./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/test-easy6.wvr.yml/witness.yml --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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/test-easy6.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:43:22,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:43:22,702 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:43:22,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:43:22,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:43:22,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:43:22,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:43:22,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:43:22,743 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:43:22,743 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:43:22,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:43:22,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:43:22,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:43:22,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:43:22,745 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:43:22,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:43:22,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:43:22,749 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:43:22,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:43:22,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:43:22,750 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:43:22,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:43:22,751 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:43:22,751 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:43:22,751 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:43:22,751 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:43:22,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:43:22,752 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:43:22,752 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:43:22,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:43:22,752 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:43:22,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:43:22,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:43:22,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:43:22,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:43:22,754 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:43:22,754 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:43:22,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:43:22,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:43:22,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:43:22,755 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:43:22,755 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:43:22,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:43:22,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:43:22,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:43:23,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:43:23,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:43:23,004 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:43:23,005 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:43:23,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/test-easy6.wvr.yml/witness.yml [2024-06-27 19:43:23,096 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:43:23,097 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:43:23,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-06-27 19:43:24,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:43:24,258 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:43:24,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-06-27 19:43:24,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23dfc4585/e70a5f3393be4de4863953bb86030916/FLAG62e7c7ef5 [2024-06-27 19:43:24,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23dfc4585/e70a5f3393be4de4863953bb86030916 [2024-06-27 19:43:24,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:43:24,280 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:43:24,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:43:24,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:43:24,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:43:24,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:43:23" (1/2) ... [2024-06-27 19:43:24,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3faed075 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:24, skipping insertion in model container [2024-06-27 19:43:24,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:43:23" (1/2) ... [2024-06-27 19:43:24,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d57a2d3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:24, skipping insertion in model container [2024-06-27 19:43:24,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:43:24" (2/2) ... [2024-06-27 19:43:24,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3faed075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24, skipping insertion in model container [2024-06-27 19:43:24,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:43:24" (2/2) ... [2024-06-27 19:43:24,292 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:43:24,313 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:43:24,314 INFO L97 edCorrectnessWitness]: Location invariant before [L112-L112] ((((((! multithreaded || 0 <= tmp2) && (! multithreaded || 0 <= n1)) && (! multithreaded || 0 <= i2)) && (! multithreaded || 0 <= tmp1)) && (! multithreaded || 0 <= i)) && (! multithreaded || 0 <= i1)) && (! multithreaded || 0 <= n2) [2024-06-27 19:43:24,314 INFO L97 edCorrectnessWitness]: Location invariant before [L111-L111] ((((((! multithreaded || 0 <= tmp2) && (! multithreaded || 0 <= n1)) && (! multithreaded || 0 <= i2)) && (! multithreaded || 0 <= tmp1)) && (! multithreaded || 0 <= i)) && (! multithreaded || 0 <= i1)) && (! multithreaded || 0 <= n2) [2024-06-27 19:43:24,314 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:43:24,314 INFO L106 edCorrectnessWitness]: ghost_update [L110-L110] multithreaded = 1; [2024-06-27 19:43:24,333 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:43:24,503 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:43:24,512 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:43:24,578 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:43:24,591 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:43:24,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24 WrapperNode [2024-06-27 19:43:24,592 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:43:24,593 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:43:24,593 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:43:24,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:43:24,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,635 INFO L138 Inliner]: procedures = 20, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2024-06-27 19:43:24,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:43:24,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:43:24,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:43:24,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:43:24,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,672 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 19:43:24,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,682 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:43:24,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:43:24,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:43:24,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:43:24,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (1/1) ... [2024-06-27 19:43:24,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:43:24,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:43:24,719 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 19:43:24,739 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 19:43:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:43:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 19:43:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 19:43:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 19:43:24,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 19:43:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:43:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:43:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:43:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:43:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:43:24,755 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 19:43:24,844 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:43:24,846 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:43:25,042 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:43:25,042 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:43:25,146 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:43:25,147 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:43:25,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:43:25 BoogieIcfgContainer [2024-06-27 19:43:25,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:43:25,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:43:25,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:43:25,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:43:25,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:43:23" (1/4) ... [2024-06-27 19:43:25,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4226cc3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:43:25, skipping insertion in model container [2024-06-27 19:43:25,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:43:24" (2/4) ... [2024-06-27 19:43:25,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4226cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:43:25, skipping insertion in model container [2024-06-27 19:43:25,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:24" (3/4) ... [2024-06-27 19:43:25,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4226cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:43:25, skipping insertion in model container [2024-06-27 19:43:25,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:43:25" (4/4) ... [2024-06-27 19:43:25,153 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2024-06-27 19:43:25,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:43:25,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:43:25,166 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:43:25,201 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 19:43:25,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 37 transitions, 88 flow [2024-06-27 19:43:25,262 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2024-06-27 19:43:25,266 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 19:43:25,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 0/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-27 19:43:25,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 37 transitions, 88 flow [2024-06-27 19:43:25,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 68 flow [2024-06-27 19:43:25,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:43:25,282 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@2a5c5ef5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:43:25,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:43:25,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:43:25,287 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:43:25,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:43:25,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:25,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:43:25,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:25,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:25,292 INFO L85 PathProgramCache]: Analyzing trace with hash 249430839, now seen corresponding path program 1 times [2024-06-27 19:43:25,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:25,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700524909] [2024-06-27 19:43:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:25,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:25,653 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 19:43:25,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:25,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700524909] [2024-06-27 19:43:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700524909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:25,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:43:25,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528456802] [2024-06-27 19:43:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:25,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:43:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:25,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:43:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:43:25,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 19:43:25,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 19:43:25,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:25,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 19:43:25,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:25,825 INFO L124 PetriNetUnfolderBase]: 157/370 cut-off events. [2024-06-27 19:43:25,825 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 19:43:25,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 370 events. 157/370 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1745 event pairs, 65 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 666. Up to 276 conditions per place. [2024-06-27 19:43:25,831 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 23 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-06-27 19:43:25,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 139 flow [2024-06-27 19:43:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:43:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:43:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-27 19:43:25,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2024-06-27 19:43:25,843 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 68 flow. Second operand 3 states and 76 transitions. [2024-06-27 19:43:25,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 139 flow [2024-06-27 19:43:25,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:43:25,846 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 87 flow [2024-06-27 19:43:25,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-06-27 19:43:25,849 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-06-27 19:43:25,850 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 87 flow [2024-06-27 19:43:25,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 19:43:25,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:25,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:25,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:43:25,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:25,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:25,851 INFO L85 PathProgramCache]: Analyzing trace with hash 514390033, now seen corresponding path program 1 times [2024-06-27 19:43:25,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:25,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393086979] [2024-06-27 19:43:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:25,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:26,057 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 19:43:26,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393086979] [2024-06-27 19:43:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393086979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:26,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:26,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:43:26,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560883245] [2024-06-27 19:43:26,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:26,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:43:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:26,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:43:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:43:26,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 19:43:26,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 19:43:26,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:26,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 19:43:26,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:26,193 INFO L124 PetriNetUnfolderBase]: 150/356 cut-off events. [2024-06-27 19:43:26,193 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-06-27 19:43:26,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 356 events. 150/356 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1674 event pairs, 64 based on Foata normal form. 4/343 useless extension candidates. Maximal degree in co-relation 720. Up to 246 conditions per place. [2024-06-27 19:43:26,196 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 24 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-27 19:43:26,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 163 flow [2024-06-27 19:43:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:43:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:43:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-27 19:43:26,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-06-27 19:43:26,197 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 87 flow. Second operand 3 states and 77 transitions. [2024-06-27 19:43:26,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 163 flow [2024-06-27 19:43:26,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:26,199 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 110 flow [2024-06-27 19:43:26,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-06-27 19:43:26,199 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-06-27 19:43:26,199 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 110 flow [2024-06-27 19:43:26,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 19:43:26,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:26,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:26,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:43:26,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:26,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1233316041, now seen corresponding path program 1 times [2024-06-27 19:43:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:26,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514107445] [2024-06-27 19:43:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:26,338 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 19:43:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514107445] [2024-06-27 19:43:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514107445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:26,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:26,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:43:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689815570] [2024-06-27 19:43:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:26,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:43:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:26,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:43:26,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:43:26,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 19:43:26,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 19:43:26,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:26,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 19:43:26,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:26,511 INFO L124 PetriNetUnfolderBase]: 227/487 cut-off events. [2024-06-27 19:43:26,512 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-27 19:43:26,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 487 events. 227/487 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2259 event pairs, 87 based on Foata normal form. 15/491 useless extension candidates. Maximal degree in co-relation 1089. Up to 326 conditions per place. [2024-06-27 19:43:26,518 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 37 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-06-27 19:43:26,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 243 flow [2024-06-27 19:43:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:43:26,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:43:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-27 19:43:26,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-27 19:43:26,523 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 110 flow. Second operand 4 states and 96 transitions. [2024-06-27 19:43:26,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 243 flow [2024-06-27 19:43:26,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:26,527 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 148 flow [2024-06-27 19:43:26,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-06-27 19:43:26,528 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2024-06-27 19:43:26,528 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 148 flow [2024-06-27 19:43:26,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 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 19:43:26,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:26,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:26,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:43:26,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:26,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:26,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2025472437, now seen corresponding path program 1 times [2024-06-27 19:43:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039784077] [2024-06-27 19:43:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:26,727 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 19:43:26,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:26,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039784077] [2024-06-27 19:43:26,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039784077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:26,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:26,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:43:26,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477156376] [2024-06-27 19:43:26,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:26,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:43:26,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:26,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:43:26,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:43:26,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 19:43:26,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 19:43:26,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:26,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 19:43:26,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:26,848 INFO L124 PetriNetUnfolderBase]: 291/598 cut-off events. [2024-06-27 19:43:26,850 INFO L125 PetriNetUnfolderBase]: For 488/491 co-relation queries the response was YES. [2024-06-27 19:43:26,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 598 events. 291/598 cut-off events. For 488/491 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2873 event pairs, 90 based on Foata normal form. 12/593 useless extension candidates. Maximal degree in co-relation 1512. Up to 327 conditions per place. [2024-06-27 19:43:26,853 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 46 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2024-06-27 19:43:26,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 338 flow [2024-06-27 19:43:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:43:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:43:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 19:43:26,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2024-06-27 19:43:26,856 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 148 flow. Second operand 5 states and 117 transitions. [2024-06-27 19:43:26,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 338 flow [2024-06-27 19:43:26,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 330 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:26,863 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 199 flow [2024-06-27 19:43:26,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-27 19:43:26,864 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2024-06-27 19:43:26,864 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 199 flow [2024-06-27 19:43:26,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 19:43:26,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:26,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:26,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:43:26,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:26,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:26,866 INFO L85 PathProgramCache]: Analyzing trace with hash 933798145, now seen corresponding path program 1 times [2024-06-27 19:43:26,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:26,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976017936] [2024-06-27 19:43:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:26,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:27,051 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 19:43:27,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:27,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976017936] [2024-06-27 19:43:27,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976017936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:27,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:27,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:27,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373968185] [2024-06-27 19:43:27,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:27,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:27,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:27,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:27,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:27,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 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 19:43:27,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:27,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:27,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:27,245 INFO L124 PetriNetUnfolderBase]: 282/596 cut-off events. [2024-06-27 19:43:27,246 INFO L125 PetriNetUnfolderBase]: For 824/830 co-relation queries the response was YES. [2024-06-27 19:43:27,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 596 events. 282/596 cut-off events. For 824/830 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2878 event pairs, 80 based on Foata normal form. 16/602 useless extension candidates. Maximal degree in co-relation 1590. Up to 380 conditions per place. [2024-06-27 19:43:27,250 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 44 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2024-06-27 19:43:27,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 370 flow [2024-06-27 19:43:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:43:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:43:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-27 19:43:27,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459459459459459 [2024-06-27 19:43:27,253 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 199 flow. Second operand 5 states and 101 transitions. [2024-06-27 19:43:27,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 370 flow [2024-06-27 19:43:27,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 360 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:27,257 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 252 flow [2024-06-27 19:43:27,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 19:43:27,258 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2024-06-27 19:43:27,258 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 252 flow [2024-06-27 19:43:27,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 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 19:43:27,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:27,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:27,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:43:27,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:27,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash 858858740, now seen corresponding path program 1 times [2024-06-27 19:43:27,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:27,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372735060] [2024-06-27 19:43:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:27,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:27,396 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 19:43:27,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:27,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372735060] [2024-06-27 19:43:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372735060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:27,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:27,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882404605] [2024-06-27 19:43:27,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:27,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:27,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 19:43:27,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 19:43:27,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:27,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 19:43:27,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:27,543 INFO L124 PetriNetUnfolderBase]: 323/648 cut-off events. [2024-06-27 19:43:27,543 INFO L125 PetriNetUnfolderBase]: For 1325/1334 co-relation queries the response was YES. [2024-06-27 19:43:27,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1910 conditions, 648 events. 323/648 cut-off events. For 1325/1334 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3070 event pairs, 115 based on Foata normal form. 12/645 useless extension candidates. Maximal degree in co-relation 1886. Up to 475 conditions per place. [2024-06-27 19:43:27,546 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 48 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2024-06-27 19:43:27,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 418 flow [2024-06-27 19:43:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:43:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:43:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-27 19:43:27,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-06-27 19:43:27,548 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 252 flow. Second operand 5 states and 105 transitions. [2024-06-27 19:43:27,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 418 flow [2024-06-27 19:43:27,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 396 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 19:43:27,551 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 282 flow [2024-06-27 19:43:27,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 19:43:27,552 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2024-06-27 19:43:27,552 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 282 flow [2024-06-27 19:43:27,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 19:43:27,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:27,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:27,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:43:27,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:27,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash -216928050, now seen corresponding path program 1 times [2024-06-27 19:43:27,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:27,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032458394] [2024-06-27 19:43:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:27,685 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 19:43:27,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032458394] [2024-06-27 19:43:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032458394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:27,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:27,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:43:27,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073568845] [2024-06-27 19:43:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:27,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:43:27,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:27,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:43:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:43:27,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 19:43:27,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 19:43:27,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:27,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 19:43:27,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:27,790 INFO L124 PetriNetUnfolderBase]: 332/666 cut-off events. [2024-06-27 19:43:27,790 INFO L125 PetriNetUnfolderBase]: For 1501/1501 co-relation queries the response was YES. [2024-06-27 19:43:27,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 666 events. 332/666 cut-off events. For 1501/1501 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3162 event pairs, 156 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 2022. Up to 554 conditions per place. [2024-06-27 19:43:27,794 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 46 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2024-06-27 19:43:27,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 448 flow [2024-06-27 19:43:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:43:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:43:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-27 19:43:27,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351351351351351 [2024-06-27 19:43:27,795 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 282 flow. Second operand 5 states and 99 transitions. [2024-06-27 19:43:27,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 448 flow [2024-06-27 19:43:27,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 427 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:27,798 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 304 flow [2024-06-27 19:43:27,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-06-27 19:43:27,799 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2024-06-27 19:43:27,799 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 304 flow [2024-06-27 19:43:27,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 19:43:27,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:27,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:27,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:43:27,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:27,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash 307924739, now seen corresponding path program 1 times [2024-06-27 19:43:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500964141] [2024-06-27 19:43:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:27,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:27,933 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 19:43:27,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:27,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500964141] [2024-06-27 19:43:27,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500964141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:27,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:27,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:27,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066855235] [2024-06-27 19:43:27,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:27,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:27,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:27,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:27,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 19:43:27,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:27,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:27,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:28,051 INFO L124 PetriNetUnfolderBase]: 382/736 cut-off events. [2024-06-27 19:43:28,051 INFO L125 PetriNetUnfolderBase]: For 2074/2074 co-relation queries the response was YES. [2024-06-27 19:43:28,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 736 events. 382/736 cut-off events. For 2074/2074 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3383 event pairs, 190 based on Foata normal form. 4/737 useless extension candidates. Maximal degree in co-relation 2374. Up to 638 conditions per place. [2024-06-27 19:43:28,055 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 49 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2024-06-27 19:43:28,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 67 transitions, 460 flow [2024-06-27 19:43:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:43:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:43:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-06-27 19:43:28,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 19:43:28,058 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 304 flow. Second operand 5 states and 95 transitions. [2024-06-27 19:43:28,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 67 transitions, 460 flow [2024-06-27 19:43:28,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 450 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:28,062 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 336 flow [2024-06-27 19:43:28,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-06-27 19:43:28,065 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2024-06-27 19:43:28,065 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 336 flow [2024-06-27 19:43:28,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 19:43:28,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:28,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:28,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:43:28,066 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:28,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1906433551, now seen corresponding path program 1 times [2024-06-27 19:43:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:28,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596487240] [2024-06-27 19:43:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:28,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:28,094 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 19:43:28,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:28,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596487240] [2024-06-27 19:43:28,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596487240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:28,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:28,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:43:28,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146060017] [2024-06-27 19:43:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:28,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:43:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:43:28,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:43:28,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 37 [2024-06-27 19:43:28,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 19:43:28,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:28,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 37 [2024-06-27 19:43:28,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:28,150 INFO L124 PetriNetUnfolderBase]: 155/410 cut-off events. [2024-06-27 19:43:28,151 INFO L125 PetriNetUnfolderBase]: For 792/815 co-relation queries the response was YES. [2024-06-27 19:43:28,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 410 events. 155/410 cut-off events. For 792/815 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2174 event pairs, 103 based on Foata normal form. 11/407 useless extension candidates. Maximal degree in co-relation 1147. Up to 201 conditions per place. [2024-06-27 19:43:28,153 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 15 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-06-27 19:43:28,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 376 flow [2024-06-27 19:43:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:43:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:43:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-27 19:43:28,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-06-27 19:43:28,154 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 336 flow. Second operand 3 states and 78 transitions. [2024-06-27 19:43:28,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 376 flow [2024-06-27 19:43:28,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 368 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:28,157 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 336 flow [2024-06-27 19:43:28,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-27 19:43:28,158 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2024-06-27 19:43:28,158 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 336 flow [2024-06-27 19:43:28,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 19:43:28,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:28,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:28,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:43:28,159 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:28,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:28,160 INFO L85 PathProgramCache]: Analyzing trace with hash -693832306, now seen corresponding path program 1 times [2024-06-27 19:43:28,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:28,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116718443] [2024-06-27 19:43:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:28,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:28,185 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 19:43:28,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:28,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116718443] [2024-06-27 19:43:28,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116718443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:28,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:28,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:43:28,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831939050] [2024-06-27 19:43:28,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:28,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:43:28,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:28,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:43:28,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:43:28,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 37 [2024-06-27 19:43:28,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 19:43:28,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:28,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 37 [2024-06-27 19:43:28,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:28,226 INFO L124 PetriNetUnfolderBase]: 158/439 cut-off events. [2024-06-27 19:43:28,227 INFO L125 PetriNetUnfolderBase]: For 898/915 co-relation queries the response was YES. [2024-06-27 19:43:28,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 439 events. 158/439 cut-off events. For 898/915 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2299 event pairs, 100 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1274. Up to 196 conditions per place. [2024-06-27 19:43:28,229 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 18 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-06-27 19:43:28,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 390 flow [2024-06-27 19:43:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:43:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:43:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-27 19:43:28,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2024-06-27 19:43:28,230 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 336 flow. Second operand 3 states and 81 transitions. [2024-06-27 19:43:28,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 390 flow [2024-06-27 19:43:28,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 386 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:43:28,233 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 340 flow [2024-06-27 19:43:28,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-06-27 19:43:28,234 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2024-06-27 19:43:28,234 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 340 flow [2024-06-27 19:43:28,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 19:43:28,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:28,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:28,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:43:28,235 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:28,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1720795868, now seen corresponding path program 2 times [2024-06-27 19:43:28,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:28,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862166543] [2024-06-27 19:43:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:28,348 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 19:43:28,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:28,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862166543] [2024-06-27 19:43:28,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862166543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:28,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:28,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393055065] [2024-06-27 19:43:28,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:28,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:28,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 19:43:28,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 19:43:28,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:28,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 19:43:28,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:28,465 INFO L124 PetriNetUnfolderBase]: 350/716 cut-off events. [2024-06-27 19:43:28,465 INFO L125 PetriNetUnfolderBase]: For 2474/2483 co-relation queries the response was YES. [2024-06-27 19:43:28,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 716 events. 350/716 cut-off events. For 2474/2483 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3330 event pairs, 141 based on Foata normal form. 8/713 useless extension candidates. Maximal degree in co-relation 2473. Up to 569 conditions per place. [2024-06-27 19:43:28,469 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 51 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-27 19:43:28,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 586 flow [2024-06-27 19:43:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:43:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:43:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-27 19:43:28,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545045045045045 [2024-06-27 19:43:28,471 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 340 flow. Second operand 6 states and 121 transitions. [2024-06-27 19:43:28,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 586 flow [2024-06-27 19:43:28,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:43:28,476 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 440 flow [2024-06-27 19:43:28,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-06-27 19:43:28,476 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2024-06-27 19:43:28,476 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 440 flow [2024-06-27 19:43:28,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 19:43:28,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:28,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:28,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:43:28,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:28,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash 955148898, now seen corresponding path program 3 times [2024-06-27 19:43:28,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:28,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778461051] [2024-06-27 19:43:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:28,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:28,612 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 19:43:28,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:28,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778461051] [2024-06-27 19:43:28,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778461051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:28,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:28,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:28,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617933352] [2024-06-27 19:43:28,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:28,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:28,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:28,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:28,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 19:43:28,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 19:43:28,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:28,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 19:43:28,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:28,729 INFO L124 PetriNetUnfolderBase]: 344/708 cut-off events. [2024-06-27 19:43:28,729 INFO L125 PetriNetUnfolderBase]: For 3039/3048 co-relation queries the response was YES. [2024-06-27 19:43:28,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 708 events. 344/708 cut-off events. For 3039/3048 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3304 event pairs, 148 based on Foata normal form. 8/705 useless extension candidates. Maximal degree in co-relation 2636. Up to 533 conditions per place. [2024-06-27 19:43:28,733 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 47 selfloop transitions, 20 changer transitions 0/79 dead transitions. [2024-06-27 19:43:28,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 638 flow [2024-06-27 19:43:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:43:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:43:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-27 19:43:28,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-27 19:43:28,735 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 440 flow. Second operand 6 states and 117 transitions. [2024-06-27 19:43:28,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 638 flow [2024-06-27 19:43:28,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 622 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-27 19:43:28,740 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 487 flow [2024-06-27 19:43:28,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-27 19:43:28,741 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2024-06-27 19:43:28,741 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 487 flow [2024-06-27 19:43:28,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 19:43:28,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:28,742 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] [2024-06-27 19:43:28,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:43:28,742 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:28,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:28,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1152781830, now seen corresponding path program 1 times [2024-06-27 19:43:28,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:28,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656323621] [2024-06-27 19:43:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:28,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:28,880 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 19:43:28,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656323621] [2024-06-27 19:43:28,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656323621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:28,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:28,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:28,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132305084] [2024-06-27 19:43:28,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:28,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:43:28,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:28,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:43:28,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:43:28,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:28,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:28,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:28,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:28,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:29,088 INFO L124 PetriNetUnfolderBase]: 469/899 cut-off events. [2024-06-27 19:43:29,089 INFO L125 PetriNetUnfolderBase]: For 4515/4524 co-relation queries the response was YES. [2024-06-27 19:43:29,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 899 events. 469/899 cut-off events. For 4515/4524 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4278 event pairs, 127 based on Foata normal form. 12/901 useless extension candidates. Maximal degree in co-relation 3456. Up to 579 conditions per place. [2024-06-27 19:43:29,095 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 76 selfloop transitions, 27 changer transitions 0/112 dead transitions. [2024-06-27 19:43:29,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 112 transitions, 918 flow [2024-06-27 19:43:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:43:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:43:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 19:43:29,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-06-27 19:43:29,096 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 487 flow. Second operand 9 states and 177 transitions. [2024-06-27 19:43:29,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 112 transitions, 918 flow [2024-06-27 19:43:29,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 888 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 19:43:29,104 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 634 flow [2024-06-27 19:43:29,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=634, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-27 19:43:29,105 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 54 predicate places. [2024-06-27 19:43:29,105 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 634 flow [2024-06-27 19:43:29,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:29,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:29,106 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] [2024-06-27 19:43:29,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:43:29,106 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:29,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash -969510364, now seen corresponding path program 2 times [2024-06-27 19:43:29,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:29,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117312253] [2024-06-27 19:43:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:29,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:29,237 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 19:43:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117312253] [2024-06-27 19:43:29,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117312253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:29,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:29,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921101094] [2024-06-27 19:43:29,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:29,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:43:29,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:29,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:43:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:43:29,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:29,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 634 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:29,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:29,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:29,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:29,441 INFO L124 PetriNetUnfolderBase]: 504/968 cut-off events. [2024-06-27 19:43:29,441 INFO L125 PetriNetUnfolderBase]: For 6247/6256 co-relation queries the response was YES. [2024-06-27 19:43:29,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 968 events. 504/968 cut-off events. For 6247/6256 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4761 event pairs, 137 based on Foata normal form. 12/970 useless extension candidates. Maximal degree in co-relation 4027. Up to 569 conditions per place. [2024-06-27 19:43:29,447 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 80 selfloop transitions, 34 changer transitions 0/123 dead transitions. [2024-06-27 19:43:29,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 123 transitions, 1090 flow [2024-06-27 19:43:29,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:43:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:43:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 19:43:29,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184275184275184 [2024-06-27 19:43:29,448 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 634 flow. Second operand 11 states and 211 transitions. [2024-06-27 19:43:29,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 123 transitions, 1090 flow [2024-06-27 19:43:29,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 123 transitions, 1041 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 19:43:29,457 INFO L231 Difference]: Finished difference. Result has 102 places, 85 transitions, 716 flow [2024-06-27 19:43:29,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=716, PETRI_PLACES=102, PETRI_TRANSITIONS=85} [2024-06-27 19:43:29,457 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2024-06-27 19:43:29,457 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 85 transitions, 716 flow [2024-06-27 19:43:29,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:29,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:29,458 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] [2024-06-27 19:43:29,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:43:29,458 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:29,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash -455154334, now seen corresponding path program 3 times [2024-06-27 19:43:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:29,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950119549] [2024-06-27 19:43:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:29,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:29,594 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 19:43:29,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:29,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950119549] [2024-06-27 19:43:29,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950119549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:29,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:29,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160171597] [2024-06-27 19:43:29,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:29,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:43:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:43:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:43:29,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:29,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 85 transitions, 716 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:29,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:29,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:29,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:29,795 INFO L124 PetriNetUnfolderBase]: 545/1039 cut-off events. [2024-06-27 19:43:29,796 INFO L125 PetriNetUnfolderBase]: For 7845/7854 co-relation queries the response was YES. [2024-06-27 19:43:29,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 1039 events. 545/1039 cut-off events. For 7845/7854 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5177 event pairs, 139 based on Foata normal form. 12/1041 useless extension candidates. Maximal degree in co-relation 4447. Up to 506 conditions per place. [2024-06-27 19:43:29,802 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 70 selfloop transitions, 42 changer transitions 0/121 dead transitions. [2024-06-27 19:43:29,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 121 transitions, 1144 flow [2024-06-27 19:43:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:43:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:43:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 19:43:29,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-27 19:43:29,804 INFO L175 Difference]: Start difference. First operand has 102 places, 85 transitions, 716 flow. Second operand 10 states and 187 transitions. [2024-06-27 19:43:29,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 121 transitions, 1144 flow [2024-06-27 19:43:29,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 121 transitions, 1091 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:43:29,813 INFO L231 Difference]: Finished difference. Result has 106 places, 90 transitions, 812 flow [2024-06-27 19:43:29,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=812, PETRI_PLACES=106, PETRI_TRANSITIONS=90} [2024-06-27 19:43:29,813 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2024-06-27 19:43:29,813 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 812 flow [2024-06-27 19:43:29,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:29,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:29,814 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] [2024-06-27 19:43:29,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:43:29,814 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:29,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1102268154, now seen corresponding path program 1 times [2024-06-27 19:43:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440546044] [2024-06-27 19:43:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:29,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:29,953 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 19:43:29,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:29,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440546044] [2024-06-27 19:43:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440546044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:29,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:29,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:43:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501908182] [2024-06-27 19:43:29,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:29,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:43:29,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:29,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:43:29,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:43:30,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:30,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 812 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:30,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:30,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:30,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:30,198 INFO L124 PetriNetUnfolderBase]: 556/1086 cut-off events. [2024-06-27 19:43:30,198 INFO L125 PetriNetUnfolderBase]: For 9811/9820 co-relation queries the response was YES. [2024-06-27 19:43:30,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 1086 events. 556/1086 cut-off events. For 9811/9820 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5700 event pairs, 169 based on Foata normal form. 14/1092 useless extension candidates. Maximal degree in co-relation 4815. Up to 802 conditions per place. [2024-06-27 19:43:30,205 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 90 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-27 19:43:30,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 125 transitions, 1202 flow [2024-06-27 19:43:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:43:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:43:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 19:43:30,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 19:43:30,207 INFO L175 Difference]: Start difference. First operand has 106 places, 90 transitions, 812 flow. Second operand 8 states and 151 transitions. [2024-06-27 19:43:30,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 125 transitions, 1202 flow [2024-06-27 19:43:30,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 125 transitions, 1148 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 19:43:30,218 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 914 flow [2024-06-27 19:43:30,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=914, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-06-27 19:43:30,218 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2024-06-27 19:43:30,218 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 914 flow [2024-06-27 19:43:30,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:30,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:30,219 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] [2024-06-27 19:43:30,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:43:30,219 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:30,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 983507472, now seen corresponding path program 2 times [2024-06-27 19:43:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:30,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044226257] [2024-06-27 19:43:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:30,362 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 19:43:30,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:30,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044226257] [2024-06-27 19:43:30,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044226257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:30,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:30,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:43:30,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361257389] [2024-06-27 19:43:30,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:30,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:43:30,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:30,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:43:30,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:43:30,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:30,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 914 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:30,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:30,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:30,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:30,632 INFO L124 PetriNetUnfolderBase]: 596/1150 cut-off events. [2024-06-27 19:43:30,632 INFO L125 PetriNetUnfolderBase]: For 11230/11239 co-relation queries the response was YES. [2024-06-27 19:43:30,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5301 conditions, 1150 events. 596/1150 cut-off events. For 11230/11239 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6073 event pairs, 194 based on Foata normal form. 14/1156 useless extension candidates. Maximal degree in co-relation 5245. Up to 810 conditions per place. [2024-06-27 19:43:30,641 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 97 selfloop transitions, 26 changer transitions 0/138 dead transitions. [2024-06-27 19:43:30,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 138 transitions, 1347 flow [2024-06-27 19:43:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:43:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:43:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 19:43:30,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 19:43:30,642 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 914 flow. Second operand 9 states and 169 transitions. [2024-06-27 19:43:30,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 138 transitions, 1347 flow [2024-06-27 19:43:30,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 138 transitions, 1291 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-06-27 19:43:30,701 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 1050 flow [2024-06-27 19:43:30,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1050, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-06-27 19:43:30,702 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 88 predicate places. [2024-06-27 19:43:30,702 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 1050 flow [2024-06-27 19:43:30,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:30,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:30,703 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] [2024-06-27 19:43:30,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:43:30,703 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:30,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:30,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1301714094, now seen corresponding path program 3 times [2024-06-27 19:43:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:30,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151211052] [2024-06-27 19:43:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:30,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:30,841 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 19:43:30,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:30,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151211052] [2024-06-27 19:43:30,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151211052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:30,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:30,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:43:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089750708] [2024-06-27 19:43:30,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:30,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:43:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:30,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:43:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:43:30,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:30,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 1050 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:30,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:30,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:30,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:31,085 INFO L124 PetriNetUnfolderBase]: 584/1130 cut-off events. [2024-06-27 19:43:31,085 INFO L125 PetriNetUnfolderBase]: For 11832/11838 co-relation queries the response was YES. [2024-06-27 19:43:31,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 1130 events. 584/1130 cut-off events. For 11832/11838 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5966 event pairs, 187 based on Foata normal form. 12/1134 useless extension candidates. Maximal degree in co-relation 5246. Up to 831 conditions per place. [2024-06-27 19:43:31,099 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 102 selfloop transitions, 22 changer transitions 0/139 dead transitions. [2024-06-27 19:43:31,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 139 transitions, 1392 flow [2024-06-27 19:43:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:43:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:43:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 19:43:31,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-27 19:43:31,100 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 1050 flow. Second operand 8 states and 156 transitions. [2024-06-27 19:43:31,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 139 transitions, 1392 flow [2024-06-27 19:43:31,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 139 transitions, 1343 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 19:43:31,121 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 1074 flow [2024-06-27 19:43:31,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1074, PETRI_PLACES=132, PETRI_TRANSITIONS=113} [2024-06-27 19:43:31,122 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 94 predicate places. [2024-06-27 19:43:31,122 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 1074 flow [2024-06-27 19:43:31,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:31,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:31,122 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] [2024-06-27 19:43:31,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:43:31,123 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:31,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash 875427319, now seen corresponding path program 1 times [2024-06-27 19:43:31,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:31,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952334481] [2024-06-27 19:43:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:31,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:31,172 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 19:43:31,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952334481] [2024-06-27 19:43:31,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952334481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:31,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:31,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:31,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184776500] [2024-06-27 19:43:31,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:31,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:31,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:31,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:31,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:31,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 19:43:31,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 113 transitions, 1074 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 19:43:31,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:31,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 19:43:31,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:31,392 INFO L124 PetriNetUnfolderBase]: 449/1039 cut-off events. [2024-06-27 19:43:31,392 INFO L125 PetriNetUnfolderBase]: For 8370/8430 co-relation queries the response was YES. [2024-06-27 19:43:31,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 1039 events. 449/1039 cut-off events. For 8370/8430 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6456 event pairs, 104 based on Foata normal form. 16/1026 useless extension candidates. Maximal degree in co-relation 4382. Up to 217 conditions per place. [2024-06-27 19:43:31,403 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 59 selfloop transitions, 41 changer transitions 0/146 dead transitions. [2024-06-27 19:43:31,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 146 transitions, 1368 flow [2024-06-27 19:43:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:43:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:43:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 19:43:31,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6336336336336337 [2024-06-27 19:43:31,405 INFO L175 Difference]: Start difference. First operand has 132 places, 113 transitions, 1074 flow. Second operand 9 states and 211 transitions. [2024-06-27 19:43:31,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 146 transitions, 1368 flow [2024-06-27 19:43:31,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 146 transitions, 1301 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:43:31,421 INFO L231 Difference]: Finished difference. Result has 138 places, 112 transitions, 1138 flow [2024-06-27 19:43:31,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1138, PETRI_PLACES=138, PETRI_TRANSITIONS=112} [2024-06-27 19:43:31,422 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 100 predicate places. [2024-06-27 19:43:31,422 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 112 transitions, 1138 flow [2024-06-27 19:43:31,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 19:43:31,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:31,422 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] [2024-06-27 19:43:31,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:43:31,423 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:31,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash 567922068, now seen corresponding path program 1 times [2024-06-27 19:43:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:31,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143352282] [2024-06-27 19:43:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:31,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:31,558 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 19:43:31,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:31,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143352282] [2024-06-27 19:43:31,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143352282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:31,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:31,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:43:31,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146537619] [2024-06-27 19:43:31,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:31,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:43:31,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:43:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:43:31,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 19:43:31,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 112 transitions, 1138 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 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 19:43:31,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:31,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 19:43:31,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:31,868 INFO L124 PetriNetUnfolderBase]: 762/1495 cut-off events. [2024-06-27 19:43:31,868 INFO L125 PetriNetUnfolderBase]: For 18287/18331 co-relation queries the response was YES. [2024-06-27 19:43:31,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7305 conditions, 1495 events. 762/1495 cut-off events. For 18287/18331 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8489 event pairs, 260 based on Foata normal form. 12/1493 useless extension candidates. Maximal degree in co-relation 7237. Up to 1068 conditions per place. [2024-06-27 19:43:31,878 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 122 selfloop transitions, 28 changer transitions 0/164 dead transitions. [2024-06-27 19:43:31,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 164 transitions, 1838 flow [2024-06-27 19:43:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:43:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:43:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-27 19:43:31,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42117117117117114 [2024-06-27 19:43:31,880 INFO L175 Difference]: Start difference. First operand has 138 places, 112 transitions, 1138 flow. Second operand 12 states and 187 transitions. [2024-06-27 19:43:31,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 164 transitions, 1838 flow [2024-06-27 19:43:31,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 164 transitions, 1826 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:31,902 INFO L231 Difference]: Finished difference. Result has 155 places, 128 transitions, 1438 flow [2024-06-27 19:43:31,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1438, PETRI_PLACES=155, PETRI_TRANSITIONS=128} [2024-06-27 19:43:31,902 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 117 predicate places. [2024-06-27 19:43:31,903 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 128 transitions, 1438 flow [2024-06-27 19:43:31,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 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 19:43:31,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:31,903 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] [2024-06-27 19:43:31,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:43:31,903 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:31,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:31,904 INFO L85 PathProgramCache]: Analyzing trace with hash -480435368, now seen corresponding path program 2 times [2024-06-27 19:43:31,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:31,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586583830] [2024-06-27 19:43:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:31,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:32,026 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 19:43:32,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:32,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586583830] [2024-06-27 19:43:32,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586583830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:32,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:32,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:32,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140970301] [2024-06-27 19:43:32,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:32,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:43:32,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:32,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:43:32,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:43:32,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:32,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 128 transitions, 1438 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:32,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:32,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:32,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:32,333 INFO L124 PetriNetUnfolderBase]: 836/1617 cut-off events. [2024-06-27 19:43:32,334 INFO L125 PetriNetUnfolderBase]: For 21697/21744 co-relation queries the response was YES. [2024-06-27 19:43:32,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8349 conditions, 1617 events. 836/1617 cut-off events. For 21697/21744 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9226 event pairs, 284 based on Foata normal form. 6/1607 useless extension candidates. Maximal degree in co-relation 8273. Up to 1000 conditions per place. [2024-06-27 19:43:32,345 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 114 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2024-06-27 19:43:32,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 166 transitions, 2012 flow [2024-06-27 19:43:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:43:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:43:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-27 19:43:32,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371621621621622 [2024-06-27 19:43:32,346 INFO L175 Difference]: Start difference. First operand has 155 places, 128 transitions, 1438 flow. Second operand 8 states and 159 transitions. [2024-06-27 19:43:32,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 166 transitions, 2012 flow [2024-06-27 19:43:32,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 166 transitions, 1970 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 19:43:32,377 INFO L231 Difference]: Finished difference. Result has 163 places, 135 transitions, 1595 flow [2024-06-27 19:43:32,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1595, PETRI_PLACES=163, PETRI_TRANSITIONS=135} [2024-06-27 19:43:32,378 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 125 predicate places. [2024-06-27 19:43:32,378 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 135 transitions, 1595 flow [2024-06-27 19:43:32,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:32,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:32,378 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] [2024-06-27 19:43:32,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:43:32,379 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:32,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:32,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1925364983, now seen corresponding path program 2 times [2024-06-27 19:43:32,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:32,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264733451] [2024-06-27 19:43:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:32,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:32,437 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 19:43:32,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:32,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264733451] [2024-06-27 19:43:32,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264733451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:32,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:32,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:32,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838024509] [2024-06-27 19:43:32,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:32,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:32,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:32,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:32,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:32,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 19:43:32,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 135 transitions, 1595 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 19:43:32,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:32,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 19:43:32,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:32,681 INFO L124 PetriNetUnfolderBase]: 549/1285 cut-off events. [2024-06-27 19:43:32,681 INFO L125 PetriNetUnfolderBase]: For 13426/13538 co-relation queries the response was YES. [2024-06-27 19:43:32,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 1285 events. 549/1285 cut-off events. For 13426/13538 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8410 event pairs, 158 based on Foata normal form. 14/1250 useless extension candidates. Maximal degree in co-relation 6221. Up to 517 conditions per place. [2024-06-27 19:43:32,689 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 72 selfloop transitions, 28 changer transitions 0/156 dead transitions. [2024-06-27 19:43:32,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 156 transitions, 1870 flow [2024-06-27 19:43:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:43:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:43:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 19:43:32,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 19:43:32,690 INFO L175 Difference]: Start difference. First operand has 163 places, 135 transitions, 1595 flow. Second operand 6 states and 148 transitions. [2024-06-27 19:43:32,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 156 transitions, 1870 flow [2024-06-27 19:43:32,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 156 transitions, 1822 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 19:43:32,719 INFO L231 Difference]: Finished difference. Result has 169 places, 136 transitions, 1675 flow [2024-06-27 19:43:32,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1675, PETRI_PLACES=169, PETRI_TRANSITIONS=136} [2024-06-27 19:43:32,720 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 131 predicate places. [2024-06-27 19:43:32,720 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 136 transitions, 1675 flow [2024-06-27 19:43:32,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 19:43:32,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:32,720 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] [2024-06-27 19:43:32,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:43:32,721 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:32,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:32,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1060492785, now seen corresponding path program 3 times [2024-06-27 19:43:32,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:32,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327819311] [2024-06-27 19:43:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:32,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:32,847 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 19:43:32,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:32,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327819311] [2024-06-27 19:43:32,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327819311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:32,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:32,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:32,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262953758] [2024-06-27 19:43:32,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:32,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:43:32,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:43:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:43:32,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:32,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 136 transitions, 1675 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:32,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:32,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:32,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:33,167 INFO L124 PetriNetUnfolderBase]: 802/1614 cut-off events. [2024-06-27 19:43:33,167 INFO L125 PetriNetUnfolderBase]: For 25315/25318 co-relation queries the response was YES. [2024-06-27 19:43:33,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 1614 events. 802/1614 cut-off events. For 25315/25318 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9537 event pairs, 235 based on Foata normal form. 6/1606 useless extension candidates. Maximal degree in co-relation 8606. Up to 902 conditions per place. [2024-06-27 19:43:33,177 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 103 selfloop transitions, 51 changer transitions 0/169 dead transitions. [2024-06-27 19:43:33,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 169 transitions, 2178 flow [2024-06-27 19:43:33,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:43:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:43:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 19:43:33,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 19:43:33,178 INFO L175 Difference]: Start difference. First operand has 169 places, 136 transitions, 1675 flow. Second operand 9 states and 171 transitions. [2024-06-27 19:43:33,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 169 transitions, 2178 flow [2024-06-27 19:43:33,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 169 transitions, 2145 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:33,207 INFO L231 Difference]: Finished difference. Result has 178 places, 138 transitions, 1788 flow [2024-06-27 19:43:33,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=178, PETRI_TRANSITIONS=138} [2024-06-27 19:43:33,208 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 140 predicate places. [2024-06-27 19:43:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 138 transitions, 1788 flow [2024-06-27 19:43:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:33,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:33,208 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] [2024-06-27 19:43:33,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:43:33,208 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:33,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1365593328, now seen corresponding path program 3 times [2024-06-27 19:43:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:33,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098621133] [2024-06-27 19:43:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:33,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:33,335 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 19:43:33,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:33,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098621133] [2024-06-27 19:43:33,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098621133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:33,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:33,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:33,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510426087] [2024-06-27 19:43:33,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:33,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:43:33,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:43:33,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:43:33,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:33,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 138 transitions, 1788 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:33,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:33,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:33,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:33,606 INFO L124 PetriNetUnfolderBase]: 792/1599 cut-off events. [2024-06-27 19:43:33,606 INFO L125 PetriNetUnfolderBase]: For 27462/27525 co-relation queries the response was YES. [2024-06-27 19:43:33,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8918 conditions, 1599 events. 792/1599 cut-off events. For 27462/27525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9450 event pairs, 275 based on Foata normal form. 9/1592 useless extension candidates. Maximal degree in co-relation 8832. Up to 1107 conditions per place. [2024-06-27 19:43:33,617 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 124 selfloop transitions, 27 changer transitions 0/166 dead transitions. [2024-06-27 19:43:33,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 166 transitions, 2273 flow [2024-06-27 19:43:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:43:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:43:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-27 19:43:33,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765765765765766 [2024-06-27 19:43:33,619 INFO L175 Difference]: Start difference. First operand has 178 places, 138 transitions, 1788 flow. Second operand 6 states and 128 transitions. [2024-06-27 19:43:33,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 166 transitions, 2273 flow [2024-06-27 19:43:33,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 166 transitions, 2142 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 19:43:33,655 INFO L231 Difference]: Finished difference. Result has 177 places, 142 transitions, 1791 flow [2024-06-27 19:43:33,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1791, PETRI_PLACES=177, PETRI_TRANSITIONS=142} [2024-06-27 19:43:33,655 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 139 predicate places. [2024-06-27 19:43:33,655 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 142 transitions, 1791 flow [2024-06-27 19:43:33,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 19:43:33,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:33,656 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] [2024-06-27 19:43:33,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:43:33,656 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:33,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1376947615, now seen corresponding path program 1 times [2024-06-27 19:43:33,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:33,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189810880] [2024-06-27 19:43:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:33,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:33,806 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 19:43:33,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:33,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189810880] [2024-06-27 19:43:33,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189810880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:33,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:33,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:43:33,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920050634] [2024-06-27 19:43:33,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:33,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:43:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:33,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:43:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:43:33,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:33,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 142 transitions, 1791 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:33,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:33,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:33,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:34,090 INFO L124 PetriNetUnfolderBase]: 793/1594 cut-off events. [2024-06-27 19:43:34,090 INFO L125 PetriNetUnfolderBase]: For 27165/27170 co-relation queries the response was YES. [2024-06-27 19:43:34,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8895 conditions, 1594 events. 793/1594 cut-off events. For 27165/27170 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9330 event pairs, 316 based on Foata normal form. 4/1590 useless extension candidates. Maximal degree in co-relation 8808. Up to 1385 conditions per place. [2024-06-27 19:43:34,102 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 112 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-27 19:43:34,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 155 transitions, 2103 flow [2024-06-27 19:43:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:43:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:43:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 19:43:34,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 19:43:34,103 INFO L175 Difference]: Start difference. First operand has 177 places, 142 transitions, 1791 flow. Second operand 8 states and 140 transitions. [2024-06-27 19:43:34,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 155 transitions, 2103 flow [2024-06-27 19:43:34,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 155 transitions, 2047 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 19:43:34,139 INFO L231 Difference]: Finished difference. Result has 183 places, 142 transitions, 1783 flow [2024-06-27 19:43:34,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1783, PETRI_PLACES=183, PETRI_TRANSITIONS=142} [2024-06-27 19:43:34,140 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 145 predicate places. [2024-06-27 19:43:34,140 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 142 transitions, 1783 flow [2024-06-27 19:43:34,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:34,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:34,140 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] [2024-06-27 19:43:34,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:43:34,141 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:34,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash -681881443, now seen corresponding path program 2 times [2024-06-27 19:43:34,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:34,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743971346] [2024-06-27 19:43:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:34,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:34,291 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 19:43:34,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:34,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743971346] [2024-06-27 19:43:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743971346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:34,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:34,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:43:34,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742274612] [2024-06-27 19:43:34,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:34,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:43:34,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:43:34,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:43:34,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:34,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 142 transitions, 1783 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:34,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:34,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:34,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:34,590 INFO L124 PetriNetUnfolderBase]: 800/1609 cut-off events. [2024-06-27 19:43:34,591 INFO L125 PetriNetUnfolderBase]: For 29488/29493 co-relation queries the response was YES. [2024-06-27 19:43:34,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8947 conditions, 1609 events. 800/1609 cut-off events. For 29488/29493 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9455 event pairs, 316 based on Foata normal form. 4/1605 useless extension candidates. Maximal degree in co-relation 8859. Up to 1360 conditions per place. [2024-06-27 19:43:34,604 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 108 selfloop transitions, 30 changer transitions 0/159 dead transitions. [2024-06-27 19:43:34,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 159 transitions, 2165 flow [2024-06-27 19:43:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:43:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:43:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 19:43:34,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 19:43:34,605 INFO L175 Difference]: Start difference. First operand has 183 places, 142 transitions, 1783 flow. Second operand 8 states and 139 transitions. [2024-06-27 19:43:34,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 159 transitions, 2165 flow [2024-06-27 19:43:34,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 159 transitions, 2089 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:43:34,643 INFO L231 Difference]: Finished difference. Result has 182 places, 145 transitions, 1797 flow [2024-06-27 19:43:34,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1797, PETRI_PLACES=182, PETRI_TRANSITIONS=145} [2024-06-27 19:43:34,644 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 144 predicate places. [2024-06-27 19:43:34,644 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 145 transitions, 1797 flow [2024-06-27 19:43:34,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:34,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:34,644 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] [2024-06-27 19:43:34,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:43:34,645 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:34,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1224865663, now seen corresponding path program 3 times [2024-06-27 19:43:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:34,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168101230] [2024-06-27 19:43:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:34,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:34,799 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 19:43:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168101230] [2024-06-27 19:43:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168101230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:34,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:34,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:43:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364258168] [2024-06-27 19:43:34,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:34,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:43:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:43:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:43:34,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 19:43:34,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 145 transitions, 1797 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:34,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:34,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 19:43:34,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:35,134 INFO L124 PetriNetUnfolderBase]: 797/1608 cut-off events. [2024-06-27 19:43:35,135 INFO L125 PetriNetUnfolderBase]: For 30761/30766 co-relation queries the response was YES. [2024-06-27 19:43:35,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8979 conditions, 1608 events. 797/1608 cut-off events. For 30761/30766 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9473 event pairs, 302 based on Foata normal form. 4/1604 useless extension candidates. Maximal degree in co-relation 8893. Up to 1358 conditions per place. [2024-06-27 19:43:35,146 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 110 selfloop transitions, 29 changer transitions 0/160 dead transitions. [2024-06-27 19:43:35,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 160 transitions, 2117 flow [2024-06-27 19:43:35,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:43:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:43:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 19:43:35,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 19:43:35,147 INFO L175 Difference]: Start difference. First operand has 182 places, 145 transitions, 1797 flow. Second operand 9 states and 153 transitions. [2024-06-27 19:43:35,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 160 transitions, 2117 flow [2024-06-27 19:43:35,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 160 transitions, 2068 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 19:43:35,184 INFO L231 Difference]: Finished difference. Result has 188 places, 145 transitions, 1810 flow [2024-06-27 19:43:35,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1810, PETRI_PLACES=188, PETRI_TRANSITIONS=145} [2024-06-27 19:43:35,185 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 150 predicate places. [2024-06-27 19:43:35,185 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 145 transitions, 1810 flow [2024-06-27 19:43:35,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:43:35,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:35,185 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] [2024-06-27 19:43:35,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:43:35,186 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:35,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash -278179035, now seen corresponding path program 1 times [2024-06-27 19:43:35,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:35,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598492632] [2024-06-27 19:43:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:35,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:35,348 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 19:43:35,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:35,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598492632] [2024-06-27 19:43:35,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598492632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:35,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:35,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395912416] [2024-06-27 19:43:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:35,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:35,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:35,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 145 transitions, 1810 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:35,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:35,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:35,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:35,741 INFO L124 PetriNetUnfolderBase]: 850/1663 cut-off events. [2024-06-27 19:43:35,742 INFO L125 PetriNetUnfolderBase]: For 32070/32073 co-relation queries the response was YES. [2024-06-27 19:43:35,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9207 conditions, 1663 events. 850/1663 cut-off events. For 32070/32073 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9559 event pairs, 274 based on Foata normal form. 6/1661 useless extension candidates. Maximal degree in co-relation 9120. Up to 1235 conditions per place. [2024-06-27 19:43:35,755 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 134 selfloop transitions, 39 changer transitions 0/180 dead transitions. [2024-06-27 19:43:35,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 180 transitions, 2291 flow [2024-06-27 19:43:35,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:43:35,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:43:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 19:43:35,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 19:43:35,757 INFO L175 Difference]: Start difference. First operand has 188 places, 145 transitions, 1810 flow. Second operand 11 states and 194 transitions. [2024-06-27 19:43:35,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 180 transitions, 2291 flow [2024-06-27 19:43:35,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 180 transitions, 2192 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 19:43:35,800 INFO L231 Difference]: Finished difference. Result has 190 places, 146 transitions, 1802 flow [2024-06-27 19:43:35,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1802, PETRI_PLACES=190, PETRI_TRANSITIONS=146} [2024-06-27 19:43:35,803 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 152 predicate places. [2024-06-27 19:43:35,803 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 146 transitions, 1802 flow [2024-06-27 19:43:35,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:35,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:35,804 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] [2024-06-27 19:43:35,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:43:35,804 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:35,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:35,806 INFO L85 PathProgramCache]: Analyzing trace with hash -266079933, now seen corresponding path program 2 times [2024-06-27 19:43:35,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:35,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19467827] [2024-06-27 19:43:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:35,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:35,964 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 19:43:35,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:35,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19467827] [2024-06-27 19:43:35,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19467827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:35,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:35,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550416055] [2024-06-27 19:43:35,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:35,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:35,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:35,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:36,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:36,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 146 transitions, 1802 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:36,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:36,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:36,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:36,371 INFO L124 PetriNetUnfolderBase]: 862/1681 cut-off events. [2024-06-27 19:43:36,372 INFO L125 PetriNetUnfolderBase]: For 34301/34304 co-relation queries the response was YES. [2024-06-27 19:43:36,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9377 conditions, 1681 events. 862/1681 cut-off events. For 34301/34304 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9657 event pairs, 266 based on Foata normal form. 6/1679 useless extension candidates. Maximal degree in co-relation 9291. Up to 1172 conditions per place. [2024-06-27 19:43:36,384 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 136 selfloop transitions, 47 changer transitions 0/190 dead transitions. [2024-06-27 19:43:36,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 190 transitions, 2374 flow [2024-06-27 19:43:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 19:43:36,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 19:43:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 249 transitions. [2024-06-27 19:43:36,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 19:43:36,386 INFO L175 Difference]: Start difference. First operand has 190 places, 146 transitions, 1802 flow. Second operand 15 states and 249 transitions. [2024-06-27 19:43:36,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 190 transitions, 2374 flow [2024-06-27 19:43:36,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 190 transitions, 2275 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:43:36,450 INFO L231 Difference]: Finished difference. Result has 196 places, 147 transitions, 1813 flow [2024-06-27 19:43:36,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1813, PETRI_PLACES=196, PETRI_TRANSITIONS=147} [2024-06-27 19:43:36,452 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 158 predicate places. [2024-06-27 19:43:36,452 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 147 transitions, 1813 flow [2024-06-27 19:43:36,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:36,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:36,452 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] [2024-06-27 19:43:36,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:43:36,452 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:36,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:36,453 INFO L85 PathProgramCache]: Analyzing trace with hash -266095743, now seen corresponding path program 3 times [2024-06-27 19:43:36,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:36,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904293249] [2024-06-27 19:43:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:36,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:36,602 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 19:43:36,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904293249] [2024-06-27 19:43:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904293249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:36,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:36,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:36,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843739882] [2024-06-27 19:43:36,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:36,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:36,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:36,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:36,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 147 transitions, 1813 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:36,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:36,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:36,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:37,024 INFO L124 PetriNetUnfolderBase]: 883/1726 cut-off events. [2024-06-27 19:43:37,026 INFO L125 PetriNetUnfolderBase]: For 36408/36411 co-relation queries the response was YES. [2024-06-27 19:43:37,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9656 conditions, 1726 events. 883/1726 cut-off events. For 36408/36411 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10073 event pairs, 264 based on Foata normal form. 6/1724 useless extension candidates. Maximal degree in co-relation 9569. Up to 1178 conditions per place. [2024-06-27 19:43:37,040 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 143 selfloop transitions, 50 changer transitions 0/200 dead transitions. [2024-06-27 19:43:37,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 200 transitions, 2456 flow [2024-06-27 19:43:37,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 19:43:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 19:43:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 279 transitions. [2024-06-27 19:43:37,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435612082670906 [2024-06-27 19:43:37,042 INFO L175 Difference]: Start difference. First operand has 196 places, 147 transitions, 1813 flow. Second operand 17 states and 279 transitions. [2024-06-27 19:43:37,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 200 transitions, 2456 flow [2024-06-27 19:43:37,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 200 transitions, 2349 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 19:43:37,091 INFO L231 Difference]: Finished difference. Result has 201 places, 150 transitions, 1849 flow [2024-06-27 19:43:37,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1849, PETRI_PLACES=201, PETRI_TRANSITIONS=150} [2024-06-27 19:43:37,092 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 163 predicate places. [2024-06-27 19:43:37,092 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 150 transitions, 1849 flow [2024-06-27 19:43:37,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:37,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:37,092 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] [2024-06-27 19:43:37,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:43:37,093 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:37,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:37,093 INFO L85 PathProgramCache]: Analyzing trace with hash 308488131, now seen corresponding path program 4 times [2024-06-27 19:43:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:37,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186889899] [2024-06-27 19:43:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:37,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:37,244 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 19:43:37,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:37,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186889899] [2024-06-27 19:43:37,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186889899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:37,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:37,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:37,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716609747] [2024-06-27 19:43:37,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:37,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:37,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:37,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:37,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 150 transitions, 1849 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:37,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:37,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:37,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:37,694 INFO L124 PetriNetUnfolderBase]: 874/1711 cut-off events. [2024-06-27 19:43:37,694 INFO L125 PetriNetUnfolderBase]: For 36989/36992 co-relation queries the response was YES. [2024-06-27 19:43:37,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9532 conditions, 1711 events. 874/1711 cut-off events. For 36989/36992 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9949 event pairs, 264 based on Foata normal form. 6/1709 useless extension candidates. Maximal degree in co-relation 9445. Up to 1176 conditions per place. [2024-06-27 19:43:37,707 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 143 selfloop transitions, 48 changer transitions 0/198 dead transitions. [2024-06-27 19:43:37,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 198 transitions, 2397 flow [2024-06-27 19:43:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 19:43:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 19:43:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 268 transitions. [2024-06-27 19:43:37,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 19:43:37,709 INFO L175 Difference]: Start difference. First operand has 201 places, 150 transitions, 1849 flow. Second operand 16 states and 268 transitions. [2024-06-27 19:43:37,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 198 transitions, 2397 flow [2024-06-27 19:43:37,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 198 transitions, 2285 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-27 19:43:37,757 INFO L231 Difference]: Finished difference. Result has 203 places, 150 transitions, 1837 flow [2024-06-27 19:43:37,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1837, PETRI_PLACES=203, PETRI_TRANSITIONS=150} [2024-06-27 19:43:37,757 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 165 predicate places. [2024-06-27 19:43:37,758 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 150 transitions, 1837 flow [2024-06-27 19:43:37,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:37,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:37,758 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] [2024-06-27 19:43:37,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:43:37,758 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:37,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:37,759 INFO L85 PathProgramCache]: Analyzing trace with hash 192403557, now seen corresponding path program 5 times [2024-06-27 19:43:37,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:37,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056032180] [2024-06-27 19:43:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:37,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:37,912 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 19:43:37,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:37,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056032180] [2024-06-27 19:43:37,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056032180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:37,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:37,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:37,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193598870] [2024-06-27 19:43:37,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:37,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:37,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:37,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:37,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 150 transitions, 1837 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:37,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:37,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:37,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:38,315 INFO L124 PetriNetUnfolderBase]: 916/1795 cut-off events. [2024-06-27 19:43:38,315 INFO L125 PetriNetUnfolderBase]: For 41748/41751 co-relation queries the response was YES. [2024-06-27 19:43:38,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10027 conditions, 1795 events. 916/1795 cut-off events. For 41748/41751 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10596 event pairs, 242 based on Foata normal form. 6/1793 useless extension candidates. Maximal degree in co-relation 9939. Up to 1026 conditions per place. [2024-06-27 19:43:38,327 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 123 selfloop transitions, 70 changer transitions 0/200 dead transitions. [2024-06-27 19:43:38,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 200 transitions, 2520 flow [2024-06-27 19:43:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 19:43:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 19:43:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 245 transitions. [2024-06-27 19:43:38,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 19:43:38,328 INFO L175 Difference]: Start difference. First operand has 203 places, 150 transitions, 1837 flow. Second operand 15 states and 245 transitions. [2024-06-27 19:43:38,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 200 transitions, 2520 flow [2024-06-27 19:43:38,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 200 transitions, 2414 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-27 19:43:38,373 INFO L231 Difference]: Finished difference. Result has 203 places, 154 transitions, 1916 flow [2024-06-27 19:43:38,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1916, PETRI_PLACES=203, PETRI_TRANSITIONS=154} [2024-06-27 19:43:38,374 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 165 predicate places. [2024-06-27 19:43:38,374 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 154 transitions, 1916 flow [2024-06-27 19:43:38,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:38,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:38,375 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] [2024-06-27 19:43:38,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:43:38,375 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:38,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:38,375 INFO L85 PathProgramCache]: Analyzing trace with hash 683871011, now seen corresponding path program 6 times [2024-06-27 19:43:38,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:38,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670399765] [2024-06-27 19:43:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:38,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:38,503 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 19:43:38,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:38,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670399765] [2024-06-27 19:43:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670399765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:38,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:38,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:38,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100984813] [2024-06-27 19:43:38,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:38,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:38,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:38,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:38,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 154 transitions, 1916 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:38,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:38,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:38,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:38,933 INFO L124 PetriNetUnfolderBase]: 928/1819 cut-off events. [2024-06-27 19:43:38,933 INFO L125 PetriNetUnfolderBase]: For 44616/44619 co-relation queries the response was YES. [2024-06-27 19:43:38,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10274 conditions, 1819 events. 928/1819 cut-off events. For 44616/44619 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10804 event pairs, 243 based on Foata normal form. 6/1817 useless extension candidates. Maximal degree in co-relation 10185. Up to 1030 conditions per place. [2024-06-27 19:43:38,943 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 133 selfloop transitions, 68 changer transitions 0/208 dead transitions. [2024-06-27 19:43:38,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 208 transitions, 2672 flow [2024-06-27 19:43:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 19:43:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 19:43:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 277 transitions. [2024-06-27 19:43:38,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44038155802861684 [2024-06-27 19:43:38,944 INFO L175 Difference]: Start difference. First operand has 203 places, 154 transitions, 1916 flow. Second operand 17 states and 277 transitions. [2024-06-27 19:43:38,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 208 transitions, 2672 flow [2024-06-27 19:43:38,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 208 transitions, 2545 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 19:43:38,993 INFO L231 Difference]: Finished difference. Result has 211 places, 156 transitions, 1957 flow [2024-06-27 19:43:38,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1957, PETRI_PLACES=211, PETRI_TRANSITIONS=156} [2024-06-27 19:43:38,994 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 173 predicate places. [2024-06-27 19:43:38,994 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 156 transitions, 1957 flow [2024-06-27 19:43:38,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:38,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:38,994 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] [2024-06-27 19:43:38,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:43:38,994 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:38,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:38,995 INFO L85 PathProgramCache]: Analyzing trace with hash 177194337, now seen corresponding path program 7 times [2024-06-27 19:43:38,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898010551] [2024-06-27 19:43:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:39,142 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 19:43:39,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898010551] [2024-06-27 19:43:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898010551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:39,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:39,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:39,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717968385] [2024-06-27 19:43:39,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:39,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:39,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:39,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:39,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 156 transitions, 1957 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:39,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:39,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:39,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:39,589 INFO L124 PetriNetUnfolderBase]: 949/1858 cut-off events. [2024-06-27 19:43:39,589 INFO L125 PetriNetUnfolderBase]: For 47558/47561 co-relation queries the response was YES. [2024-06-27 19:43:39,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10529 conditions, 1858 events. 949/1858 cut-off events. For 47558/47561 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11124 event pairs, 243 based on Foata normal form. 6/1856 useless extension candidates. Maximal degree in co-relation 10439. Up to 1036 conditions per place. [2024-06-27 19:43:39,600 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 140 selfloop transitions, 71 changer transitions 0/218 dead transitions. [2024-06-27 19:43:39,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 218 transitions, 2770 flow [2024-06-27 19:43:39,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 19:43:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 19:43:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 307 transitions. [2024-06-27 19:43:39,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366998577524893 [2024-06-27 19:43:39,604 INFO L175 Difference]: Start difference. First operand has 211 places, 156 transitions, 1957 flow. Second operand 19 states and 307 transitions. [2024-06-27 19:43:39,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 218 transitions, 2770 flow [2024-06-27 19:43:39,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 218 transitions, 2606 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-27 19:43:39,691 INFO L231 Difference]: Finished difference. Result has 217 places, 159 transitions, 1976 flow [2024-06-27 19:43:39,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1976, PETRI_PLACES=217, PETRI_TRANSITIONS=159} [2024-06-27 19:43:39,692 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 179 predicate places. [2024-06-27 19:43:39,692 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 159 transitions, 1976 flow [2024-06-27 19:43:39,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:39,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:39,692 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] [2024-06-27 19:43:39,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:43:39,692 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:39,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash 192922497, now seen corresponding path program 8 times [2024-06-27 19:43:39,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:39,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994931884] [2024-06-27 19:43:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:39,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:39,814 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 19:43:39,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:39,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994931884] [2024-06-27 19:43:39,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994931884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:39,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:39,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:43:39,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415989683] [2024-06-27 19:43:39,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:39,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:43:39,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:39,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:43:39,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:43:39,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:39,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 159 transitions, 1976 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 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 19:43:39,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:39,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:39,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:40,149 INFO L124 PetriNetUnfolderBase]: 956/1875 cut-off events. [2024-06-27 19:43:40,149 INFO L125 PetriNetUnfolderBase]: For 49313/49316 co-relation queries the response was YES. [2024-06-27 19:43:40,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10600 conditions, 1875 events. 956/1875 cut-off events. For 49313/49316 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11327 event pairs, 244 based on Foata normal form. 6/1873 useless extension candidates. Maximal degree in co-relation 10509. Up to 1040 conditions per place. [2024-06-27 19:43:40,161 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 119 selfloop transitions, 66 changer transitions 0/192 dead transitions. [2024-06-27 19:43:40,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 192 transitions, 2526 flow [2024-06-27 19:43:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:43:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:43:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 19:43:40,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 19:43:40,163 INFO L175 Difference]: Start difference. First operand has 217 places, 159 transitions, 1976 flow. Second operand 10 states and 174 transitions. [2024-06-27 19:43:40,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 192 transitions, 2526 flow [2024-06-27 19:43:40,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 192 transitions, 2378 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-06-27 19:43:40,223 INFO L231 Difference]: Finished difference. Result has 211 places, 160 transitions, 1978 flow [2024-06-27 19:43:40,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1978, PETRI_PLACES=211, PETRI_TRANSITIONS=160} [2024-06-27 19:43:40,223 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 173 predicate places. [2024-06-27 19:43:40,223 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 160 transitions, 1978 flow [2024-06-27 19:43:40,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 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 19:43:40,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:40,224 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] [2024-06-27 19:43:40,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:43:40,224 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:40,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash 176733057, now seen corresponding path program 9 times [2024-06-27 19:43:40,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:40,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747538527] [2024-06-27 19:43:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:40,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:40,340 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 19:43:40,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747538527] [2024-06-27 19:43:40,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747538527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:40,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:40,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:40,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765013124] [2024-06-27 19:43:40,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:40,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:40,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:40,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:40,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:40,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:40,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 160 transitions, 1978 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:40,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:40,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:40,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:40,781 INFO L124 PetriNetUnfolderBase]: 947/1860 cut-off events. [2024-06-27 19:43:40,782 INFO L125 PetriNetUnfolderBase]: For 49569/49572 co-relation queries the response was YES. [2024-06-27 19:43:40,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10459 conditions, 1860 events. 947/1860 cut-off events. For 49569/49572 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11182 event pairs, 246 based on Foata normal form. 6/1858 useless extension candidates. Maximal degree in co-relation 10367. Up to 1038 conditions per place. [2024-06-27 19:43:40,792 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 126 selfloop transitions, 71 changer transitions 0/204 dead transitions. [2024-06-27 19:43:40,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 204 transitions, 2636 flow [2024-06-27 19:43:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 19:43:40,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 19:43:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 235 transitions. [2024-06-27 19:43:40,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45366795366795365 [2024-06-27 19:43:40,793 INFO L175 Difference]: Start difference. First operand has 211 places, 160 transitions, 1978 flow. Second operand 14 states and 235 transitions. [2024-06-27 19:43:40,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 204 transitions, 2636 flow [2024-06-27 19:43:40,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 204 transitions, 2521 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:43:40,857 INFO L231 Difference]: Finished difference. Result has 219 places, 160 transitions, 2009 flow [2024-06-27 19:43:40,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2009, PETRI_PLACES=219, PETRI_TRANSITIONS=160} [2024-06-27 19:43:40,858 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 181 predicate places. [2024-06-27 19:43:40,858 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 160 transitions, 2009 flow [2024-06-27 19:43:40,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:40,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:40,858 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] [2024-06-27 19:43:40,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:43:40,859 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:40,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash 336496837, now seen corresponding path program 10 times [2024-06-27 19:43:40,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:40,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276218879] [2024-06-27 19:43:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:41,030 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 19:43:41,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:41,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276218879] [2024-06-27 19:43:41,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276218879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:41,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:41,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251834368] [2024-06-27 19:43:41,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:41,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:41,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:41,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 160 transitions, 2009 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:41,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:41,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:41,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:41,459 INFO L124 PetriNetUnfolderBase]: 938/1845 cut-off events. [2024-06-27 19:43:41,460 INFO L125 PetriNetUnfolderBase]: For 49771/49774 co-relation queries the response was YES. [2024-06-27 19:43:41,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10372 conditions, 1845 events. 938/1845 cut-off events. For 49771/49774 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11091 event pairs, 249 based on Foata normal form. 6/1843 useless extension candidates. Maximal degree in co-relation 10279. Up to 1036 conditions per place. [2024-06-27 19:43:41,470 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 122 selfloop transitions, 76 changer transitions 0/205 dead transitions. [2024-06-27 19:43:41,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 205 transitions, 2617 flow [2024-06-27 19:43:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 19:43:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 19:43:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 244 transitions. [2024-06-27 19:43:41,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43963963963963965 [2024-06-27 19:43:41,473 INFO L175 Difference]: Start difference. First operand has 219 places, 160 transitions, 2009 flow. Second operand 15 states and 244 transitions. [2024-06-27 19:43:41,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 205 transitions, 2617 flow [2024-06-27 19:43:41,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 205 transitions, 2457 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-27 19:43:41,537 INFO L231 Difference]: Finished difference. Result has 220 places, 160 transitions, 2007 flow [2024-06-27 19:43:41,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2007, PETRI_PLACES=220, PETRI_TRANSITIONS=160} [2024-06-27 19:43:41,538 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 182 predicate places. [2024-06-27 19:43:41,538 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 160 transitions, 2007 flow [2024-06-27 19:43:41,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 19:43:41,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:41,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:41,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:43:41,538 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:41,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:41,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1600630375, now seen corresponding path program 1 times [2024-06-27 19:43:41,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:41,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228014001] [2024-06-27 19:43:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:41,653 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 19:43:41,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:41,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228014001] [2024-06-27 19:43:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228014001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:41,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:41,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:43:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247162883] [2024-06-27 19:43:41,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:43:41,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:41,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:43:41,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:43:41,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:41,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 160 transitions, 2007 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 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 19:43:41,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:41,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:41,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:41,980 INFO L124 PetriNetUnfolderBase]: 902/1785 cut-off events. [2024-06-27 19:43:41,980 INFO L125 PetriNetUnfolderBase]: For 46695/46698 co-relation queries the response was YES. [2024-06-27 19:43:41,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9407 conditions, 1785 events. 902/1785 cut-off events. For 46695/46698 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10689 event pairs, 283 based on Foata normal form. 24/1801 useless extension candidates. Maximal degree in co-relation 9314. Up to 1237 conditions per place. [2024-06-27 19:43:41,991 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 141 selfloop transitions, 41 changer transitions 0/189 dead transitions. [2024-06-27 19:43:41,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 189 transitions, 2489 flow [2024-06-27 19:43:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:43:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:43:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 19:43:41,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 19:43:41,997 INFO L175 Difference]: Start difference. First operand has 220 places, 160 transitions, 2007 flow. Second operand 9 states and 160 transitions. [2024-06-27 19:43:41,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 189 transitions, 2489 flow [2024-06-27 19:43:42,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 189 transitions, 2317 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-27 19:43:42,046 INFO L231 Difference]: Finished difference. Result has 215 places, 160 transitions, 1926 flow [2024-06-27 19:43:42,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1926, PETRI_PLACES=215, PETRI_TRANSITIONS=160} [2024-06-27 19:43:42,046 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 177 predicate places. [2024-06-27 19:43:42,046 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 160 transitions, 1926 flow [2024-06-27 19:43:42,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 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 19:43:42,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:42,046 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] [2024-06-27 19:43:42,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:43:42,047 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:42,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2080936130, now seen corresponding path program 1 times [2024-06-27 19:43:42,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:42,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829320497] [2024-06-27 19:43:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:42,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:42,097 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 19:43:42,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:42,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829320497] [2024-06-27 19:43:42,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829320497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:42,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:42,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:42,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933253997] [2024-06-27 19:43:42,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:42,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:42,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:42,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:42,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:42,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 19:43:42,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 160 transitions, 1926 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 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 19:43:42,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:42,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 19:43:42,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:42,311 INFO L124 PetriNetUnfolderBase]: 573/1345 cut-off events. [2024-06-27 19:43:42,312 INFO L125 PetriNetUnfolderBase]: For 16047/16050 co-relation queries the response was YES. [2024-06-27 19:43:42,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6242 conditions, 1345 events. 573/1345 cut-off events. For 16047/16050 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8923 event pairs, 172 based on Foata normal form. 16/1334 useless extension candidates. Maximal degree in co-relation 6148. Up to 675 conditions per place. [2024-06-27 19:43:42,319 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 80 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2024-06-27 19:43:42,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 170 transitions, 2052 flow [2024-06-27 19:43:42,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:43:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:43:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 19:43:42,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 19:43:42,320 INFO L175 Difference]: Start difference. First operand has 215 places, 160 transitions, 1926 flow. Second operand 8 states and 184 transitions. [2024-06-27 19:43:42,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 170 transitions, 2052 flow [2024-06-27 19:43:42,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 170 transitions, 1887 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-27 19:43:42,362 INFO L231 Difference]: Finished difference. Result has 210 places, 146 transitions, 1656 flow [2024-06-27 19:43:42,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1656, PETRI_PLACES=210, PETRI_TRANSITIONS=146} [2024-06-27 19:43:42,362 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 172 predicate places. [2024-06-27 19:43:42,362 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 146 transitions, 1656 flow [2024-06-27 19:43:42,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 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 19:43:42,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:42,363 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] [2024-06-27 19:43:42,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:43:42,363 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:42,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:42,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1480168156, now seen corresponding path program 1 times [2024-06-27 19:43:42,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:42,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134172761] [2024-06-27 19:43:42,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:42,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:42,425 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 19:43:42,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:42,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134172761] [2024-06-27 19:43:42,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134172761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:42,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:42,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:43:42,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492249775] [2024-06-27 19:43:42,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:42,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:42,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:42,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:42,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 19:43:42,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 146 transitions, 1656 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 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 19:43:42,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:42,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 19:43:42,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:42,648 INFO L124 PetriNetUnfolderBase]: 502/1217 cut-off events. [2024-06-27 19:43:42,648 INFO L125 PetriNetUnfolderBase]: For 14040/14043 co-relation queries the response was YES. [2024-06-27 19:43:42,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5412 conditions, 1217 events. 502/1217 cut-off events. For 14040/14043 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7990 event pairs, 141 based on Foata normal form. 16/1213 useless extension candidates. Maximal degree in co-relation 5319. Up to 276 conditions per place. [2024-06-27 19:43:42,655 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 54 selfloop transitions, 53 changer transitions 0/157 dead transitions. [2024-06-27 19:43:42,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 157 transitions, 1835 flow [2024-06-27 19:43:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:43:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:43:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 19:43:42,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-06-27 19:43:42,656 INFO L175 Difference]: Start difference. First operand has 210 places, 146 transitions, 1656 flow. Second operand 9 states and 201 transitions. [2024-06-27 19:43:42,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 157 transitions, 1835 flow [2024-06-27 19:43:42,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 157 transitions, 1732 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:43:42,693 INFO L231 Difference]: Finished difference. Result has 208 places, 132 transitions, 1550 flow [2024-06-27 19:43:42,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1550, PETRI_PLACES=208, PETRI_TRANSITIONS=132} [2024-06-27 19:43:42,693 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 170 predicate places. [2024-06-27 19:43:42,693 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 132 transitions, 1550 flow [2024-06-27 19:43:42,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 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 19:43:42,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:42,694 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] [2024-06-27 19:43:42,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:43:42,694 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:42,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2101767415, now seen corresponding path program 1 times [2024-06-27 19:43:42,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:42,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922078792] [2024-06-27 19:43:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:42,842 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 19:43:42,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:42,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922078792] [2024-06-27 19:43:42,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922078792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:42,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:42,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:42,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674072388] [2024-06-27 19:43:42,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:42,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:42,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:42,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:42,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:42,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:42,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 132 transitions, 1550 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:42,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:42,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:42,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:43,161 INFO L124 PetriNetUnfolderBase]: 710/1505 cut-off events. [2024-06-27 19:43:43,161 INFO L125 PetriNetUnfolderBase]: For 29153/29156 co-relation queries the response was YES. [2024-06-27 19:43:43,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7291 conditions, 1505 events. 710/1505 cut-off events. For 29153/29156 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9188 event pairs, 220 based on Foata normal form. 4/1501 useless extension candidates. Maximal degree in co-relation 7199. Up to 1062 conditions per place. [2024-06-27 19:43:43,171 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 133 selfloop transitions, 34 changer transitions 0/174 dead transitions. [2024-06-27 19:43:43,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 174 transitions, 2125 flow [2024-06-27 19:43:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:43:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:43:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-27 19:43:43,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44490644490644493 [2024-06-27 19:43:43,172 INFO L175 Difference]: Start difference. First operand has 208 places, 132 transitions, 1550 flow. Second operand 13 states and 214 transitions. [2024-06-27 19:43:43,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 174 transitions, 2125 flow [2024-06-27 19:43:43,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 174 transitions, 2046 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 19:43:43,218 INFO L231 Difference]: Finished difference. Result has 217 places, 136 transitions, 1600 flow [2024-06-27 19:43:43,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1600, PETRI_PLACES=217, PETRI_TRANSITIONS=136} [2024-06-27 19:43:43,218 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 179 predicate places. [2024-06-27 19:43:43,218 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 136 transitions, 1600 flow [2024-06-27 19:43:43,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:43,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:43,219 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] [2024-06-27 19:43:43,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:43:43,219 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:43,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:43,219 INFO L85 PathProgramCache]: Analyzing trace with hash -89116483, now seen corresponding path program 2 times [2024-06-27 19:43:43,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:43,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756323921] [2024-06-27 19:43:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:43,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:43,371 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 19:43:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756323921] [2024-06-27 19:43:43,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756323921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:43,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:43,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:43,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786753328] [2024-06-27 19:43:43,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:43,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:43,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:43,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:43,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 136 transitions, 1600 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:43,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:43,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:43,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:43,733 INFO L124 PetriNetUnfolderBase]: 778/1643 cut-off events. [2024-06-27 19:43:43,733 INFO L125 PetriNetUnfolderBase]: For 39575/39578 co-relation queries the response was YES. [2024-06-27 19:43:43,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8424 conditions, 1643 events. 778/1643 cut-off events. For 39575/39578 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10192 event pairs, 227 based on Foata normal form. 4/1639 useless extension candidates. Maximal degree in co-relation 8329. Up to 987 conditions per place. [2024-06-27 19:43:43,743 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 148 selfloop transitions, 40 changer transitions 0/195 dead transitions. [2024-06-27 19:43:43,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 195 transitions, 2506 flow [2024-06-27 19:43:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 19:43:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 19:43:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 267 transitions. [2024-06-27 19:43:43,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510135135135135 [2024-06-27 19:43:43,745 INFO L175 Difference]: Start difference. First operand has 217 places, 136 transitions, 1600 flow. Second operand 16 states and 267 transitions. [2024-06-27 19:43:43,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 195 transitions, 2506 flow [2024-06-27 19:43:43,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 195 transitions, 2431 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 19:43:43,800 INFO L231 Difference]: Finished difference. Result has 232 places, 143 transitions, 1726 flow [2024-06-27 19:43:43,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1726, PETRI_PLACES=232, PETRI_TRANSITIONS=143} [2024-06-27 19:43:43,801 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 194 predicate places. [2024-06-27 19:43:43,801 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 143 transitions, 1726 flow [2024-06-27 19:43:43,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:43,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:43,801 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] [2024-06-27 19:43:43,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:43:43,803 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:43,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:43,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1763750101, now seen corresponding path program 3 times [2024-06-27 19:43:43,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:43,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929468396] [2024-06-27 19:43:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:43,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:43,943 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 19:43:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:43,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929468396] [2024-06-27 19:43:43,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929468396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:43,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:43,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:43,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275501972] [2024-06-27 19:43:43,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:43,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:43,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:43,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:43,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 143 transitions, 1726 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:43,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:43,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:43,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:44,283 INFO L124 PetriNetUnfolderBase]: 780/1655 cut-off events. [2024-06-27 19:43:44,283 INFO L125 PetriNetUnfolderBase]: For 41713/41716 co-relation queries the response was YES. [2024-06-27 19:43:44,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8603 conditions, 1655 events. 780/1655 cut-off events. For 41713/41716 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10302 event pairs, 233 based on Foata normal form. 4/1651 useless extension candidates. Maximal degree in co-relation 8504. Up to 987 conditions per place. [2024-06-27 19:43:44,293 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 141 selfloop transitions, 39 changer transitions 0/187 dead transitions. [2024-06-27 19:43:44,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 187 transitions, 2386 flow [2024-06-27 19:43:44,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:43:44,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:43:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 222 transitions. [2024-06-27 19:43:44,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 19:43:44,294 INFO L175 Difference]: Start difference. First operand has 232 places, 143 transitions, 1726 flow. Second operand 13 states and 222 transitions. [2024-06-27 19:43:44,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 187 transitions, 2386 flow [2024-06-27 19:43:44,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 187 transitions, 2281 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 19:43:44,388 INFO L231 Difference]: Finished difference. Result has 240 places, 146 transitions, 1746 flow [2024-06-27 19:43:44,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1746, PETRI_PLACES=240, PETRI_TRANSITIONS=146} [2024-06-27 19:43:44,388 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 202 predicate places. [2024-06-27 19:43:44,388 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 146 transitions, 1746 flow [2024-06-27 19:43:44,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:44,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:44,389 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] [2024-06-27 19:43:44,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:43:44,389 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:44,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash -524168713, now seen corresponding path program 4 times [2024-06-27 19:43:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:44,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143317130] [2024-06-27 19:43:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:44,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:44,522 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 19:43:44,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:44,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143317130] [2024-06-27 19:43:44,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143317130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:44,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:44,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:44,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641225677] [2024-06-27 19:43:44,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:44,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:44,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:44,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:44,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:44,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:44,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 146 transitions, 1746 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:44,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:44,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:44,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:44,879 INFO L124 PetriNetUnfolderBase]: 774/1645 cut-off events. [2024-06-27 19:43:44,879 INFO L125 PetriNetUnfolderBase]: For 41403/41406 co-relation queries the response was YES. [2024-06-27 19:43:44,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8492 conditions, 1645 events. 774/1645 cut-off events. For 41403/41406 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10255 event pairs, 230 based on Foata normal form. 4/1641 useless extension candidates. Maximal degree in co-relation 8391. Up to 987 conditions per place. [2024-06-27 19:43:44,889 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 146 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-27 19:43:44,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 193 transitions, 2418 flow [2024-06-27 19:43:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 19:43:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 19:43:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 251 transitions. [2024-06-27 19:43:44,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45225225225225224 [2024-06-27 19:43:44,890 INFO L175 Difference]: Start difference. First operand has 240 places, 146 transitions, 1746 flow. Second operand 15 states and 251 transitions. [2024-06-27 19:43:44,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 193 transitions, 2418 flow [2024-06-27 19:43:44,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 193 transitions, 2328 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:43:44,962 INFO L231 Difference]: Finished difference. Result has 247 places, 146 transitions, 1740 flow [2024-06-27 19:43:44,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1740, PETRI_PLACES=247, PETRI_TRANSITIONS=146} [2024-06-27 19:43:44,963 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 209 predicate places. [2024-06-27 19:43:44,963 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 146 transitions, 1740 flow [2024-06-27 19:43:44,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:44,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:44,963 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] [2024-06-27 19:43:44,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:43:44,963 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:44,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1462968243, now seen corresponding path program 5 times [2024-06-27 19:43:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13970783] [2024-06-27 19:43:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:45,074 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 19:43:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13970783] [2024-06-27 19:43:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13970783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:45,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:45,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888857794] [2024-06-27 19:43:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:45,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:45,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:45,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:45,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 146 transitions, 1740 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 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 19:43:45,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:45,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:45,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:45,380 INFO L124 PetriNetUnfolderBase]: 776/1652 cut-off events. [2024-06-27 19:43:45,380 INFO L125 PetriNetUnfolderBase]: For 43778/43781 co-relation queries the response was YES. [2024-06-27 19:43:45,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8523 conditions, 1652 events. 776/1652 cut-off events. For 43778/43781 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10295 event pairs, 183 based on Foata normal form. 4/1646 useless extension candidates. Maximal degree in co-relation 8421. Up to 513 conditions per place. [2024-06-27 19:43:45,391 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 128 selfloop transitions, 50 changer transitions 0/185 dead transitions. [2024-06-27 19:43:45,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 185 transitions, 2444 flow [2024-06-27 19:43:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:43:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:43:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 19:43:45,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 19:43:45,392 INFO L175 Difference]: Start difference. First operand has 247 places, 146 transitions, 1740 flow. Second operand 12 states and 205 transitions. [2024-06-27 19:43:45,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 185 transitions, 2444 flow [2024-06-27 19:43:45,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 185 transitions, 2356 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 19:43:45,467 INFO L231 Difference]: Finished difference. Result has 248 places, 147 transitions, 1784 flow [2024-06-27 19:43:45,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1784, PETRI_PLACES=248, PETRI_TRANSITIONS=147} [2024-06-27 19:43:45,468 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 210 predicate places. [2024-06-27 19:43:45,468 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 147 transitions, 1784 flow [2024-06-27 19:43:45,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 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 19:43:45,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:45,468 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] [2024-06-27 19:43:45,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:43:45,469 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:45,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:45,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1029384493, now seen corresponding path program 6 times [2024-06-27 19:43:45,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:45,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885864326] [2024-06-27 19:43:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:45,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:45,606 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 19:43:45,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:45,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885864326] [2024-06-27 19:43:45,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885864326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:45,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:45,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:45,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831087877] [2024-06-27 19:43:45,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:45,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:45,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:45,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:45,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 147 transitions, 1784 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:45,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:45,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:45,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:46,000 INFO L124 PetriNetUnfolderBase]: 836/1781 cut-off events. [2024-06-27 19:43:46,001 INFO L125 PetriNetUnfolderBase]: For 49053/49056 co-relation queries the response was YES. [2024-06-27 19:43:46,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 1781 events. 836/1781 cut-off events. For 49053/49056 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11410 event pairs, 224 based on Foata normal form. 4/1775 useless extension candidates. Maximal degree in co-relation 9216. Up to 725 conditions per place. [2024-06-27 19:43:46,013 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 141 selfloop transitions, 63 changer transitions 0/211 dead transitions. [2024-06-27 19:43:46,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 211 transitions, 2868 flow [2024-06-27 19:43:46,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 19:43:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 19:43:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 279 transitions. [2024-06-27 19:43:46,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435612082670906 [2024-06-27 19:43:46,014 INFO L175 Difference]: Start difference. First operand has 248 places, 147 transitions, 1784 flow. Second operand 17 states and 279 transitions. [2024-06-27 19:43:46,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 211 transitions, 2868 flow [2024-06-27 19:43:46,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 211 transitions, 2720 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:43:46,095 INFO L231 Difference]: Finished difference. Result has 259 places, 156 transitions, 1908 flow [2024-06-27 19:43:46,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1649, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1908, PETRI_PLACES=259, PETRI_TRANSITIONS=156} [2024-06-27 19:43:46,095 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 221 predicate places. [2024-06-27 19:43:46,096 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 156 transitions, 1908 flow [2024-06-27 19:43:46,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:46,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:46,096 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] [2024-06-27 19:43:46,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:43:46,096 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:46,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:46,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1922144921, now seen corresponding path program 7 times [2024-06-27 19:43:46,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:46,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931231212] [2024-06-27 19:43:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:46,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:46,245 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 19:43:46,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:46,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931231212] [2024-06-27 19:43:46,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931231212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:46,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:46,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:46,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177884109] [2024-06-27 19:43:46,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:46,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:46,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:46,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:46,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:46,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:46,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 156 transitions, 1908 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:46,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:46,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:46,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:46,679 INFO L124 PetriNetUnfolderBase]: 859/1830 cut-off events. [2024-06-27 19:43:46,679 INFO L125 PetriNetUnfolderBase]: For 56031/56034 co-relation queries the response was YES. [2024-06-27 19:43:46,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9844 conditions, 1830 events. 859/1830 cut-off events. For 56031/56034 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11800 event pairs, 232 based on Foata normal form. 4/1824 useless extension candidates. Maximal degree in co-relation 9744. Up to 821 conditions per place. [2024-06-27 19:43:46,691 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 136 selfloop transitions, 71 changer transitions 0/214 dead transitions. [2024-06-27 19:43:46,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 214 transitions, 2869 flow [2024-06-27 19:43:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 19:43:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 19:43:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 266 transitions. [2024-06-27 19:43:46,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-27 19:43:46,694 INFO L175 Difference]: Start difference. First operand has 259 places, 156 transitions, 1908 flow. Second operand 16 states and 266 transitions. [2024-06-27 19:43:46,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 214 transitions, 2869 flow [2024-06-27 19:43:46,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 214 transitions, 2694 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 19:43:46,786 INFO L231 Difference]: Finished difference. Result has 267 places, 161 transitions, 1954 flow [2024-06-27 19:43:46,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1954, PETRI_PLACES=267, PETRI_TRANSITIONS=161} [2024-06-27 19:43:46,787 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 229 predicate places. [2024-06-27 19:43:46,787 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 161 transitions, 1954 flow [2024-06-27 19:43:46,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:46,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:46,787 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] [2024-06-27 19:43:46,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:43:46,788 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:46,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:46,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1473722155, now seen corresponding path program 8 times [2024-06-27 19:43:46,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:46,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711572226] [2024-06-27 19:43:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:46,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:46,916 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 19:43:46,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:46,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711572226] [2024-06-27 19:43:46,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711572226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:46,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:46,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955784053] [2024-06-27 19:43:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:46,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:46,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:46,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:46,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:46,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 161 transitions, 1954 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:46,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:46,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:46,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:47,296 INFO L124 PetriNetUnfolderBase]: 868/1851 cut-off events. [2024-06-27 19:43:47,296 INFO L125 PetriNetUnfolderBase]: For 59525/59528 co-relation queries the response was YES. [2024-06-27 19:43:47,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9886 conditions, 1851 events. 868/1851 cut-off events. For 59525/59528 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11935 event pairs, 243 based on Foata normal form. 4/1845 useless extension candidates. Maximal degree in co-relation 9790. Up to 725 conditions per place. [2024-06-27 19:43:47,308 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 148 selfloop transitions, 61 changer transitions 0/216 dead transitions. [2024-06-27 19:43:47,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 216 transitions, 2891 flow [2024-06-27 19:43:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 19:43:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 19:43:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 259 transitions. [2024-06-27 19:43:47,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 19:43:47,309 INFO L175 Difference]: Start difference. First operand has 267 places, 161 transitions, 1954 flow. Second operand 15 states and 259 transitions. [2024-06-27 19:43:47,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 216 transitions, 2891 flow [2024-06-27 19:43:47,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 216 transitions, 2766 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 19:43:47,428 INFO L231 Difference]: Finished difference. Result has 276 places, 164 transitions, 2001 flow [2024-06-27 19:43:47,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2001, PETRI_PLACES=276, PETRI_TRANSITIONS=164} [2024-06-27 19:43:47,428 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 238 predicate places. [2024-06-27 19:43:47,429 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 164 transitions, 2001 flow [2024-06-27 19:43:47,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:47,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:47,429 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] [2024-06-27 19:43:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:43:47,429 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:47,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash -346479061, now seen corresponding path program 9 times [2024-06-27 19:43:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154647645] [2024-06-27 19:43:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:47,559 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 19:43:47,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:47,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154647645] [2024-06-27 19:43:47,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154647645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:47,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:47,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:47,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867727847] [2024-06-27 19:43:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:47,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:47,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:47,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 164 transitions, 2001 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:47,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:47,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:47,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:47,935 INFO L124 PetriNetUnfolderBase]: 870/1863 cut-off events. [2024-06-27 19:43:47,936 INFO L125 PetriNetUnfolderBase]: For 62668/62671 co-relation queries the response was YES. [2024-06-27 19:43:47,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 1863 events. 870/1863 cut-off events. For 62668/62671 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12071 event pairs, 240 based on Foata normal form. 4/1857 useless extension candidates. Maximal degree in co-relation 9864. Up to 860 conditions per place. [2024-06-27 19:43:47,948 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 135 selfloop transitions, 71 changer transitions 0/213 dead transitions. [2024-06-27 19:43:47,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 213 transitions, 2821 flow [2024-06-27 19:43:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 19:43:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 19:43:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 241 transitions. [2024-06-27 19:43:47,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46525096525096526 [2024-06-27 19:43:47,949 INFO L175 Difference]: Start difference. First operand has 276 places, 164 transitions, 2001 flow. Second operand 14 states and 241 transitions. [2024-06-27 19:43:47,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 213 transitions, 2821 flow [2024-06-27 19:43:48,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 213 transitions, 2698 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 19:43:48,057 INFO L231 Difference]: Finished difference. Result has 281 places, 164 transitions, 2024 flow [2024-06-27 19:43:48,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2024, PETRI_PLACES=281, PETRI_TRANSITIONS=164} [2024-06-27 19:43:48,057 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 243 predicate places. [2024-06-27 19:43:48,057 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 164 transitions, 2024 flow [2024-06-27 19:43:48,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:48,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:48,058 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] [2024-06-27 19:43:48,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:43:48,058 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:48,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1474316801, now seen corresponding path program 10 times [2024-06-27 19:43:48,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:48,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254281460] [2024-06-27 19:43:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:48,181 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 19:43:48,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:48,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254281460] [2024-06-27 19:43:48,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254281460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:48,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:48,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497099039] [2024-06-27 19:43:48,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:48,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:48,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:48,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:48,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:48,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 164 transitions, 2024 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:48,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:48,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:48,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:48,603 INFO L124 PetriNetUnfolderBase]: 864/1851 cut-off events. [2024-06-27 19:43:48,603 INFO L125 PetriNetUnfolderBase]: For 62514/62517 co-relation queries the response was YES. [2024-06-27 19:43:48,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9864 conditions, 1851 events. 864/1851 cut-off events. For 62514/62517 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11953 event pairs, 241 based on Foata normal form. 4/1845 useless extension candidates. Maximal degree in co-relation 9765. Up to 725 conditions per place. [2024-06-27 19:43:48,613 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 152 selfloop transitions, 62 changer transitions 0/221 dead transitions. [2024-06-27 19:43:48,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 221 transitions, 2894 flow [2024-06-27 19:43:48,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 19:43:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 19:43:48,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 287 transitions. [2024-06-27 19:43:48,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562798092209857 [2024-06-27 19:43:48,614 INFO L175 Difference]: Start difference. First operand has 281 places, 164 transitions, 2024 flow. Second operand 17 states and 287 transitions. [2024-06-27 19:43:48,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 221 transitions, 2894 flow [2024-06-27 19:43:48,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 221 transitions, 2724 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-27 19:43:48,721 INFO L231 Difference]: Finished difference. Result has 286 places, 164 transitions, 1982 flow [2024-06-27 19:43:48,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1982, PETRI_PLACES=286, PETRI_TRANSITIONS=164} [2024-06-27 19:43:48,722 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 248 predicate places. [2024-06-27 19:43:48,722 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 164 transitions, 1982 flow [2024-06-27 19:43:48,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:48,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:48,722 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] [2024-06-27 19:43:48,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:43:48,722 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:48,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1902078521, now seen corresponding path program 11 times [2024-06-27 19:43:48,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:48,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593578221] [2024-06-27 19:43:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:48,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:48,859 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 19:43:48,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:48,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593578221] [2024-06-27 19:43:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593578221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:48,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658919599] [2024-06-27 19:43:48,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:48,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:48,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 164 transitions, 1982 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 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 19:43:48,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:48,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:48,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:49,172 INFO L124 PetriNetUnfolderBase]: 858/1841 cut-off events. [2024-06-27 19:43:49,172 INFO L125 PetriNetUnfolderBase]: For 61908/61911 co-relation queries the response was YES. [2024-06-27 19:43:49,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9639 conditions, 1841 events. 858/1841 cut-off events. For 61908/61911 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11852 event pairs, 342 based on Foata normal form. 4/1837 useless extension candidates. Maximal degree in co-relation 9540. Up to 1322 conditions per place. [2024-06-27 19:43:49,184 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 150 selfloop transitions, 37 changer transitions 0/194 dead transitions. [2024-06-27 19:43:49,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 194 transitions, 2544 flow [2024-06-27 19:43:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:43:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:43:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 19:43:49,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 19:43:49,186 INFO L175 Difference]: Start difference. First operand has 286 places, 164 transitions, 1982 flow. Second operand 10 states and 175 transitions. [2024-06-27 19:43:49,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 194 transitions, 2544 flow [2024-06-27 19:43:49,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 194 transitions, 2402 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-27 19:43:49,307 INFO L231 Difference]: Finished difference. Result has 282 places, 164 transitions, 1920 flow [2024-06-27 19:43:49,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1920, PETRI_PLACES=282, PETRI_TRANSITIONS=164} [2024-06-27 19:43:49,307 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 244 predicate places. [2024-06-27 19:43:49,307 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 164 transitions, 1920 flow [2024-06-27 19:43:49,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 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 19:43:49,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:49,308 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] [2024-06-27 19:43:49,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:43:49,308 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:49,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash -227383645, now seen corresponding path program 1 times [2024-06-27 19:43:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:49,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155428618] [2024-06-27 19:43:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:49,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:49,438 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 19:43:49,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155428618] [2024-06-27 19:43:49,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155428618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:49,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:49,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:49,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908940181] [2024-06-27 19:43:49,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:49,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:49,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:49,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:49,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:49,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:49,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 164 transitions, 1920 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:49,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:49,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:49,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:49,843 INFO L124 PetriNetUnfolderBase]: 874/1877 cut-off events. [2024-06-27 19:43:49,843 INFO L125 PetriNetUnfolderBase]: For 68134/68137 co-relation queries the response was YES. [2024-06-27 19:43:49,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9858 conditions, 1877 events. 874/1877 cut-off events. For 68134/68137 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12176 event pairs, 362 based on Foata normal form. 4/1873 useless extension candidates. Maximal degree in co-relation 9761. Up to 1434 conditions per place. [2024-06-27 19:43:49,855 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 162 selfloop transitions, 33 changer transitions 0/202 dead transitions. [2024-06-27 19:43:49,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 202 transitions, 2543 flow [2024-06-27 19:43:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:43:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:43:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-06-27 19:43:49,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446985446985447 [2024-06-27 19:43:49,856 INFO L175 Difference]: Start difference. First operand has 282 places, 164 transitions, 1920 flow. Second operand 13 states and 215 transitions. [2024-06-27 19:43:49,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 202 transitions, 2543 flow [2024-06-27 19:43:49,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 202 transitions, 2405 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-27 19:43:49,967 INFO L231 Difference]: Finished difference. Result has 282 places, 165 transitions, 1867 flow [2024-06-27 19:43:49,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1867, PETRI_PLACES=282, PETRI_TRANSITIONS=165} [2024-06-27 19:43:49,967 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 244 predicate places. [2024-06-27 19:43:49,968 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 165 transitions, 1867 flow [2024-06-27 19:43:49,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:49,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:49,968 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] [2024-06-27 19:43:49,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:43:49,968 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:49,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash -253754909, now seen corresponding path program 2 times [2024-06-27 19:43:49,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:49,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647620101] [2024-06-27 19:43:49,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:49,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:50,099 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 19:43:50,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:50,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647620101] [2024-06-27 19:43:50,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647620101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:50,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:50,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:50,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308809724] [2024-06-27 19:43:50,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:50,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:50,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:50,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:50,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 165 transitions, 1867 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:50,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:50,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:50,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:50,484 INFO L124 PetriNetUnfolderBase]: 912/1959 cut-off events. [2024-06-27 19:43:50,485 INFO L125 PetriNetUnfolderBase]: For 75347/75350 co-relation queries the response was YES. [2024-06-27 19:43:50,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10416 conditions, 1959 events. 912/1959 cut-off events. For 75347/75350 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12806 event pairs, 361 based on Foata normal form. 4/1955 useless extension candidates. Maximal degree in co-relation 10322. Up to 1327 conditions per place. [2024-06-27 19:43:50,496 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 169 selfloop transitions, 40 changer transitions 0/216 dead transitions. [2024-06-27 19:43:50,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 216 transitions, 2739 flow [2024-06-27 19:43:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 19:43:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 19:43:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 274 transitions. [2024-06-27 19:43:50,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356120826709062 [2024-06-27 19:43:50,497 INFO L175 Difference]: Start difference. First operand has 282 places, 165 transitions, 1867 flow. Second operand 17 states and 274 transitions. [2024-06-27 19:43:50,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 216 transitions, 2739 flow [2024-06-27 19:43:50,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 216 transitions, 2670 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:43:50,613 INFO L231 Difference]: Finished difference. Result has 290 places, 167 transitions, 1915 flow [2024-06-27 19:43:50,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1915, PETRI_PLACES=290, PETRI_TRANSITIONS=167} [2024-06-27 19:43:50,614 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 252 predicate places. [2024-06-27 19:43:50,614 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 167 transitions, 1915 flow [2024-06-27 19:43:50,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:50,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:50,615 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] [2024-06-27 19:43:50,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:43:50,615 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:50,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:50,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1323263037, now seen corresponding path program 3 times [2024-06-27 19:43:50,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:50,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975406330] [2024-06-27 19:43:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:50,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:50,743 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 19:43:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975406330] [2024-06-27 19:43:50,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975406330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:50,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:50,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38108909] [2024-06-27 19:43:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:50,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:50,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 167 transitions, 1915 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:50,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:50,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:50,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:51,215 INFO L124 PetriNetUnfolderBase]: 928/1995 cut-off events. [2024-06-27 19:43:51,215 INFO L125 PetriNetUnfolderBase]: For 82647/82650 co-relation queries the response was YES. [2024-06-27 19:43:51,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10856 conditions, 1995 events. 928/1995 cut-off events. For 82647/82650 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13089 event pairs, 361 based on Foata normal form. 4/1991 useless extension candidates. Maximal degree in co-relation 10760. Up to 1327 conditions per place. [2024-06-27 19:43:51,227 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 176 selfloop transitions, 41 changer transitions 0/224 dead transitions. [2024-06-27 19:43:51,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 224 transitions, 2838 flow [2024-06-27 19:43:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 19:43:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 19:43:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 303 transitions. [2024-06-27 19:43:51,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310099573257468 [2024-06-27 19:43:51,228 INFO L175 Difference]: Start difference. First operand has 290 places, 167 transitions, 1915 flow. Second operand 19 states and 303 transitions. [2024-06-27 19:43:51,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 224 transitions, 2838 flow [2024-06-27 19:43:51,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 224 transitions, 2733 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-27 19:43:51,356 INFO L231 Difference]: Finished difference. Result has 298 places, 170 transitions, 1953 flow [2024-06-27 19:43:51,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1953, PETRI_PLACES=298, PETRI_TRANSITIONS=170} [2024-06-27 19:43:51,357 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 260 predicate places. [2024-06-27 19:43:51,357 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 170 transitions, 1953 flow [2024-06-27 19:43:51,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:51,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:51,357 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] [2024-06-27 19:43:51,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:43:51,357 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:51,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1785604801, now seen corresponding path program 4 times [2024-06-27 19:43:51,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:51,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192284523] [2024-06-27 19:43:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:51,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:51,479 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 19:43:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192284523] [2024-06-27 19:43:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192284523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:51,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:51,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228888771] [2024-06-27 19:43:51,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:51,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:51,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:51,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 170 transitions, 1953 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:51,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:51,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:51,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:51,915 INFO L124 PetriNetUnfolderBase]: 922/1985 cut-off events. [2024-06-27 19:43:51,915 INFO L125 PetriNetUnfolderBase]: For 82297/82300 co-relation queries the response was YES. [2024-06-27 19:43:51,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10699 conditions, 1985 events. 922/1985 cut-off events. For 82297/82300 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13030 event pairs, 362 based on Foata normal form. 4/1981 useless extension candidates. Maximal degree in co-relation 10600. Up to 1327 conditions per place. [2024-06-27 19:43:51,928 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 176 selfloop transitions, 42 changer transitions 0/225 dead transitions. [2024-06-27 19:43:51,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 225 transitions, 2760 flow [2024-06-27 19:43:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 19:43:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 19:43:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 305 transitions. [2024-06-27 19:43:51,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43385490753911804 [2024-06-27 19:43:51,934 INFO L175 Difference]: Start difference. First operand has 298 places, 170 transitions, 1953 flow. Second operand 19 states and 305 transitions. [2024-06-27 19:43:51,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 225 transitions, 2760 flow [2024-06-27 19:43:52,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 225 transitions, 2663 flow, removed 12 selfloop flow, removed 14 redundant places. [2024-06-27 19:43:52,089 INFO L231 Difference]: Finished difference. Result has 304 places, 172 transitions, 1973 flow [2024-06-27 19:43:52,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1973, PETRI_PLACES=304, PETRI_TRANSITIONS=172} [2024-06-27 19:43:52,090 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 266 predicate places. [2024-06-27 19:43:52,090 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 172 transitions, 1973 flow [2024-06-27 19:43:52,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:52,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:52,090 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] [2024-06-27 19:43:52,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:43:52,090 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:52,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:52,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1379465217, now seen corresponding path program 5 times [2024-06-27 19:43:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:52,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665928842] [2024-06-27 19:43:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:52,197 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 19:43:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665928842] [2024-06-27 19:43:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665928842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:52,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:43:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820366151] [2024-06-27 19:43:52,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:43:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:43:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:43:52,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:52,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 172 transitions, 1973 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 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 19:43:52,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:52,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:52,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:52,558 INFO L124 PetriNetUnfolderBase]: 916/1973 cut-off events. [2024-06-27 19:43:52,558 INFO L125 PetriNetUnfolderBase]: For 81611/81614 co-relation queries the response was YES. [2024-06-27 19:43:52,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10547 conditions, 1973 events. 916/1973 cut-off events. For 81611/81614 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12934 event pairs, 272 based on Foata normal form. 4/1969 useless extension candidates. Maximal degree in co-relation 10446. Up to 885 conditions per place. [2024-06-27 19:43:52,572 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 154 selfloop transitions, 52 changer transitions 0/213 dead transitions. [2024-06-27 19:43:52,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 213 transitions, 2805 flow [2024-06-27 19:43:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:43:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:43:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-27 19:43:52,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 19:43:52,573 INFO L175 Difference]: Start difference. First operand has 304 places, 172 transitions, 1973 flow. Second operand 12 states and 208 transitions. [2024-06-27 19:43:52,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 213 transitions, 2805 flow [2024-06-27 19:43:52,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 213 transitions, 2714 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-27 19:43:52,722 INFO L231 Difference]: Finished difference. Result has 303 places, 173 transitions, 2024 flow [2024-06-27 19:43:52,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2024, PETRI_PLACES=303, PETRI_TRANSITIONS=173} [2024-06-27 19:43:52,723 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 265 predicate places. [2024-06-27 19:43:52,723 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 173 transitions, 2024 flow [2024-06-27 19:43:52,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 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 19:43:52,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:52,723 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] [2024-06-27 19:43:52,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:43:52,723 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:52,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:52,724 INFO L85 PathProgramCache]: Analyzing trace with hash -441061377, now seen corresponding path program 6 times [2024-06-27 19:43:52,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:52,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548801805] [2024-06-27 19:43:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:52,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:52,858 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 19:43:52,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548801805] [2024-06-27 19:43:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548801805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:52,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:52,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820557886] [2024-06-27 19:43:52,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:52,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:52,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:52,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:52,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 173 transitions, 2024 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:52,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:52,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:52,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:53,283 INFO L124 PetriNetUnfolderBase]: 932/2011 cut-off events. [2024-06-27 19:43:53,283 INFO L125 PetriNetUnfolderBase]: For 90119/90122 co-relation queries the response was YES. [2024-06-27 19:43:53,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11010 conditions, 2011 events. 932/2011 cut-off events. For 90119/90122 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13239 event pairs, 318 based on Foata normal form. 4/2007 useless extension candidates. Maximal degree in co-relation 10908. Up to 1172 conditions per place. [2024-06-27 19:43:53,296 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 164 selfloop transitions, 53 changer transitions 0/224 dead transitions. [2024-06-27 19:43:53,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 224 transitions, 3012 flow [2024-06-27 19:43:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 19:43:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 19:43:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 275 transitions. [2024-06-27 19:43:53,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43720190779014306 [2024-06-27 19:43:53,297 INFO L175 Difference]: Start difference. First operand has 303 places, 173 transitions, 2024 flow. Second operand 17 states and 275 transitions. [2024-06-27 19:43:53,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 224 transitions, 3012 flow [2024-06-27 19:43:53,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 224 transitions, 2896 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 19:43:53,474 INFO L231 Difference]: Finished difference. Result has 312 places, 175 transitions, 2063 flow [2024-06-27 19:43:53,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1920, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2063, PETRI_PLACES=312, PETRI_TRANSITIONS=175} [2024-06-27 19:43:53,474 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 274 predicate places. [2024-06-27 19:43:53,474 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 175 transitions, 2063 flow [2024-06-27 19:43:53,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:53,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:53,474 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] [2024-06-27 19:43:53,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:43:53,475 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:53,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1377268063, now seen corresponding path program 7 times [2024-06-27 19:43:53,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:53,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935381729] [2024-06-27 19:43:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:53,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:53,624 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 19:43:53,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:53,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935381729] [2024-06-27 19:43:53,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935381729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:53,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:53,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:53,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448552100] [2024-06-27 19:43:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:53,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:53,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:53,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:53,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 175 transitions, 2063 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:53,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:53,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:53,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:54,098 INFO L124 PetriNetUnfolderBase]: 955/2060 cut-off events. [2024-06-27 19:43:54,098 INFO L125 PetriNetUnfolderBase]: For 99677/99680 co-relation queries the response was YES. [2024-06-27 19:43:54,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 2060 events. 955/2060 cut-off events. For 99677/99680 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13658 event pairs, 327 based on Foata normal form. 4/2056 useless extension candidates. Maximal degree in co-relation 11461. Up to 1172 conditions per place. [2024-06-27 19:43:54,112 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 170 selfloop transitions, 55 changer transitions 0/232 dead transitions. [2024-06-27 19:43:54,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 232 transitions, 3096 flow [2024-06-27 19:43:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 19:43:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 19:43:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 305 transitions. [2024-06-27 19:43:54,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43385490753911804 [2024-06-27 19:43:54,113 INFO L175 Difference]: Start difference. First operand has 312 places, 175 transitions, 2063 flow. Second operand 19 states and 305 transitions. [2024-06-27 19:43:54,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 232 transitions, 3096 flow [2024-06-27 19:43:54,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 232 transitions, 2922 flow, removed 18 selfloop flow, removed 16 redundant places. [2024-06-27 19:43:54,341 INFO L231 Difference]: Finished difference. Result has 315 places, 178 transitions, 2050 flow [2024-06-27 19:43:54,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2050, PETRI_PLACES=315, PETRI_TRANSITIONS=178} [2024-06-27 19:43:54,341 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 277 predicate places. [2024-06-27 19:43:54,341 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 178 transitions, 2050 flow [2024-06-27 19:43:54,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:54,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:54,342 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] [2024-06-27 19:43:54,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:43:54,342 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:54,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1662053091, now seen corresponding path program 8 times [2024-06-27 19:43:54,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:54,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504692159] [2024-06-27 19:43:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:54,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:54,490 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 19:43:54,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:54,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504692159] [2024-06-27 19:43:54,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504692159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:54,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:54,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832183658] [2024-06-27 19:43:54,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:54,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:54,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:54,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:54,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:54,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 178 transitions, 2050 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:54,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:54,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:54,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:54,918 INFO L124 PetriNetUnfolderBase]: 971/2096 cut-off events. [2024-06-27 19:43:54,918 INFO L125 PetriNetUnfolderBase]: For 107705/107708 co-relation queries the response was YES. [2024-06-27 19:43:54,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 2096 events. 971/2096 cut-off events. For 107705/107708 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13970 event pairs, 336 based on Foata normal form. 4/2092 useless extension candidates. Maximal degree in co-relation 11740. Up to 1281 conditions per place. [2024-06-27 19:43:54,933 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 158 selfloop transitions, 59 changer transitions 0/224 dead transitions. [2024-06-27 19:43:54,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 224 transitions, 2938 flow [2024-06-27 19:43:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 19:43:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 19:43:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 258 transitions. [2024-06-27 19:43:54,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2024-06-27 19:43:54,934 INFO L175 Difference]: Start difference. First operand has 315 places, 178 transitions, 2050 flow. Second operand 16 states and 258 transitions. [2024-06-27 19:43:54,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 224 transitions, 2938 flow [2024-06-27 19:43:55,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 224 transitions, 2798 flow, removed 8 selfloop flow, removed 17 redundant places. [2024-06-27 19:43:55,114 INFO L231 Difference]: Finished difference. Result has 315 places, 180 transitions, 2066 flow [2024-06-27 19:43:55,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1911, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2066, PETRI_PLACES=315, PETRI_TRANSITIONS=180} [2024-06-27 19:43:55,114 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 277 predicate places. [2024-06-27 19:43:55,114 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 180 transitions, 2066 flow [2024-06-27 19:43:55,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:55,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:55,115 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] [2024-06-27 19:43:55,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:43:55,115 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:55,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1201734111, now seen corresponding path program 9 times [2024-06-27 19:43:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:55,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214278932] [2024-06-27 19:43:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:55,252 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 19:43:55,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:55,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214278932] [2024-06-27 19:43:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214278932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:55,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:55,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:55,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906291890] [2024-06-27 19:43:55,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:55,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:55,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:55,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:55,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 180 transitions, 2066 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:55,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:55,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:55,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:55,754 INFO L124 PetriNetUnfolderBase]: 980/2119 cut-off events. [2024-06-27 19:43:55,755 INFO L125 PetriNetUnfolderBase]: For 114541/114544 co-relation queries the response was YES. [2024-06-27 19:43:55,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12081 conditions, 2119 events. 980/2119 cut-off events. For 114541/114544 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14160 event pairs, 329 based on Foata normal form. 4/2115 useless extension candidates. Maximal degree in co-relation 11980. Up to 1172 conditions per place. [2024-06-27 19:43:55,766 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 177 selfloop transitions, 56 changer transitions 0/240 dead transitions. [2024-06-27 19:43:55,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 240 transitions, 3028 flow [2024-06-27 19:43:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-27 19:43:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-27 19:43:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 333 transitions. [2024-06-27 19:43:55,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 19:43:55,767 INFO L175 Difference]: Start difference. First operand has 315 places, 180 transitions, 2066 flow. Second operand 21 states and 333 transitions. [2024-06-27 19:43:55,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 240 transitions, 3028 flow [2024-06-27 19:43:55,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 240 transitions, 2925 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 19:43:55,972 INFO L231 Difference]: Finished difference. Result has 324 places, 181 transitions, 2101 flow [2024-06-27 19:43:55,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2101, PETRI_PLACES=324, PETRI_TRANSITIONS=181} [2024-06-27 19:43:55,972 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 286 predicate places. [2024-06-27 19:43:55,972 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 181 transitions, 2101 flow [2024-06-27 19:43:55,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:55,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:55,973 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] [2024-06-27 19:43:55,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:43:55,973 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:55,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:55,973 INFO L85 PathProgramCache]: Analyzing trace with hash -891303323, now seen corresponding path program 10 times [2024-06-27 19:43:55,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:55,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484417012] [2024-06-27 19:43:55,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:55,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:56,123 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 19:43:56,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:56,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484417012] [2024-06-27 19:43:56,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484417012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:56,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:56,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:56,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597530666] [2024-06-27 19:43:56,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:56,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:56,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:56,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:56,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:56,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:56,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 181 transitions, 2101 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:56,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:56,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:56,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:56,555 INFO L124 PetriNetUnfolderBase]: 974/2109 cut-off events. [2024-06-27 19:43:56,555 INFO L125 PetriNetUnfolderBase]: For 114702/114705 co-relation queries the response was YES. [2024-06-27 19:43:56,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11940 conditions, 2109 events. 974/2109 cut-off events. For 114702/114705 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14140 event pairs, 334 based on Foata normal form. 4/2105 useless extension candidates. Maximal degree in co-relation 11838. Up to 1300 conditions per place. [2024-06-27 19:43:56,571 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 157 selfloop transitions, 59 changer transitions 0/223 dead transitions. [2024-06-27 19:43:56,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 223 transitions, 2767 flow [2024-06-27 19:43:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 19:43:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 19:43:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 256 transitions. [2024-06-27 19:43:56,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 19:43:56,573 INFO L175 Difference]: Start difference. First operand has 324 places, 181 transitions, 2101 flow. Second operand 16 states and 256 transitions. [2024-06-27 19:43:56,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 223 transitions, 2767 flow [2024-06-27 19:43:56,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 223 transitions, 2602 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-06-27 19:43:56,753 INFO L231 Difference]: Finished difference. Result has 322 places, 181 transitions, 2058 flow [2024-06-27 19:43:56,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2058, PETRI_PLACES=322, PETRI_TRANSITIONS=181} [2024-06-27 19:43:56,753 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 284 predicate places. [2024-06-27 19:43:56,753 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 181 transitions, 2058 flow [2024-06-27 19:43:56,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 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 19:43:56,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:56,754 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] [2024-06-27 19:43:56,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:43:56,754 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:56,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash 217306266, now seen corresponding path program 1 times [2024-06-27 19:43:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:56,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858863237] [2024-06-27 19:43:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:56,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:56,901 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 19:43:56,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:56,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858863237] [2024-06-27 19:43:56,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858863237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:56,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:56,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:43:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688106047] [2024-06-27 19:43:56,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:56,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:43:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:43:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:43:56,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:56,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 181 transitions, 2058 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:43:56,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:56,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:56,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:57,321 INFO L124 PetriNetUnfolderBase]: 958/2075 cut-off events. [2024-06-27 19:43:57,321 INFO L125 PetriNetUnfolderBase]: For 113997/114000 co-relation queries the response was YES. [2024-06-27 19:43:57,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11062 conditions, 2075 events. 958/2075 cut-off events. For 113997/114000 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13854 event pairs, 346 based on Foata normal form. 16/2083 useless extension candidates. Maximal degree in co-relation 10960. Up to 1395 conditions per place. [2024-06-27 19:43:57,334 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 139 selfloop transitions, 23 changer transitions 48/217 dead transitions. [2024-06-27 19:43:57,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 217 transitions, 2598 flow [2024-06-27 19:43:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:43:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:43:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-27 19:43:57,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44490644490644493 [2024-06-27 19:43:57,335 INFO L175 Difference]: Start difference. First operand has 322 places, 181 transitions, 2058 flow. Second operand 13 states and 214 transitions. [2024-06-27 19:43:57,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 217 transitions, 2598 flow [2024-06-27 19:43:57,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 217 transitions, 2468 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-27 19:43:57,533 INFO L231 Difference]: Finished difference. Result has 320 places, 150 transitions, 1606 flow [2024-06-27 19:43:57,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1606, PETRI_PLACES=320, PETRI_TRANSITIONS=150} [2024-06-27 19:43:57,533 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 282 predicate places. [2024-06-27 19:43:57,533 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 150 transitions, 1606 flow [2024-06-27 19:43:57,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:43:57,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:57,533 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] [2024-06-27 19:43:57,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:43:57,534 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:57,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:57,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1706335924, now seen corresponding path program 2 times [2024-06-27 19:43:57,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:57,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662511064] [2024-06-27 19:43:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:57,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:57,666 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 19:43:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662511064] [2024-06-27 19:43:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662511064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:57,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:57,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157634455] [2024-06-27 19:43:57,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:57,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:57,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:57,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:57,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 150 transitions, 1606 flow. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 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 19:43:57,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:57,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:57,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:58,000 INFO L124 PetriNetUnfolderBase]: 767/1669 cut-off events. [2024-06-27 19:43:58,000 INFO L125 PetriNetUnfolderBase]: For 86995/86998 co-relation queries the response was YES. [2024-06-27 19:43:58,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9006 conditions, 1669 events. 767/1669 cut-off events. For 86995/86998 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10475 event pairs, 247 based on Foata normal form. 4/1666 useless extension candidates. Maximal degree in co-relation 8904. Up to 761 conditions per place. [2024-06-27 19:43:58,011 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 124 selfloop transitions, 36 changer transitions 20/187 dead transitions. [2024-06-27 19:43:58,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 187 transitions, 2184 flow [2024-06-27 19:43:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:43:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:43:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-06-27 19:43:58,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446985446985447 [2024-06-27 19:43:58,016 INFO L175 Difference]: Start difference. First operand has 320 places, 150 transitions, 1606 flow. Second operand 13 states and 215 transitions. [2024-06-27 19:43:58,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 187 transitions, 2184 flow [2024-06-27 19:43:58,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 187 transitions, 1995 flow, removed 19 selfloop flow, removed 29 redundant places. [2024-06-27 19:43:58,172 INFO L231 Difference]: Finished difference. Result has 271 places, 144 transitions, 1463 flow [2024-06-27 19:43:58,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1463, PETRI_PLACES=271, PETRI_TRANSITIONS=144} [2024-06-27 19:43:58,172 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 233 predicate places. [2024-06-27 19:43:58,173 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 144 transitions, 1463 flow [2024-06-27 19:43:58,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 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 19:43:58,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:58,173 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] [2024-06-27 19:43:58,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:43:58,173 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:58,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1396064396, now seen corresponding path program 3 times [2024-06-27 19:43:58,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:58,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223597452] [2024-06-27 19:43:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:58,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:58,331 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 19:43:58,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:58,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223597452] [2024-06-27 19:43:58,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223597452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:58,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:58,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:43:58,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475772892] [2024-06-27 19:43:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:58,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:43:58,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:58,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:43:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:43:58,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:58,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 144 transitions, 1463 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:43:58,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:58,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:58,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:58,707 INFO L124 PetriNetUnfolderBase]: 715/1556 cut-off events. [2024-06-27 19:43:58,707 INFO L125 PetriNetUnfolderBase]: For 63811/63814 co-relation queries the response was YES. [2024-06-27 19:43:58,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7643 conditions, 1556 events. 715/1556 cut-off events. For 63811/63814 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9547 event pairs, 254 based on Foata normal form. 12/1562 useless extension candidates. Maximal degree in co-relation 7552. Up to 802 conditions per place. [2024-06-27 19:43:58,714 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 122 selfloop transitions, 29 changer transitions 31/189 dead transitions. [2024-06-27 19:43:58,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 189 transitions, 2065 flow [2024-06-27 19:43:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 19:43:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 19:43:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 246 transitions. [2024-06-27 19:43:58,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 19:43:58,715 INFO L175 Difference]: Start difference. First operand has 271 places, 144 transitions, 1463 flow. Second operand 15 states and 246 transitions. [2024-06-27 19:43:58,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 189 transitions, 2065 flow [2024-06-27 19:43:58,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 189 transitions, 1932 flow, removed 6 selfloop flow, removed 16 redundant places. [2024-06-27 19:43:58,802 INFO L231 Difference]: Finished difference. Result has 263 places, 126 transitions, 1244 flow [2024-06-27 19:43:58,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1244, PETRI_PLACES=263, PETRI_TRANSITIONS=126} [2024-06-27 19:43:58,803 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 225 predicate places. [2024-06-27 19:43:58,803 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 126 transitions, 1244 flow [2024-06-27 19:43:58,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:43:58,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:58,803 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] [2024-06-27 19:43:58,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:43:58,803 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:58,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash 593491994, now seen corresponding path program 4 times [2024-06-27 19:43:58,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:58,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692607164] [2024-06-27 19:43:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:58,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:58,937 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 19:43:58,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:58,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692607164] [2024-06-27 19:43:58,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692607164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:58,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:58,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:43:58,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204925210] [2024-06-27 19:43:58,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:58,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:43:58,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:58,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:43:58,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:43:58,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:58,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 126 transitions, 1244 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:43:58,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:58,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:58,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:59,266 INFO L124 PetriNetUnfolderBase]: 611/1334 cut-off events. [2024-06-27 19:43:59,266 INFO L125 PetriNetUnfolderBase]: For 46979/46982 co-relation queries the response was YES. [2024-06-27 19:43:59,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6359 conditions, 1334 events. 611/1334 cut-off events. For 46979/46982 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7835 event pairs, 236 based on Foata normal form. 8/1336 useless extension candidates. Maximal degree in co-relation 6272. Up to 802 conditions per place. [2024-06-27 19:43:59,274 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 96 selfloop transitions, 24 changer transitions 39/166 dead transitions. [2024-06-27 19:43:59,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 166 transitions, 1696 flow [2024-06-27 19:43:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:43:59,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:43:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-27 19:43:59,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44490644490644493 [2024-06-27 19:43:59,275 INFO L175 Difference]: Start difference. First operand has 263 places, 126 transitions, 1244 flow. Second operand 13 states and 214 transitions. [2024-06-27 19:43:59,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 166 transitions, 1696 flow [2024-06-27 19:43:59,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 166 transitions, 1579 flow, removed 7 selfloop flow, removed 24 redundant places. [2024-06-27 19:43:59,350 INFO L231 Difference]: Finished difference. Result has 233 places, 111 transitions, 1041 flow [2024-06-27 19:43:59,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1041, PETRI_PLACES=233, PETRI_TRANSITIONS=111} [2024-06-27 19:43:59,351 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 195 predicate places. [2024-06-27 19:43:59,351 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 111 transitions, 1041 flow [2024-06-27 19:43:59,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:43:59,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:59,351 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] [2024-06-27 19:43:59,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:43:59,351 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:59,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1101163992, now seen corresponding path program 5 times [2024-06-27 19:43:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:59,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646632917] [2024-06-27 19:43:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:59,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:59,487 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 19:43:59,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646632917] [2024-06-27 19:43:59,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646632917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:59,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:59,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:43:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593239917] [2024-06-27 19:43:59,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:59,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:43:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:43:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:43:59,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:43:59,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 111 transitions, 1041 flow. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 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 19:43:59,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:59,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:43:59,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:59,761 INFO L124 PetriNetUnfolderBase]: 523/1140 cut-off events. [2024-06-27 19:43:59,761 INFO L125 PetriNetUnfolderBase]: For 32261/32264 co-relation queries the response was YES. [2024-06-27 19:43:59,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5282 conditions, 1140 events. 523/1140 cut-off events. For 32261/32264 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6494 event pairs, 127 based on Foata normal form. 4/1138 useless extension candidates. Maximal degree in co-relation 5202. Up to 476 conditions per place. [2024-06-27 19:43:59,767 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 68 selfloop transitions, 19 changer transitions 39/133 dead transitions. [2024-06-27 19:43:59,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 133 transitions, 1363 flow [2024-06-27 19:43:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:43:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:43:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 19:43:59,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 19:43:59,768 INFO L175 Difference]: Start difference. First operand has 233 places, 111 transitions, 1041 flow. Second operand 10 states and 161 transitions. [2024-06-27 19:43:59,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 133 transitions, 1363 flow [2024-06-27 19:43:59,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 133 transitions, 1281 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-27 19:43:59,822 INFO L231 Difference]: Finished difference. Result has 203 places, 85 transitions, 721 flow [2024-06-27 19:43:59,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=721, PETRI_PLACES=203, PETRI_TRANSITIONS=85} [2024-06-27 19:43:59,822 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 165 predicate places. [2024-06-27 19:43:59,822 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 85 transitions, 721 flow [2024-06-27 19:43:59,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 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 19:43:59,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:59,823 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] [2024-06-27 19:43:59,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:43:59,823 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:59,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash 383844262, now seen corresponding path program 6 times [2024-06-27 19:43:59,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771323363] [2024-06-27 19:43:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:59,977 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 19:43:59,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:59,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771323363] [2024-06-27 19:43:59,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771323363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:59,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:59,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:43:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287631855] [2024-06-27 19:43:59,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:59,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:43:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:43:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:44:00,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:44:00,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 85 transitions, 721 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:44:00,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:00,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:44:00,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:00,251 INFO L124 PetriNetUnfolderBase]: 364/799 cut-off events. [2024-06-27 19:44:00,251 INFO L125 PetriNetUnfolderBase]: For 23157/23157 co-relation queries the response was YES. [2024-06-27 19:44:00,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 799 events. 364/799 cut-off events. For 23157/23157 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4267 event pairs, 105 based on Foata normal form. 16/812 useless extension candidates. Maximal degree in co-relation 3263. Up to 420 conditions per place. [2024-06-27 19:44:00,254 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 50 selfloop transitions, 7 changer transitions 48/112 dead transitions. [2024-06-27 19:44:00,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 112 transitions, 1007 flow [2024-06-27 19:44:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 19:44:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 19:44:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 217 transitions. [2024-06-27 19:44:00,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390990990990991 [2024-06-27 19:44:00,255 INFO L175 Difference]: Start difference. First operand has 203 places, 85 transitions, 721 flow. Second operand 15 states and 217 transitions. [2024-06-27 19:44:00,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 112 transitions, 1007 flow [2024-06-27 19:44:00,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 112 transitions, 847 flow, removed 16 selfloop flow, removed 34 redundant places. [2024-06-27 19:44:00,282 INFO L231 Difference]: Finished difference. Result has 160 places, 59 transitions, 394 flow [2024-06-27 19:44:00,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=394, PETRI_PLACES=160, PETRI_TRANSITIONS=59} [2024-06-27 19:44:00,282 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 122 predicate places. [2024-06-27 19:44:00,282 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 59 transitions, 394 flow [2024-06-27 19:44:00,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:44:00,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:00,283 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] [2024-06-27 19:44:00,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:44:00,283 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:00,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1068041086, now seen corresponding path program 7 times [2024-06-27 19:44:00,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:00,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317496436] [2024-06-27 19:44:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:00,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:00,458 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 19:44:00,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:00,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317496436] [2024-06-27 19:44:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317496436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:44:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910670399] [2024-06-27 19:44:00,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:00,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:44:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:44:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:44:00,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:44:00,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 59 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:44:00,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:00,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:44:00,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:00,684 INFO L124 PetriNetUnfolderBase]: 209/468 cut-off events. [2024-06-27 19:44:00,684 INFO L125 PetriNetUnfolderBase]: For 9828/9828 co-relation queries the response was YES. [2024-06-27 19:44:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 468 events. 209/468 cut-off events. For 9828/9828 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2098 event pairs, 27 based on Foata normal form. 4/471 useless extension candidates. Maximal degree in co-relation 1845. Up to 129 conditions per place. [2024-06-27 19:44:00,686 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 34 selfloop transitions, 18 changer transitions 27/86 dead transitions. [2024-06-27 19:44:00,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 86 transitions, 616 flow [2024-06-27 19:44:00,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 19:44:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 19:44:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 224 transitions. [2024-06-27 19:44:00,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-06-27 19:44:00,687 INFO L175 Difference]: Start difference. First operand has 160 places, 59 transitions, 394 flow. Second operand 16 states and 224 transitions. [2024-06-27 19:44:00,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 86 transitions, 616 flow [2024-06-27 19:44:00,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 86 transitions, 536 flow, removed 18 selfloop flow, removed 25 redundant places. [2024-06-27 19:44:00,694 INFO L231 Difference]: Finished difference. Result has 114 places, 48 transitions, 285 flow [2024-06-27 19:44:00,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=285, PETRI_PLACES=114, PETRI_TRANSITIONS=48} [2024-06-27 19:44:00,695 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2024-06-27 19:44:00,695 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 48 transitions, 285 flow [2024-06-27 19:44:00,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:44:00,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:00,695 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] [2024-06-27 19:44:00,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:44:00,695 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:00,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1478854718, now seen corresponding path program 8 times [2024-06-27 19:44:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:00,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884634582] [2024-06-27 19:44:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:00,826 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 19:44:00,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884634582] [2024-06-27 19:44:00,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884634582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:00,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:00,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:44:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958535319] [2024-06-27 19:44:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:00,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:44:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:44:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:44:00,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:44:00,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 48 transitions, 285 flow. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 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 19:44:00,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:00,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:44:00,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:00,988 INFO L124 PetriNetUnfolderBase]: 148/339 cut-off events. [2024-06-27 19:44:00,988 INFO L125 PetriNetUnfolderBase]: For 3330/3330 co-relation queries the response was YES. [2024-06-27 19:44:00,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 339 events. 148/339 cut-off events. For 3330/3330 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1308 event pairs, 20 based on Foata normal form. 4/342 useless extension candidates. Maximal degree in co-relation 1177. Up to 96 conditions per place. [2024-06-27 19:44:00,989 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 32 selfloop transitions, 12 changer transitions 20/71 dead transitions. [2024-06-27 19:44:00,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 71 transitions, 461 flow [2024-06-27 19:44:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 19:44:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 19:44:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 196 transitions. [2024-06-27 19:44:00,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-06-27 19:44:00,990 INFO L175 Difference]: Start difference. First operand has 114 places, 48 transitions, 285 flow. Second operand 14 states and 196 transitions. [2024-06-27 19:44:00,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 71 transitions, 461 flow [2024-06-27 19:44:00,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 71 transitions, 413 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-27 19:44:00,993 INFO L231 Difference]: Finished difference. Result has 98 places, 41 transitions, 228 flow [2024-06-27 19:44:00,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=228, PETRI_PLACES=98, PETRI_TRANSITIONS=41} [2024-06-27 19:44:00,993 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 60 predicate places. [2024-06-27 19:44:00,993 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 41 transitions, 228 flow [2024-06-27 19:44:00,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 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 19:44:00,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:00,994 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] [2024-06-27 19:44:00,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:44:00,994 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:00,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1341812798, now seen corresponding path program 9 times [2024-06-27 19:44:00,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:00,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608682414] [2024-06-27 19:44:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:00,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:01,142 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 19:44:01,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:01,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608682414] [2024-06-27 19:44:01,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608682414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:01,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:01,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:44:01,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67716344] [2024-06-27 19:44:01,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:01,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:44:01,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:44:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:44:01,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 19:44:01,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 41 transitions, 228 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:44:01,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:01,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 19:44:01,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:01,351 INFO L124 PetriNetUnfolderBase]: 101/238 cut-off events. [2024-06-27 19:44:01,351 INFO L125 PetriNetUnfolderBase]: For 1453/1453 co-relation queries the response was YES. [2024-06-27 19:44:01,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 238 events. 101/238 cut-off events. For 1453/1453 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 817 event pairs, 5 based on Foata normal form. 12/249 useless extension candidates. Maximal degree in co-relation 683. Up to 72 conditions per place. [2024-06-27 19:44:01,351 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2024-06-27 19:44:01,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 57 transitions, 330 flow [2024-06-27 19:44:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 19:44:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 19:44:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 184 transitions. [2024-06-27 19:44:01,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3552123552123552 [2024-06-27 19:44:01,352 INFO L175 Difference]: Start difference. First operand has 98 places, 41 transitions, 228 flow. Second operand 14 states and 184 transitions. [2024-06-27 19:44:01,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 57 transitions, 330 flow [2024-06-27 19:44:01,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 57 transitions, 274 flow, removed 0 selfloop flow, removed 22 redundant places. [2024-06-27 19:44:01,353 INFO L231 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2024-06-27 19:44:01,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2024-06-27 19:44:01,353 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2024-06-27 19:44:01,353 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2024-06-27 19:44:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 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 19:44:01,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 19:44:01,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 19:44:01,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 19:44:01,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 19:44:01,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:44:01,356 INFO L445 BasicCegarLoop]: Path program histogram: [11, 10, 10, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:01,358 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 19:44:01,358 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 19:44:01,361 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 19:44:01,361 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 19:44:01,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 07:44:01 BasicIcfg [2024-06-27 19:44:01,363 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 19:44:01,363 INFO L158 Benchmark]: Toolchain (without parser) took 37083.19ms. Allocated memory was 178.3MB in the beginning and 1.0GB in the end (delta: 838.9MB). Free memory was 122.3MB in the beginning and 648.9MB in the end (delta: -526.6MB). Peak memory consumption was 314.0MB. Max. memory is 16.1GB. [2024-06-27 19:44:01,363 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:44:01,363 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:44:01,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.37ms. Allocated memory is still 178.3MB. Free memory was 121.6MB in the beginning and 107.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-27 19:44:01,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.21ms. Allocated memory is still 178.3MB. Free memory was 106.9MB in the beginning and 105.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 19:44:01,364 INFO L158 Benchmark]: Boogie Preprocessor took 54.16ms. Allocated memory is still 178.3MB. Free memory was 105.5MB in the beginning and 103.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 19:44:01,364 INFO L158 Benchmark]: RCFGBuilder took 456.34ms. Allocated memory is still 178.3MB. Free memory was 103.5MB in the beginning and 79.0MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-27 19:44:01,364 INFO L158 Benchmark]: TraceAbstraction took 36214.02ms. Allocated memory was 178.3MB in the beginning and 1.0GB in the end (delta: 838.9MB). Free memory was 78.3MB in the beginning and 648.9MB in the end (delta: -570.7MB). Peak memory consumption was 270.0MB. Max. memory is 16.1GB. [2024-06-27 19:44:01,366 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.37ms. Allocated memory is still 178.3MB. Free memory was 121.6MB in the beginning and 107.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.21ms. Allocated memory is still 178.3MB. Free memory was 106.9MB in the beginning and 105.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.16ms. Allocated memory is still 178.3MB. Free memory was 105.5MB in the beginning and 103.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.34ms. Allocated memory is still 178.3MB. Free memory was 103.5MB in the beginning and 79.0MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 36214.02ms. Allocated memory was 178.3MB in the beginning and 1.0GB in the end (delta: 838.9MB). Free memory was 78.3MB in the beginning and 648.9MB in the end (delta: -570.7MB). Peak memory consumption was 270.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 111]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 112]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 36.1s, OverallIterations: 70, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 26.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5886 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5221 mSDsluCounter, 1472 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1007 mSDsCounter, 941 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19103 IncrementalHoareTripleChecker+Invalid, 20044 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 941 mSolverCounterUnsat, 465 mSDtfsCounter, 19103 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 911 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 903 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2101occurred in iteration=60, InterpolantAutomatonStates: 808, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 1575 NumberOfCodeBlocks, 1575 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 1505 ConstructedInterpolants, 0 QuantifiedInterpolants, 17518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 70 InterpolantComputations, 70 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 19:44:01,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE