903 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 346 flow [2024-06-27 16:43:01,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=81, PETRI_TRANSITIONS=92} [2024-06-27 16:43:01,904 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2024-06-27 16:43:01,904 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 346 flow [2024-06-27 16:43:01,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:01,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:01,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:01,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:43:01,905 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)] === [2024-06-27 16:43:01,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:01,906 INFO L85 PathProgramCache]: Analyzing trace with hash -680923206, now seen corresponding path program 3 times [2024-06-27 16:43:01,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:01,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903735231] [2024-06-27 16:43:01,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:01,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:01,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903735231] [2024-06-27 16:43:01,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903735231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:01,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:01,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:43:01,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158291615] [2024-06-27 16:43:01,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:01,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:43:01,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:43:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:43:01,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2024-06-27 16:43:01,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 92 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:01,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:01,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2024-06-27 16:43:01,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:02,543 INFO L124 PetriNetUnfolderBase]: 4304/8431 cut-off events. [2024-06-27 16:43:02,544 INFO L125 PetriNetUnfolderBase]: For 1584/1615 co-relation queries the response was YES. [2024-06-27 16:43:02,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18384 conditions, 8431 events. 4304/8431 cut-off events. For 1584/1615 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 66855 event pairs, 2670 based on Foata normal form. 164/8258 useless extension candidates. Maximal degree in co-relation 14938. Up to 4850 conditions per place. [2024-06-27 16:43:02,586 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 59 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-06-27 16:43:02,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 525 flow [2024-06-27 16:43:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:43:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:43:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-06-27 16:43:02,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183908045977011 [2024-06-27 16:43:02,587 INFO L175 Difference]: Start difference. First operand has 81 places, 92 transitions, 346 flow. Second operand 3 states and 125 transitions. [2024-06-27 16:43:02,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 525 flow [2024-06-27 16:43:02,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 525 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:43:02,613 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 356 flow [2024-06-27 16:43:02,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2024-06-27 16:43:02,614 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2024-06-27 16:43:02,614 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 356 flow [2024-06-27 16:43:02,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:02,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:02,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:02,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:43:02,615 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)] === [2024-06-27 16:43:02,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:02,616 INFO L85 PathProgramCache]: Analyzing trace with hash -907942612, now seen corresponding path program 4 times [2024-06-27 16:43:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:02,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055995757] [2024-06-27 16:43:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:02,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:02,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055995757] [2024-06-27 16:43:02,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055995757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:02,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:02,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:43:02,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443306604] [2024-06-27 16:43:02,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:02,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:43:02,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:02,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:43:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:43:02,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2024-06-27 16:43:02,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:02,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:02,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2024-06-27 16:43:02,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:03,213 INFO L124 PetriNetUnfolderBase]: 4285/8441 cut-off events. [2024-06-27 16:43:03,213 INFO L125 PetriNetUnfolderBase]: For 1947/2014 co-relation queries the response was YES. [2024-06-27 16:43:03,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19156 conditions, 8441 events. 4285/8441 cut-off events. For 1947/2014 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 67682 event pairs, 2892 based on Foata normal form. 149/8233 useless extension candidates. Maximal degree in co-relation 15431. Up to 5099 conditions per place. [2024-06-27 16:43:03,269 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 60 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-06-27 16:43:03,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 111 transitions, 550 flow [2024-06-27 16:43:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:43:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:43:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-06-27 16:43:03,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2024-06-27 16:43:03,270 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 356 flow. Second operand 3 states and 124 transitions. [2024-06-27 16:43:03,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 111 transitions, 550 flow [2024-06-27 16:43:03,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 111 transitions, 546 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:43:03,291 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 362 flow [2024-06-27 16:43:03,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2024-06-27 16:43:03,292 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2024-06-27 16:43:03,292 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 362 flow [2024-06-27 16:43:03,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:03,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:03,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:03,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:43:03,293 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)] === [2024-06-27 16:43:03,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash -614667674, now seen corresponding path program 5 times [2024-06-27 16:43:03,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:03,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024782917] [2024-06-27 16:43:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:03,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024782917] [2024-06-27 16:43:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024782917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:03,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:43:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456931802] [2024-06-27 16:43:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:03,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 16:43:03,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 16:43:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-06-27 16:43:03,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-06-27 16:43:03,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 362 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:03,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:03,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-06-27 16:43:03,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:04,671 INFO L124 PetriNetUnfolderBase]: 8175/14072 cut-off events. [2024-06-27 16:43:04,672 INFO L125 PetriNetUnfolderBase]: For 4437/4538 co-relation queries the response was YES. [2024-06-27 16:43:04,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34268 conditions, 14072 events. 8175/14072 cut-off events. For 4437/4538 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 106155 event pairs, 2642 based on Foata normal form. 37/13818 useless extension candidates. Maximal degree in co-relation 20349. Up to 3732 conditions per place. [2024-06-27 16:43:04,733 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 193 selfloop transitions, 26 changer transitions 18/266 dead transitions. [2024-06-27 16:43:04,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 266 transitions, 1418 flow [2024-06-27 16:43:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:43:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:43:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 425 transitions. [2024-06-27 16:43:04,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6661442006269592 [2024-06-27 16:43:04,735 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 362 flow. Second operand 11 states and 425 transitions. [2024-06-27 16:43:04,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 266 transitions, 1418 flow [2024-06-27 16:43:04,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 266 transitions, 1414 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:43:04,753 INFO L231 Difference]: Finished difference. Result has 99 places, 113 transitions, 565 flow [2024-06-27 16:43:04,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=565, PETRI_PLACES=99, PETRI_TRANSITIONS=113} [2024-06-27 16:43:04,754 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 35 predicate places. [2024-06-27 16:43:04,754 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 113 transitions, 565 flow [2024-06-27 16:43:04,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:04,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:04,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:04,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:43:04,755 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)] === [2024-06-27 16:43:04,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2003178450, now seen corresponding path program 6 times [2024-06-27 16:43:04,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:04,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811860970] [2024-06-27 16:43:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:04,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:05,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:05,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811860970] [2024-06-27 16:43:05,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811860970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:05,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:05,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 16:43:05,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320131253] [2024-06-27 16:43:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 16:43:05,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 16:43:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 16:43:05,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-27 16:43:05,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 113 transitions, 565 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:05,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:05,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-27 16:43:05,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:07,549 INFO L124 PetriNetUnfolderBase]: 16715/28293 cut-off events. [2024-06-27 16:43:07,549 INFO L125 PetriNetUnfolderBase]: For 10610/10787 co-relation queries the response was YES. [2024-06-27 16:43:07,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70215 conditions, 28293 events. 16715/28293 cut-off events. For 10610/10787 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 221987 event pairs, 4630 based on Foata normal form. 246/27807 useless extension candidates. Maximal degree in co-relation 70134. Up to 15675 conditions per place. [2024-06-27 16:43:07,710 INFO L140 encePairwiseOnDemand]: 41/58 looper letters, 207 selfloop transitions, 85 changer transitions 8/353 dead transitions. [2024-06-27 16:43:07,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 353 transitions, 1917 flow [2024-06-27 16:43:07,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-27 16:43:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-27 16:43:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 617 transitions. [2024-06-27 16:43:07,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909961685823755 [2024-06-27 16:43:07,713 INFO L175 Difference]: Start difference. First operand has 99 places, 113 transitions, 565 flow. Second operand 18 states and 617 transitions. [2024-06-27 16:43:07,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 353 transitions, 1917 flow [2024-06-27 16:43:07,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 353 transitions, 1909 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 16:43:07,954 INFO L231 Difference]: Finished difference. Result has 127 places, 183 transitions, 1173 flow [2024-06-27 16:43:07,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1173, PETRI_PLACES=127, PETRI_TRANSITIONS=183} [2024-06-27 16:43:07,957 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 63 predicate places. [2024-06-27 16:43:07,958 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 183 transitions, 1173 flow [2024-06-27 16:43:07,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:07,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:07,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:07,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:43:07,959 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)] === [2024-06-27 16:43:07,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1139372196, now seen corresponding path program 7 times [2024-06-27 16:43:07,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:07,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944875634] [2024-06-27 16:43:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:08,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:08,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944875634] [2024-06-27 16:43:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944875634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:08,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:08,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:43:08,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131848155] [2024-06-27 16:43:08,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:08,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 16:43:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:08,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 16:43:08,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-06-27 16:43:08,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 58 [2024-06-27 16:43:08,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 183 transitions, 1173 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:08,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:08,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 58 [2024-06-27 16:43:08,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:10,919 INFO L124 PetriNetUnfolderBase]: 17700/29448 cut-off events. [2024-06-27 16:43:10,920 INFO L125 PetriNetUnfolderBase]: For 50680/51457 co-relation queries the response was YES. [2024-06-27 16:43:11,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94775 conditions, 29448 events. 17700/29448 cut-off events. For 50680/51457 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 234479 event pairs, 5989 based on Foata normal form. 183/28309 useless extension candidates. Maximal degree in co-relation 89770. Up to 7435 conditions per place. [2024-06-27 16:43:11,202 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 271 selfloop transitions, 29 changer transitions 18/386 dead transitions. [2024-06-27 16:43:11,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 386 transitions, 2896 flow [2024-06-27 16:43:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:43:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:43:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 421 transitions. [2024-06-27 16:43:11,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6598746081504702 [2024-06-27 16:43:11,204 INFO L175 Difference]: Start difference. First operand has 127 places, 183 transitions, 1173 flow. Second operand 11 states and 421 transitions. [2024-06-27 16:43:11,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 386 transitions, 2896 flow [2024-06-27 16:43:11,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 386 transitions, 2856 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-06-27 16:43:11,636 INFO L231 Difference]: Finished difference. Result has 141 places, 188 transitions, 1283 flow [2024-06-27 16:43:11,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1283, PETRI_PLACES=141, PETRI_TRANSITIONS=188} [2024-06-27 16:43:11,636 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 77 predicate places. [2024-06-27 16:43:11,636 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 188 transitions, 1283 flow [2024-06-27 16:43:11,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:11,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:11,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:11,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:43:11,637 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)] === [2024-06-27 16:43:11,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash -204548754, now seen corresponding path program 8 times [2024-06-27 16:43:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:11,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412981867] [2024-06-27 16:43:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:12,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:12,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412981867] [2024-06-27 16:43:12,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412981867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:12,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:12,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 16:43:12,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762109739] [2024-06-27 16:43:12,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:12,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 16:43:12,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 16:43:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 16:43:12,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-27 16:43:12,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 188 transitions, 1283 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:12,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:12,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-27 16:43:12,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:15,253 INFO L124 PetriNetUnfolderBase]: 18117/30919 cut-off events. [2024-06-27 16:43:15,254 INFO L125 PetriNetUnfolderBase]: For 58169/59528 co-relation queries the response was YES. [2024-06-27 16:43:15,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101689 conditions, 30919 events. 18117/30919 cut-off events. For 58169/59528 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 248269 event pairs, 5836 based on Foata normal form. 488/30594 useless extension candidates. Maximal degree in co-relation 101581. Up to 21024 conditions per place. [2024-06-27 16:43:15,469 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 265 selfloop transitions, 61 changer transitions 3/387 dead transitions. [2024-06-27 16:43:15,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 387 transitions, 2905 flow [2024-06-27 16:43:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 16:43:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 16:43:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 507 transitions. [2024-06-27 16:43:15,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5827586206896552 [2024-06-27 16:43:15,471 INFO L175 Difference]: Start difference. First operand has 141 places, 188 transitions, 1283 flow. Second operand 15 states and 507 transitions. [2024-06-27 16:43:15,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 387 transitions, 2905 flow [2024-06-27 16:43:15,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 387 transitions, 2864 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 16:43:15,795 INFO L231 Difference]: Finished difference. Result has 159 places, 242 transitions, 1868 flow [2024-06-27 16:43:15,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1868, PETRI_PLACES=159, PETRI_TRANSITIONS=242} [2024-06-27 16:43:15,796 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 95 predicate places. [2024-06-27 16:43:15,796 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 242 transitions, 1868 flow [2024-06-27 16:43:15,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:15,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:15,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:15,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:43:15,797 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)] === [2024-06-27 16:43:15,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash 263779104, now seen corresponding path program 9 times [2024-06-27 16:43:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:15,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894804347] [2024-06-27 16:43:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:15,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:16,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:16,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894804347] [2024-06-27 16:43:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894804347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:43:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077130878] [2024-06-27 16:43:16,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:16,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:43:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:43:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:43:16,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-06-27 16:43:16,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 242 transitions, 1868 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:16,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:16,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-06-27 16:43:16,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:20,310 INFO L124 PetriNetUnfolderBase]: 22592/39079 cut-off events. [2024-06-27 16:43:20,310 INFO L125 PetriNetUnfolderBase]: For 109208/111168 co-relation queries the response was YES. [2024-06-27 16:43:20,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139668 conditions, 39079 events. 22592/39079 cut-off events. For 109208/111168 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 330242 event pairs, 4904 based on Foata normal form. 622/38748 useless extension candidates. Maximal degree in co-relation 134984. Up to 10834 conditions per place. [2024-06-27 16:43:20,697 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 236 selfloop transitions, 148 changer transitions 0/444 dead transitions. [2024-06-27 16:43:20,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 444 transitions, 4042 flow [2024-06-27 16:43:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 16:43:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 16:43:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 349 transitions. [2024-06-27 16:43:20,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6685823754789272 [2024-06-27 16:43:20,699 INFO L175 Difference]: Start difference. First operand has 159 places, 242 transitions, 1868 flow. Second operand 9 states and 349 transitions. [2024-06-27 16:43:20,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 444 transitions, 4042 flow [2024-06-27 16:43:21,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 444 transitions, 3924 flow, removed 59 selfloop flow, removed 0 redundant places. [2024-06-27 16:43:21,646 INFO L231 Difference]: Finished difference. Result has 172 places, 309 transitions, 2957 flow [2024-06-27 16:43:21,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2957, PETRI_PLACES=172, PETRI_TRANSITIONS=309} [2024-06-27 16:43:21,647 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 108 predicate places. [2024-06-27 16:43:21,647 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 309 transitions, 2957 flow [2024-06-27 16:43:21,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:21,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:21,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:21,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 16:43:21,648 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)] === [2024-06-27 16:43:21,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1713508350, now seen corresponding path program 10 times [2024-06-27 16:43:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:21,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826868270] [2024-06-27 16:43:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:21,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:21,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826868270] [2024-06-27 16:43:21,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826868270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:21,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:21,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:43:21,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169203841] [2024-06-27 16:43:21,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:21,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:43:21,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:21,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:43:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:43:21,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2024-06-27 16:43:21,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 309 transitions, 2957 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:21,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:21,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2024-06-27 16:43:21,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:24,979 INFO L124 PetriNetUnfolderBase]: 13973/27852 cut-off events. [2024-06-27 16:43:24,979 INFO L125 PetriNetUnfolderBase]: For 105083/106083 co-relation queries the response was YES. [2024-06-27 16:43:25,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103163 conditions, 27852 events. 13973/27852 cut-off events. For 105083/106083 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 263970 event pairs, 9145 based on Foata normal form. 513/26791 useless extension candidates. Maximal degree in co-relation 100196. Up to 17188 conditions per place. [2024-06-27 16:43:25,324 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 159 selfloop transitions, 2 changer transitions 0/355 dead transitions. [2024-06-27 16:43:25,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 355 transitions, 3687 flow [2024-06-27 16:43:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:43:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:43:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-06-27 16:43:25,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2024-06-27 16:43:25,325 INFO L175 Difference]: Start difference. First operand has 172 places, 309 transitions, 2957 flow. Second operand 3 states and 126 transitions. [2024-06-27 16:43:25,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 355 transitions, 3687 flow [2024-06-27 16:43:26,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 355 transitions, 3678 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 16:43:26,233 INFO L231 Difference]: Finished difference. Result has 174 places, 303 transitions, 2896 flow [2024-06-27 16:43:26,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2896, PETRI_PLACES=174, PETRI_TRANSITIONS=303} [2024-06-27 16:43:26,234 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 110 predicate places. [2024-06-27 16:43:26,234 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 303 transitions, 2896 flow [2024-06-27 16:43:26,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:26,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:26,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:26,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 16:43:26,234 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)] === [2024-06-27 16:43:26,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash 323687162, now seen corresponding path program 11 times [2024-06-27 16:43:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:26,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510889746] [2024-06-27 16:43:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:26,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:26,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510889746] [2024-06-27 16:43:26,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510889746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:26,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:26,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 16:43:26,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176952506] [2024-06-27 16:43:26,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:26,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 16:43:26,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:26,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 16:43:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 16:43:26,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-06-27 16:43:26,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 303 transitions, 2896 flow. Second operand has 10 states, 10 states have (on average 23.7) internal successors, (237), 10 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:26,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:26,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-06-27 16:43:26,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:32,020 INFO L124 PetriNetUnfolderBase]: 24153/42645 cut-off events. [2024-06-27 16:43:32,021 INFO L125 PetriNetUnfolderBase]: For 177018/179745 co-relation queries the response was YES. [2024-06-27 16:43:32,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166883 conditions, 42645 events. 24153/42645 cut-off events. For 177018/179745 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 368874 event pairs, 9584 based on Foata normal form. 342/41938 useless extension candidates. Maximal degree in co-relation 162649. Up to 30881 conditions per place. [2024-06-27 16:43:32,421 INFO L140 encePairwiseOnDemand]: 44/58 looper letters, 291 selfloop transitions, 53 changer transitions 1/413 dead transitions. [2024-06-27 16:43:32,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 413 transitions, 4304 flow [2024-06-27 16:43:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 16:43:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 16:43:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 300 transitions. [2024-06-27 16:43:32,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.646551724137931 [2024-06-27 16:43:32,422 INFO L175 Difference]: Start difference. First operand has 174 places, 303 transitions, 2896 flow. Second operand 8 states and 300 transitions. [2024-06-27 16:43:32,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 413 transitions, 4304 flow [2024-06-27 16:43:33,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 413 transitions, 4290 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 16:43:33,508 INFO L231 Difference]: Finished difference. Result has 185 places, 334 transitions, 3393 flow [2024-06-27 16:43:33,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=2890, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3393, PETRI_PLACES=185, PETRI_TRANSITIONS=334} [2024-06-27 16:43:33,508 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 121 predicate places. [2024-06-27 16:43:33,508 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 334 transitions, 3393 flow [2024-06-27 16:43:33,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.7) internal successors, (237), 10 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:33,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:33,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:33,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 16:43:33,509 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:43:33,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:33,509 INFO L85 PathProgramCache]: Analyzing trace with hash 42978778, now seen corresponding path program 12 times [2024-06-27 16:43:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:33,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75507229] [2024-06-27 16:43:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:33,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:33,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:33,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75507229] [2024-06-27 16:43:33,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75507229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:33,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:33,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:43:33,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939012542] [2024-06-27 16:43:33,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:33,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 16:43:33,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:33,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 16:43:33,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 16:43:33,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-06-27 16:43:33,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 334 transitions, 3393 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:33,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:33,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-06-27 16:43:33,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:43:39,764 INFO L124 PetriNetUnfolderBase]: 24958/43844 cut-off events. [2024-06-27 16:43:39,764 INFO L125 PetriNetUnfolderBase]: For 223909/226810 co-relation queries the response was YES. [2024-06-27 16:43:40,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185289 conditions, 43844 events. 24958/43844 cut-off events. For 223909/226810 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 378761 event pairs, 9992 based on Foata normal form. 255/43102 useless extension candidates. Maximal degree in co-relation 180939. Up to 33849 conditions per place. [2024-06-27 16:43:40,315 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 341 selfloop transitions, 53 changer transitions 5/467 dead transitions. [2024-06-27 16:43:40,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 467 transitions, 5347 flow [2024-06-27 16:43:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:43:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:43:40,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 380 transitions. [2024-06-27 16:43:40,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5956112852664577 [2024-06-27 16:43:40,322 INFO L175 Difference]: Start difference. First operand has 185 places, 334 transitions, 3393 flow. Second operand 11 states and 380 transitions. [2024-06-27 16:43:40,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 467 transitions, 5347 flow [2024-06-27 16:43:41,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 467 transitions, 5273 flow, removed 37 selfloop flow, removed 0 redundant places. [2024-06-27 16:43:41,830 INFO L231 Difference]: Finished difference. Result has 204 places, 368 transitions, 4009 flow [2024-06-27 16:43:41,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4009, PETRI_PLACES=204, PETRI_TRANSITIONS=368} [2024-06-27 16:43:41,831 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 140 predicate places. [2024-06-27 16:43:41,832 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 368 transitions, 4009 flow [2024-06-27 16:43:41,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:41,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:43:41,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:43:41,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 16:43:41,833 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:43:41,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:43:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1496948522, now seen corresponding path program 13 times [2024-06-27 16:43:41,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:43:41,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987123029] [2024-06-27 16:43:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:43:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:43:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:43:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:43:42,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:43:42,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987123029] [2024-06-27 16:43:42,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987123029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:43:42,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:43:42,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:43:42,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050424658] [2024-06-27 16:43:42,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:43:42,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 16:43:42,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:43:42,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 16:43:42,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 16:43:42,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-27 16:43:42,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 368 transitions, 4009 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:43:42,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:43:42,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-27 16:43:42,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand