./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.2024-05-21_14-57-05.files/protection/test-easy6.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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.2024-05-21_14-57-05.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-cde23df-m [2024-06-14 11:44:33,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:44:33,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:44:33,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:44:33,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:44:33,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:44:33,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:44:33,694 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:44:33,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:44:33,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:44:33,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:44:33,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:44:33,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:44:33,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:44:33,701 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:44:33,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:44:33,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:44:33,701 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:44:33,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:44:33,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:44:33,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:44:33,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:44:33,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:44:33,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:44:33,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:44:33,704 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:44:33,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:44:33,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:44:33,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:44:33,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:44:33,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:44:33,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:44:33,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:44:33,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:44:33,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:44:33,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:44:33,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:44:33,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:44:33,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:44:33,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:44:33,707 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:44:33,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:44:33,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:44:33,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:44:33,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:44:33,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:44:33,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:44:33,953 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:44:33,953 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:44:33,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-06-14 11:44:34,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:44:35,101 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:44:35,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-06-14 11:44:35,108 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e90f39c3/30e467a047ac465c854db5813a80a6a8/FLAG9a0e041b2 [2024-06-14 11:44:35,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e90f39c3/30e467a047ac465c854db5813a80a6a8 [2024-06-14 11:44:35,131 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:44:35,132 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:44:35,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/test-easy6.wvr.yml/witness.yml [2024-06-14 11:44:35,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:44:35,243 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:44:35,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:44:35,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:44:35,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:44:35,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:44:35" (1/2) ... [2024-06-14 11:44:35,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e42bc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:44:35, skipping insertion in model container [2024-06-14 11:44:35,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:44:35" (1/2) ... [2024-06-14 11:44:35,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ff6fbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:44:35, skipping insertion in model container [2024-06-14 11:44:35,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:44:35" (2/2) ... [2024-06-14 11:44:35,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e42bc53 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35, skipping insertion in model container [2024-06-14 11:44:35,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:44:35" (2/2) ... [2024-06-14 11:44:35,254 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:44:35,273 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:44:35,277 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) [2024-06-14 11:44:35,277 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) [2024-06-14 11:44:35,277 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:44:35,278 INFO L106 edCorrectnessWitness]: ghost_update [L110-L110] multithreaded = 1; [2024-06-14 11:44:35,308 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:44:35,444 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:44:35,457 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:44:35,515 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:44:35,527 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:44:35,528 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35 WrapperNode [2024-06-14 11:44:35,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:44:35,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:44:35,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:44:35,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:44:35,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,555 INFO L138 Inliner]: procedures = 20, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2024-06-14 11:44:35,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:44:35,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:44:35,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:44:35,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:44:35,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,575 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]. [2024-06-14 11:44:35,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:44:35,583 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:44:35,583 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:44:35,583 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:44:35,584 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (1/1) ... [2024-06-14 11:44:35,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:44:35,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:44:35,605 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) [2024-06-14 11:44:35,628 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 [2024-06-14 11:44:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:44:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-14 11:44:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-14 11:44:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-14 11:44:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-14 11:44:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:44:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:44:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:44:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:44:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:44:35,701 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:44:35,810 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:44:35,812 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:44:35,961 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:44:35,961 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:44:36,042 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:44:36,042 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:44:36,043 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:44:36 BoogieIcfgContainer [2024-06-14 11:44:36,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:44:36,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:44:36,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:44:36,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:44:36,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:44:35" (1/4) ... [2024-06-14 11:44:36,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439a0596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:44:36, skipping insertion in model container [2024-06-14 11:44:36,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:44:35" (2/4) ... [2024-06-14 11:44:36,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439a0596 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:44:36, skipping insertion in model container [2024-06-14 11:44:36,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:44:35" (3/4) ... [2024-06-14 11:44:36,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439a0596 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:44:36, skipping insertion in model container [2024-06-14 11:44:36,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:44:36" (4/4) ... [2024-06-14 11:44:36,049 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2024-06-14 11:44:36,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:44:36,062 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:44:36,062 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:44:36,125 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-14 11:44:36,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 38 transitions, 90 flow [2024-06-14 11:44:36,182 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2024-06-14 11:44:36,183 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-14 11:44:36,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 0/36 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. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-14 11:44:36,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 38 transitions, 90 flow [2024-06-14 11:44:36,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 32 transitions, 70 flow [2024-06-14 11:44:36,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:44:36,198 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;@13690956, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:44:36,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:44:36,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:44:36,201 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:44:36,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:44:36,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:36,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:44:36,202 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)] === [2024-06-14 11:44:36,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash -867461194, now seen corresponding path program 1 times [2024-06-14 11:44:36,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:36,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430089311] [2024-06-14 11:44:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:36,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:36,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430089311] [2024-06-14 11:44:36,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430089311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:36,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:36,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:44:36,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992443262] [2024-06-14 11:44:36,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:36,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:44:36,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:44:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:44:36,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-14 11:44:36,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:36,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:36,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-14 11:44:36,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:36,640 INFO L124 PetriNetUnfolderBase]: 157/371 cut-off events. [2024-06-14 11:44:36,640 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-14 11:44:36,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 371 events. 157/371 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1720 event pairs, 65 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 666. Up to 276 conditions per place. [2024-06-14 11:44:36,646 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 25 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-06-14 11:44:36,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 145 flow [2024-06-14 11:44:36,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:44:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:44:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-06-14 11:44:36,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-06-14 11:44:36,656 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 70 flow. Second operand 3 states and 75 transitions. [2024-06-14 11:44:36,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 145 flow [2024-06-14 11:44:36,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:44:36,660 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 89 flow [2024-06-14 11:44:36,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-06-14 11:44:36,664 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-06-14 11:44:36,664 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 89 flow [2024-06-14 11:44:36,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:36,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:36,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:44:36,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:44:36,665 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)] === [2024-06-14 11:44:36,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash 282532372, now seen corresponding path program 1 times [2024-06-14 11:44:36,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:36,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625965307] [2024-06-14 11:44:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:36,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:36,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:36,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625965307] [2024-06-14 11:44:36,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625965307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:36,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:36,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:44:36,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027293249] [2024-06-14 11:44:36,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:36,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:44:36,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:36,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:44:36,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:44:36,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-14 11:44:36,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:36,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:36,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-14 11:44:36,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:36,884 INFO L124 PetriNetUnfolderBase]: 150/357 cut-off events. [2024-06-14 11:44:36,885 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-06-14 11:44:36,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 357 events. 150/357 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1666 event pairs, 64 based on Foata normal form. 4/342 useless extension candidates. Maximal degree in co-relation 720. Up to 246 conditions per place. [2024-06-14 11:44:36,887 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 26 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-14 11:44:36,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 169 flow [2024-06-14 11:44:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:44:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:44:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-14 11:44:36,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-14 11:44:36,889 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 89 flow. Second operand 3 states and 76 transitions. [2024-06-14 11:44:36,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 169 flow [2024-06-14 11:44:36,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:44:36,891 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 112 flow [2024-06-14 11:44:36,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-14 11:44:36,891 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-06-14 11:44:36,892 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 112 flow [2024-06-14 11:44:36,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:36,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:36,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:44:36,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:44:36,893 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)] === [2024-06-14 11:44:36,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash 570315830, now seen corresponding path program 1 times [2024-06-14 11:44:36,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:36,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091729343] [2024-06-14 11:44:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:36,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:37,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:37,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091729343] [2024-06-14 11:44:37,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091729343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:37,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:37,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:44:37,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109724875] [2024-06-14 11:44:37,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:37,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:44:37,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:44:37,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:44:37,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-14 11:44:37,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:37,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:37,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-14 11:44:37,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:37,128 INFO L124 PetriNetUnfolderBase]: 227/488 cut-off events. [2024-06-14 11:44:37,128 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2024-06-14 11:44:37,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 488 events. 227/488 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2257 event pairs, 87 based on Foata normal form. 15/492 useless extension candidates. Maximal degree in co-relation 1089. Up to 326 conditions per place. [2024-06-14 11:44:37,132 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-06-14 11:44:37,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 249 flow [2024-06-14 11:44:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:44:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:44:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-06-14 11:44:37,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-06-14 11:44:37,137 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 112 flow. Second operand 4 states and 94 transitions. [2024-06-14 11:44:37,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 249 flow [2024-06-14 11:44:37,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:44:37,140 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 150 flow [2024-06-14 11:44:37,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-06-14 11:44:37,142 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-06-14 11:44:37,142 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 150 flow [2024-06-14 11:44:37,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:37,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:37,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:44:37,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:44:37,143 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)] === [2024-06-14 11:44:37,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:37,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1756960972, now seen corresponding path program 1 times [2024-06-14 11:44:37,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:37,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171240652] [2024-06-14 11:44:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:37,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:37,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:37,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171240652] [2024-06-14 11:44:37,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171240652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:37,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:37,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:44:37,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229058787] [2024-06-14 11:44:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:37,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:44:37,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:44:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:44:37,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-14 11:44:37,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:37,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:37,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-14 11:44:37,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:37,464 INFO L124 PetriNetUnfolderBase]: 291/599 cut-off events. [2024-06-14 11:44:37,464 INFO L125 PetriNetUnfolderBase]: For 477/485 co-relation queries the response was YES. [2024-06-14 11:44:37,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 599 events. 291/599 cut-off events. For 477/485 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2900 event pairs, 90 based on Foata normal form. 12/594 useless extension candidates. Maximal degree in co-relation 1512. Up to 327 conditions per place. [2024-06-14 11:44:37,467 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 48 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-06-14 11:44:37,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 344 flow [2024-06-14 11:44:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:44:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:44:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-14 11:44:37,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-14 11:44:37,469 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 150 flow. Second operand 5 states and 114 transitions. [2024-06-14 11:44:37,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 344 flow [2024-06-14 11:44:37,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 336 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-14 11:44:37,471 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 201 flow [2024-06-14 11:44:37,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-14 11:44:37,472 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-06-14 11:44:37,472 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 201 flow [2024-06-14 11:44:37,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:37,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:37,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:44:37,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:44:37,473 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)] === [2024-06-14 11:44:37,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:37,473 INFO L85 PathProgramCache]: Analyzing trace with hash 588095202, now seen corresponding path program 1 times [2024-06-14 11:44:37,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:37,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990276305] [2024-06-14 11:44:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:37,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990276305] [2024-06-14 11:44:37,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990276305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:37,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:37,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:44:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469865557] [2024-06-14 11:44:37,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:44:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:44:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:44:37,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-14 11:44:37,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 201 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:37,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:37,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-14 11:44:37,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:37,780 INFO L124 PetriNetUnfolderBase]: 282/597 cut-off events. [2024-06-14 11:44:37,781 INFO L125 PetriNetUnfolderBase]: For 828/846 co-relation queries the response was YES. [2024-06-14 11:44:37,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 597 events. 282/597 cut-off events. For 828/846 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2877 event pairs, 80 based on Foata normal form. 16/603 useless extension candidates. Maximal degree in co-relation 1590. Up to 380 conditions per place. [2024-06-14 11:44:37,783 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 45 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-14 11:44:37,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 374 flow [2024-06-14 11:44:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:44:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:44:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-14 11:44:37,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-06-14 11:44:37,785 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 201 flow. Second operand 5 states and 102 transitions. [2024-06-14 11:44:37,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 374 flow [2024-06-14 11:44:37,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 364 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-14 11:44:37,788 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 254 flow [2024-06-14 11:44:37,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-14 11:44:37,789 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2024-06-14 11:44:37,789 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 254 flow [2024-06-14 11:44:37,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:37,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:37,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:44:37,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:44:37,790 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)] === [2024-06-14 11:44:37,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash -517314893, now seen corresponding path program 1 times [2024-06-14 11:44:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:37,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657204493] [2024-06-14 11:44:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:37,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:37,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657204493] [2024-06-14 11:44:37,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657204493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:37,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:37,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:44:37,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385754638] [2024-06-14 11:44:37,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:37,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:44:37,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:44:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:44:37,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-14 11:44:37,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:37,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:37,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-14 11:44:37,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:38,034 INFO L124 PetriNetUnfolderBase]: 323/648 cut-off events. [2024-06-14 11:44:38,034 INFO L125 PetriNetUnfolderBase]: For 1335/1347 co-relation queries the response was YES. [2024-06-14 11:44:38,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1912 conditions, 648 events. 323/648 cut-off events. For 1335/1347 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3062 event pairs, 115 based on Foata normal form. 12/644 useless extension candidates. Maximal degree in co-relation 1885. Up to 475 conditions per place. [2024-06-14 11:44:38,037 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 50 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2024-06-14 11:44:38,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 424 flow [2024-06-14 11:44:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:44:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:44:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-14 11:44:38,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-06-14 11:44:38,038 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 254 flow. Second operand 5 states and 102 transitions. [2024-06-14 11:44:38,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 424 flow [2024-06-14 11:44:38,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 402 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 11:44:38,041 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 284 flow [2024-06-14 11:44:38,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-14 11:44:38,042 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2024-06-14 11:44:38,042 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 284 flow [2024-06-14 11:44:38,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:38,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:44:38,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:44:38,043 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)] === [2024-06-14 11:44:38,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash -280116719, now seen corresponding path program 1 times [2024-06-14 11:44:38,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:38,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279931982] [2024-06-14 11:44:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:38,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:38,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:38,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279931982] [2024-06-14 11:44:38,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279931982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:38,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:38,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:44:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491309944] [2024-06-14 11:44:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:38,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:44:38,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:44:38,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:44:38,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-14 11:44:38,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:38,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-14 11:44:38,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:38,244 INFO L124 PetriNetUnfolderBase]: 332/669 cut-off events. [2024-06-14 11:44:38,245 INFO L125 PetriNetUnfolderBase]: For 1509/1509 co-relation queries the response was YES. [2024-06-14 11:44:38,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 669 events. 332/669 cut-off events. For 1509/1509 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3168 event pairs, 156 based on Foata normal form. 2/669 useless extension candidates. Maximal degree in co-relation 2024. Up to 554 conditions per place. [2024-06-14 11:44:38,248 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 48 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2024-06-14 11:44:38,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 454 flow [2024-06-14 11:44:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:44:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:44:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-06-14 11:44:38,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-14 11:44:38,249 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 284 flow. Second operand 5 states and 96 transitions. [2024-06-14 11:44:38,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 454 flow [2024-06-14 11:44:38,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 433 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-14 11:44:38,252 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 306 flow [2024-06-14 11:44:38,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-14 11:44:38,253 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2024-06-14 11:44:38,253 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 306 flow [2024-06-14 11:44:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:38,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:44:38,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:44:38,254 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)] === [2024-06-14 11:44:38,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1817935644, now seen corresponding path program 1 times [2024-06-14 11:44:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:38,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850846150] [2024-06-14 11:44:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:38,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:38,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:38,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850846150] [2024-06-14 11:44:38,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850846150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:38,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:38,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:44:38,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885425207] [2024-06-14 11:44:38,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:44:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:44:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:44:38,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:38,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:38,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:38,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:38,498 INFO L124 PetriNetUnfolderBase]: 382/735 cut-off events. [2024-06-14 11:44:38,498 INFO L125 PetriNetUnfolderBase]: For 2066/2066 co-relation queries the response was YES. [2024-06-14 11:44:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 735 events. 382/735 cut-off events. For 2066/2066 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3383 event pairs, 190 based on Foata normal form. 4/737 useless extension candidates. Maximal degree in co-relation 2372. Up to 638 conditions per place. [2024-06-14 11:44:38,502 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 51 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2024-06-14 11:44:38,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 466 flow [2024-06-14 11:44:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:44:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:44:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-14 11:44:38,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-14 11:44:38,503 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 306 flow. Second operand 5 states and 92 transitions. [2024-06-14 11:44:38,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 466 flow [2024-06-14 11:44:38,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 456 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-14 11:44:38,507 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 338 flow [2024-06-14 11:44:38,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-14 11:44:38,508 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2024-06-14 11:44:38,508 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 338 flow [2024-06-14 11:44:38,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:38,508 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] [2024-06-14 11:44:38,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:44:38,509 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)] === [2024-06-14 11:44:38,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash -64482128, now seen corresponding path program 1 times [2024-06-14 11:44:38,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:38,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975455203] [2024-06-14 11:44:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:38,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:38,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:38,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975455203] [2024-06-14 11:44:38,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975455203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:38,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:38,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:44:38,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306619246] [2024-06-14 11:44:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:38,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:44:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:38,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:44:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:44:38,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-06-14 11:44:38,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:38,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-06-14 11:44:38,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:38,568 INFO L124 PetriNetUnfolderBase]: 155/411 cut-off events. [2024-06-14 11:44:38,569 INFO L125 PetriNetUnfolderBase]: For 791/815 co-relation queries the response was YES. [2024-06-14 11:44:38,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182 conditions, 411 events. 155/411 cut-off events. For 791/815 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2165 event pairs, 103 based on Foata normal form. 12/409 useless extension candidates. Maximal degree in co-relation 1147. Up to 203 conditions per place. [2024-06-14 11:44:38,571 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 17 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-06-14 11:44:38,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 61 transitions, 382 flow [2024-06-14 11:44:38,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:44:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:44:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-14 11:44:38,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2024-06-14 11:44:38,572 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 338 flow. Second operand 3 states and 77 transitions. [2024-06-14 11:44:38,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 61 transitions, 382 flow [2024-06-14 11:44:38,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 61 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-14 11:44:38,575 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 338 flow [2024-06-14 11:44:38,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-06-14 11:44:38,575 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2024-06-14 11:44:38,576 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 338 flow [2024-06-14 11:44:38,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:38,576 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] [2024-06-14 11:44:38,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:44:38,576 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)] === [2024-06-14 11:44:38,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2123972557, now seen corresponding path program 1 times [2024-06-14 11:44:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108342934] [2024-06-14 11:44:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:38,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:38,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:38,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108342934] [2024-06-14 11:44:38,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108342934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:38,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:38,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:44:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890170355] [2024-06-14 11:44:38,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:38,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:44:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:44:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:44:38,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-06-14 11:44:38,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:38,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-06-14 11:44:38,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:38,638 INFO L124 PetriNetUnfolderBase]: 158/440 cut-off events. [2024-06-14 11:44:38,638 INFO L125 PetriNetUnfolderBase]: For 897/914 co-relation queries the response was YES. [2024-06-14 11:44:38,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 440 events. 158/440 cut-off events. For 897/914 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2296 event pairs, 100 based on Foata normal form. 6/430 useless extension candidates. Maximal degree in co-relation 1274. Up to 198 conditions per place. [2024-06-14 11:44:38,640 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 20 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-06-14 11:44:38,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 396 flow [2024-06-14 11:44:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:44:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:44:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-14 11:44:38,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-14 11:44:38,642 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 338 flow. Second operand 3 states and 80 transitions. [2024-06-14 11:44:38,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 396 flow [2024-06-14 11:44:38,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:44:38,645 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 342 flow [2024-06-14 11:44:38,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-06-14 11:44:38,645 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2024-06-14 11:44:38,645 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 342 flow [2024-06-14 11:44:38,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:38,646 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] [2024-06-14 11:44:38,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:44:38,646 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)] === [2024-06-14 11:44:38,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:38,647 INFO L85 PathProgramCache]: Analyzing trace with hash 243633435, now seen corresponding path program 2 times [2024-06-14 11:44:38,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:38,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769164332] [2024-06-14 11:44:38,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:38,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:38,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769164332] [2024-06-14 11:44:38,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769164332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:38,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:38,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:44:38,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080699885] [2024-06-14 11:44:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:38,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:44:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:44:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:44:38,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-14 11:44:38,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:38,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-14 11:44:38,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:38,918 INFO L124 PetriNetUnfolderBase]: 350/717 cut-off events. [2024-06-14 11:44:38,918 INFO L125 PetriNetUnfolderBase]: For 2506/2532 co-relation queries the response was YES. [2024-06-14 11:44:38,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2512 conditions, 717 events. 350/717 cut-off events. For 2506/2532 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3349 event pairs, 139 based on Foata normal form. 8/714 useless extension candidates. Maximal degree in co-relation 2475. Up to 569 conditions per place. [2024-06-14 11:44:38,922 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 53 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-14 11:44:38,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 592 flow [2024-06-14 11:44:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:44:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:44:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-14 11:44:38,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-14 11:44:38,924 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 342 flow. Second operand 6 states and 117 transitions. [2024-06-14 11:44:38,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 592 flow [2024-06-14 11:44:38,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:44:38,928 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 442 flow [2024-06-14 11:44:38,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=442, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-06-14 11:44:38,929 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2024-06-14 11:44:38,929 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 442 flow [2024-06-14 11:44:38,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:38,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:38,929 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] [2024-06-14 11:44:38,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:44:38,930 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)] === [2024-06-14 11:44:38,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:38,930 INFO L85 PathProgramCache]: Analyzing trace with hash -522013535, now seen corresponding path program 3 times [2024-06-14 11:44:38,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:38,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481013972] [2024-06-14 11:44:38,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:39,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:39,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481013972] [2024-06-14 11:44:39,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481013972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:39,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:39,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:44:39,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478558423] [2024-06-14 11:44:39,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:39,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:44:39,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:39,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:44:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:44:39,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-14 11:44:39,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 442 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:39,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:39,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-14 11:44:39,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:39,162 INFO L124 PetriNetUnfolderBase]: 344/709 cut-off events. [2024-06-14 11:44:39,163 INFO L125 PetriNetUnfolderBase]: For 3059/3085 co-relation queries the response was YES. [2024-06-14 11:44:39,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 709 events. 344/709 cut-off events. For 3059/3085 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3321 event pairs, 148 based on Foata normal form. 8/706 useless extension candidates. Maximal degree in co-relation 2636. Up to 533 conditions per place. [2024-06-14 11:44:39,167 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 49 selfloop transitions, 20 changer transitions 0/80 dead transitions. [2024-06-14 11:44:39,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 644 flow [2024-06-14 11:44:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:44:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:44:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-14 11:44:39,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2024-06-14 11:44:39,168 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 442 flow. Second operand 6 states and 113 transitions. [2024-06-14 11:44:39,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 644 flow [2024-06-14 11:44:39,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 628 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-14 11:44:39,174 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 489 flow [2024-06-14 11:44:39,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-14 11:44:39,174 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-06-14 11:44:39,174 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 489 flow [2024-06-14 11:44:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:39,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:39,175 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] [2024-06-14 11:44:39,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:44:39,175 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)] === [2024-06-14 11:44:39,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1689580633, now seen corresponding path program 1 times [2024-06-14 11:44:39,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:39,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75287672] [2024-06-14 11:44:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:39,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:39,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:39,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75287672] [2024-06-14 11:44:39,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75287672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:39,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:39,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:39,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163765715] [2024-06-14 11:44:39,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:39,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:44:39,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:39,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:44:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:44:39,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:39,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 489 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:39,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:39,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:39,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:39,510 INFO L124 PetriNetUnfolderBase]: 469/900 cut-off events. [2024-06-14 11:44:39,510 INFO L125 PetriNetUnfolderBase]: For 4526/4552 co-relation queries the response was YES. [2024-06-14 11:44:39,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3500 conditions, 900 events. 469/900 cut-off events. For 4526/4552 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4267 event pairs, 127 based on Foata normal form. 12/902 useless extension candidates. Maximal degree in co-relation 3456. Up to 579 conditions per place. [2024-06-14 11:44:39,515 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 78 selfloop transitions, 27 changer transitions 0/113 dead transitions. [2024-06-14 11:44:39,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 924 flow [2024-06-14 11:44:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:44:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:44:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 11:44:39,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-14 11:44:39,516 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 489 flow. Second operand 9 states and 170 transitions. [2024-06-14 11:44:39,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 924 flow [2024-06-14 11:44:39,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 113 transitions, 894 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-14 11:44:39,524 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 636 flow [2024-06-14 11:44:39,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=636, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-06-14 11:44:39,541 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 54 predicate places. [2024-06-14 11:44:39,541 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 636 flow [2024-06-14 11:44:39,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:39,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:39,542 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] [2024-06-14 11:44:39,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:44:39,542 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)] === [2024-06-14 11:44:39,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1676160733, now seen corresponding path program 2 times [2024-06-14 11:44:39,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:39,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722116742] [2024-06-14 11:44:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:39,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722116742] [2024-06-14 11:44:39,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722116742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:39,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:39,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:39,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543157039] [2024-06-14 11:44:39,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:39,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:44:39,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:44:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:44:39,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:39,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 636 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:39,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:39,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:39,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:39,968 INFO L124 PetriNetUnfolderBase]: 508/971 cut-off events. [2024-06-14 11:44:39,968 INFO L125 PetriNetUnfolderBase]: For 6260/6288 co-relation queries the response was YES. [2024-06-14 11:44:39,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4080 conditions, 971 events. 508/971 cut-off events. For 6260/6288 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4732 event pairs, 144 based on Foata normal form. 12/973 useless extension candidates. Maximal degree in co-relation 4031. Up to 569 conditions per place. [2024-06-14 11:44:39,974 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 82 selfloop transitions, 34 changer transitions 0/124 dead transitions. [2024-06-14 11:44:39,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 124 transitions, 1096 flow [2024-06-14 11:44:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:44:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:44:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-14 11:44:39,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-14 11:44:39,975 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 636 flow. Second operand 11 states and 202 transitions. [2024-06-14 11:44:39,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 124 transitions, 1096 flow [2024-06-14 11:44:39,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 124 transitions, 1047 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-14 11:44:39,985 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 718 flow [2024-06-14 11:44:39,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=718, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2024-06-14 11:44:39,986 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 64 predicate places. [2024-06-14 11:44:39,986 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 718 flow [2024-06-14 11:44:39,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:39,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:39,987 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] [2024-06-14 11:44:39,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:44:39,987 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)] === [2024-06-14 11:44:39,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:39,987 INFO L85 PathProgramCache]: Analyzing trace with hash 997450499, now seen corresponding path program 3 times [2024-06-14 11:44:39,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:39,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066459369] [2024-06-14 11:44:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:39,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:40,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:40,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066459369] [2024-06-14 11:44:40,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066459369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:40,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:40,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:40,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242813985] [2024-06-14 11:44:40,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:40,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:44:40,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:44:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:44:40,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:40,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 718 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:40,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:40,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:40,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:40,429 INFO L124 PetriNetUnfolderBase]: 543/1038 cut-off events. [2024-06-14 11:44:40,441 INFO L125 PetriNetUnfolderBase]: For 7907/7937 co-relation queries the response was YES. [2024-06-14 11:44:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 1038 events. 543/1038 cut-off events. For 7907/7937 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5166 event pairs, 139 based on Foata normal form. 12/1040 useless extension candidates. Maximal degree in co-relation 4440. Up to 506 conditions per place. [2024-06-14 11:44:40,464 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 72 selfloop transitions, 42 changer transitions 0/122 dead transitions. [2024-06-14 11:44:40,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 122 transitions, 1150 flow [2024-06-14 11:44:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:44:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:44:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-14 11:44:40,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-14 11:44:40,465 INFO L175 Difference]: Start difference. First operand has 103 places, 86 transitions, 718 flow. Second operand 10 states and 179 transitions. [2024-06-14 11:44:40,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 122 transitions, 1150 flow [2024-06-14 11:44:40,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 122 transitions, 1097 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 11:44:40,491 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 814 flow [2024-06-14 11:44:40,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=814, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2024-06-14 11:44:40,493 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2024-06-14 11:44:40,493 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 814 flow [2024-06-14 11:44:40,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:40,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:40,494 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] [2024-06-14 11:44:40,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:44:40,494 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)] === [2024-06-14 11:44:40,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1230527111, now seen corresponding path program 1 times [2024-06-14 11:44:40,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:40,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601713798] [2024-06-14 11:44:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:40,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:40,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601713798] [2024-06-14 11:44:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601713798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:40,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:44:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907678960] [2024-06-14 11:44:40,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:44:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:44:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:44:40,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:40,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 814 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:40,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:40,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:40,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:40,915 INFO L124 PetriNetUnfolderBase]: 563/1089 cut-off events. [2024-06-14 11:44:40,915 INFO L125 PetriNetUnfolderBase]: For 10139/10189 co-relation queries the response was YES. [2024-06-14 11:44:40,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4913 conditions, 1089 events. 563/1089 cut-off events. For 10139/10189 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5672 event pairs, 180 based on Foata normal form. 14/1095 useless extension candidates. Maximal degree in co-relation 4859. Up to 813 conditions per place. [2024-06-14 11:44:40,923 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 92 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-06-14 11:44:40,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 126 transitions, 1208 flow [2024-06-14 11:44:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:44:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:44:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-14 11:44:40,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-14 11:44:40,924 INFO L175 Difference]: Start difference. First operand has 107 places, 91 transitions, 814 flow. Second operand 8 states and 145 transitions. [2024-06-14 11:44:40,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 126 transitions, 1208 flow [2024-06-14 11:44:40,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 126 transitions, 1154 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 11:44:40,937 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 916 flow [2024-06-14 11:44:40,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=916, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2024-06-14 11:44:40,938 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 75 predicate places. [2024-06-14 11:44:40,940 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 916 flow [2024-06-14 11:44:40,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:40,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:40,940 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] [2024-06-14 11:44:40,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:44:40,942 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)] === [2024-06-14 11:44:40,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash -389724769, now seen corresponding path program 2 times [2024-06-14 11:44:40,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:40,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067310229] [2024-06-14 11:44:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:40,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:41,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:41,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067310229] [2024-06-14 11:44:41,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067310229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:41,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:41,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:44:41,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9364422] [2024-06-14 11:44:41,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:41,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:44:41,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:41,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:44:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:44:41,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:41,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 916 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:41,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:41,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:41,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:41,430 INFO L124 PetriNetUnfolderBase]: 596/1155 cut-off events. [2024-06-14 11:44:41,430 INFO L125 PetriNetUnfolderBase]: For 11307/11339 co-relation queries the response was YES. [2024-06-14 11:44:41,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5312 conditions, 1155 events. 596/1155 cut-off events. For 11307/11339 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6133 event pairs, 200 based on Foata normal form. 14/1161 useless extension candidates. Maximal degree in co-relation 5253. Up to 810 conditions per place. [2024-06-14 11:44:41,440 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 99 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-06-14 11:44:41,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 139 transitions, 1353 flow [2024-06-14 11:44:41,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:44:41,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:44:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-14 11:44:41,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-14 11:44:41,442 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 916 flow. Second operand 9 states and 162 transitions. [2024-06-14 11:44:41,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 139 transitions, 1353 flow [2024-06-14 11:44:41,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 139 transitions, 1297 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-06-14 11:44:41,460 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 1052 flow [2024-06-14 11:44:41,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2024-06-14 11:44:41,461 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 88 predicate places. [2024-06-14 11:44:41,461 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 1052 flow [2024-06-14 11:44:41,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:41,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:41,461 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] [2024-06-14 11:44:41,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:44:41,462 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)] === [2024-06-14 11:44:41,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1870697427, now seen corresponding path program 3 times [2024-06-14 11:44:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:41,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455681479] [2024-06-14 11:44:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:41,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:41,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455681479] [2024-06-14 11:44:41,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455681479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:41,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:41,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:44:41,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965925039] [2024-06-14 11:44:41,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:41,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:44:41,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:41,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:44:41,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:44:41,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:41,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 1052 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:41,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:41,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:41,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:41,917 INFO L124 PetriNetUnfolderBase]: 584/1137 cut-off events. [2024-06-14 11:44:41,917 INFO L125 PetriNetUnfolderBase]: For 11859/11881 co-relation queries the response was YES. [2024-06-14 11:44:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5324 conditions, 1137 events. 584/1137 cut-off events. For 11859/11881 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6047 event pairs, 185 based on Foata normal form. 12/1141 useless extension candidates. Maximal degree in co-relation 5258. Up to 831 conditions per place. [2024-06-14 11:44:41,924 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 104 selfloop transitions, 22 changer transitions 0/140 dead transitions. [2024-06-14 11:44:41,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 140 transitions, 1398 flow [2024-06-14 11:44:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:44:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:44:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 11:44:41,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-14 11:44:41,925 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 1052 flow. Second operand 8 states and 150 transitions. [2024-06-14 11:44:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 140 transitions, 1398 flow [2024-06-14 11:44:41,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 140 transitions, 1349 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-14 11:44:41,944 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 1076 flow [2024-06-14 11:44:41,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1076, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2024-06-14 11:44:41,944 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 94 predicate places. [2024-06-14 11:44:41,944 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 1076 flow [2024-06-14 11:44:41,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:41,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:41,945 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] [2024-06-14 11:44:41,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:44:41,945 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)] === [2024-06-14 11:44:41,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:41,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1033701184, now seen corresponding path program 1 times [2024-06-14 11:44:41,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:41,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650636773] [2024-06-14 11:44:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:41,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:41,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:41,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650636773] [2024-06-14 11:44:41,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650636773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:41,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:41,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033724523] [2024-06-14 11:44:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:41,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:44:41,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:41,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:44:41,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:44:42,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-14 11:44:42,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 1076 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 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) [2024-06-14 11:44:42,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:42,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-14 11:44:42,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:42,176 INFO L124 PetriNetUnfolderBase]: 450/1045 cut-off events. [2024-06-14 11:44:42,177 INFO L125 PetriNetUnfolderBase]: For 8403/8481 co-relation queries the response was YES. [2024-06-14 11:44:42,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4463 conditions, 1045 events. 450/1045 cut-off events. For 8403/8481 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6513 event pairs, 104 based on Foata normal form. 18/1034 useless extension candidates. Maximal degree in co-relation 4394. Up to 219 conditions per place. [2024-06-14 11:44:42,183 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 61 selfloop transitions, 41 changer transitions 0/147 dead transitions. [2024-06-14 11:44:42,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 147 transitions, 1374 flow [2024-06-14 11:44:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:44:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:44:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-14 11:44:42,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-06-14 11:44:42,185 INFO L175 Difference]: Start difference. First operand has 133 places, 114 transitions, 1076 flow. Second operand 9 states and 204 transitions. [2024-06-14 11:44:42,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 147 transitions, 1374 flow [2024-06-14 11:44:42,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 147 transitions, 1307 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:44:42,204 INFO L231 Difference]: Finished difference. Result has 139 places, 113 transitions, 1140 flow [2024-06-14 11:44:42,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1140, PETRI_PLACES=139, PETRI_TRANSITIONS=113} [2024-06-14 11:44:42,205 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2024-06-14 11:44:42,205 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 113 transitions, 1140 flow [2024-06-14 11:44:42,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 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) [2024-06-14 11:44:42,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:42,205 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] [2024-06-14 11:44:42,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:44:42,205 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)] === [2024-06-14 11:44:42,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2135322259, now seen corresponding path program 1 times [2024-06-14 11:44:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092202041] [2024-06-14 11:44:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:42,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:42,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092202041] [2024-06-14 11:44:42,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092202041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:42,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:42,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157373674] [2024-06-14 11:44:42,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:42,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:44:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:44:42,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:44:42,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:42,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 113 transitions, 1140 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:42,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:42,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:42,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:42,587 INFO L124 PetriNetUnfolderBase]: 722/1418 cut-off events. [2024-06-14 11:44:42,587 INFO L125 PetriNetUnfolderBase]: For 17406/17472 co-relation queries the response was YES. [2024-06-14 11:44:42,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6988 conditions, 1418 events. 722/1418 cut-off events. For 17406/17472 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8030 event pairs, 219 based on Foata normal form. 10/1416 useless extension candidates. Maximal degree in co-relation 6918. Up to 1017 conditions per place. [2024-06-14 11:44:42,597 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 113 selfloop transitions, 20 changer transitions 0/147 dead transitions. [2024-06-14 11:44:42,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 147 transitions, 1642 flow [2024-06-14 11:44:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:44:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:44:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-14 11:44:42,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-06-14 11:44:42,599 INFO L175 Difference]: Start difference. First operand has 139 places, 113 transitions, 1140 flow. Second operand 6 states and 125 transitions. [2024-06-14 11:44:42,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 147 transitions, 1642 flow [2024-06-14 11:44:42,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 147 transitions, 1633 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-14 11:44:42,626 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 1275 flow [2024-06-14 11:44:42,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1275, PETRI_PLACES=146, PETRI_TRANSITIONS=120} [2024-06-14 11:44:42,626 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 107 predicate places. [2024-06-14 11:44:42,626 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 1275 flow [2024-06-14 11:44:42,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:42,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:42,627 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] [2024-06-14 11:44:42,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:44:42,627 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)] === [2024-06-14 11:44:42,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:42,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1645968365, now seen corresponding path program 2 times [2024-06-14 11:44:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:42,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608183814] [2024-06-14 11:44:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:42,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:42,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:42,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:42,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608183814] [2024-06-14 11:44:42,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608183814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:42,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:42,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:42,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712521848] [2024-06-14 11:44:42,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:42,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:44:42,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:42,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:44:42,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:44:42,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:42,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 120 transitions, 1275 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:42,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:42,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:42,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:43,064 INFO L124 PetriNetUnfolderBase]: 706/1384 cut-off events. [2024-06-14 11:44:43,064 INFO L125 PetriNetUnfolderBase]: For 19310/19382 co-relation queries the response was YES. [2024-06-14 11:44:43,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7009 conditions, 1384 events. 706/1384 cut-off events. For 19310/19382 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7722 event pairs, 246 based on Foata normal form. 16/1384 useless extension candidates. Maximal degree in co-relation 6935. Up to 952 conditions per place. [2024-06-14 11:44:43,075 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 115 selfloop transitions, 25 changer transitions 0/154 dead transitions. [2024-06-14 11:44:43,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 154 transitions, 1745 flow [2024-06-14 11:44:43,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:44:43,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:44:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-14 11:44:43,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 11:44:43,077 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 1275 flow. Second operand 8 states and 152 transitions. [2024-06-14 11:44:43,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 154 transitions, 1745 flow [2024-06-14 11:44:43,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 154 transitions, 1707 flow, removed 19 selfloop flow, removed 0 redundant places. [2024-06-14 11:44:43,110 INFO L231 Difference]: Finished difference. Result has 155 places, 125 transitions, 1367 flow [2024-06-14 11:44:43,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1367, PETRI_PLACES=155, PETRI_TRANSITIONS=125} [2024-06-14 11:44:43,110 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 116 predicate places. [2024-06-14 11:44:43,110 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 125 transitions, 1367 flow [2024-06-14 11:44:43,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:43,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:43,112 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] [2024-06-14 11:44:43,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:44:43,112 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)] === [2024-06-14 11:44:43,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1645629752, now seen corresponding path program 2 times [2024-06-14 11:44:43,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:43,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185648218] [2024-06-14 11:44:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:43,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:43,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185648218] [2024-06-14 11:44:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185648218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:43,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:43,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814545668] [2024-06-14 11:44:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:43,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:44:43,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:44:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:44:43,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:43,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 125 transitions, 1367 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:43,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:43,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:43,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:43,621 INFO L124 PetriNetUnfolderBase]: 742/1449 cut-off events. [2024-06-14 11:44:43,621 INFO L125 PetriNetUnfolderBase]: For 21302/21355 co-relation queries the response was YES. [2024-06-14 11:44:43,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7491 conditions, 1449 events. 742/1449 cut-off events. For 21302/21355 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8180 event pairs, 223 based on Foata normal form. 10/1439 useless extension candidates. Maximal degree in co-relation 7413. Up to 986 conditions per place. [2024-06-14 11:44:43,632 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 114 selfloop transitions, 34 changer transitions 0/162 dead transitions. [2024-06-14 11:44:43,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 162 transitions, 1913 flow [2024-06-14 11:44:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:44:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:44:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-14 11:44:43,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-14 11:44:43,634 INFO L175 Difference]: Start difference. First operand has 155 places, 125 transitions, 1367 flow. Second operand 8 states and 154 transitions. [2024-06-14 11:44:43,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 162 transitions, 1913 flow [2024-06-14 11:44:43,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 162 transitions, 1838 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-14 11:44:43,668 INFO L231 Difference]: Finished difference. Result has 160 places, 131 transitions, 1468 flow [2024-06-14 11:44:43,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1468, PETRI_PLACES=160, PETRI_TRANSITIONS=131} [2024-06-14 11:44:43,669 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 121 predicate places. [2024-06-14 11:44:43,669 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 131 transitions, 1468 flow [2024-06-14 11:44:43,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:43,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:43,670 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] [2024-06-14 11:44:43,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:44:43,670 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)] === [2024-06-14 11:44:43,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:43,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1830898942, now seen corresponding path program 3 times [2024-06-14 11:44:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:43,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415573713] [2024-06-14 11:44:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415573713] [2024-06-14 11:44:43,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415573713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:43,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:43,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785323614] [2024-06-14 11:44:43,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:43,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:44:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:44:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:44:43,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:43,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 131 transitions, 1468 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:43,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:43,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:43,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:44,125 INFO L124 PetriNetUnfolderBase]: 746/1467 cut-off events. [2024-06-14 11:44:44,125 INFO L125 PetriNetUnfolderBase]: For 22939/22986 co-relation queries the response was YES. [2024-06-14 11:44:44,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7647 conditions, 1467 events. 746/1467 cut-off events. For 22939/22986 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8419 event pairs, 215 based on Foata normal form. 10/1460 useless extension candidates. Maximal degree in co-relation 7567. Up to 1057 conditions per place. [2024-06-14 11:44:44,178 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 114 selfloop transitions, 30 changer transitions 0/158 dead transitions. [2024-06-14 11:44:44,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 158 transitions, 1905 flow [2024-06-14 11:44:44,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:44:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:44:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-14 11:44:44,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-06-14 11:44:44,179 INFO L175 Difference]: Start difference. First operand has 160 places, 131 transitions, 1468 flow. Second operand 6 states and 125 transitions. [2024-06-14 11:44:44,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 158 transitions, 1905 flow [2024-06-14 11:44:44,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 158 transitions, 1813 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-14 11:44:44,208 INFO L231 Difference]: Finished difference. Result has 164 places, 133 transitions, 1494 flow [2024-06-14 11:44:44,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1494, PETRI_PLACES=164, PETRI_TRANSITIONS=133} [2024-06-14 11:44:44,209 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2024-06-14 11:44:44,209 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 133 transitions, 1494 flow [2024-06-14 11:44:44,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2024-06-14 11:44:44,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:44,209 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] [2024-06-14 11:44:44,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:44:44,210 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)] === [2024-06-14 11:44:44,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:44,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1557726648, now seen corresponding path program 1 times [2024-06-14 11:44:44,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:44,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676879039] [2024-06-14 11:44:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:44,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:44,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676879039] [2024-06-14 11:44:44,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676879039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:44,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:44,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:44:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961709089] [2024-06-14 11:44:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:44:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:44:44,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:44:44,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:44,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 133 transitions, 1494 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:44,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:44,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:44,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:44,641 INFO L124 PetriNetUnfolderBase]: 749/1478 cut-off events. [2024-06-14 11:44:44,642 INFO L125 PetriNetUnfolderBase]: For 25601/25634 co-relation queries the response was YES. [2024-06-14 11:44:44,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7886 conditions, 1478 events. 749/1478 cut-off events. For 25601/25634 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8473 event pairs, 299 based on Foata normal form. 7/1477 useless extension candidates. Maximal degree in co-relation 7803. Up to 1288 conditions per place. [2024-06-14 11:44:44,652 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 110 selfloop transitions, 18 changer transitions 0/146 dead transitions. [2024-06-14 11:44:44,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 146 transitions, 1784 flow [2024-06-14 11:44:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:44:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:44:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-14 11:44:44,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-06-14 11:44:44,653 INFO L175 Difference]: Start difference. First operand has 164 places, 133 transitions, 1494 flow. Second operand 8 states and 134 transitions. [2024-06-14 11:44:44,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 146 transitions, 1784 flow [2024-06-14 11:44:44,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 146 transitions, 1714 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 11:44:44,687 INFO L231 Difference]: Finished difference. Result has 167 places, 133 transitions, 1464 flow [2024-06-14 11:44:44,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1464, PETRI_PLACES=167, PETRI_TRANSITIONS=133} [2024-06-14 11:44:44,688 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 128 predicate places. [2024-06-14 11:44:44,688 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 133 transitions, 1464 flow [2024-06-14 11:44:44,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:44,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:44,688 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] [2024-06-14 11:44:44,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:44:44,688 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)] === [2024-06-14 11:44:44,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:44,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1127842518, now seen corresponding path program 2 times [2024-06-14 11:44:44,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:44,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942491553] [2024-06-14 11:44:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:44,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:44,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:44,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942491553] [2024-06-14 11:44:44,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942491553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:44,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:44,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:44:44,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851863720] [2024-06-14 11:44:44,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:44,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:44:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:44:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:44:44,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:44,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 133 transitions, 1464 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:44,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:44,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:44,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:45,182 INFO L124 PetriNetUnfolderBase]: 756/1497 cut-off events. [2024-06-14 11:44:45,182 INFO L125 PetriNetUnfolderBase]: For 27444/27477 co-relation queries the response was YES. [2024-06-14 11:44:45,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7960 conditions, 1497 events. 756/1497 cut-off events. For 27444/27477 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8619 event pairs, 283 based on Foata normal form. 7/1496 useless extension candidates. Maximal degree in co-relation 7877. Up to 1263 conditions per place. [2024-06-14 11:44:45,195 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 109 selfloop transitions, 25 changer transitions 0/152 dead transitions. [2024-06-14 11:44:45,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 152 transitions, 1838 flow [2024-06-14 11:44:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:44:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:44:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-14 11:44:45,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-14 11:44:45,196 INFO L175 Difference]: Start difference. First operand has 167 places, 133 transitions, 1464 flow. Second operand 9 states and 147 transitions. [2024-06-14 11:44:45,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 152 transitions, 1838 flow [2024-06-14 11:44:45,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 152 transitions, 1773 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:44:45,231 INFO L231 Difference]: Finished difference. Result has 167 places, 136 transitions, 1479 flow [2024-06-14 11:44:45,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1479, PETRI_PLACES=167, PETRI_TRANSITIONS=136} [2024-06-14 11:44:45,232 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 128 predicate places. [2024-06-14 11:44:45,232 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 136 transitions, 1479 flow [2024-06-14 11:44:45,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:45,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:45,233 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] [2024-06-14 11:44:45,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:44:45,233 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)] === [2024-06-14 11:44:45,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:45,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1399195420, now seen corresponding path program 3 times [2024-06-14 11:44:45,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:45,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655712196] [2024-06-14 11:44:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:45,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:45,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655712196] [2024-06-14 11:44:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655712196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:45,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:45,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:44:45,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259530273] [2024-06-14 11:44:45,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:44:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:44:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:44:45,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 11:44:45,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 136 transitions, 1479 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:45,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:45,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 11:44:45,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:45,664 INFO L124 PetriNetUnfolderBase]: 753/1492 cut-off events. [2024-06-14 11:44:45,664 INFO L125 PetriNetUnfolderBase]: For 28663/28696 co-relation queries the response was YES. [2024-06-14 11:44:45,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7968 conditions, 1492 events. 753/1492 cut-off events. For 28663/28696 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8601 event pairs, 281 based on Foata normal form. 7/1491 useless extension candidates. Maximal degree in co-relation 7887. Up to 1261 conditions per place. [2024-06-14 11:44:45,675 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 105 selfloop transitions, 26 changer transitions 0/149 dead transitions. [2024-06-14 11:44:45,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 149 transitions, 1773 flow [2024-06-14 11:44:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:44:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:44:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-14 11:44:45,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-14 11:44:45,676 INFO L175 Difference]: Start difference. First operand has 167 places, 136 transitions, 1479 flow. Second operand 8 states and 132 transitions. [2024-06-14 11:44:45,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 149 transitions, 1773 flow [2024-06-14 11:44:45,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 149 transitions, 1702 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:44:45,709 INFO L231 Difference]: Finished difference. Result has 169 places, 136 transitions, 1464 flow [2024-06-14 11:44:45,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1464, PETRI_PLACES=169, PETRI_TRANSITIONS=136} [2024-06-14 11:44:45,709 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 130 predicate places. [2024-06-14 11:44:45,710 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 136 transitions, 1464 flow [2024-06-14 11:44:45,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:45,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:45,710 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] [2024-06-14 11:44:45,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:44:45,710 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)] === [2024-06-14 11:44:45,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1957793240, now seen corresponding path program 1 times [2024-06-14 11:44:45,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:45,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82880293] [2024-06-14 11:44:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:45,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:45,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82880293] [2024-06-14 11:44:45,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82880293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:45,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:45,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:45,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125074644] [2024-06-14 11:44:45,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:45,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:45,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:45,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:45,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:45,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:45,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 136 transitions, 1464 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:45,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:45,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:45,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:46,260 INFO L124 PetriNetUnfolderBase]: 800/1541 cut-off events. [2024-06-14 11:44:46,260 INFO L125 PetriNetUnfolderBase]: For 29680/29712 co-relation queries the response was YES. [2024-06-14 11:44:46,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8114 conditions, 1541 events. 800/1541 cut-off events. For 29680/29712 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8663 event pairs, 249 based on Foata normal form. 10/1543 useless extension candidates. Maximal degree in co-relation 8033. Up to 1173 conditions per place. [2024-06-14 11:44:46,271 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 131 selfloop transitions, 34 changer transitions 0/171 dead transitions. [2024-06-14 11:44:46,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 1908 flow [2024-06-14 11:44:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:44:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:44:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-14 11:44:46,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-14 11:44:46,272 INFO L175 Difference]: Start difference. First operand has 169 places, 136 transitions, 1464 flow. Second operand 11 states and 185 transitions. [2024-06-14 11:44:46,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 1908 flow [2024-06-14 11:44:46,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 171 transitions, 1853 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 11:44:46,312 INFO L231 Difference]: Finished difference. Result has 174 places, 136 transitions, 1481 flow [2024-06-14 11:44:46,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1481, PETRI_PLACES=174, PETRI_TRANSITIONS=136} [2024-06-14 11:44:46,312 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 135 predicate places. [2024-06-14 11:44:46,313 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 136 transitions, 1481 flow [2024-06-14 11:44:46,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:46,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:46,313 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] [2024-06-14 11:44:46,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:44:46,314 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)] === [2024-06-14 11:44:46,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:46,314 INFO L85 PathProgramCache]: Analyzing trace with hash 397838534, now seen corresponding path program 2 times [2024-06-14 11:44:46,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:46,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208994277] [2024-06-14 11:44:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:46,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:46,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208994277] [2024-06-14 11:44:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208994277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:46,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:46,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:46,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992153718] [2024-06-14 11:44:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:46,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:46,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:46,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 136 transitions, 1481 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:46,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:46,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:46,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:46,959 INFO L124 PetriNetUnfolderBase]: 812/1557 cut-off events. [2024-06-14 11:44:46,959 INFO L125 PetriNetUnfolderBase]: For 32178/32212 co-relation queries the response was YES. [2024-06-14 11:44:46,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8298 conditions, 1557 events. 812/1557 cut-off events. For 32178/32212 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8753 event pairs, 241 based on Foata normal form. 10/1559 useless extension candidates. Maximal degree in co-relation 8217. Up to 1110 conditions per place. [2024-06-14 11:44:46,971 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 133 selfloop transitions, 42 changer transitions 0/181 dead transitions. [2024-06-14 11:44:46,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 181 transitions, 2027 flow [2024-06-14 11:44:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 11:44:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 11:44:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 236 transitions. [2024-06-14 11:44:46,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41403508771929826 [2024-06-14 11:44:46,972 INFO L175 Difference]: Start difference. First operand has 174 places, 136 transitions, 1481 flow. Second operand 15 states and 236 transitions. [2024-06-14 11:44:46,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 181 transitions, 2027 flow [2024-06-14 11:44:47,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 181 transitions, 1941 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:44:47,010 INFO L231 Difference]: Finished difference. Result has 180 places, 137 transitions, 1495 flow [2024-06-14 11:44:47,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1495, PETRI_PLACES=180, PETRI_TRANSITIONS=137} [2024-06-14 11:44:47,016 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 141 predicate places. [2024-06-14 11:44:47,017 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 137 transitions, 1495 flow [2024-06-14 11:44:47,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:47,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:47,017 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] [2024-06-14 11:44:47,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:44:47,017 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)] === [2024-06-14 11:44:47,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash 397361444, now seen corresponding path program 3 times [2024-06-14 11:44:47,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:47,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71256491] [2024-06-14 11:44:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:47,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:47,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71256491] [2024-06-14 11:44:47,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71256491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:47,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:47,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:47,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263349836] [2024-06-14 11:44:47,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:47,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:47,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:47,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:47,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:47,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:47,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 137 transitions, 1495 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:47,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:47,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:47,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:47,674 INFO L124 PetriNetUnfolderBase]: 833/1600 cut-off events. [2024-06-14 11:44:47,674 INFO L125 PetriNetUnfolderBase]: For 34204/34236 co-relation queries the response was YES. [2024-06-14 11:44:47,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8558 conditions, 1600 events. 833/1600 cut-off events. For 34204/34236 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9122 event pairs, 241 based on Foata normal form. 10/1602 useless extension candidates. Maximal degree in co-relation 8476. Up to 1116 conditions per place. [2024-06-14 11:44:47,685 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 141 selfloop transitions, 43 changer transitions 0/190 dead transitions. [2024-06-14 11:44:47,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 190 transitions, 2104 flow [2024-06-14 11:44:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-14 11:44:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-14 11:44:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 255 transitions. [2024-06-14 11:44:47,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194078947368421 [2024-06-14 11:44:47,686 INFO L175 Difference]: Start difference. First operand has 180 places, 137 transitions, 1495 flow. Second operand 16 states and 255 transitions. [2024-06-14 11:44:47,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 190 transitions, 2104 flow [2024-06-14 11:44:47,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 190 transitions, 2010 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:44:47,734 INFO L231 Difference]: Finished difference. Result has 184 places, 140 transitions, 1526 flow [2024-06-14 11:44:47,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1526, PETRI_PLACES=184, PETRI_TRANSITIONS=140} [2024-06-14 11:44:47,735 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 145 predicate places. [2024-06-14 11:44:47,735 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 140 transitions, 1526 flow [2024-06-14 11:44:47,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:47,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:47,735 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] [2024-06-14 11:44:47,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:44:47,736 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)] === [2024-06-14 11:44:47,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash 397822724, now seen corresponding path program 4 times [2024-06-14 11:44:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:47,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644224293] [2024-06-14 11:44:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644224293] [2024-06-14 11:44:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644224293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:47,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:47,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:47,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615254479] [2024-06-14 11:44:47,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:47,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:47,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:47,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 140 transitions, 1526 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:47,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:47,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:47,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:48,306 INFO L124 PetriNetUnfolderBase]: 824/1589 cut-off events. [2024-06-14 11:44:48,306 INFO L125 PetriNetUnfolderBase]: For 34306/34336 co-relation queries the response was YES. [2024-06-14 11:44:48,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8421 conditions, 1589 events. 824/1589 cut-off events. For 34306/34336 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9092 event pairs, 236 based on Foata normal form. 10/1591 useless extension candidates. Maximal degree in co-relation 8339. Up to 1114 conditions per place. [2024-06-14 11:44:48,318 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 139 selfloop transitions, 45 changer transitions 0/190 dead transitions. [2024-06-14 11:44:48,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 190 transitions, 2050 flow [2024-06-14 11:44:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-14 11:44:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-14 11:44:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 263 transitions. [2024-06-14 11:44:48,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071207430340557 [2024-06-14 11:44:48,320 INFO L175 Difference]: Start difference. First operand has 184 places, 140 transitions, 1526 flow. Second operand 17 states and 263 transitions. [2024-06-14 11:44:48,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 190 transitions, 2050 flow [2024-06-14 11:44:48,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 190 transitions, 1958 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 11:44:48,367 INFO L231 Difference]: Finished difference. Result has 189 places, 140 transitions, 1528 flow [2024-06-14 11:44:48,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1528, PETRI_PLACES=189, PETRI_TRANSITIONS=140} [2024-06-14 11:44:48,368 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 150 predicate places. [2024-06-14 11:44:48,368 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 140 transitions, 1528 flow [2024-06-14 11:44:48,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:48,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:48,368 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] [2024-06-14 11:44:48,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 11:44:48,368 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)] === [2024-06-14 11:44:48,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash 425385960, now seen corresponding path program 5 times [2024-06-14 11:44:48,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:48,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728744668] [2024-06-14 11:44:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:48,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:48,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:48,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728744668] [2024-06-14 11:44:48,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728744668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:48,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:48,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:48,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12547444] [2024-06-14 11:44:48,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:48,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:48,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:48,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:48,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:48,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 140 transitions, 1528 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:48,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:48,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:48,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:48,947 INFO L124 PetriNetUnfolderBase]: 866/1671 cut-off events. [2024-06-14 11:44:48,947 INFO L125 PetriNetUnfolderBase]: For 39066/39096 co-relation queries the response was YES. [2024-06-14 11:44:48,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8960 conditions, 1671 events. 866/1671 cut-off events. For 39066/39096 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9705 event pairs, 212 based on Foata normal form. 10/1673 useless extension candidates. Maximal degree in co-relation 8877. Up to 886 conditions per place. [2024-06-14 11:44:48,961 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 114 selfloop transitions, 70 changer transitions 0/190 dead transitions. [2024-06-14 11:44:48,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 190 transitions, 2193 flow [2024-06-14 11:44:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 11:44:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 11:44:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2024-06-14 11:44:48,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4070175438596491 [2024-06-14 11:44:48,962 INFO L175 Difference]: Start difference. First operand has 189 places, 140 transitions, 1528 flow. Second operand 15 states and 232 transitions. [2024-06-14 11:44:48,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 190 transitions, 2193 flow [2024-06-14 11:44:49,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 190 transitions, 2087 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-14 11:44:49,012 INFO L231 Difference]: Finished difference. Result has 187 places, 144 transitions, 1615 flow [2024-06-14 11:44:49,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1615, PETRI_PLACES=187, PETRI_TRANSITIONS=144} [2024-06-14 11:44:49,012 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2024-06-14 11:44:49,012 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 144 transitions, 1615 flow [2024-06-14 11:44:49,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:49,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:49,013 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] [2024-06-14 11:44:49,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 11:44:49,013 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)] === [2024-06-14 11:44:49,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:49,013 INFO L85 PathProgramCache]: Analyzing trace with hash 772728514, now seen corresponding path program 6 times [2024-06-14 11:44:49,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:49,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371041546] [2024-06-14 11:44:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:49,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:49,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371041546] [2024-06-14 11:44:49,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371041546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:49,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:49,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864184957] [2024-06-14 11:44:49,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:49,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:49,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:49,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 144 transitions, 1615 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:49,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:49,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:49,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:49,617 INFO L124 PetriNetUnfolderBase]: 908/1751 cut-off events. [2024-06-14 11:44:49,617 INFO L125 PetriNetUnfolderBase]: For 44430/44460 co-relation queries the response was YES. [2024-06-14 11:44:49,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9581 conditions, 1751 events. 908/1751 cut-off events. For 44430/44460 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10344 event pairs, 217 based on Foata normal form. 10/1753 useless extension candidates. Maximal degree in co-relation 9497. Up to 898 conditions per place. [2024-06-14 11:44:49,629 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 133 selfloop transitions, 70 changer transitions 0/209 dead transitions. [2024-06-14 11:44:49,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 209 transitions, 2496 flow [2024-06-14 11:44:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-14 11:44:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-14 11:44:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 291 transitions. [2024-06-14 11:44:49,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40304709141274236 [2024-06-14 11:44:49,635 INFO L175 Difference]: Start difference. First operand has 187 places, 144 transitions, 1615 flow. Second operand 19 states and 291 transitions. [2024-06-14 11:44:49,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 209 transitions, 2496 flow [2024-06-14 11:44:49,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 209 transitions, 2363 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 11:44:49,687 INFO L231 Difference]: Finished difference. Result has 197 places, 149 transitions, 1701 flow [2024-06-14 11:44:49,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1701, PETRI_PLACES=197, PETRI_TRANSITIONS=149} [2024-06-14 11:44:49,689 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 158 predicate places. [2024-06-14 11:44:49,689 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 149 transitions, 1701 flow [2024-06-14 11:44:49,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:49,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:49,689 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] [2024-06-14 11:44:49,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 11:44:49,689 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)] === [2024-06-14 11:44:49,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash 996998370, now seen corresponding path program 7 times [2024-06-14 11:44:49,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:49,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267540847] [2024-06-14 11:44:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:49,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:49,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:49,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267540847] [2024-06-14 11:44:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267540847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:44:49,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354428855] [2024-06-14 11:44:49,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:49,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:44:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:44:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:44:49,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:49,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 149 transitions, 1701 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:49,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:49,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:49,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:50,113 INFO L124 PetriNetUnfolderBase]: 899/1736 cut-off events. [2024-06-14 11:44:50,113 INFO L125 PetriNetUnfolderBase]: For 44269/44299 co-relation queries the response was YES. [2024-06-14 11:44:50,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9432 conditions, 1736 events. 899/1736 cut-off events. For 44269/44299 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10255 event pairs, 199 based on Foata normal form. 10/1738 useless extension candidates. Maximal degree in co-relation 9347. Up to 896 conditions per place. [2024-06-14 11:44:50,124 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 108 selfloop transitions, 67 changer transitions 0/181 dead transitions. [2024-06-14 11:44:50,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 181 transitions, 2205 flow [2024-06-14 11:44:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:44:50,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:44:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-14 11:44:50,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-14 11:44:50,125 INFO L175 Difference]: Start difference. First operand has 197 places, 149 transitions, 1701 flow. Second operand 10 states and 166 transitions. [2024-06-14 11:44:50,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 181 transitions, 2205 flow [2024-06-14 11:44:50,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 181 transitions, 2031 flow, removed 18 selfloop flow, removed 13 redundant places. [2024-06-14 11:44:50,171 INFO L231 Difference]: Finished difference. Result has 194 places, 149 transitions, 1665 flow [2024-06-14 11:44:50,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1665, PETRI_PLACES=194, PETRI_TRANSITIONS=149} [2024-06-14 11:44:50,172 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 155 predicate places. [2024-06-14 11:44:50,172 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 149 transitions, 1665 flow [2024-06-14 11:44:50,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:50,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:50,172 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] [2024-06-14 11:44:50,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 11:44:50,172 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)] === [2024-06-14 11:44:50,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:50,172 INFO L85 PathProgramCache]: Analyzing trace with hash 772267234, now seen corresponding path program 8 times [2024-06-14 11:44:50,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:50,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943736366] [2024-06-14 11:44:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:50,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:50,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:50,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943736366] [2024-06-14 11:44:50,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943736366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:50,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:50,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:50,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240164160] [2024-06-14 11:44:50,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:50,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:50,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:50,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:50,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 149 transitions, 1665 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:50,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:50,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:50,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:50,693 INFO L124 PetriNetUnfolderBase]: 890/1721 cut-off events. [2024-06-14 11:44:50,693 INFO L125 PetriNetUnfolderBase]: For 44030/44060 co-relation queries the response was YES. [2024-06-14 11:44:50,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9225 conditions, 1721 events. 890/1721 cut-off events. For 44030/44060 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10150 event pairs, 212 based on Foata normal form. 10/1723 useless extension candidates. Maximal degree in co-relation 9139. Up to 894 conditions per place. [2024-06-14 11:44:50,704 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 118 selfloop transitions, 69 changer transitions 0/193 dead transitions. [2024-06-14 11:44:50,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 193 transitions, 2291 flow [2024-06-14 11:44:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 11:44:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 11:44:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 223 transitions. [2024-06-14 11:44:50,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191729323308271 [2024-06-14 11:44:50,707 INFO L175 Difference]: Start difference. First operand has 194 places, 149 transitions, 1665 flow. Second operand 14 states and 223 transitions. [2024-06-14 11:44:50,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 193 transitions, 2291 flow [2024-06-14 11:44:50,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 193 transitions, 2151 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 11:44:50,754 INFO L231 Difference]: Finished difference. Result has 201 places, 149 transitions, 1667 flow [2024-06-14 11:44:50,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1667, PETRI_PLACES=201, PETRI_TRANSITIONS=149} [2024-06-14 11:44:50,755 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 162 predicate places. [2024-06-14 11:44:50,755 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 149 transitions, 1667 flow [2024-06-14 11:44:50,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:50,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:50,755 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] [2024-06-14 11:44:50,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 11:44:50,755 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)] === [2024-06-14 11:44:50,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash 425370150, now seen corresponding path program 9 times [2024-06-14 11:44:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:50,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86602890] [2024-06-14 11:44:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:50,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:50,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86602890] [2024-06-14 11:44:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86602890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:50,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:50,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:50,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147068105] [2024-06-14 11:44:50,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:50,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:50,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:50,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:50,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:50,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:50,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 149 transitions, 1667 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:50,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:50,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:50,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:51,335 INFO L124 PetriNetUnfolderBase]: 881/1706 cut-off events. [2024-06-14 11:44:51,336 INFO L125 PetriNetUnfolderBase]: For 43681/43711 co-relation queries the response was YES. [2024-06-14 11:44:51,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9052 conditions, 1706 events. 881/1706 cut-off events. For 43681/43711 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10032 event pairs, 213 based on Foata normal form. 10/1708 useless extension candidates. Maximal degree in co-relation 8966. Up to 892 conditions per place. [2024-06-14 11:44:51,347 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 113 selfloop transitions, 75 changer transitions 0/194 dead transitions. [2024-06-14 11:44:51,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 194 transitions, 2243 flow [2024-06-14 11:44:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 11:44:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 11:44:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 231 transitions. [2024-06-14 11:44:51,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-06-14 11:44:51,361 INFO L175 Difference]: Start difference. First operand has 201 places, 149 transitions, 1667 flow. Second operand 15 states and 231 transitions. [2024-06-14 11:44:51,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 194 transitions, 2243 flow [2024-06-14 11:44:51,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 194 transitions, 2089 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-14 11:44:51,455 INFO L231 Difference]: Finished difference. Result has 202 places, 149 transitions, 1669 flow [2024-06-14 11:44:51,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1669, PETRI_PLACES=202, PETRI_TRANSITIONS=149} [2024-06-14 11:44:51,455 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 163 predicate places. [2024-06-14 11:44:51,455 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 149 transitions, 1669 flow [2024-06-14 11:44:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:51,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:51,456 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] [2024-06-14 11:44:51,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 11:44:51,456 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)] === [2024-06-14 11:44:51,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:51,457 INFO L85 PathProgramCache]: Analyzing trace with hash 772744324, now seen corresponding path program 10 times [2024-06-14 11:44:51,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:51,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175283298] [2024-06-14 11:44:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:51,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:51,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175283298] [2024-06-14 11:44:51,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175283298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:51,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:51,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:51,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516945040] [2024-06-14 11:44:51,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:51,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:51,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:51,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:51,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:51,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:51,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 149 transitions, 1669 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:51,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:51,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:51,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:52,056 INFO L124 PetriNetUnfolderBase]: 872/1691 cut-off events. [2024-06-14 11:44:52,057 INFO L125 PetriNetUnfolderBase]: For 40650/40680 co-relation queries the response was YES. [2024-06-14 11:44:52,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8815 conditions, 1691 events. 872/1691 cut-off events. For 40650/40680 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9928 event pairs, 205 based on Foata normal form. 10/1693 useless extension candidates. Maximal degree in co-relation 8729. Up to 890 conditions per place. [2024-06-14 11:44:52,068 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 123 selfloop transitions, 70 changer transitions 0/199 dead transitions. [2024-06-14 11:44:52,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 199 transitions, 2265 flow [2024-06-14 11:44:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-14 11:44:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-14 11:44:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 260 transitions. [2024-06-14 11:44:52,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024767801857585 [2024-06-14 11:44:52,070 INFO L175 Difference]: Start difference. First operand has 202 places, 149 transitions, 1669 flow. Second operand 17 states and 260 transitions. [2024-06-14 11:44:52,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 199 transitions, 2265 flow [2024-06-14 11:44:52,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 199 transitions, 2111 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-14 11:44:52,121 INFO L231 Difference]: Finished difference. Result has 205 places, 149 transitions, 1659 flow [2024-06-14 11:44:52,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1659, PETRI_PLACES=205, PETRI_TRANSITIONS=149} [2024-06-14 11:44:52,122 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 166 predicate places. [2024-06-14 11:44:52,122 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 149 transitions, 1659 flow [2024-06-14 11:44:52,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:52,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:52,122 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, 1, 1, 1] [2024-06-14 11:44:52,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 11:44:52,123 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)] === [2024-06-14 11:44:52,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:52,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1227600046, now seen corresponding path program 1 times [2024-06-14 11:44:52,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:52,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934749868] [2024-06-14 11:44:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:52,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:52,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:52,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934749868] [2024-06-14 11:44:52,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934749868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:52,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:52,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:44:52,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588716021] [2024-06-14 11:44:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:52,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:44:52,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:52,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:44:52,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:44:52,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-14 11:44:52,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 149 transitions, 1659 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:52,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:52,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-14 11:44:52,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:52,606 INFO L124 PetriNetUnfolderBase]: 986/1900 cut-off events. [2024-06-14 11:44:52,606 INFO L125 PetriNetUnfolderBase]: For 47032/47038 co-relation queries the response was YES. [2024-06-14 11:44:52,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9582 conditions, 1900 events. 986/1900 cut-off events. For 47032/47038 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11361 event pairs, 323 based on Foata normal form. 22/1915 useless extension candidates. Maximal degree in co-relation 9495. Up to 1486 conditions per place. [2024-06-14 11:44:52,619 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 157 selfloop transitions, 35 changer transitions 0/198 dead transitions. [2024-06-14 11:44:52,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 198 transitions, 2408 flow [2024-06-14 11:44:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:44:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:44:52,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-14 11:44:52,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38516746411483255 [2024-06-14 11:44:52,621 INFO L175 Difference]: Start difference. First operand has 205 places, 149 transitions, 1659 flow. Second operand 11 states and 161 transitions. [2024-06-14 11:44:52,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 198 transitions, 2408 flow [2024-06-14 11:44:52,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 198 transitions, 2250 flow, removed 0 selfloop flow, removed 16 redundant places. [2024-06-14 11:44:52,735 INFO L231 Difference]: Finished difference. Result has 207 places, 172 transitions, 1940 flow [2024-06-14 11:44:52,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1940, PETRI_PLACES=207, PETRI_TRANSITIONS=172} [2024-06-14 11:44:52,736 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2024-06-14 11:44:52,736 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 172 transitions, 1940 flow [2024-06-14 11:44:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:52,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:52,736 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] [2024-06-14 11:44:52,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 11:44:52,737 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)] === [2024-06-14 11:44:52,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 717704657, now seen corresponding path program 1 times [2024-06-14 11:44:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:52,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729576952] [2024-06-14 11:44:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:52,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:52,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729576952] [2024-06-14 11:44:52,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729576952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:52,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:52,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915153723] [2024-06-14 11:44:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:52,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:44:52,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:44:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:44:52,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-14 11:44:52,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 172 transitions, 1940 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:52,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:52,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-14 11:44:52,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:53,055 INFO L124 PetriNetUnfolderBase]: 647/1481 cut-off events. [2024-06-14 11:44:53,055 INFO L125 PetriNetUnfolderBase]: For 19407/19546 co-relation queries the response was YES. [2024-06-14 11:44:53,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 1481 events. 647/1481 cut-off events. For 19407/19546 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9898 event pairs, 181 based on Foata normal form. 20/1453 useless extension candidates. Maximal degree in co-relation 6688. Up to 671 conditions per place. [2024-06-14 11:44:53,066 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 87 selfloop transitions, 33 changer transitions 0/194 dead transitions. [2024-06-14 11:44:53,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 194 transitions, 2224 flow [2024-06-14 11:44:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:44:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:44:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-14 11:44:53,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6019736842105263 [2024-06-14 11:44:53,067 INFO L175 Difference]: Start difference. First operand has 207 places, 172 transitions, 1940 flow. Second operand 8 states and 183 transitions. [2024-06-14 11:44:53,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 194 transitions, 2224 flow [2024-06-14 11:44:53,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 194 transitions, 2144 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 11:44:53,122 INFO L231 Difference]: Finished difference. Result has 211 places, 167 transitions, 1920 flow [2024-06-14 11:44:53,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1920, PETRI_PLACES=211, PETRI_TRANSITIONS=167} [2024-06-14 11:44:53,122 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 172 predicate places. [2024-06-14 11:44:53,123 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 167 transitions, 1920 flow [2024-06-14 11:44:53,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:53,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:53,123 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] [2024-06-14 11:44:53,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 11:44:53,123 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)] === [2024-06-14 11:44:53,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash -624224793, now seen corresponding path program 2 times [2024-06-14 11:44:53,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:53,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839209341] [2024-06-14 11:44:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:53,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:53,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839209341] [2024-06-14 11:44:53,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839209341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:53,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:53,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:53,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002913609] [2024-06-14 11:44:53,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:53,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:44:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:53,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:44:53,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:44:53,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-14 11:44:53,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 167 transitions, 1920 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:53,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:53,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-14 11:44:53,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:53,423 INFO L124 PetriNetUnfolderBase]: 583/1368 cut-off events. [2024-06-14 11:44:53,423 INFO L125 PetriNetUnfolderBase]: For 17314/17429 co-relation queries the response was YES. [2024-06-14 11:44:53,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6198 conditions, 1368 events. 583/1368 cut-off events. For 17314/17429 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9064 event pairs, 174 based on Foata normal form. 18/1348 useless extension candidates. Maximal degree in co-relation 6100. Up to 671 conditions per place. [2024-06-14 11:44:53,432 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 83 selfloop transitions, 28 changer transitions 0/175 dead transitions. [2024-06-14 11:44:53,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 175 transitions, 2052 flow [2024-06-14 11:44:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:44:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:44:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-14 11:44:53,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6359649122807017 [2024-06-14 11:44:53,434 INFO L175 Difference]: Start difference. First operand has 211 places, 167 transitions, 1920 flow. Second operand 6 states and 145 transitions. [2024-06-14 11:44:53,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 175 transitions, 2052 flow [2024-06-14 11:44:53,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 175 transitions, 1930 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:44:53,479 INFO L231 Difference]: Finished difference. Result has 207 places, 153 transitions, 1700 flow [2024-06-14 11:44:53,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1700, PETRI_PLACES=207, PETRI_TRANSITIONS=153} [2024-06-14 11:44:53,481 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2024-06-14 11:44:53,481 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 153 transitions, 1700 flow [2024-06-14 11:44:53,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:53,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:53,481 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] [2024-06-14 11:44:53,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 11:44:53,481 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)] === [2024-06-14 11:44:53,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1184616660, now seen corresponding path program 2 times [2024-06-14 11:44:53,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:53,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223745415] [2024-06-14 11:44:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:53,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:53,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223745415] [2024-06-14 11:44:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223745415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:53,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:53,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:44:53,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353774039] [2024-06-14 11:44:53,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:44:53,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:44:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:44:53,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:53,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 153 transitions, 1700 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:53,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:53,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:53,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:53,925 INFO L124 PetriNetUnfolderBase]: 814/1652 cut-off events. [2024-06-14 11:44:53,925 INFO L125 PetriNetUnfolderBase]: For 34716/34725 co-relation queries the response was YES. [2024-06-14 11:44:53,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7945 conditions, 1652 events. 814/1652 cut-off events. For 34716/34725 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9886 event pairs, 254 based on Foata normal form. 18/1663 useless extension candidates. Maximal degree in co-relation 7847. Up to 1122 conditions per place. [2024-06-14 11:44:53,935 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 135 selfloop transitions, 39 changer transitions 0/180 dead transitions. [2024-06-14 11:44:53,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 180 transitions, 2156 flow [2024-06-14 11:44:53,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:44:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:44:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-14 11:44:53,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-14 11:44:53,953 INFO L175 Difference]: Start difference. First operand has 207 places, 153 transitions, 1700 flow. Second operand 9 states and 153 transitions. [2024-06-14 11:44:53,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 180 transitions, 2156 flow [2024-06-14 11:44:54,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 180 transitions, 2088 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 11:44:54,022 INFO L231 Difference]: Finished difference. Result has 211 places, 153 transitions, 1721 flow [2024-06-14 11:44:54,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1721, PETRI_PLACES=211, PETRI_TRANSITIONS=153} [2024-06-14 11:44:54,031 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 172 predicate places. [2024-06-14 11:44:54,031 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 153 transitions, 1721 flow [2024-06-14 11:44:54,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:54,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:54,031 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] [2024-06-14 11:44:54,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 11:44:54,031 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)] === [2024-06-14 11:44:54,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1947937593, now seen corresponding path program 1 times [2024-06-14 11:44:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:54,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3717717] [2024-06-14 11:44:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:54,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:54,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:54,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3717717] [2024-06-14 11:44:54,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3717717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:54,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:54,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:44:54,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268066613] [2024-06-14 11:44:54,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:54,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:44:54,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:54,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:44:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:44:54,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-14 11:44:54,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 153 transitions, 1721 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:54,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:54,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-14 11:44:54,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:54,342 INFO L124 PetriNetUnfolderBase]: 510/1236 cut-off events. [2024-06-14 11:44:54,342 INFO L125 PetriNetUnfolderBase]: For 14015/14024 co-relation queries the response was YES. [2024-06-14 11:44:54,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5421 conditions, 1236 events. 510/1236 cut-off events. For 14015/14024 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8093 event pairs, 141 based on Foata normal form. 22/1241 useless extension candidates. Maximal degree in co-relation 5322. Up to 276 conditions per place. [2024-06-14 11:44:54,351 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 58 selfloop transitions, 54 changer transitions 0/164 dead transitions. [2024-06-14 11:44:54,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 164 transitions, 1906 flow [2024-06-14 11:44:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:44:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:44:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-14 11:44:54,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5672514619883041 [2024-06-14 11:44:54,352 INFO L175 Difference]: Start difference. First operand has 211 places, 153 transitions, 1721 flow. Second operand 9 states and 194 transitions. [2024-06-14 11:44:54,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 164 transitions, 1906 flow [2024-06-14 11:44:54,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 164 transitions, 1814 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 11:44:54,395 INFO L231 Difference]: Finished difference. Result has 212 places, 139 transitions, 1624 flow [2024-06-14 11:44:54,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1624, PETRI_PLACES=212, PETRI_TRANSITIONS=139} [2024-06-14 11:44:54,396 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 173 predicate places. [2024-06-14 11:44:54,396 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 139 transitions, 1624 flow [2024-06-14 11:44:54,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:54,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:54,397 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] [2024-06-14 11:44:54,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 11:44:54,397 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)] === [2024-06-14 11:44:54,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:54,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1955435962, now seen corresponding path program 1 times [2024-06-14 11:44:54,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:54,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877602872] [2024-06-14 11:44:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:54,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:54,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:54,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877602872] [2024-06-14 11:44:54,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877602872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:54,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:54,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:44:54,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443185067] [2024-06-14 11:44:54,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:54,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:44:54,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:54,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:44:54,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:44:54,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-14 11:44:54,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 139 transitions, 1624 flow. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:54,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:54,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-14 11:44:54,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:54,978 INFO L124 PetriNetUnfolderBase]: 954/2013 cut-off events. [2024-06-14 11:44:54,978 INFO L125 PetriNetUnfolderBase]: For 38761/38770 co-relation queries the response was YES. [2024-06-14 11:44:54,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9855 conditions, 2013 events. 954/2013 cut-off events. For 38761/38770 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12992 event pairs, 304 based on Foata normal form. 6/2009 useless extension candidates. Maximal degree in co-relation 9756. Up to 968 conditions per place. [2024-06-14 11:44:54,989 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 168 selfloop transitions, 50 changer transitions 0/224 dead transitions. [2024-06-14 11:44:54,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 224 transitions, 2912 flow [2024-06-14 11:44:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:44:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:44:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-14 11:44:54,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-14 11:44:54,995 INFO L175 Difference]: Start difference. First operand has 212 places, 139 transitions, 1624 flow. Second operand 11 states and 185 transitions. [2024-06-14 11:44:54,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 224 transitions, 2912 flow [2024-06-14 11:44:55,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 224 transitions, 2815 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-14 11:44:55,078 INFO L231 Difference]: Finished difference. Result has 223 places, 163 transitions, 2008 flow [2024-06-14 11:44:55,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2008, PETRI_PLACES=223, PETRI_TRANSITIONS=163} [2024-06-14 11:44:55,080 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 184 predicate places. [2024-06-14 11:44:55,081 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 163 transitions, 2008 flow [2024-06-14 11:44:55,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:55,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:55,083 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] [2024-06-14 11:44:55,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 11:44:55,086 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)] === [2024-06-14 11:44:55,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:55,087 INFO L85 PathProgramCache]: Analyzing trace with hash -386880230, now seen corresponding path program 2 times [2024-06-14 11:44:55,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:55,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262034212] [2024-06-14 11:44:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:55,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:55,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:55,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262034212] [2024-06-14 11:44:55,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262034212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:55,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:55,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:44:55,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750842514] [2024-06-14 11:44:55,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:55,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:44:55,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:55,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:44:55,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:44:55,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:55,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 163 transitions, 2008 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:55,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:55,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:55,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:55,714 INFO L124 PetriNetUnfolderBase]: 1026/2169 cut-off events. [2024-06-14 11:44:55,714 INFO L125 PetriNetUnfolderBase]: For 47009/47018 co-relation queries the response was YES. [2024-06-14 11:44:55,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11019 conditions, 2169 events. 1026/2169 cut-off events. For 47009/47018 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14343 event pairs, 316 based on Foata normal form. 14/2173 useless extension candidates. Maximal degree in co-relation 10912. Up to 1529 conditions per place. [2024-06-14 11:44:55,732 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 154 selfloop transitions, 46 changer transitions 0/206 dead transitions. [2024-06-14 11:44:55,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 206 transitions, 2681 flow [2024-06-14 11:44:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:44:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:44:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 203 transitions. [2024-06-14 11:44:55,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4109311740890688 [2024-06-14 11:44:55,733 INFO L175 Difference]: Start difference. First operand has 223 places, 163 transitions, 2008 flow. Second operand 13 states and 203 transitions. [2024-06-14 11:44:55,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 206 transitions, 2681 flow [2024-06-14 11:44:55,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 206 transitions, 2633 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-14 11:44:55,842 INFO L231 Difference]: Finished difference. Result has 236 places, 169 transitions, 2151 flow [2024-06-14 11:44:55,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2151, PETRI_PLACES=236, PETRI_TRANSITIONS=169} [2024-06-14 11:44:55,842 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 197 predicate places. [2024-06-14 11:44:55,843 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 169 transitions, 2151 flow [2024-06-14 11:44:55,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:55,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:55,843 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] [2024-06-14 11:44:55,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 11:44:55,843 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)] === [2024-06-14 11:44:55,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash -313059590, now seen corresponding path program 3 times [2024-06-14 11:44:55,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:55,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675121857] [2024-06-14 11:44:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:55,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:56,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675121857] [2024-06-14 11:44:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675121857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:56,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:44:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139570480] [2024-06-14 11:44:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:56,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:44:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:44:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:44:56,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:56,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 169 transitions, 2151 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:56,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:56,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:56,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:56,557 INFO L124 PetriNetUnfolderBase]: 1162/2453 cut-off events. [2024-06-14 11:44:56,557 INFO L125 PetriNetUnfolderBase]: For 68345/68354 co-relation queries the response was YES. [2024-06-14 11:44:56,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13346 conditions, 2453 events. 1162/2453 cut-off events. For 68345/68354 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16647 event pairs, 330 based on Foata normal form. 14/2457 useless extension candidates. Maximal degree in co-relation 13236. Up to 1379 conditions per place. [2024-06-14 11:44:56,580 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 168 selfloop transitions, 56 changer transitions 0/230 dead transitions. [2024-06-14 11:44:56,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 230 transitions, 3163 flow [2024-06-14 11:44:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-14 11:44:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-14 11:44:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 253 transitions. [2024-06-14 11:44:56,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161184210526316 [2024-06-14 11:44:56,582 INFO L175 Difference]: Start difference. First operand has 236 places, 169 transitions, 2151 flow. Second operand 16 states and 253 transitions. [2024-06-14 11:44:56,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 230 transitions, 3163 flow [2024-06-14 11:44:56,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 230 transitions, 3054 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 11:44:56,722 INFO L231 Difference]: Finished difference. Result has 250 places, 179 transitions, 2321 flow [2024-06-14 11:44:56,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2321, PETRI_PLACES=250, PETRI_TRANSITIONS=179} [2024-06-14 11:44:56,723 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 211 predicate places. [2024-06-14 11:44:56,723 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 179 transitions, 2321 flow [2024-06-14 11:44:56,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:56,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:56,723 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, 1] [2024-06-14 11:44:56,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 11:44:56,724 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)] === [2024-06-14 11:44:56,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1140173066, now seen corresponding path program 4 times [2024-06-14 11:44:56,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:56,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397787005] [2024-06-14 11:44:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:56,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:56,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:56,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397787005] [2024-06-14 11:44:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397787005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:56,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:56,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:44:56,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560932022] [2024-06-14 11:44:56,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:56,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:44:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:56,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:44:56,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:44:56,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:56,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 179 transitions, 2321 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:56,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:56,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:56,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:57,400 INFO L124 PetriNetUnfolderBase]: 1166/2473 cut-off events. [2024-06-14 11:44:57,400 INFO L125 PetriNetUnfolderBase]: For 72349/72358 co-relation queries the response was YES. [2024-06-14 11:44:57,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13656 conditions, 2473 events. 1166/2473 cut-off events. For 72349/72358 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16870 event pairs, 332 based on Foata normal form. 14/2477 useless extension candidates. Maximal degree in co-relation 13542. Up to 1379 conditions per place. [2024-06-14 11:44:57,421 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 165 selfloop transitions, 59 changer transitions 0/230 dead transitions. [2024-06-14 11:44:57,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 230 transitions, 3175 flow [2024-06-14 11:44:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 11:44:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 11:44:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 239 transitions. [2024-06-14 11:44:57,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192982456140351 [2024-06-14 11:44:57,423 INFO L175 Difference]: Start difference. First operand has 250 places, 179 transitions, 2321 flow. Second operand 15 states and 239 transitions. [2024-06-14 11:44:57,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 230 transitions, 3175 flow [2024-06-14 11:44:57,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 230 transitions, 3057 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-14 11:44:57,562 INFO L231 Difference]: Finished difference. Result has 261 places, 184 transitions, 2401 flow [2024-06-14 11:44:57,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2401, PETRI_PLACES=261, PETRI_TRANSITIONS=184} [2024-06-14 11:44:57,562 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 222 predicate places. [2024-06-14 11:44:57,562 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 184 transitions, 2401 flow [2024-06-14 11:44:57,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:57,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:57,563 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] [2024-06-14 11:44:57,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 11:44:57,563 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)] === [2024-06-14 11:44:57,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1034340380, now seen corresponding path program 5 times [2024-06-14 11:44:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:57,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044832017] [2024-06-14 11:44:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:57,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:57,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044832017] [2024-06-14 11:44:57,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044832017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:57,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:44:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874790711] [2024-06-14 11:44:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:57,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:44:57,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:57,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:44:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:44:57,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:57,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 184 transitions, 2401 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:57,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:57,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:57,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:58,197 INFO L124 PetriNetUnfolderBase]: 1154/2453 cut-off events. [2024-06-14 11:44:58,198 INFO L125 PetriNetUnfolderBase]: For 70943/70952 co-relation queries the response was YES. [2024-06-14 11:44:58,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13448 conditions, 2453 events. 1154/2453 cut-off events. For 70943/70952 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16733 event pairs, 344 based on Foata normal form. 14/2457 useless extension candidates. Maximal degree in co-relation 13331. Up to 1379 conditions per place. [2024-06-14 11:44:58,217 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 159 selfloop transitions, 58 changer transitions 0/223 dead transitions. [2024-06-14 11:44:58,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 223 transitions, 3105 flow [2024-06-14 11:44:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:44:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:44:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 211 transitions. [2024-06-14 11:44:58,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271255060728745 [2024-06-14 11:44:58,218 INFO L175 Difference]: Start difference. First operand has 261 places, 184 transitions, 2401 flow. Second operand 13 states and 211 transitions. [2024-06-14 11:44:58,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 223 transitions, 3105 flow [2024-06-14 11:44:58,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 223 transitions, 2981 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 11:44:58,382 INFO L231 Difference]: Finished difference. Result has 266 places, 184 transitions, 2397 flow [2024-06-14 11:44:58,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2397, PETRI_PLACES=266, PETRI_TRANSITIONS=184} [2024-06-14 11:44:58,382 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 227 predicate places. [2024-06-14 11:44:58,383 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 184 transitions, 2397 flow [2024-06-14 11:44:58,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:58,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:58,383 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] [2024-06-14 11:44:58,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 11:44:58,383 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)] === [2024-06-14 11:44:58,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1496259284, now seen corresponding path program 6 times [2024-06-14 11:44:58,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:58,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284864103] [2024-06-14 11:44:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:58,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:58,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:58,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284864103] [2024-06-14 11:44:58,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284864103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:58,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:58,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:44:58,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715015640] [2024-06-14 11:44:58,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:58,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:44:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:44:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:44:58,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:58,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 184 transitions, 2397 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:58,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:58,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:58,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:44:59,055 INFO L124 PetriNetUnfolderBase]: 1256/2663 cut-off events. [2024-06-14 11:44:59,055 INFO L125 PetriNetUnfolderBase]: For 84836/84845 co-relation queries the response was YES. [2024-06-14 11:44:59,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14857 conditions, 2663 events. 1256/2663 cut-off events. For 84836/84845 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18640 event pairs, 301 based on Foata normal form. 14/2667 useless extension candidates. Maximal degree in co-relation 14739. Up to 1043 conditions per place. [2024-06-14 11:44:59,079 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 143 selfloop transitions, 104 changer transitions 0/253 dead transitions. [2024-06-14 11:44:59,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 253 transitions, 3592 flow [2024-06-14 11:44:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-14 11:44:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-14 11:44:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 252 transitions. [2024-06-14 11:44:59,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2024-06-14 11:44:59,080 INFO L175 Difference]: Start difference. First operand has 266 places, 184 transitions, 2397 flow. Second operand 16 states and 252 transitions. [2024-06-14 11:44:59,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 253 transitions, 3592 flow [2024-06-14 11:44:59,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 253 transitions, 3452 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-14 11:44:59,266 INFO L231 Difference]: Finished difference. Result has 271 places, 201 transitions, 2726 flow [2024-06-14 11:44:59,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2726, PETRI_PLACES=271, PETRI_TRANSITIONS=201} [2024-06-14 11:44:59,267 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 232 predicate places. [2024-06-14 11:44:59,267 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 201 transitions, 2726 flow [2024-06-14 11:44:59,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:59,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:44:59,267 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] [2024-06-14 11:44:59,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 11:44:59,268 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)] === [2024-06-14 11:44:59,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:44:59,268 INFO L85 PathProgramCache]: Analyzing trace with hash 239118918, now seen corresponding path program 7 times [2024-06-14 11:44:59,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:44:59,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879696737] [2024-06-14 11:44:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:44:59,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:44:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:44:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:44:59,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:44:59,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879696737] [2024-06-14 11:44:59,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879696737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:44:59,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:44:59,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:44:59,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681346128] [2024-06-14 11:44:59,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:44:59,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:44:59,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:44:59,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:44:59,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:44:59,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:44:59,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 201 transitions, 2726 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:44:59,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:44:59,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:44:59,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:00,076 INFO L124 PetriNetUnfolderBase]: 1320/2803 cut-off events. [2024-06-14 11:45:00,076 INFO L125 PetriNetUnfolderBase]: For 94776/94785 co-relation queries the response was YES. [2024-06-14 11:45:00,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16114 conditions, 2803 events. 1320/2803 cut-off events. For 94776/94785 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 19870 event pairs, 308 based on Foata normal form. 14/2807 useless extension candidates. Maximal degree in co-relation 15997. Up to 915 conditions per place. [2024-06-14 11:45:00,099 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 162 selfloop transitions, 95 changer transitions 0/263 dead transitions. [2024-06-14 11:45:00,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 263 transitions, 3975 flow [2024-06-14 11:45:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-14 11:45:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-14 11:45:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 265 transitions. [2024-06-14 11:45:00,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4102167182662539 [2024-06-14 11:45:00,101 INFO L175 Difference]: Start difference. First operand has 271 places, 201 transitions, 2726 flow. Second operand 17 states and 265 transitions. [2024-06-14 11:45:00,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 263 transitions, 3975 flow [2024-06-14 11:45:00,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 263 transitions, 3794 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-14 11:45:00,366 INFO L231 Difference]: Finished difference. Result has 285 places, 208 transitions, 2871 flow [2024-06-14 11:45:00,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2558, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2871, PETRI_PLACES=285, PETRI_TRANSITIONS=208} [2024-06-14 11:45:00,367 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 246 predicate places. [2024-06-14 11:45:00,367 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 208 transitions, 2871 flow [2024-06-14 11:45:00,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:00,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:00,367 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] [2024-06-14 11:45:00,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 11:45:00,368 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)] === [2024-06-14 11:45:00,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1668154528, now seen corresponding path program 8 times [2024-06-14 11:45:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:00,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885661506] [2024-06-14 11:45:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:00,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885661506] [2024-06-14 11:45:00,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885661506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:00,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:00,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304347425] [2024-06-14 11:45:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:00,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:00,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:00,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:00,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 208 transitions, 2871 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:00,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:00,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:00,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:01,101 INFO L124 PetriNetUnfolderBase]: 1338/2849 cut-off events. [2024-06-14 11:45:01,102 INFO L125 PetriNetUnfolderBase]: For 102720/102729 co-relation queries the response was YES. [2024-06-14 11:45:01,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16450 conditions, 2849 events. 1338/2849 cut-off events. For 102720/102729 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20308 event pairs, 329 based on Foata normal form. 14/2853 useless extension candidates. Maximal degree in co-relation 16331. Up to 1159 conditions per place. [2024-06-14 11:45:01,129 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 143 selfloop transitions, 108 changer transitions 0/257 dead transitions. [2024-06-14 11:45:01,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 257 transitions, 3793 flow [2024-06-14 11:45:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 11:45:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 11:45:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 229 transitions. [2024-06-14 11:45:01,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43045112781954886 [2024-06-14 11:45:01,131 INFO L175 Difference]: Start difference. First operand has 285 places, 208 transitions, 2871 flow. Second operand 14 states and 229 transitions. [2024-06-14 11:45:01,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 257 transitions, 3793 flow [2024-06-14 11:45:01,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 257 transitions, 3552 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-06-14 11:45:01,415 INFO L231 Difference]: Finished difference. Result has 287 places, 209 transitions, 2874 flow [2024-06-14 11:45:01,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2874, PETRI_PLACES=287, PETRI_TRANSITIONS=209} [2024-06-14 11:45:01,416 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 248 predicate places. [2024-06-14 11:45:01,416 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 209 transitions, 2874 flow [2024-06-14 11:45:01,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:01,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:01,416 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] [2024-06-14 11:45:01,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 11:45:01,417 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)] === [2024-06-14 11:45:01,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash -597159064, now seen corresponding path program 9 times [2024-06-14 11:45:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185708313] [2024-06-14 11:45:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:01,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:01,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:01,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185708313] [2024-06-14 11:45:01,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185708313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:01,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:01,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:01,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684919608] [2024-06-14 11:45:01,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:01,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:01,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:01,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 209 transitions, 2874 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:01,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:01,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:01,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:02,144 INFO L124 PetriNetUnfolderBase]: 1342/2869 cut-off events. [2024-06-14 11:45:02,144 INFO L125 PetriNetUnfolderBase]: For 105655/105664 co-relation queries the response was YES. [2024-06-14 11:45:02,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16275 conditions, 2869 events. 1342/2869 cut-off events. For 105655/105664 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20507 event pairs, 340 based on Foata normal form. 14/2873 useless extension candidates. Maximal degree in co-relation 16163. Up to 915 conditions per place. [2024-06-14 11:45:02,169 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 165 selfloop transitions, 93 changer transitions 0/264 dead transitions. [2024-06-14 11:45:02,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 264 transitions, 3913 flow [2024-06-14 11:45:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 11:45:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 11:45:02,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 246 transitions. [2024-06-14 11:45:02,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-06-14 11:45:02,170 INFO L175 Difference]: Start difference. First operand has 287 places, 209 transitions, 2874 flow. Second operand 15 states and 246 transitions. [2024-06-14 11:45:02,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 264 transitions, 3913 flow [2024-06-14 11:45:02,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 264 transitions, 3690 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:45:02,393 INFO L231 Difference]: Finished difference. Result has 293 places, 212 transitions, 2890 flow [2024-06-14 11:45:02,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2655, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2890, PETRI_PLACES=293, PETRI_TRANSITIONS=212} [2024-06-14 11:45:02,397 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 254 predicate places. [2024-06-14 11:45:02,397 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 212 transitions, 2890 flow [2024-06-14 11:45:02,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:02,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:02,397 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] [2024-06-14 11:45:02,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 11:45:02,398 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)] === [2024-06-14 11:45:02,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash -425263820, now seen corresponding path program 10 times [2024-06-14 11:45:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419396441] [2024-06-14 11:45:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:02,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:02,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419396441] [2024-06-14 11:45:02,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419396441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:02,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:02,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:02,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576491107] [2024-06-14 11:45:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:02,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:02,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:02,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:02,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:02,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 212 transitions, 2890 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:02,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:02,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:02,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:03,123 INFO L124 PetriNetUnfolderBase]: 1330/2849 cut-off events. [2024-06-14 11:45:03,123 INFO L125 PetriNetUnfolderBase]: For 105565/105574 co-relation queries the response was YES. [2024-06-14 11:45:03,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15952 conditions, 2849 events. 1330/2849 cut-off events. For 105565/105574 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 20384 event pairs, 334 based on Foata normal form. 14/2853 useless extension candidates. Maximal degree in co-relation 15838. Up to 915 conditions per place. [2024-06-14 11:45:03,148 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 170 selfloop transitions, 94 changer transitions 0/270 dead transitions. [2024-06-14 11:45:03,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 270 transitions, 3942 flow [2024-06-14 11:45:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-14 11:45:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-14 11:45:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 273 transitions. [2024-06-14 11:45:03,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42260061919504643 [2024-06-14 11:45:03,150 INFO L175 Difference]: Start difference. First operand has 293 places, 212 transitions, 2890 flow. Second operand 17 states and 273 transitions. [2024-06-14 11:45:03,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 270 transitions, 3942 flow [2024-06-14 11:45:03,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 270 transitions, 3750 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 11:45:03,397 INFO L231 Difference]: Finished difference. Result has 301 places, 212 transitions, 2890 flow [2024-06-14 11:45:03,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2698, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2890, PETRI_PLACES=301, PETRI_TRANSITIONS=212} [2024-06-14 11:45:03,397 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 262 predicate places. [2024-06-14 11:45:03,398 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 212 transitions, 2890 flow [2024-06-14 11:45:03,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:03,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:03,398 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] [2024-06-14 11:45:03,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 11:45:03,398 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)] === [2024-06-14 11:45:03,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash -526752288, now seen corresponding path program 11 times [2024-06-14 11:45:03,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:03,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044621952] [2024-06-14 11:45:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:03,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:03,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044621952] [2024-06-14 11:45:03,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044621952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:03,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:03,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:45:03,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006872733] [2024-06-14 11:45:03,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:03,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:45:03,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:03,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:45:03,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:45:03,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-14 11:45:03,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 212 transitions, 2890 flow. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:03,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:03,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-14 11:45:03,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:04,040 INFO L124 PetriNetUnfolderBase]: 1324/2839 cut-off events. [2024-06-14 11:45:04,041 INFO L125 PetriNetUnfolderBase]: For 104104/104113 co-relation queries the response was YES. [2024-06-14 11:45:04,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15829 conditions, 2839 events. 1324/2839 cut-off events. For 104104/104113 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20266 event pairs, 582 based on Foata normal form. 10/2839 useless extension candidates. Maximal degree in co-relation 15714. Up to 2420 conditions per place. [2024-06-14 11:45:04,066 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 202 selfloop transitions, 33 changer transitions 0/241 dead transitions. [2024-06-14 11:45:04,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 241 transitions, 3557 flow [2024-06-14 11:45:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:45:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:45:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2024-06-14 11:45:04,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2024-06-14 11:45:04,067 INFO L175 Difference]: Start difference. First operand has 301 places, 212 transitions, 2890 flow. Second operand 12 states and 174 transitions. [2024-06-14 11:45:04,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 241 transitions, 3557 flow [2024-06-14 11:45:04,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 241 transitions, 3339 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-06-14 11:45:04,356 INFO L231 Difference]: Finished difference. Result has 298 places, 213 transitions, 2764 flow [2024-06-14 11:45:04,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2764, PETRI_PLACES=298, PETRI_TRANSITIONS=213} [2024-06-14 11:45:04,356 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 259 predicate places. [2024-06-14 11:45:04,357 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 213 transitions, 2764 flow [2024-06-14 11:45:04,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:04,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:04,357 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, 1] [2024-06-14 11:45:04,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 11:45:04,358 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)] === [2024-06-14 11:45:04,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1774614072, now seen corresponding path program 12 times [2024-06-14 11:45:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:04,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286015100] [2024-06-14 11:45:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:04,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:04,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286015100] [2024-06-14 11:45:04,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286015100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:04,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:04,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:45:04,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347906902] [2024-06-14 11:45:04,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:04,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:45:04,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:04,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:45:04,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:45:04,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:04,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 213 transitions, 2764 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:04,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:04,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:04,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:04,910 INFO L124 PetriNetUnfolderBase]: 1326/2847 cut-off events. [2024-06-14 11:45:04,910 INFO L125 PetriNetUnfolderBase]: For 106878/106887 co-relation queries the response was YES. [2024-06-14 11:45:04,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15597 conditions, 2847 events. 1326/2847 cut-off events. For 106878/106887 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20380 event pairs, 276 based on Foata normal form. 6/2842 useless extension candidates. Maximal degree in co-relation 15484. Up to 763 conditions per place. [2024-06-14 11:45:04,936 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 146 selfloop transitions, 97 changer transitions 0/249 dead transitions. [2024-06-14 11:45:04,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 249 transitions, 3614 flow [2024-06-14 11:45:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:45:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:45:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-14 11:45:04,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276315789473684 [2024-06-14 11:45:04,937 INFO L175 Difference]: Start difference. First operand has 298 places, 213 transitions, 2764 flow. Second operand 12 states and 195 transitions. [2024-06-14 11:45:04,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 249 transitions, 3614 flow [2024-06-14 11:45:05,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 249 transitions, 3529 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 11:45:05,189 INFO L231 Difference]: Finished difference. Result has 300 places, 213 transitions, 2879 flow [2024-06-14 11:45:05,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2879, PETRI_PLACES=300, PETRI_TRANSITIONS=213} [2024-06-14 11:45:05,190 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 261 predicate places. [2024-06-14 11:45:05,190 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 213 transitions, 2879 flow [2024-06-14 11:45:05,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:05,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:05,190 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] [2024-06-14 11:45:05,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 11:45:05,191 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)] === [2024-06-14 11:45:05,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1767631588, now seen corresponding path program 13 times [2024-06-14 11:45:05,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:05,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181749212] [2024-06-14 11:45:05,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:05,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:05,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:05,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181749212] [2024-06-14 11:45:05,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181749212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:05,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:05,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:45:05,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198038203] [2024-06-14 11:45:05,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:05,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:45:05,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:05,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:45:05,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:45:05,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:05,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 213 transitions, 2879 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:05,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:05,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:05,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:05,798 INFO L124 PetriNetUnfolderBase]: 1320/2839 cut-off events. [2024-06-14 11:45:05,799 INFO L125 PetriNetUnfolderBase]: For 108842/108848 co-relation queries the response was YES. [2024-06-14 11:45:05,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15736 conditions, 2839 events. 1320/2839 cut-off events. For 108842/108848 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20302 event pairs, 540 based on Foata normal form. 8/2837 useless extension candidates. Maximal degree in co-relation 15623. Up to 2191 conditions per place. [2024-06-14 11:45:05,825 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 191 selfloop transitions, 44 changer transitions 0/241 dead transitions. [2024-06-14 11:45:05,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 241 transitions, 3531 flow [2024-06-14 11:45:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:45:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:45:05,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-14 11:45:05,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-14 11:45:05,827 INFO L175 Difference]: Start difference. First operand has 300 places, 213 transitions, 2879 flow. Second operand 10 states and 167 transitions. [2024-06-14 11:45:05,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 241 transitions, 3531 flow [2024-06-14 11:45:06,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 241 transitions, 3335 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 11:45:06,073 INFO L231 Difference]: Finished difference. Result has 301 places, 213 transitions, 2781 flow [2024-06-14 11:45:06,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2781, PETRI_PLACES=301, PETRI_TRANSITIONS=213} [2024-06-14 11:45:06,074 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 262 predicate places. [2024-06-14 11:45:06,074 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 213 transitions, 2781 flow [2024-06-14 11:45:06,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:06,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:06,075 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] [2024-06-14 11:45:06,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 11:45:06,075 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)] === [2024-06-14 11:45:06,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash 650139046, now seen corresponding path program 1 times [2024-06-14 11:45:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:06,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992125439] [2024-06-14 11:45:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:06,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:06,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992125439] [2024-06-14 11:45:06,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992125439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:06,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:06,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:06,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020407116] [2024-06-14 11:45:06,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:06,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:06,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:06,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:06,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:06,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:06,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 213 transitions, 2781 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:06,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:06,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:06,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:06,729 INFO L124 PetriNetUnfolderBase]: 1336/2875 cut-off events. [2024-06-14 11:45:06,730 INFO L125 PetriNetUnfolderBase]: For 112425/112431 co-relation queries the response was YES. [2024-06-14 11:45:06,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15795 conditions, 2875 events. 1336/2875 cut-off events. For 112425/112431 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20616 event pairs, 566 based on Foata normal form. 8/2873 useless extension candidates. Maximal degree in co-relation 15683. Up to 2371 conditions per place. [2024-06-14 11:45:06,756 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 207 selfloop transitions, 36 changer transitions 0/249 dead transitions. [2024-06-14 11:45:06,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 249 transitions, 3492 flow [2024-06-14 11:45:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:45:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:45:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-06-14 11:45:06,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41295546558704455 [2024-06-14 11:45:06,757 INFO L175 Difference]: Start difference. First operand has 301 places, 213 transitions, 2781 flow. Second operand 13 states and 204 transitions. [2024-06-14 11:45:06,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 249 transitions, 3492 flow [2024-06-14 11:45:07,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 249 transitions, 3344 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 11:45:07,033 INFO L231 Difference]: Finished difference. Result has 303 places, 214 transitions, 2722 flow [2024-06-14 11:45:07,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2635, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2722, PETRI_PLACES=303, PETRI_TRANSITIONS=214} [2024-06-14 11:45:07,033 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 264 predicate places. [2024-06-14 11:45:07,033 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 214 transitions, 2722 flow [2024-06-14 11:45:07,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:07,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:07,034 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] [2024-06-14 11:45:07,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 11:45:07,034 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)] === [2024-06-14 11:45:07,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash 614415172, now seen corresponding path program 2 times [2024-06-14 11:45:07,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:07,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679654236] [2024-06-14 11:45:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:07,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:07,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679654236] [2024-06-14 11:45:07,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679654236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:07,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:07,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:07,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644265689] [2024-06-14 11:45:07,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:07,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:07,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:07,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:07,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:07,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 214 transitions, 2722 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:07,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:07,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:07,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:07,808 INFO L124 PetriNetUnfolderBase]: 1374/2957 cut-off events. [2024-06-14 11:45:07,808 INFO L125 PetriNetUnfolderBase]: For 123244/123250 co-relation queries the response was YES. [2024-06-14 11:45:07,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16402 conditions, 2957 events. 1374/2957 cut-off events. For 123244/123250 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 21297 event pairs, 563 based on Foata normal form. 8/2955 useless extension candidates. Maximal degree in co-relation 16291. Up to 2264 conditions per place. [2024-06-14 11:45:07,835 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 223 selfloop transitions, 43 changer transitions 0/272 dead transitions. [2024-06-14 11:45:07,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 272 transitions, 3830 flow [2024-06-14 11:45:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-14 11:45:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-14 11:45:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 290 transitions. [2024-06-14 11:45:07,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40166204986149584 [2024-06-14 11:45:07,837 INFO L175 Difference]: Start difference. First operand has 303 places, 214 transitions, 2722 flow. Second operand 19 states and 290 transitions. [2024-06-14 11:45:07,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 272 transitions, 3830 flow [2024-06-14 11:45:08,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 272 transitions, 3755 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:45:08,064 INFO L231 Difference]: Finished difference. Result has 314 places, 218 transitions, 2798 flow [2024-06-14 11:45:08,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2798, PETRI_PLACES=314, PETRI_TRANSITIONS=218} [2024-06-14 11:45:08,065 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 275 predicate places. [2024-06-14 11:45:08,065 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 218 transitions, 2798 flow [2024-06-14 11:45:08,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:08,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:08,065 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] [2024-06-14 11:45:08,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 11:45:08,066 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)] === [2024-06-14 11:45:08,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1414419748, now seen corresponding path program 3 times [2024-06-14 11:45:08,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:08,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397938453] [2024-06-14 11:45:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:08,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397938453] [2024-06-14 11:45:08,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397938453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:08,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:08,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:08,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959748038] [2024-06-14 11:45:08,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:08,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:08,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:08,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:08,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 218 transitions, 2798 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:08,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:08,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:08,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:08,816 INFO L124 PetriNetUnfolderBase]: 1390/2993 cut-off events. [2024-06-14 11:45:08,816 INFO L125 PetriNetUnfolderBase]: For 132883/132889 co-relation queries the response was YES. [2024-06-14 11:45:08,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16901 conditions, 2993 events. 1390/2993 cut-off events. For 132883/132889 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 21605 event pairs, 564 based on Foata normal form. 8/2991 useless extension candidates. Maximal degree in co-relation 16787. Up to 2264 conditions per place. [2024-06-14 11:45:08,843 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 221 selfloop transitions, 45 changer transitions 0/272 dead transitions. [2024-06-14 11:45:08,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 272 transitions, 3806 flow [2024-06-14 11:45:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-14 11:45:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-14 11:45:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 286 transitions. [2024-06-14 11:45:08,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961218836565097 [2024-06-14 11:45:08,844 INFO L175 Difference]: Start difference. First operand has 314 places, 218 transitions, 2798 flow. Second operand 19 states and 286 transitions. [2024-06-14 11:45:08,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 272 transitions, 3806 flow [2024-06-14 11:45:09,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 272 transitions, 3696 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-06-14 11:45:09,144 INFO L231 Difference]: Finished difference. Result has 323 places, 221 transitions, 2842 flow [2024-06-14 11:45:09,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2842, PETRI_PLACES=323, PETRI_TRANSITIONS=221} [2024-06-14 11:45:09,145 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 284 predicate places. [2024-06-14 11:45:09,145 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 221 transitions, 2842 flow [2024-06-14 11:45:09,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:09,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:09,145 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] [2024-06-14 11:45:09,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 11:45:09,146 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)] === [2024-06-14 11:45:09,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:09,146 INFO L85 PathProgramCache]: Analyzing trace with hash 391870904, now seen corresponding path program 4 times [2024-06-14 11:45:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:09,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517625519] [2024-06-14 11:45:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:09,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:09,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:09,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517625519] [2024-06-14 11:45:09,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517625519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:09,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:09,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756830393] [2024-06-14 11:45:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:09,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:09,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:09,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 221 transitions, 2842 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:09,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:09,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:09,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:09,875 INFO L124 PetriNetUnfolderBase]: 1384/2983 cut-off events. [2024-06-14 11:45:09,876 INFO L125 PetriNetUnfolderBase]: For 134246/134252 co-relation queries the response was YES. [2024-06-14 11:45:09,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16830 conditions, 2983 events. 1384/2983 cut-off events. For 134246/134252 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 21564 event pairs, 570 based on Foata normal form. 8/2981 useless extension candidates. Maximal degree in co-relation 16712. Up to 2264 conditions per place. [2024-06-14 11:45:09,904 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 214 selfloop transitions, 45 changer transitions 0/265 dead transitions. [2024-06-14 11:45:09,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 265 transitions, 3682 flow [2024-06-14 11:45:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-14 11:45:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-14 11:45:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 258 transitions. [2024-06-14 11:45:09,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993808049535604 [2024-06-14 11:45:09,906 INFO L175 Difference]: Start difference. First operand has 323 places, 221 transitions, 2842 flow. Second operand 17 states and 258 transitions. [2024-06-14 11:45:09,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 265 transitions, 3682 flow [2024-06-14 11:45:10,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 265 transitions, 3575 flow, removed 14 selfloop flow, removed 14 redundant places. [2024-06-14 11:45:10,188 INFO L231 Difference]: Finished difference. Result has 326 places, 221 transitions, 2829 flow [2024-06-14 11:45:10,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2829, PETRI_PLACES=326, PETRI_TRANSITIONS=221} [2024-06-14 11:45:10,189 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 287 predicate places. [2024-06-14 11:45:10,189 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 221 transitions, 2829 flow [2024-06-14 11:45:10,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:10,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:10,190 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] [2024-06-14 11:45:10,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 11:45:10,190 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)] === [2024-06-14 11:45:10,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1345434810, now seen corresponding path program 5 times [2024-06-14 11:45:10,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:10,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670608660] [2024-06-14 11:45:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:10,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:10,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:10,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670608660] [2024-06-14 11:45:10,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670608660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:10,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:10,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:10,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5923357] [2024-06-14 11:45:10,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:10,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:10,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:10,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:10,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:10,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 221 transitions, 2829 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:10,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:10,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:10,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:10,963 INFO L124 PetriNetUnfolderBase]: 1407/3032 cut-off events. [2024-06-14 11:45:10,963 INFO L125 PetriNetUnfolderBase]: For 146755/146761 co-relation queries the response was YES. [2024-06-14 11:45:10,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17393 conditions, 3032 events. 1407/3032 cut-off events. For 146755/146761 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 21958 event pairs, 524 based on Foata normal form. 8/3030 useless extension candidates. Maximal degree in co-relation 17274. Up to 2161 conditions per place. [2024-06-14 11:45:10,991 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 201 selfloop transitions, 59 changer transitions 0/266 dead transitions. [2024-06-14 11:45:10,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 266 transitions, 3804 flow [2024-06-14 11:45:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-14 11:45:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-14 11:45:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 244 transitions. [2024-06-14 11:45:10,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2024-06-14 11:45:10,993 INFO L175 Difference]: Start difference. First operand has 326 places, 221 transitions, 2829 flow. Second operand 16 states and 244 transitions. [2024-06-14 11:45:10,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 266 transitions, 3804 flow [2024-06-14 11:45:11,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 266 transitions, 3719 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-14 11:45:11,310 INFO L231 Difference]: Finished difference. Result has 328 places, 224 transitions, 2919 flow [2024-06-14 11:45:11,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2919, PETRI_PLACES=328, PETRI_TRANSITIONS=224} [2024-06-14 11:45:11,310 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 289 predicate places. [2024-06-14 11:45:11,310 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 224 transitions, 2919 flow [2024-06-14 11:45:11,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:11,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:11,311 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] [2024-06-14 11:45:11,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 11:45:11,311 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)] === [2024-06-14 11:45:11,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:11,311 INFO L85 PathProgramCache]: Analyzing trace with hash -52401952, now seen corresponding path program 6 times [2024-06-14 11:45:11,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:11,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589665465] [2024-06-14 11:45:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:11,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:11,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589665465] [2024-06-14 11:45:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589665465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:11,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:11,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:11,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584142287] [2024-06-14 11:45:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:11,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:11,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:11,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:11,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 224 transitions, 2919 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:11,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:11,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:11,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:12,173 INFO L124 PetriNetUnfolderBase]: 1423/3068 cut-off events. [2024-06-14 11:45:12,173 INFO L125 PetriNetUnfolderBase]: For 157354/157360 co-relation queries the response was YES. [2024-06-14 11:45:12,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17921 conditions, 3068 events. 1423/3068 cut-off events. For 157354/157360 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22233 event pairs, 524 based on Foata normal form. 8/3066 useless extension candidates. Maximal degree in co-relation 17802. Up to 2116 conditions per place. [2024-06-14 11:45:12,200 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 210 selfloop transitions, 59 changer transitions 0/275 dead transitions. [2024-06-14 11:45:12,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 275 transitions, 4124 flow [2024-06-14 11:45:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-14 11:45:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-14 11:45:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 261 transitions. [2024-06-14 11:45:12,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040247678018576 [2024-06-14 11:45:12,201 INFO L175 Difference]: Start difference. First operand has 328 places, 224 transitions, 2919 flow. Second operand 17 states and 261 transitions. [2024-06-14 11:45:12,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 275 transitions, 4124 flow [2024-06-14 11:45:12,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 275 transitions, 3942 flow, removed 30 selfloop flow, removed 15 redundant places. [2024-06-14 11:45:12,539 INFO L231 Difference]: Finished difference. Result has 330 places, 227 transitions, 2916 flow [2024-06-14 11:45:12,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2916, PETRI_PLACES=330, PETRI_TRANSITIONS=227} [2024-06-14 11:45:12,541 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 291 predicate places. [2024-06-14 11:45:12,541 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 227 transitions, 2916 flow [2024-06-14 11:45:12,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:12,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:12,541 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] [2024-06-14 11:45:12,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 11:45:12,542 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)] === [2024-06-14 11:45:12,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1833596704, now seen corresponding path program 7 times [2024-06-14 11:45:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:12,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485188551] [2024-06-14 11:45:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:12,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:12,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485188551] [2024-06-14 11:45:12,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485188551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:12,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:12,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:45:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864196991] [2024-06-14 11:45:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:12,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:45:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:45:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:45:12,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:12,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 227 transitions, 2916 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:12,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:12,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:12,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:13,226 INFO L124 PetriNetUnfolderBase]: 1409/3034 cut-off events. [2024-06-14 11:45:13,226 INFO L125 PetriNetUnfolderBase]: For 153945/153951 co-relation queries the response was YES. [2024-06-14 11:45:13,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17419 conditions, 3034 events. 1409/3034 cut-off events. For 153945/153951 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 21958 event pairs, 464 based on Foata normal form. 8/3032 useless extension candidates. Maximal degree in co-relation 17302. Up to 1776 conditions per place. [2024-06-14 11:45:13,253 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 199 selfloop transitions, 60 changer transitions 0/265 dead transitions. [2024-06-14 11:45:13,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 265 transitions, 3846 flow [2024-06-14 11:45:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:45:13,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:45:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-14 11:45:13,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-14 11:45:13,254 INFO L175 Difference]: Start difference. First operand has 330 places, 227 transitions, 2916 flow. Second operand 12 states and 198 transitions. [2024-06-14 11:45:13,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 265 transitions, 3846 flow [2024-06-14 11:45:13,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 265 transitions, 3665 flow, removed 20 selfloop flow, removed 14 redundant places. [2024-06-14 11:45:13,637 INFO L231 Difference]: Finished difference. Result has 328 places, 227 transitions, 2859 flow [2024-06-14 11:45:13,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2859, PETRI_PLACES=328, PETRI_TRANSITIONS=227} [2024-06-14 11:45:13,638 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 289 predicate places. [2024-06-14 11:45:13,639 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 227 transitions, 2859 flow [2024-06-14 11:45:13,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:13,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:13,639 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] [2024-06-14 11:45:13,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 11:45:13,639 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)] === [2024-06-14 11:45:13,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2056358972, now seen corresponding path program 8 times [2024-06-14 11:45:13,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:13,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568737294] [2024-06-14 11:45:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:13,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:13,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:13,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568737294] [2024-06-14 11:45:13,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568737294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:13,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:13,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:13,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415792708] [2024-06-14 11:45:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:13,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:13,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 227 transitions, 2859 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:13,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:13,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:13,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:14,408 INFO L124 PetriNetUnfolderBase]: 1418/3061 cut-off events. [2024-06-14 11:45:14,408 INFO L125 PetriNetUnfolderBase]: For 162128/162134 co-relation queries the response was YES. [2024-06-14 11:45:14,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17551 conditions, 3061 events. 1418/3061 cut-off events. For 162128/162134 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22231 event pairs, 534 based on Foata normal form. 8/3059 useless extension candidates. Maximal degree in co-relation 17435. Up to 2192 conditions per place. [2024-06-14 11:45:14,439 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 202 selfloop transitions, 61 changer transitions 0/269 dead transitions. [2024-06-14 11:45:14,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 269 transitions, 3721 flow [2024-06-14 11:45:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-14 11:45:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-14 11:45:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 243 transitions. [2024-06-14 11:45:14,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996710526315789 [2024-06-14 11:45:14,440 INFO L175 Difference]: Start difference. First operand has 328 places, 227 transitions, 2859 flow. Second operand 16 states and 243 transitions. [2024-06-14 11:45:14,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 269 transitions, 3721 flow [2024-06-14 11:45:14,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 269 transitions, 3627 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:45:14,838 INFO L231 Difference]: Finished difference. Result has 335 places, 228 transitions, 2905 flow [2024-06-14 11:45:14,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2905, PETRI_PLACES=335, PETRI_TRANSITIONS=228} [2024-06-14 11:45:14,839 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 296 predicate places. [2024-06-14 11:45:14,839 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 228 transitions, 2905 flow [2024-06-14 11:45:14,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:14,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:14,839 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] [2024-06-14 11:45:14,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 11:45:14,840 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)] === [2024-06-14 11:45:14,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:14,840 INFO L85 PathProgramCache]: Analyzing trace with hash 747602624, now seen corresponding path program 9 times [2024-06-14 11:45:14,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:14,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757533899] [2024-06-14 11:45:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:14,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:15,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:15,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757533899] [2024-06-14 11:45:15,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757533899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:15,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:15,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:15,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178164611] [2024-06-14 11:45:15,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:15,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:15,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:15,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:15,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:15,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:15,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 228 transitions, 2905 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:15,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:15,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:15,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:15,635 INFO L124 PetriNetUnfolderBase]: 1434/3097 cut-off events. [2024-06-14 11:45:15,635 INFO L125 PetriNetUnfolderBase]: For 173701/173707 co-relation queries the response was YES. [2024-06-14 11:45:15,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18063 conditions, 3097 events. 1434/3097 cut-off events. For 173701/173707 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22525 event pairs, 532 based on Foata normal form. 8/3095 useless extension candidates. Maximal degree in co-relation 17946. Up to 2109 conditions per place. [2024-06-14 11:45:15,663 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 222 selfloop transitions, 59 changer transitions 0/287 dead transitions. [2024-06-14 11:45:15,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 287 transitions, 3964 flow [2024-06-14 11:45:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-14 11:45:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-14 11:45:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 314 transitions. [2024-06-14 11:45:15,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39348370927318294 [2024-06-14 11:45:15,665 INFO L175 Difference]: Start difference. First operand has 335 places, 228 transitions, 2905 flow. Second operand 21 states and 314 transitions. [2024-06-14 11:45:15,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 287 transitions, 3964 flow [2024-06-14 11:45:16,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 287 transitions, 3836 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 11:45:16,157 INFO L231 Difference]: Finished difference. Result has 344 places, 230 transitions, 2928 flow [2024-06-14 11:45:16,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2928, PETRI_PLACES=344, PETRI_TRANSITIONS=230} [2024-06-14 11:45:16,158 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 305 predicate places. [2024-06-14 11:45:16,158 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 230 transitions, 2928 flow [2024-06-14 11:45:16,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:16,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:16,158 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] [2024-06-14 11:45:16,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 11:45:16,158 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)] === [2024-06-14 11:45:16,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:16,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1831399550, now seen corresponding path program 10 times [2024-06-14 11:45:16,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:16,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222429006] [2024-06-14 11:45:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:16,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:16,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:16,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222429006] [2024-06-14 11:45:16,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222429006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:16,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:16,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:16,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831036956] [2024-06-14 11:45:16,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:16,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:16,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:16,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 230 transitions, 2928 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:16,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:16,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:16,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:16,980 INFO L124 PetriNetUnfolderBase]: 1428/3087 cut-off events. [2024-06-14 11:45:16,980 INFO L125 PetriNetUnfolderBase]: For 174745/174751 co-relation queries the response was YES. [2024-06-14 11:45:17,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17949 conditions, 3087 events. 1428/3087 cut-off events. For 174745/174751 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22472 event pairs, 536 based on Foata normal form. 8/3085 useless extension candidates. Maximal degree in co-relation 17830. Up to 2109 conditions per place. [2024-06-14 11:45:17,009 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 215 selfloop transitions, 59 changer transitions 0/280 dead transitions. [2024-06-14 11:45:17,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 280 transitions, 3832 flow [2024-06-14 11:45:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-14 11:45:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-14 11:45:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 286 transitions. [2024-06-14 11:45:17,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961218836565097 [2024-06-14 11:45:17,010 INFO L175 Difference]: Start difference. First operand has 344 places, 230 transitions, 2928 flow. Second operand 19 states and 286 transitions. [2024-06-14 11:45:17,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 280 transitions, 3832 flow [2024-06-14 11:45:17,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 280 transitions, 3690 flow, removed 8 selfloop flow, removed 17 redundant places. [2024-06-14 11:45:17,514 INFO L231 Difference]: Finished difference. Result has 346 places, 230 transitions, 2908 flow [2024-06-14 11:45:17,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2908, PETRI_PLACES=346, PETRI_TRANSITIONS=230} [2024-06-14 11:45:17,514 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 307 predicate places. [2024-06-14 11:45:17,514 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 230 transitions, 2908 flow [2024-06-14 11:45:17,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:17,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:17,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:17,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 11:45:17,515 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)] === [2024-06-14 11:45:17,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash 532731211, now seen corresponding path program 1 times [2024-06-14 11:45:17,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:17,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360452268] [2024-06-14 11:45:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:17,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360452268] [2024-06-14 11:45:17,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360452268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:17,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:17,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:45:17,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518585144] [2024-06-14 11:45:17,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:17,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:45:17,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:17,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:45:17,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:45:17,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:17,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 230 transitions, 2908 flow. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:17,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:17,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:17,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:18,198 INFO L124 PetriNetUnfolderBase]: 1396/3019 cut-off events. [2024-06-14 11:45:18,198 INFO L125 PetriNetUnfolderBase]: For 176331/176337 co-relation queries the response was YES. [2024-06-14 11:45:18,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16238 conditions, 3019 events. 1396/3019 cut-off events. For 176331/176337 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 21974 event pairs, 472 based on Foata normal form. 36/3045 useless extension candidates. Maximal degree in co-relation 16118. Up to 1897 conditions per place. [2024-06-14 11:45:18,223 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 163 selfloop transitions, 30 changer transitions 65/264 dead transitions. [2024-06-14 11:45:18,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 264 transitions, 3536 flow [2024-06-14 11:45:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:45:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:45:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 203 transitions. [2024-06-14 11:45:18,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4109311740890688 [2024-06-14 11:45:18,224 INFO L175 Difference]: Start difference. First operand has 346 places, 230 transitions, 2908 flow. Second operand 13 states and 203 transitions. [2024-06-14 11:45:18,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 264 transitions, 3536 flow [2024-06-14 11:45:18,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 264 transitions, 3391 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-14 11:45:18,647 INFO L231 Difference]: Finished difference. Result has 342 places, 182 transitions, 2140 flow [2024-06-14 11:45:18,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2140, PETRI_PLACES=342, PETRI_TRANSITIONS=182} [2024-06-14 11:45:18,648 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 303 predicate places. [2024-06-14 11:45:18,648 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 182 transitions, 2140 flow [2024-06-14 11:45:18,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:18,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:18,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:18,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 11:45:18,648 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)] === [2024-06-14 11:45:18,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2021760869, now seen corresponding path program 2 times [2024-06-14 11:45:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:18,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803774534] [2024-06-14 11:45:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:18,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803774534] [2024-06-14 11:45:18,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803774534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:18,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:18,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:18,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819952576] [2024-06-14 11:45:18,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:18,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:18,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:18,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:18,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-14 11:45:18,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 182 transitions, 2140 flow. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:18,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:18,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-14 11:45:18,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:19,226 INFO L124 PetriNetUnfolderBase]: 1034/2257 cut-off events. [2024-06-14 11:45:19,226 INFO L125 PetriNetUnfolderBase]: For 135218/135222 co-relation queries the response was YES. [2024-06-14 11:45:19,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12916 conditions, 2257 events. 1034/2257 cut-off events. For 135218/135222 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15269 event pairs, 386 based on Foata normal form. 5/2256 useless extension candidates. Maximal degree in co-relation 12796. Up to 1281 conditions per place. [2024-06-14 11:45:19,246 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 175 selfloop transitions, 43 changer transitions 18/242 dead transitions. [2024-06-14 11:45:19,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 242 transitions, 3057 flow [2024-06-14 11:45:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:45:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:45:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-14 11:45:19,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232456140350877 [2024-06-14 11:45:19,247 INFO L175 Difference]: Start difference. First operand has 342 places, 182 transitions, 2140 flow. Second operand 12 states and 193 transitions. [2024-06-14 11:45:19,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 242 transitions, 3057 flow [2024-06-14 11:45:19,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 242 transitions, 2788 flow, removed 26 selfloop flow, removed 28 redundant places. [2024-06-14 11:45:19,550 INFO L231 Difference]: Finished difference. Result has 294 places, 177 transitions, 1959 flow [2024-06-14 11:45:19,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1959, PETRI_PLACES=294, PETRI_TRANSITIONS=177} [2024-06-14 11:45:19,553 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 255 predicate places. [2024-06-14 11:45:19,553 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 177 transitions, 1959 flow [2024-06-14 11:45:19,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:19,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:19,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:19,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 11:45:19,554 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)] === [2024-06-14 11:45:19,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:19,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1073655297, now seen corresponding path program 3 times [2024-06-14 11:45:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458726687] [2024-06-14 11:45:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:19,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:19,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:19,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458726687] [2024-06-14 11:45:19,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458726687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:19,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:19,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:45:19,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940157526] [2024-06-14 11:45:19,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:19,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:45:19,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:19,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:45:19,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:45:19,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:19,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 177 transitions, 1959 flow. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:19,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:19,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:19,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:20,200 INFO L124 PetriNetUnfolderBase]: 982/2147 cut-off events. [2024-06-14 11:45:20,200 INFO L125 PetriNetUnfolderBase]: For 102289/102293 co-relation queries the response was YES. [2024-06-14 11:45:20,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11103 conditions, 2147 events. 982/2147 cut-off events. For 102289/102293 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14393 event pairs, 309 based on Foata normal form. 19/2160 useless extension candidates. Maximal degree in co-relation 10991. Up to 1058 conditions per place. [2024-06-14 11:45:20,218 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 128 selfloop transitions, 58 changer transitions 29/221 dead transitions. [2024-06-14 11:45:20,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 221 transitions, 2539 flow [2024-06-14 11:45:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 11:45:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 11:45:20,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 231 transitions. [2024-06-14 11:45:20,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-06-14 11:45:20,226 INFO L175 Difference]: Start difference. First operand has 294 places, 177 transitions, 1959 flow. Second operand 15 states and 231 transitions. [2024-06-14 11:45:20,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 221 transitions, 2539 flow [2024-06-14 11:45:20,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 221 transitions, 2445 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:45:20,465 INFO L231 Difference]: Finished difference. Result has 291 places, 161 transitions, 1794 flow [2024-06-14 11:45:20,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1794, PETRI_PLACES=291, PETRI_TRANSITIONS=161} [2024-06-14 11:45:20,466 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 252 predicate places. [2024-06-14 11:45:20,466 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 161 transitions, 1794 flow [2024-06-14 11:45:20,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:20,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:20,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:20,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 11:45:20,466 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)] === [2024-06-14 11:45:20,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:20,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1084347057, now seen corresponding path program 4 times [2024-06-14 11:45:20,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:20,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823457675] [2024-06-14 11:45:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:20,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:20,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:20,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823457675] [2024-06-14 11:45:20,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823457675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:20,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:20,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:45:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936625016] [2024-06-14 11:45:20,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:20,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:45:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:45:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:45:20,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:20,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 161 transitions, 1794 flow. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:20,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:20,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:20,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:21,073 INFO L124 PetriNetUnfolderBase]: 834/1828 cut-off events. [2024-06-14 11:45:21,074 INFO L125 PetriNetUnfolderBase]: For 84185/84189 co-relation queries the response was YES. [2024-06-14 11:45:21,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8960 conditions, 1828 events. 834/1828 cut-off events. For 84185/84189 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11711 event pairs, 272 based on Foata normal form. 27/1849 useless extension candidates. Maximal degree in co-relation 8853. Up to 866 conditions per place. [2024-06-14 11:45:21,088 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 118 selfloop transitions, 29 changer transitions 46/199 dead transitions. [2024-06-14 11:45:21,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 199 transitions, 2310 flow [2024-06-14 11:45:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:45:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:45:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 203 transitions. [2024-06-14 11:45:21,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4109311740890688 [2024-06-14 11:45:21,089 INFO L175 Difference]: Start difference. First operand has 291 places, 161 transitions, 1794 flow. Second operand 13 states and 203 transitions. [2024-06-14 11:45:21,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 199 transitions, 2310 flow [2024-06-14 11:45:21,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 199 transitions, 2171 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-14 11:45:21,233 INFO L231 Difference]: Finished difference. Result has 274 places, 131 transitions, 1389 flow [2024-06-14 11:45:21,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1389, PETRI_PLACES=274, PETRI_TRANSITIONS=131} [2024-06-14 11:45:21,234 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 235 predicate places. [2024-06-14 11:45:21,234 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 131 transitions, 1389 flow [2024-06-14 11:45:21,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:21,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:21,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:21,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 11:45:21,234 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)] === [2024-06-14 11:45:21,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1618990847, now seen corresponding path program 5 times [2024-06-14 11:45:21,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:21,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423295259] [2024-06-14 11:45:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:21,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:21,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423295259] [2024-06-14 11:45:21,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423295259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:21,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:21,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855216517] [2024-06-14 11:45:21,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:21,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:21,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:21,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:21,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-14 11:45:21,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 131 transitions, 1389 flow. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:21,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:21,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-14 11:45:21,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:21,692 INFO L124 PetriNetUnfolderBase]: 624/1378 cut-off events. [2024-06-14 11:45:21,692 INFO L125 PetriNetUnfolderBase]: For 49750/49750 co-relation queries the response was YES. [2024-06-14 11:45:21,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6889 conditions, 1378 events. 624/1378 cut-off events. For 49750/49750 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8182 event pairs, 261 based on Foata normal form. 4/1377 useless extension candidates. Maximal degree in co-relation 6786. Up to 1076 conditions per place. [2024-06-14 11:45:21,702 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 103 selfloop transitions, 17 changer transitions 33/159 dead transitions. [2024-06-14 11:45:21,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 159 transitions, 1790 flow [2024-06-14 11:45:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:45:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:45:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 179 transitions. [2024-06-14 11:45:21,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3623481781376518 [2024-06-14 11:45:21,703 INFO L175 Difference]: Start difference. First operand has 274 places, 131 transitions, 1389 flow. Second operand 13 states and 179 transitions. [2024-06-14 11:45:21,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 159 transitions, 1790 flow [2024-06-14 11:45:21,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 159 transitions, 1624 flow, removed 10 selfloop flow, removed 24 redundant places. [2024-06-14 11:45:21,799 INFO L231 Difference]: Finished difference. Result has 235 places, 117 transitions, 1079 flow [2024-06-14 11:45:21,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1079, PETRI_PLACES=235, PETRI_TRANSITIONS=117} [2024-06-14 11:45:21,799 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 196 predicate places. [2024-06-14 11:45:21,799 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 117 transitions, 1079 flow [2024-06-14 11:45:21,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:21,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:21,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:21,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 11:45:21,800 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)] === [2024-06-14 11:45:21,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1656010057, now seen corresponding path program 6 times [2024-06-14 11:45:21,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:21,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137020472] [2024-06-14 11:45:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:21,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:21,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:21,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137020472] [2024-06-14 11:45:21,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137020472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:21,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:21,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:21,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155541428] [2024-06-14 11:45:21,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:21,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:21,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:21,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:21,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:21,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:21,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 117 transitions, 1079 flow. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:21,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:21,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:21,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:22,271 INFO L124 PetriNetUnfolderBase]: 538/1194 cut-off events. [2024-06-14 11:45:22,271 INFO L125 PetriNetUnfolderBase]: For 37315/37315 co-relation queries the response was YES. [2024-06-14 11:45:22,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5604 conditions, 1194 events. 538/1194 cut-off events. For 37315/37315 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6835 event pairs, 209 based on Foata normal form. 4/1192 useless extension candidates. Maximal degree in co-relation 5511. Up to 761 conditions per place. [2024-06-14 11:45:22,278 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 99 selfloop transitions, 14 changer transitions 34/153 dead transitions. [2024-06-14 11:45:22,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 153 transitions, 1559 flow [2024-06-14 11:45:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:45:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:45:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-06-14 11:45:22,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068825910931174 [2024-06-14 11:45:22,279 INFO L175 Difference]: Start difference. First operand has 235 places, 117 transitions, 1079 flow. Second operand 13 states and 201 transitions. [2024-06-14 11:45:22,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 153 transitions, 1559 flow [2024-06-14 11:45:22,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 153 transitions, 1499 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 11:45:22,400 INFO L231 Difference]: Finished difference. Result has 221 places, 104 transitions, 946 flow [2024-06-14 11:45:22,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=946, PETRI_PLACES=221, PETRI_TRANSITIONS=104} [2024-06-14 11:45:22,401 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 182 predicate places. [2024-06-14 11:45:22,401 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 104 transitions, 946 flow [2024-06-14 11:45:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:22,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:22,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:22,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 11:45:22,401 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:45:22,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash -716324255, now seen corresponding path program 7 times [2024-06-14 11:45:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:22,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984971490] [2024-06-14 11:45:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:22,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:22,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984971490] [2024-06-14 11:45:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984971490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075465828] [2024-06-14 11:45:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:22,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:22,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 104 transitions, 946 flow. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:22,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:22,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:22,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:22,813 INFO L124 PetriNetUnfolderBase]: 467/1016 cut-off events. [2024-06-14 11:45:22,813 INFO L125 PetriNetUnfolderBase]: For 33603/33603 co-relation queries the response was YES. [2024-06-14 11:45:22,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4808 conditions, 1016 events. 467/1016 cut-off events. For 33603/33603 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5621 event pairs, 108 based on Foata normal form. 4/1017 useless extension candidates. Maximal degree in co-relation 4723. Up to 476 conditions per place. [2024-06-14 11:45:22,819 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 70 selfloop transitions, 19 changer transitions 31/126 dead transitions. [2024-06-14 11:45:22,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 126 transitions, 1252 flow [2024-06-14 11:45:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:45:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:45:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-14 11:45:22,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2024-06-14 11:45:22,820 INFO L175 Difference]: Start difference. First operand has 221 places, 104 transitions, 946 flow. Second operand 10 states and 153 transitions. [2024-06-14 11:45:22,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 126 transitions, 1252 flow [2024-06-14 11:45:22,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 126 transitions, 1127 flow, removed 6 selfloop flow, removed 23 redundant places. [2024-06-14 11:45:22,883 INFO L231 Difference]: Finished difference. Result has 195 places, 86 transitions, 711 flow [2024-06-14 11:45:22,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=711, PETRI_PLACES=195, PETRI_TRANSITIONS=86} [2024-06-14 11:45:22,885 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 156 predicate places. [2024-06-14 11:45:22,885 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 86 transitions, 711 flow [2024-06-14 11:45:22,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:22,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:22,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:22,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 11:45:22,886 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:45:22,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:22,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2050149447, now seen corresponding path program 8 times [2024-06-14 11:45:22,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:22,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297611134] [2024-06-14 11:45:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:22,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:23,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:23,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297611134] [2024-06-14 11:45:23,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297611134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:23,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:23,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:45:23,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654593381] [2024-06-14 11:45:23,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:23,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:45:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:45:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:45:23,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:23,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 86 transitions, 711 flow. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:23,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:23,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:23,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:23,341 INFO L124 PetriNetUnfolderBase]: 364/800 cut-off events. [2024-06-14 11:45:23,342 INFO L125 PetriNetUnfolderBase]: For 25596/25596 co-relation queries the response was YES. [2024-06-14 11:45:23,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3339 conditions, 800 events. 364/800 cut-off events. For 25596/25596 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4253 event pairs, 105 based on Foata normal form. 16/813 useless extension candidates. Maximal degree in co-relation 3269. Up to 420 conditions per place. [2024-06-14 11:45:23,345 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 52 selfloop transitions, 7 changer transitions 48/113 dead transitions. [2024-06-14 11:45:23,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 113 transitions, 1001 flow [2024-06-14 11:45:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 11:45:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 11:45:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 204 transitions. [2024-06-14 11:45:23,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35789473684210527 [2024-06-14 11:45:23,347 INFO L175 Difference]: Start difference. First operand has 195 places, 86 transitions, 711 flow. Second operand 15 states and 204 transitions. [2024-06-14 11:45:23,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 113 transitions, 1001 flow [2024-06-14 11:45:23,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 113 transitions, 852 flow, removed 14 selfloop flow, removed 30 redundant places. [2024-06-14 11:45:23,379 INFO L231 Difference]: Finished difference. Result has 162 places, 60 transitions, 395 flow [2024-06-14 11:45:23,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=395, PETRI_PLACES=162, PETRI_TRANSITIONS=60} [2024-06-14 11:45:23,380 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 123 predicate places. [2024-06-14 11:45:23,380 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 60 transitions, 395 flow [2024-06-14 11:45:23,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:23,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:23,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:23,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 11:45:23,381 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:45:23,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1286849313, now seen corresponding path program 9 times [2024-06-14 11:45:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:23,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549781030] [2024-06-14 11:45:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:23,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549781030] [2024-06-14 11:45:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549781030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:23,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:23,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:45:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46427284] [2024-06-14 11:45:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:23,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:45:23,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:45:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:45:23,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:23,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 60 transitions, 395 flow. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:23,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:23,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:23,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:23,767 INFO L124 PetriNetUnfolderBase]: 201/453 cut-off events. [2024-06-14 11:45:23,768 INFO L125 PetriNetUnfolderBase]: For 11084/11084 co-relation queries the response was YES. [2024-06-14 11:45:23,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 453 events. 201/453 cut-off events. For 11084/11084 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2021 event pairs, 19 based on Foata normal form. 12/464 useless extension candidates. Maximal degree in co-relation 1576. Up to 106 conditions per place. [2024-06-14 11:45:23,770 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 42 selfloop transitions, 13 changer transitions 34/95 dead transitions. [2024-06-14 11:45:23,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 95 transitions, 721 flow [2024-06-14 11:45:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-14 11:45:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-14 11:45:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 240 transitions. [2024-06-14 11:45:23,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3508771929824561 [2024-06-14 11:45:23,771 INFO L175 Difference]: Start difference. First operand has 162 places, 60 transitions, 395 flow. Second operand 18 states and 240 transitions. [2024-06-14 11:45:23,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 95 transitions, 721 flow [2024-06-14 11:45:23,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 95 transitions, 617 flow, removed 35 selfloop flow, removed 28 redundant places. [2024-06-14 11:45:23,777 INFO L231 Difference]: Finished difference. Result has 115 places, 42 transitions, 244 flow [2024-06-14 11:45:23,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=244, PETRI_PLACES=115, PETRI_TRANSITIONS=42} [2024-06-14 11:45:23,778 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-06-14 11:45:23,778 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 42 transitions, 244 flow [2024-06-14 11:45:23,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:23,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:23,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:23,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 11:45:23,778 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:45:23,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:23,779 INFO L85 PathProgramCache]: Analyzing trace with hash -177662523, now seen corresponding path program 10 times [2024-06-14 11:45:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:23,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360322535] [2024-06-14 11:45:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:23,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360322535] [2024-06-14 11:45:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360322535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:23,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:45:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974428695] [2024-06-14 11:45:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:45:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:23,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:45:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:45:23,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:23,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 42 transitions, 244 flow. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:23,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:23,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:23,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:24,098 INFO L124 PetriNetUnfolderBase]: 101/237 cut-off events. [2024-06-14 11:45:24,098 INFO L125 PetriNetUnfolderBase]: For 1704/1704 co-relation queries the response was YES. [2024-06-14 11:45:24,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 237 events. 101/237 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 759 event pairs, 13 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 758. Up to 54 conditions per place. [2024-06-14 11:45:24,099 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 25 selfloop transitions, 7 changer transitions 27/65 dead transitions. [2024-06-14 11:45:24,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 65 transitions, 410 flow [2024-06-14 11:45:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 11:45:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 11:45:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 183 transitions. [2024-06-14 11:45:24,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34398496240601506 [2024-06-14 11:45:24,100 INFO L175 Difference]: Start difference. First operand has 115 places, 42 transitions, 244 flow. Second operand 14 states and 183 transitions. [2024-06-14 11:45:24,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 65 transitions, 410 flow [2024-06-14 11:45:24,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 65 transitions, 361 flow, removed 8 selfloop flow, removed 20 redundant places. [2024-06-14 11:45:24,102 INFO L231 Difference]: Finished difference. Result has 87 places, 31 transitions, 137 flow [2024-06-14 11:45:24,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=137, PETRI_PLACES=87, PETRI_TRANSITIONS=31} [2024-06-14 11:45:24,103 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2024-06-14 11:45:24,103 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 31 transitions, 137 flow [2024-06-14 11:45:24,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2024-06-14 11:45:24,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:45:24,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:24,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 11:45:24,103 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:45:24,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:45:24,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1172118389, now seen corresponding path program 11 times [2024-06-14 11:45:24,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:45:24,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286422785] [2024-06-14 11:45:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:45:24,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:45:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:45:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:45:24,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:45:24,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286422785] [2024-06-14 11:45:24,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286422785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:45:24,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:45:24,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:45:24,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667388961] [2024-06-14 11:45:24,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:45:24,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:45:24,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:45:24,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:45:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:45:24,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-14 11:45:24,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 31 transitions, 137 flow. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:24,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:45:24,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-14 11:45:24,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:45:24,371 INFO L124 PetriNetUnfolderBase]: 40/108 cut-off events. [2024-06-14 11:45:24,372 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-06-14 11:45:24,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 108 events. 40/108 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 180 event pairs, 5 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 274. Up to 25 conditions per place. [2024-06-14 11:45:24,372 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2024-06-14 11:45:24,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 42 transitions, 205 flow [2024-06-14 11:45:24,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:45:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:45:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:45:24,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33421052631578946 [2024-06-14 11:45:24,373 INFO L175 Difference]: Start difference. First operand has 87 places, 31 transitions, 137 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:45:24,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 42 transitions, 205 flow [2024-06-14 11:45:24,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 167 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-14 11:45:24,374 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2024-06-14 11:45:24,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2024-06-14 11:45:24,374 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2024-06-14 11:45:24,374 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2024-06-14 11:45:24,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:45:24,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 11:45:24,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 11:45:24,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 11:45:24,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 11:45:24,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 11:45:24,378 INFO L445 BasicCegarLoop]: Path program histogram: [13, 11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:45:24,381 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:45:24,381 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:45:24,384 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 11:45:24,384 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 11:45:24,385 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:45:24 BasicIcfg [2024-06-14 11:45:24,385 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:45:24,385 INFO L158 Benchmark]: Toolchain (without parser) took 49142.40ms. Allocated memory was 159.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 88.6MB in the beginning and 605.2MB in the end (delta: -516.6MB). Peak memory consumption was 571.1MB. Max. memory is 16.1GB. [2024-06-14 11:45:24,385 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 124.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:45:24,385 INFO L158 Benchmark]: Witness Parser took 4.22ms. Allocated memory is still 159.4MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:45:24,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.21ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 73.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-14 11:45:24,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.16ms. Allocated memory is still 159.4MB. Free memory was 73.9MB in the beginning and 72.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:45:24,387 INFO L158 Benchmark]: Boogie Preprocessor took 25.35ms. Allocated memory is still 159.4MB. Free memory was 72.1MB in the beginning and 70.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:45:24,387 INFO L158 Benchmark]: RCFGBuilder took 459.69ms. Allocated memory is still 159.4MB. Free memory was 70.0MB in the beginning and 110.5MB in the end (delta: -40.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-14 11:45:24,387 INFO L158 Benchmark]: TraceAbstraction took 48340.71ms. Allocated memory was 159.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 110.0MB in the beginning and 605.2MB in the end (delta: -495.2MB). Peak memory consumption was 594.2MB. Max. memory is 16.1GB. [2024-06-14 11:45:24,388 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 124.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 4.22ms. Allocated memory is still 159.4MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.21ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 73.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.16ms. Allocated memory is still 159.4MB. Free memory was 73.9MB in the beginning and 72.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.35ms. Allocated memory is still 159.4MB. Free memory was 72.1MB in the beginning and 70.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.69ms. Allocated memory is still 159.4MB. Free memory was 70.0MB in the beginning and 110.5MB in the end (delta: -40.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 48340.71ms. Allocated memory was 159.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 110.0MB in the beginning and 605.2MB in the end (delta: -495.2MB). Peak memory consumption was 594.2MB. 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, 65 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: 48.2s, OverallIterations: 75, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 36.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6267 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5562 mSDsluCounter, 1592 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1104 mSDsCounter, 1005 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21709 IncrementalHoareTripleChecker+Invalid, 22714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1005 mSolverCounterUnsat, 488 mSDtfsCounter, 21709 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 965 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 953 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2928occurred in iteration=63, InterpolantAutomatonStates: 858, 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, 10.6s InterpolantComputationTime, 1783 NumberOfCodeBlocks, 1783 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 1708 ConstructedInterpolants, 0 QuantifiedInterpolants, 20319 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 75 InterpolantComputations, 75 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! [2024-06-14 11:45:24,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE