./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stack_longer-2.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack_longer-2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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/pthread/stack_longer-2.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack_longer-2.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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-3d25acf-m [2024-01-30 14:15:14,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:15:14,951 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:15:14,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:15:14,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:15:14,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:15:14,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:15:14,977 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:15:14,977 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:15:14,980 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:15:14,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:15:14,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:15:14,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:15:14,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:15:14,983 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:15:14,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:15:14,983 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:15:14,983 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:15:14,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:15:14,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:15:14,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:15:14,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:15:14,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:15:14,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:15:14,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:15:14,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:15:14,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:15:14,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:15:14,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:15:14,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:15:14,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:15:14,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:15:14,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:15:14,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:15:14,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:15:14,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:15:14,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:15:14,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:15:14,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:15:14,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:15:14,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:15:14,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:15:14,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:15:14,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:15:15,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:15:15,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:15:15,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:15:15,260 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:15:15,260 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:15:15,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2024-01-30 14:15:16,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:15:16,532 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:15:16,536 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2024-01-30 14:15:16,551 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/215d00c05/8ef2eaded1954bdb91705a36be952490/FLAG664ffaf27 [2024-01-30 14:15:16,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/215d00c05/8ef2eaded1954bdb91705a36be952490 [2024-01-30 14:15:16,571 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:15:16,572 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:15:16,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack_longer-2.yml/witness.yml [2024-01-30 14:15:16,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:15:16,662 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:15:16,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:15:16,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:15:16,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:15:16,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:15:16" (1/2) ... [2024-01-30 14:15:16,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706d849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:15:16, skipping insertion in model container [2024-01-30 14:15:16,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:15:16" (1/2) ... [2024-01-30 14:15:16,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@36cdf362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:15:16, skipping insertion in model container [2024-01-30 14:15:16,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:16" (2/2) ... [2024-01-30 14:15:16,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706d849 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:16, skipping insertion in model container [2024-01-30 14:15:16,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:16" (2/2) ... [2024-01-30 14:15:16,671 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:15:16,715 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:15:16,717 INFO L98 nessWitnessExtractor]: Location invariant before [L996-L997] ((unsigned long )arg == 0UL) && (((((((((((i == 4 || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || (5 <= i && i <= 399)) || (5 <= i && i <= 399)) || i == 4) [2024-01-30 14:15:16,717 INFO L98 nessWitnessExtractor]: Location invariant after [L996-L997] ((unsigned long )arg == 0UL) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399)) || i == 4) [2024-01-30 14:15:16,717 INFO L98 nessWitnessExtractor]: Loop invariant at [L991-L999] (unsigned long )arg == 0UL [2024-01-30 14:15:16,717 INFO L98 nessWitnessExtractor]: Location invariant before [L998-L998] ((unsigned long )arg == 0UL) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399)) || i == 4) [2024-01-30 14:15:16,717 INFO L98 nessWitnessExtractor]: Location invariant before [L1007-L1007] ((unsigned long )arg == 0UL) && ((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 6) [2024-01-30 14:15:16,717 INFO L98 nessWitnessExtractor]: Location invariant before [L993-L993] ((unsigned long )arg == 0UL) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399)) [2024-01-30 14:15:16,717 INFO L98 nessWitnessExtractor]: Location invariant before [L1000-L1000] (i == 400) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:16,718 INFO L98 nessWitnessExtractor]: Location invariant before [L1013-L1013] ((unsigned long )arg == 0UL) && ((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 6) [2024-01-30 14:15:16,718 INFO L98 nessWitnessExtractor]: Location invariant before [L995-L995] ((unsigned long )arg == 0UL) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399)) [2024-01-30 14:15:16,718 INFO L98 nessWitnessExtractor]: Location invariant before [L1015-L1015] (i == 400) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:16,718 INFO L98 nessWitnessExtractor]: Loop invariant at [L1005-L1014] (unsigned long )arg == 0UL [2024-01-30 14:15:16,718 INFO L98 nessWitnessExtractor]: Location invariant before [L1020-L1020] flag == (_Bool)0 [2024-01-30 14:15:16,718 INFO L98 nessWitnessExtractor]: Location invariant before [L1008-L1012] ((unsigned long )arg == 0UL) && ((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 6) [2024-01-30 14:15:16,718 INFO L98 nessWitnessExtractor]: Location invariant before [L1010-L1011] ((unsigned long )arg == 0UL) && ((((((((((((((((i == 5 || i == 4) || i == 4) || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 7) || i == 6) || i == 6) [2024-01-30 14:15:16,718 INFO L98 nessWitnessExtractor]: Location invariant after [L1010-L1011] ((unsigned long )arg == 0UL) && ((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (8 <= i && i <= 399)) || (0 == i && i == 0)) || i == 7) || i == 6) [2024-01-30 14:15:16,719 INFO L98 nessWitnessExtractor]: Location invariant before [L994-L994] ((unsigned long )arg == 0UL) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 399)) [2024-01-30 14:15:16,719 INFO L98 nessWitnessExtractor]: Location invariant before [L1021-L1021] flag == (_Bool)0 [2024-01-30 14:15:16,761 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:15:17,118 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2024-01-30 14:15:17,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:15:17,160 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:15:17,199 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:15:17,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:15:17,313 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:15:17,313 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17 WrapperNode [2024-01-30 14:15:17,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:15:17,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:15:17,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:15:17,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:15:17,320 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 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,345 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 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,381 INFO L138 Inliner]: procedures = 278, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 175 [2024-01-30 14:15:17,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:15:17,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:15:17,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:15:17,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:15:17,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,414 INFO L175 MemorySlicer]: Split 14 memory accesses to 5 slices as follows [2, 5, 2, 3, 2]. 36 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 4 writes are split as follows [0, 0, 1, 2, 1]. [2024-01-30 14:15:17,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:15:17,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:15:17,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:15:17,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:15:17,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (1/1) ... [2024-01-30 14:15:17,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:15:17,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:17,495 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) [2024-01-30 14:15:17,521 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 [2024-01-30 14:15:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-01-30 14:15:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-01-30 14:15:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-01-30 14:15:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-01-30 14:15:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:15:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:15:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:15:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:15:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:15:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:15:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:15:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:15:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:15:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:15:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:15:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:15:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:15:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:15:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:15:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:15:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:15:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:15:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:15:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:15:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:15:17,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:15:17,553 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:15:17,656 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:15:17,657 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:15:17,921 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:15:17,921 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:15:18,081 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:15:18,081 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-30 14:15:18,082 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:15:18 BoogieIcfgContainer [2024-01-30 14:15:18,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:15:18,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:15:18,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:15:18,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:15:18,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:15:16" (1/4) ... [2024-01-30 14:15:18,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb26c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:15:18, skipping insertion in model container [2024-01-30 14:15:18,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:16" (2/4) ... [2024-01-30 14:15:18,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb26c99 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:15:18, skipping insertion in model container [2024-01-30 14:15:18,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:17" (3/4) ... [2024-01-30 14:15:18,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb26c99 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:15:18, skipping insertion in model container [2024-01-30 14:15:18,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:15:18" (4/4) ... [2024-01-30 14:15:18,088 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-01-30 14:15:18,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:15:18,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-01-30 14:15:18,103 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:15:18,162 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-30 14:15:18,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 160 flow [2024-01-30 14:15:18,225 INFO L124 PetriNetUnfolderBase]: 5/71 cut-off events. [2024-01-30 14:15:18,225 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-30 14:15:18,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 5/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 215 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-01-30 14:15:18,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 73 transitions, 160 flow [2024-01-30 14:15:18,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 69 transitions, 147 flow [2024-01-30 14:15:18,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:15:18,252 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;@1e9b62c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:15:18,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-01-30 14:15:18,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:15:18,254 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:15:18,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:18,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:18,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:15:18,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:18,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:18,259 INFO L85 PathProgramCache]: Analyzing trace with hash 14462, now seen corresponding path program 1 times [2024-01-30 14:15:18,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:18,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26369724] [2024-01-30 14:15:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:18,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26369724] [2024-01-30 14:15:18,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26369724] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:18,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:18,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:15:18,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890914480] [2024-01-30 14:15:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:18,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:15:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:18,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:15:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:15:18,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-01-30 14:15:18,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:18,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:18,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-01-30 14:15:18,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:18,784 INFO L124 PetriNetUnfolderBase]: 473/1246 cut-off events. [2024-01-30 14:15:18,784 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-30 14:15:18,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 1246 events. 473/1246 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8355 event pairs, 357 based on Foata normal form. 48/991 useless extension candidates. Maximal degree in co-relation 1903. Up to 749 conditions per place. [2024-01-30 14:15:18,797 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 28 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-01-30 14:15:18,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 65 transitions, 197 flow [2024-01-30 14:15:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:15:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:15:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-01-30 14:15:18,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6712328767123288 [2024-01-30 14:15:18,812 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 147 flow. Second operand 3 states and 147 transitions. [2024-01-30 14:15:18,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 65 transitions, 197 flow [2024-01-30 14:15:18,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 192 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:15:18,821 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 136 flow [2024-01-30 14:15:18,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-01-30 14:15:18,826 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2024-01-30 14:15:18,826 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 136 flow [2024-01-30 14:15:18,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:18,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:18,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:15:18,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:15:18,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:18,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash 484833197, now seen corresponding path program 1 times [2024-01-30 14:15:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:18,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499985940] [2024-01-30 14:15:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:18,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:18,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499985940] [2024-01-30 14:15:18,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499985940] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:18,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:18,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:18,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950193854] [2024-01-30 14:15:18,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:18,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:15:18,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-01-30 14:15:19,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:19,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:19,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-01-30 14:15:19,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:19,172 INFO L124 PetriNetUnfolderBase]: 423/1045 cut-off events. [2024-01-30 14:15:19,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:19,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 1045 events. 423/1045 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6797 event pairs, 9 based on Foata normal form. 44/951 useless extension candidates. Maximal degree in co-relation 1754. Up to 649 conditions per place. [2024-01-30 14:15:19,178 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 39 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-01-30 14:15:19,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 240 flow [2024-01-30 14:15:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-01-30 14:15:19,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678082191780822 [2024-01-30 14:15:19,184 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 136 flow. Second operand 4 states and 195 transitions. [2024-01-30 14:15:19,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 240 flow [2024-01-30 14:15:19,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:15:19,186 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 135 flow [2024-01-30 14:15:19,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-01-30 14:15:19,187 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2024-01-30 14:15:19,187 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 135 flow [2024-01-30 14:15:19,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:19,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:19,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:19,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:15:19,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:19,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:19,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2068250192, now seen corresponding path program 1 times [2024-01-30 14:15:19,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:19,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577573880] [2024-01-30 14:15:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:19,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:19,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577573880] [2024-01-30 14:15:19,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577573880] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:19,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:19,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:19,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078292307] [2024-01-30 14:15:19,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:19,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:19,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:19,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:15:19,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73 [2024-01-30 14:15:19,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:19,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:19,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73 [2024-01-30 14:15:19,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:19,556 INFO L124 PetriNetUnfolderBase]: 1170/2352 cut-off events. [2024-01-30 14:15:19,557 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-01-30 14:15:19,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4354 conditions, 2352 events. 1170/2352 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14724 event pairs, 695 based on Foata normal form. 22/1966 useless extension candidates. Maximal degree in co-relation 4348. Up to 1224 conditions per place. [2024-01-30 14:15:19,567 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 72 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-01-30 14:15:19,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 98 transitions, 359 flow [2024-01-30 14:15:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2024-01-30 14:15:19,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506849315068494 [2024-01-30 14:15:19,570 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 135 flow. Second operand 4 states and 190 transitions. [2024-01-30 14:15:19,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 98 transitions, 359 flow [2024-01-30 14:15:19,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 98 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:15:19,572 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 158 flow [2024-01-30 14:15:19,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-01-30 14:15:19,573 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2024-01-30 14:15:19,574 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 158 flow [2024-01-30 14:15:19,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:19,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:19,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:19,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:15:19,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:19,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2068276009, now seen corresponding path program 1 times [2024-01-30 14:15:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:19,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860659019] [2024-01-30 14:15:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:19,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:19,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860659019] [2024-01-30 14:15:19,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860659019] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:19,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:19,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:19,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432000066] [2024-01-30 14:15:19,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:19,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:19,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:15:19,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-01-30 14:15:19,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:19,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:19,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-01-30 14:15:19,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:19,900 INFO L124 PetriNetUnfolderBase]: 705/1650 cut-off events. [2024-01-30 14:15:19,900 INFO L125 PetriNetUnfolderBase]: For 49/69 co-relation queries the response was YES. [2024-01-30 14:15:19,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 1650 events. 705/1650 cut-off events. For 49/69 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10726 event pairs, 306 based on Foata normal form. 100/1600 useless extension candidates. Maximal degree in co-relation 3078. Up to 999 conditions per place. [2024-01-30 14:15:19,908 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 55 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-01-30 14:15:19,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 343 flow [2024-01-30 14:15:19,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2024-01-30 14:15:19,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7123287671232876 [2024-01-30 14:15:19,910 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 158 flow. Second operand 4 states and 208 transitions. [2024-01-30 14:15:19,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 343 flow [2024-01-30 14:15:19,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:15:19,912 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 154 flow [2024-01-30 14:15:19,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2024-01-30 14:15:19,912 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2024-01-30 14:15:19,913 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 154 flow [2024-01-30 14:15:19,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:19,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:19,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:19,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:15:19,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:19,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash -956596628, now seen corresponding path program 1 times [2024-01-30 14:15:19,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:19,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567766945] [2024-01-30 14:15:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:19,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:19,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567766945] [2024-01-30 14:15:19,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567766945] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:19,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:19,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:19,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882779464] [2024-01-30 14:15:19,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:19,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:19,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:19,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:19,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:15:19,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73 [2024-01-30 14:15:19,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:19,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:19,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73 [2024-01-30 14:15:19,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:20,325 INFO L124 PetriNetUnfolderBase]: 1821/3712 cut-off events. [2024-01-30 14:15:20,325 INFO L125 PetriNetUnfolderBase]: For 186/270 co-relation queries the response was YES. [2024-01-30 14:15:20,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7200 conditions, 3712 events. 1821/3712 cut-off events. For 186/270 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 24125 event pairs, 1208 based on Foata normal form. 96/3346 useless extension candidates. Maximal degree in co-relation 7193. Up to 1908 conditions per place. [2024-01-30 14:15:20,340 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 78 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2024-01-30 14:15:20,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 412 flow [2024-01-30 14:15:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-01-30 14:15:20,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6575342465753424 [2024-01-30 14:15:20,342 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 154 flow. Second operand 4 states and 192 transitions. [2024-01-30 14:15:20,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 412 flow [2024-01-30 14:15:20,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:15:20,344 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 175 flow [2024-01-30 14:15:20,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-01-30 14:15:20,345 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 0 predicate places. [2024-01-30 14:15:20,345 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 175 flow [2024-01-30 14:15:20,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:20,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:20,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:20,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:15:20,346 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:20,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:20,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1186726412, now seen corresponding path program 1 times [2024-01-30 14:15:20,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:20,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949699762] [2024-01-30 14:15:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:20,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:20,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:20,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949699762] [2024-01-30 14:15:20,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949699762] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:20,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:20,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328719048] [2024-01-30 14:15:20,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:20,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:20,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:15:20,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 73 [2024-01-30 14:15:20,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:20,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:20,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 73 [2024-01-30 14:15:20,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:20,620 INFO L124 PetriNetUnfolderBase]: 925/2266 cut-off events. [2024-01-30 14:15:20,620 INFO L125 PetriNetUnfolderBase]: For 170/242 co-relation queries the response was YES. [2024-01-30 14:15:20,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4452 conditions, 2266 events. 925/2266 cut-off events. For 170/242 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 15741 event pairs, 116 based on Foata normal form. 62/2216 useless extension candidates. Maximal degree in co-relation 4444. Up to 1225 conditions per place. [2024-01-30 14:15:20,630 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 58 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-01-30 14:15:20,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 92 transitions, 379 flow [2024-01-30 14:15:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-01-30 14:15:20,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7363013698630136 [2024-01-30 14:15:20,631 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 175 flow. Second operand 4 states and 215 transitions. [2024-01-30 14:15:20,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 92 transitions, 379 flow [2024-01-30 14:15:20,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 369 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:15:20,636 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 193 flow [2024-01-30 14:15:20,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-01-30 14:15:20,639 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2024-01-30 14:15:20,639 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 193 flow [2024-01-30 14:15:20,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:20,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:20,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:20,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:15:20,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:20,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1086133993, now seen corresponding path program 1 times [2024-01-30 14:15:20,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:20,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641029991] [2024-01-30 14:15:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:20,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:20,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:20,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641029991] [2024-01-30 14:15:20,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641029991] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:15:20,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775536650] [2024-01-30 14:15:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:20,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:20,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:20,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-30 14:15:20,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-30 14:15:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:20,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-30 14:15:20,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:15:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:20,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:15:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775536650] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:15:21,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:15:21,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-01-30 14:15:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533120558] [2024-01-30 14:15:21,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:15:21,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:15:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:21,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:15:21,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:15:21,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2024-01-30 14:15:21,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 193 flow. Second operand has 10 states, 10 states have (on average 29.4) internal successors, (294), 10 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:21,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:21,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2024-01-30 14:15:21,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:22,298 INFO L124 PetriNetUnfolderBase]: 2721/5170 cut-off events. [2024-01-30 14:15:22,298 INFO L125 PetriNetUnfolderBase]: For 1187/1351 co-relation queries the response was YES. [2024-01-30 14:15:22,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11169 conditions, 5170 events. 2721/5170 cut-off events. For 1187/1351 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 31196 event pairs, 51 based on Foata normal form. 698/5646 useless extension candidates. Maximal degree in co-relation 11158. Up to 1027 conditions per place. [2024-01-30 14:15:22,325 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 171 selfloop transitions, 7 changer transitions 0/198 dead transitions. [2024-01-30 14:15:22,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 198 transitions, 935 flow [2024-01-30 14:15:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:15:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:15:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 383 transitions. [2024-01-30 14:15:22,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6558219178082192 [2024-01-30 14:15:22,327 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 193 flow. Second operand 8 states and 383 transitions. [2024-01-30 14:15:22,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 198 transitions, 935 flow [2024-01-30 14:15:22,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 198 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:15:22,332 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 212 flow [2024-01-30 14:15:22,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=212, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-01-30 14:15:22,333 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 8 predicate places. [2024-01-30 14:15:22,333 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 212 flow [2024-01-30 14:15:22,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.4) internal successors, (294), 10 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:22,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:22,334 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:22,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-30 14:15:22,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:22,540 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:22,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash -258450797, now seen corresponding path program 1 times [2024-01-30 14:15:22,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:22,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763732291] [2024-01-30 14:15:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:22,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:22,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:22,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763732291] [2024-01-30 14:15:22,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763732291] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:15:22,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730439177] [2024-01-30 14:15:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:22,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:22,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:22,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-30 14:15:22,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-30 14:15:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:22,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-30 14:15:22,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:15:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:22,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:15:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:23,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730439177] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:15:23,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:15:23,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-01-30 14:15:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550011460] [2024-01-30 14:15:23,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:15:23,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:15:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:15:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:15:23,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2024-01-30 14:15:23,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:23,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:23,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2024-01-30 14:15:23,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:24,252 INFO L124 PetriNetUnfolderBase]: 4891/8705 cut-off events. [2024-01-30 14:15:24,252 INFO L125 PetriNetUnfolderBase]: For 5223/5334 co-relation queries the response was YES. [2024-01-30 14:15:24,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19856 conditions, 8705 events. 4891/8705 cut-off events. For 5223/5334 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 56459 event pairs, 135 based on Foata normal form. 1329/9315 useless extension candidates. Maximal degree in co-relation 19841. Up to 2016 conditions per place. [2024-01-30 14:15:24,287 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 154 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-01-30 14:15:24,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 177 transitions, 982 flow [2024-01-30 14:15:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:15:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:15:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 369 transitions. [2024-01-30 14:15:24,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6318493150684932 [2024-01-30 14:15:24,289 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 212 flow. Second operand 8 states and 369 transitions. [2024-01-30 14:15:24,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 177 transitions, 982 flow [2024-01-30 14:15:24,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 177 transitions, 917 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-01-30 14:15:24,295 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 218 flow [2024-01-30 14:15:24,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2024-01-30 14:15:24,296 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2024-01-30 14:15:24,296 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 218 flow [2024-01-30 14:15:24,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:24,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:24,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:24,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-30 14:15:24,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-01-30 14:15:24,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:24,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1679666367, now seen corresponding path program 1 times [2024-01-30 14:15:24,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:24,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952829913] [2024-01-30 14:15:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:24,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:24,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952829913] [2024-01-30 14:15:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952829913] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:24,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135105544] [2024-01-30 14:15:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:24,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:15:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:15:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:15:24,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 73 [2024-01-30 14:15:24,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:24,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:24,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 73 [2024-01-30 14:15:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:25,029 INFO L124 PetriNetUnfolderBase]: 1613/4263 cut-off events. [2024-01-30 14:15:25,029 INFO L125 PetriNetUnfolderBase]: For 4050/4148 co-relation queries the response was YES. [2024-01-30 14:15:25,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9602 conditions, 4263 events. 1613/4263 cut-off events. For 4050/4148 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 26961 event pairs, 429 based on Foata normal form. 398/4475 useless extension candidates. Maximal degree in co-relation 9583. Up to 2028 conditions per place. [2024-01-30 14:15:25,048 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 52 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-01-30 14:15:25,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 430 flow [2024-01-30 14:15:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:15:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:15:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-01-30 14:15:25,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7488584474885844 [2024-01-30 14:15:25,050 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 218 flow. Second operand 3 states and 164 transitions. [2024-01-30 14:15:25,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 430 flow [2024-01-30 14:15:25,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 410 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-30 14:15:25,057 INFO L231 Difference]: Finished difference. Result has 80 places, 60 transitions, 215 flow [2024-01-30 14:15:25,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=80, PETRI_TRANSITIONS=60} [2024-01-30 14:15:25,059 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2024-01-30 14:15:25,059 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 60 transitions, 215 flow [2024-01-30 14:15:25,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:25,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:25,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:15:25,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:25,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2141592471, now seen corresponding path program 1 times [2024-01-30 14:15:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:25,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223736948] [2024-01-30 14:15:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:25,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223736948] [2024-01-30 14:15:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223736948] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:15:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836868008] [2024-01-30 14:15:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:25,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:25,231 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-30 14:15:25,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-30 14:15:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:25,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-30 14:15:25,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:15:25,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-30 14:15:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:25,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:15:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:25,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836868008] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:15:25,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:15:25,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-01-30 14:15:25,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010217714] [2024-01-30 14:15:25,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:15:25,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:15:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:15:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:15:25,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-01-30 14:15:25,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 60 transitions, 215 flow. Second operand has 10 states, 10 states have (on average 42.5) internal successors, (425), 10 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:25,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:25,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-01-30 14:15:25,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:26,976 INFO L124 PetriNetUnfolderBase]: 4997/12840 cut-off events. [2024-01-30 14:15:26,976 INFO L125 PetriNetUnfolderBase]: For 12180/12288 co-relation queries the response was YES. [2024-01-30 14:15:27,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30654 conditions, 12840 events. 4997/12840 cut-off events. For 12180/12288 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 108923 event pairs, 995 based on Foata normal form. 222/12757 useless extension candidates. Maximal degree in co-relation 30635. Up to 1911 conditions per place. [2024-01-30 14:15:27,059 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 203 selfloop transitions, 19 changer transitions 0/243 dead transitions. [2024-01-30 14:15:27,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 243 transitions, 1458 flow [2024-01-30 14:15:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:15:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:15:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 636 transitions. [2024-01-30 14:15:27,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.726027397260274 [2024-01-30 14:15:27,062 INFO L175 Difference]: Start difference. First operand has 80 places, 60 transitions, 215 flow. Second operand 12 states and 636 transitions. [2024-01-30 14:15:27,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 243 transitions, 1458 flow [2024-01-30 14:15:27,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 243 transitions, 1436 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:15:27,090 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 345 flow [2024-01-30 14:15:27,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=345, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2024-01-30 14:15:27,091 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 25 predicate places. [2024-01-30 14:15:27,091 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 345 flow [2024-01-30 14:15:27,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 42.5) internal successors, (425), 10 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:27,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:27,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:27,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-30 14:15:27,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:27,304 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:27,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1793372820, now seen corresponding path program 1 times [2024-01-30 14:15:27,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:27,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479109976] [2024-01-30 14:15:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:27,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:27,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:27,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479109976] [2024-01-30 14:15:27,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479109976] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:27,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:27,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:15:27,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128649619] [2024-01-30 14:15:27,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:15:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:15:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:15:27,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-01-30 14:15:27,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 7 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:27,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:27,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-01-30 14:15:27,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:29,480 INFO L124 PetriNetUnfolderBase]: 5195/13232 cut-off events. [2024-01-30 14:15:29,480 INFO L125 PetriNetUnfolderBase]: For 16113/16221 co-relation queries the response was YES. [2024-01-30 14:15:29,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33274 conditions, 13232 events. 5195/13232 cut-off events. For 16113/16221 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 113184 event pairs, 1223 based on Foata normal form. 124/13102 useless extension candidates. Maximal degree in co-relation 33247. Up to 6143 conditions per place. [2024-01-30 14:15:29,549 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 112 selfloop transitions, 13 changer transitions 0/146 dead transitions. [2024-01-30 14:15:29,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 146 transitions, 896 flow [2024-01-30 14:15:29,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:15:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:15:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 356 transitions. [2024-01-30 14:15:29,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6966731898238747 [2024-01-30 14:15:29,551 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 345 flow. Second operand 7 states and 356 transitions. [2024-01-30 14:15:29,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 146 transitions, 896 flow [2024-01-30 14:15:29,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 146 transitions, 882 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-30 14:15:29,586 INFO L231 Difference]: Finished difference. Result has 106 places, 84 transitions, 423 flow [2024-01-30 14:15:29,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=106, PETRI_TRANSITIONS=84} [2024-01-30 14:15:29,587 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 35 predicate places. [2024-01-30 14:15:29,587 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 84 transitions, 423 flow [2024-01-30 14:15:29,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 7 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:29,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:29,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:29,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-30 14:15:29,588 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:29,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1867300367, now seen corresponding path program 1 times [2024-01-30 14:15:29,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:29,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704770258] [2024-01-30 14:15:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:29,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-30 14:15:30,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:30,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704770258] [2024-01-30 14:15:30,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704770258] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:30,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:30,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:15:30,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312049677] [2024-01-30 14:15:30,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:30,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:15:30,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:30,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:15:30,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:15:30,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-01-30 14:15:30,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 84 transitions, 423 flow. Second operand has 7 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:30,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:30,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-01-30 14:15:30,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:31,934 INFO L124 PetriNetUnfolderBase]: 6051/15138 cut-off events. [2024-01-30 14:15:31,934 INFO L125 PetriNetUnfolderBase]: For 21837/21945 co-relation queries the response was YES. [2024-01-30 14:15:31,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40138 conditions, 15138 events. 6051/15138 cut-off events. For 21837/21945 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 131816 event pairs, 1129 based on Foata normal form. 108/14979 useless extension candidates. Maximal degree in co-relation 40105. Up to 5526 conditions per place. [2024-01-30 14:15:32,016 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 119 selfloop transitions, 20 changer transitions 0/160 dead transitions. [2024-01-30 14:15:32,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 160 transitions, 1087 flow [2024-01-30 14:15:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:15:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:15:32,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 389 transitions. [2024-01-30 14:15:32,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.666095890410959 [2024-01-30 14:15:32,018 INFO L175 Difference]: Start difference. First operand has 106 places, 84 transitions, 423 flow. Second operand 8 states and 389 transitions. [2024-01-30 14:15:32,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 160 transitions, 1087 flow [2024-01-30 14:15:32,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 160 transitions, 1087 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-30 14:15:32,071 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 581 flow [2024-01-30 14:15:32,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=581, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2024-01-30 14:15:32,072 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 47 predicate places. [2024-01-30 14:15:32,073 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 581 flow [2024-01-30 14:15:32,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:32,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:32,073 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:32,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-30 14:15:32,073 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err8ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:32,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:32,074 INFO L85 PathProgramCache]: Analyzing trace with hash 479940281, now seen corresponding path program 1 times [2024-01-30 14:15:32,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:32,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805627319] [2024-01-30 14:15:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-01-30 14:15:32,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:32,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805627319] [2024-01-30 14:15:32,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805627319] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:32,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:32,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:15:32,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394027311] [2024-01-30 14:15:32,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:32,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:15:32,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:32,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:15:32,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:15:32,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-01-30 14:15:32,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 581 flow. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:32,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:32,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-01-30 14:15:32,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:35,029 INFO L124 PetriNetUnfolderBase]: 11482/23109 cut-off events. [2024-01-30 14:15:35,029 INFO L125 PetriNetUnfolderBase]: For 36199/36339 co-relation queries the response was YES. [2024-01-30 14:15:35,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67425 conditions, 23109 events. 11482/23109 cut-off events. For 36199/36339 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 186438 event pairs, 2635 based on Foata normal form. 104/23056 useless extension candidates. Maximal degree in co-relation 67385. Up to 11278 conditions per place. [2024-01-30 14:15:35,164 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 193 selfloop transitions, 9 changer transitions 3/227 dead transitions. [2024-01-30 14:15:35,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 227 transitions, 1899 flow [2024-01-30 14:15:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:15:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:15:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 274 transitions. [2024-01-30 14:15:35,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6255707762557078 [2024-01-30 14:15:35,165 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 581 flow. Second operand 6 states and 274 transitions. [2024-01-30 14:15:35,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 227 transitions, 1899 flow [2024-01-30 14:15:35,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 227 transitions, 1853 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-01-30 14:15:35,302 INFO L231 Difference]: Finished difference. Result has 122 places, 95 transitions, 583 flow [2024-01-30 14:15:35,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=122, PETRI_TRANSITIONS=95} [2024-01-30 14:15:35,303 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 51 predicate places. [2024-01-30 14:15:35,303 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 95 transitions, 583 flow [2024-01-30 14:15:35,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:35,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:35,304 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:35,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-30 14:15:35,304 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:35,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1419790694, now seen corresponding path program 1 times [2024-01-30 14:15:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:35,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212029515] [2024-01-30 14:15:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:35,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-30 14:15:35,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:35,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212029515] [2024-01-30 14:15:35,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212029515] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:15:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219510583] [2024-01-30 14:15:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:35,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:35,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:35,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-30 14:15:35,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-30 14:15:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:35,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-30 14:15:35,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:15:35,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-30 14:15:35,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-30 14:15:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:35,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:15:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-30 14:15:35,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219510583] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:15:35,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:15:35,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 13 [2024-01-30 14:15:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005128299] [2024-01-30 14:15:35,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:15:35,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-30 14:15:35,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-30 14:15:35,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-01-30 14:15:35,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-01-30 14:15:35,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 95 transitions, 583 flow. Second operand has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:35,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:35,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-01-30 14:15:35,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:40,485 INFO L124 PetriNetUnfolderBase]: 11105/27426 cut-off events. [2024-01-30 14:15:40,485 INFO L125 PetriNetUnfolderBase]: For 64168/64208 co-relation queries the response was YES. [2024-01-30 14:15:40,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82254 conditions, 27426 events. 11105/27426 cut-off events. For 64168/64208 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 264230 event pairs, 1769 based on Foata normal form. 444/27649 useless extension candidates. Maximal degree in co-relation 82213. Up to 3994 conditions per place. [2024-01-30 14:15:40,671 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 428 selfloop transitions, 77 changer transitions 4/530 dead transitions. [2024-01-30 14:15:40,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 530 transitions, 4205 flow [2024-01-30 14:15:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-01-30 14:15:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-01-30 14:15:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1405 transitions. [2024-01-30 14:15:40,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7128361237950279 [2024-01-30 14:15:40,680 INFO L175 Difference]: Start difference. First operand has 122 places, 95 transitions, 583 flow. Second operand 27 states and 1405 transitions. [2024-01-30 14:15:40,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 530 transitions, 4205 flow [2024-01-30 14:15:40,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 530 transitions, 4027 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-01-30 14:15:40,887 INFO L231 Difference]: Finished difference. Result has 156 places, 153 transitions, 1359 flow [2024-01-30 14:15:40,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1359, PETRI_PLACES=156, PETRI_TRANSITIONS=153} [2024-01-30 14:15:40,888 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 85 predicate places. [2024-01-30 14:15:40,888 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 153 transitions, 1359 flow [2024-01-30 14:15:40,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 43.0) internal successors, (559), 13 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:40,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:40,888 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:40,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-30 14:15:41,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:41,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:41,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:41,101 INFO L85 PathProgramCache]: Analyzing trace with hash 83260793, now seen corresponding path program 1 times [2024-01-30 14:15:41,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:41,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731051633] [2024-01-30 14:15:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:41,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:42,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:42,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731051633] [2024-01-30 14:15:42,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731051633] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:15:42,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478990522] [2024-01-30 14:15:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:42,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:15:42,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:42,246 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-30 14:15:42,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-30 14:15:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:42,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-30 14:15:42,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:15:42,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-01-30 14:15:42,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2024-01-30 14:15:42,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 94 [2024-01-30 14:15:42,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 33 [2024-01-30 14:15:43,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-30 14:15:43,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 57 [2024-01-30 14:15:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:43,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:15:44,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 106 [2024-01-30 14:15:44,074 INFO L349 Elim1Store]: treesize reduction 43, result has 48.2 percent of original size [2024-01-30 14:15:44,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 138 [2024-01-30 14:15:44,169 INFO L349 Elim1Store]: treesize reduction 18, result has 55.0 percent of original size [2024-01-30 14:15:44,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 134 treesize of output 128 [2024-01-30 14:15:44,280 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-01-30 14:15:44,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 96 [2024-01-30 14:15:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:44,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478990522] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:15:44,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:15:44,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 24 [2024-01-30 14:15:44,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409572960] [2024-01-30 14:15:44,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:15:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-01-30 14:15:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:44,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-01-30 14:15:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-01-30 14:15:44,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-01-30 14:15:44,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 153 transitions, 1359 flow. Second operand has 25 states, 25 states have (on average 41.72) internal successors, (1043), 25 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:44,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:44,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-01-30 14:15:44,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:55,002 INFO L124 PetriNetUnfolderBase]: 21107/51162 cut-off events. [2024-01-30 14:15:55,003 INFO L125 PetriNetUnfolderBase]: For 136517/136557 co-relation queries the response was YES. [2024-01-30 14:15:55,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159671 conditions, 51162 events. 21107/51162 cut-off events. For 136517/136557 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 510710 event pairs, 2923 based on Foata normal form. 162/50943 useless extension candidates. Maximal degree in co-relation 159619. Up to 7382 conditions per place. [2024-01-30 14:15:55,475 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 707 selfloop transitions, 180 changer transitions 47/955 dead transitions. [2024-01-30 14:15:55,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 955 transitions, 8277 flow [2024-01-30 14:15:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-01-30 14:15:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-01-30 14:15:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 2760 transitions. [2024-01-30 14:15:55,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675146771037182 [2024-01-30 14:15:55,481 INFO L175 Difference]: Start difference. First operand has 156 places, 153 transitions, 1359 flow. Second operand 56 states and 2760 transitions. [2024-01-30 14:15:55,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 955 transitions, 8277 flow [2024-01-30 14:15:56,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 955 transitions, 7741 flow, removed 240 selfloop flow, removed 1 redundant places. [2024-01-30 14:15:56,343 INFO L231 Difference]: Finished difference. Result has 224 places, 298 transitions, 2952 flow [2024-01-30 14:15:56,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2952, PETRI_PLACES=224, PETRI_TRANSITIONS=298} [2024-01-30 14:15:56,344 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 153 predicate places. [2024-01-30 14:15:56,344 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 298 transitions, 2952 flow [2024-01-30 14:15:56,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 41.72) internal successors, (1043), 25 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:56,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:56,344 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:56,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-30 14:15:56,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-01-30 14:15:56,545 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:15:56,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:56,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1918160847, now seen corresponding path program 1 times [2024-01-30 14:15:56,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:56,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370673909] [2024-01-30 14:15:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-01-30 14:15:56,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:56,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370673909] [2024-01-30 14:15:56,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370673909] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:56,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:56,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:15:56,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250098018] [2024-01-30 14:15:56,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:56,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:15:56,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:15:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:15:56,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-30 14:15:56,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 298 transitions, 2952 flow. Second operand has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:56,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:56,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-30 14:15:56,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:16:07,668 INFO L124 PetriNetUnfolderBase]: 29557/59184 cut-off events. [2024-01-30 14:16:07,669 INFO L125 PetriNetUnfolderBase]: For 130193/130417 co-relation queries the response was YES. [2024-01-30 14:16:08,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193082 conditions, 59184 events. 29557/59184 cut-off events. For 130193/130417 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 532112 event pairs, 7185 based on Foata normal form. 0/58528 useless extension candidates. Maximal degree in co-relation 193015. Up to 30618 conditions per place. [2024-01-30 14:16:08,344 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 344 selfloop transitions, 9 changer transitions 2/432 dead transitions. [2024-01-30 14:16:08,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 432 transitions, 4748 flow [2024-01-30 14:16:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:16:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:16:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-01-30 14:16:08,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6050228310502284 [2024-01-30 14:16:08,345 INFO L175 Difference]: Start difference. First operand has 224 places, 298 transitions, 2952 flow. Second operand 6 states and 265 transitions. [2024-01-30 14:16:08,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 432 transitions, 4748 flow [2024-01-30 14:16:09,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 432 transitions, 4511 flow, removed 93 selfloop flow, removed 9 redundant places. [2024-01-30 14:16:09,449 INFO L231 Difference]: Finished difference. Result has 219 places, 298 transitions, 2792 flow [2024-01-30 14:16:09,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2792, PETRI_PLACES=219, PETRI_TRANSITIONS=298} [2024-01-30 14:16:09,450 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 148 predicate places. [2024-01-30 14:16:09,450 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 298 transitions, 2792 flow [2024-01-30 14:16:09,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:16:09,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:16:09,451 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:16:09,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-30 14:16:09,451 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 39 more)] === [2024-01-30 14:16:09,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:16:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2119194700, now seen corresponding path program 2 times [2024-01-30 14:16:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:16:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578236957] [2024-01-30 14:16:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:16:09,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:16:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:16:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:09,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:16:09,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578236957] [2024-01-30 14:16:09,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578236957] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:16:09,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221305108] [2024-01-30 14:16:09,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-30 14:16:09,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:16:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:16:09,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-30 14:16:09,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-30 14:16:09,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-30 14:16:09,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-30 14:16:09,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-30 14:16:09,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:16:09,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-30 14:16:09,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-30 14:16:09,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-30 14:16:10,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-30 14:16:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:10,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:16:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:16:10,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221305108] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:16:10,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:16:10,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2024-01-30 14:16:10,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944690102] [2024-01-30 14:16:10,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:16:10,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-01-30 14:16:10,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:16:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-01-30 14:16:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2024-01-30 14:16:10,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-01-30 14:16:10,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 298 transitions, 2792 flow. Second operand has 21 states, 21 states have (on average 43.04761904761905) internal successors, (904), 21 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:16:10,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:16:10,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-01-30 14:16:10,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand