./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/bench-exp2x6.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/bench-exp2x6.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-d8006e4-m [2024-02-05 10:31:42,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:31:42,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:31:42,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:31:42,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:31:42,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:31:42,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:31:42,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:31:42,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:31:42,714 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:31:42,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:31:42,714 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:31:42,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:31:42,716 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:31:42,716 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:31:42,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:31:42,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:31:42,717 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:31:42,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:31:42,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:31:42,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:31:42,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:31:42,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:31:42,718 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:31:42,719 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:31:42,719 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:31:42,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:31:42,719 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:31:42,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:31:42,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:31:42,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:31:42,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:31:42,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:31:42,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:31:42,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:31:42,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:31:42,722 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:31:42,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:31:42,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:31:42,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:31:42,722 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:31:42,723 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:31:42,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:31:42,723 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:31:42,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:31:42,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:31:42,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:31:42,953 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:31:42,953 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:31:42,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2024-02-05 10:31:44,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:31:44,209 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:31:44,210 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2024-02-05 10:31:44,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c3c55ef/9a4381fb537c4aad8e754c1297a6b50d/FLAGe20d0250b [2024-02-05 10:31:44,228 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c3c55ef/9a4381fb537c4aad8e754c1297a6b50d [2024-02-05 10:31:44,230 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:31:44,231 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:31:44,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/bench-exp2x6.wvr.yml/witness.yml [2024-02-05 10:31:44,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:31:44,324 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:31:44,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:31:44,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:31:44,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:31:44,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:31:44" (1/2) ... [2024-02-05 10:31:44,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688f90ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:31:44, skipping insertion in model container [2024-02-05 10:31:44,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:31:44" (1/2) ... [2024-02-05 10:31:44,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63545113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:31:44, skipping insertion in model container [2024-02-05 10:31:44,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:31:44" (2/2) ... [2024-02-05 10:31:44,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688f90ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44, skipping insertion in model container [2024-02-05 10:31:44,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:31:44" (2/2) ... [2024-02-05 10:31:44,332 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:31:44,355 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:31:44,356 INFO L101 nessWitnessExtractor]: Location invariant before [L40-L40] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,356 INFO L101 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,357 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,357 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,357 INFO L101 nessWitnessExtractor]: Loop invariant at [L38-L38] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,358 INFO L101 nessWitnessExtractor]: Location invariant before [L88-L88] (x4 == 0U) && (n == 0U) [2024-02-05 10:31:44,358 INFO L101 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,358 INFO L101 nessWitnessExtractor]: Location invariant before [L87-L87] ((x3 == 0U) && (x4 == 0U)) && (n == 0U) [2024-02-05 10:31:44,358 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,358 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] (((x2 == 0U) && (x3 == 0U)) && (x4 == 0U)) && (n == 0U) [2024-02-05 10:31:44,358 INFO L101 nessWitnessExtractor]: Location invariant before [L85-L85] (((((((((0LL - (long long )x1) + (long long )x3 >= 0LL) && ((long long )x1 + (long long )x3 >= 0LL)) && ((0LL - (long long )x1) - (long long )x3 >= 0LL)) && ((long long )x1 - (long long )x3 >= 0LL)) && (x1 == 0U)) && (x2 == 0U)) && (x3 == 0U)) && (x4 == 0U)) && (n == 0U) [2024-02-05 10:31:44,358 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,359 INFO L101 nessWitnessExtractor]: Location invariant before [L64-L64] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,359 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,359 INFO L101 nessWitnessExtractor]: Loop invariant at [L60-L60] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,359 INFO L101 nessWitnessExtractor]: Location invariant before [L67-L67] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,359 INFO L101 nessWitnessExtractor]: Location invariant before [L56-L56] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,359 INFO L101 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,359 INFO L101 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,360 INFO L101 nessWitnessExtractor]: Location invariant before [L78-L78] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,360 INFO L101 nessWitnessExtractor]: Loop invariant at [L49-L49] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,360 INFO L101 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,360 INFO L101 nessWitnessExtractor]: Location invariant before [L72-L72] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,361 INFO L101 nessWitnessExtractor]: Loop invariant at [L71-L71] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,361 INFO L101 nessWitnessExtractor]: Location invariant before [L89-L89] n == 0U [2024-02-05 10:31:44,361 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,361 INFO L101 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,361 INFO L101 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,361 INFO L101 nessWitnessExtractor]: Location invariant before [L39-L39] (unsigned long )_argptr == 0UL [2024-02-05 10:31:44,384 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:31:44,557 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c[2505,2518] [2024-02-05 10:31:44,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:31:44,575 INFO L204 MainTranslator]: Completed pre-run 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 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 [2024-02-05 10:31:44,713 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c[2505,2518] [2024-02-05 10:31:44,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:31:44,724 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:31:44,728 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44 WrapperNode [2024-02-05 10:31:44,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:31:44,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:31:44,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:31:44,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:31:44,744 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 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,762 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 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,796 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2024-02-05 10:31:44,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:31:44,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:31:44,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:31:44,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:31:44,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,829 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-05 10:31:44,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:31:44,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:31:44,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:31:44,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:31:44,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (1/1) ... [2024-02-05 10:31:44,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:31:44,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:31:44,884 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) [2024-02-05 10:31:44,920 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 [2024-02-05 10:31:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:31:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-05 10:31:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-05 10:31:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-05 10:31:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-05 10:31:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-05 10:31:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-05 10:31:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-05 10:31:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-05 10:31:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:31:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:31:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:31:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-05 10:31:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-05 10:31:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:31:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:31:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:31:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:31:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-05 10:31:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-05 10:31:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:31:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:31:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:31:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:31:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:31:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-05 10:31:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-05 10:31:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:31:44,950 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:31:45,050 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:31:45,051 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:31:45,299 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:31:45,300 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:31:45,421 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:31:45,421 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-05 10:31:45,422 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:31:45 BoogieIcfgContainer [2024-02-05 10:31:45,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:31:45,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:31:45,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:31:45,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:31:45,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:31:44" (1/4) ... [2024-02-05 10:31:45,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5663ce61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:31:45, skipping insertion in model container [2024-02-05 10:31:45,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:31:44" (2/4) ... [2024-02-05 10:31:45,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5663ce61 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:31:45, skipping insertion in model container [2024-02-05 10:31:45,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:31:44" (3/4) ... [2024-02-05 10:31:45,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5663ce61 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:31:45, skipping insertion in model container [2024-02-05 10:31:45,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:31:45" (4/4) ... [2024-02-05 10:31:45,431 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2024-02-05 10:31:45,446 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:31:45,446 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-02-05 10:31:45,446 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:31:45,524 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-05 10:31:45,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 97 transitions, 222 flow [2024-02-05 10:31:45,605 INFO L124 PetriNetUnfolderBase]: 8/93 cut-off events. [2024-02-05 10:31:45,606 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:31:45,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 93 events. 8/93 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 273 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2024-02-05 10:31:45,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 97 transitions, 222 flow [2024-02-05 10:31:45,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 92 transitions, 208 flow [2024-02-05 10:31:45,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:31:45,631 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;@70a6c0f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:31:45,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-02-05 10:31:45,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:31:45,634 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:31:45,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:31:45,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:45,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:31:45,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:31:45,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash 13404, now seen corresponding path program 1 times [2024-02-05 10:31:45,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:45,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968134984] [2024-02-05 10:31:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:45,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:46,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:46,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968134984] [2024-02-05 10:31:46,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968134984] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:46,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:46,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:31:46,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799071964] [2024-02-05 10:31:46,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:46,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:31:46,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:46,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:31:46,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:31:46,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-02-05 10:31:46,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:46,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:46,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-02-05 10:31:46,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:49,465 INFO L124 PetriNetUnfolderBase]: 24389/41309 cut-off events. [2024-02-05 10:31:49,466 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES. [2024-02-05 10:31:49,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73241 conditions, 41309 events. 24389/41309 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 371954 event pairs, 17678 based on Foata normal form. 6617/45224 useless extension candidates. Maximal degree in co-relation 65585. Up to 30726 conditions per place. [2024-02-05 10:31:49,810 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 48 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-02-05 10:31:49,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 87 transitions, 298 flow [2024-02-05 10:31:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:31:49,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:31:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-02-05 10:31:49,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6116838487972509 [2024-02-05 10:31:49,821 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 208 flow. Second operand 3 states and 178 transitions. [2024-02-05 10:31:49,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 87 transitions, 298 flow [2024-02-05 10:31:49,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 87 transitions, 282 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:31:49,835 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 186 flow [2024-02-05 10:31:49,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-02-05 10:31:49,839 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -7 predicate places. [2024-02-05 10:31:49,839 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 186 flow [2024-02-05 10:31:49,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:49,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:49,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-05 10:31:49,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:31:49,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:31:49,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:49,841 INFO L85 PathProgramCache]: Analyzing trace with hash 415900, now seen corresponding path program 1 times [2024-02-05 10:31:49,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:49,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732425225] [2024-02-05 10:31:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:49,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:49,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:49,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732425225] [2024-02-05 10:31:49,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732425225] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:49,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:49,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:31:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734416091] [2024-02-05 10:31:49,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:49,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:31:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:31:49,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:31:49,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-02-05 10:31:49,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:49,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:49,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-02-05 10:31:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:52,348 INFO L124 PetriNetUnfolderBase]: 24389/41308 cut-off events. [2024-02-05 10:31:52,349 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-02-05 10:31:52,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72438 conditions, 41308 events. 24389/41308 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 371943 event pairs, 17678 based on Foata normal form. 0/38607 useless extension candidates. Maximal degree in co-relation 72429. Up to 30724 conditions per place. [2024-02-05 10:31:52,710 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 47 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-02-05 10:31:52,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 282 flow [2024-02-05 10:31:52,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:31:52,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:31:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-02-05 10:31:52,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048109965635738 [2024-02-05 10:31:52,716 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 186 flow. Second operand 3 states and 176 transitions. [2024-02-05 10:31:52,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 282 flow [2024-02-05 10:31:52,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:31:52,719 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 184 flow [2024-02-05 10:31:52,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2024-02-05 10:31:52,720 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -8 predicate places. [2024-02-05 10:31:52,720 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 184 flow [2024-02-05 10:31:52,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:52,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:52,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-05 10:31:52,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:31:52,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:31:52,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash 12893355, now seen corresponding path program 1 times [2024-02-05 10:31:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733686827] [2024-02-05 10:31:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:52,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:52,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:52,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733686827] [2024-02-05 10:31:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733686827] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:52,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:31:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581740053] [2024-02-05 10:31:52,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:52,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:31:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:31:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:31:52,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-02-05 10:31:52,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:52,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:52,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-02-05 10:31:52,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:55,096 INFO L124 PetriNetUnfolderBase]: 24389/41307 cut-off events. [2024-02-05 10:31:55,096 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-02-05 10:31:55,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72436 conditions, 41307 events. 24389/41307 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 371981 event pairs, 17678 based on Foata normal form. 0/38607 useless extension candidates. Maximal degree in co-relation 72425. Up to 30722 conditions per place. [2024-02-05 10:31:55,338 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 46 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-02-05 10:31:55,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 278 flow [2024-02-05 10:31:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:31:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:31:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-02-05 10:31:55,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6116838487972509 [2024-02-05 10:31:55,340 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 184 flow. Second operand 3 states and 178 transitions. [2024-02-05 10:31:55,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 278 flow [2024-02-05 10:31:55,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 85 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:31:55,342 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 182 flow [2024-02-05 10:31:55,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-02-05 10:31:55,343 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -9 predicate places. [2024-02-05 10:31:55,343 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 182 flow [2024-02-05 10:31:55,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:55,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:55,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:31:55,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:31:55,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:31:55,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash 399694422, now seen corresponding path program 1 times [2024-02-05 10:31:55,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:55,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347834008] [2024-02-05 10:31:55,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:55,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:55,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:55,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347834008] [2024-02-05 10:31:55,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347834008] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:55,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:55,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:31:55,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885716898] [2024-02-05 10:31:55,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:55,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:31:55,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:31:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:31:55,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 97 [2024-02-05 10:31:55,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:55,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:55,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 97 [2024-02-05 10:31:55,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:57,576 INFO L124 PetriNetUnfolderBase]: 24389/41306 cut-off events. [2024-02-05 10:31:57,577 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-02-05 10:31:57,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72434 conditions, 41306 events. 24389/41306 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 372015 event pairs, 17678 based on Foata normal form. 0/38607 useless extension candidates. Maximal degree in co-relation 72421. Up to 30720 conditions per place. [2024-02-05 10:31:57,872 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-02-05 10:31:57,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 274 flow [2024-02-05 10:31:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:31:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:31:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2024-02-05 10:31:57,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6185567010309279 [2024-02-05 10:31:57,874 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 182 flow. Second operand 3 states and 180 transitions. [2024-02-05 10:31:57,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 274 flow [2024-02-05 10:31:57,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:31:57,876 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 180 flow [2024-02-05 10:31:57,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-02-05 10:31:57,877 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -10 predicate places. [2024-02-05 10:31:57,877 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 180 flow [2024-02-05 10:31:57,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:57,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:57,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:31:57,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:31:57,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:31:57,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash -494374428, now seen corresponding path program 1 times [2024-02-05 10:31:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:57,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732099355] [2024-02-05 10:31:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:57,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732099355] [2024-02-05 10:31:57,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732099355] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:57,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:57,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:31:57,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730587880] [2024-02-05 10:31:57,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:57,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:31:57,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:57,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:31:57,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:31:57,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-02-05 10:31:57,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:57,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:57,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-02-05 10:31:57,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:00,130 INFO L124 PetriNetUnfolderBase]: 24389/41305 cut-off events. [2024-02-05 10:32:00,131 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-02-05 10:32:00,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72432 conditions, 41305 events. 24389/41305 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 372122 event pairs, 17678 based on Foata normal form. 0/38607 useless extension candidates. Maximal degree in co-relation 72417. Up to 30718 conditions per place. [2024-02-05 10:32:00,631 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 44 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-02-05 10:32:00,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 270 flow [2024-02-05 10:32:00,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:32:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:32:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-02-05 10:32:00,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6254295532646048 [2024-02-05 10:32:00,633 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 180 flow. Second operand 3 states and 182 transitions. [2024-02-05 10:32:00,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 270 flow [2024-02-05 10:32:00,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:32:00,634 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 178 flow [2024-02-05 10:32:00,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2024-02-05 10:32:00,635 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -11 predicate places. [2024-02-05 10:32:00,635 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 178 flow [2024-02-05 10:32:00,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:00,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:00,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:00,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:32:00,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:32:00,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash -465197451, now seen corresponding path program 1 times [2024-02-05 10:32:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:00,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120106318] [2024-02-05 10:32:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:00,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:00,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:00,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120106318] [2024-02-05 10:32:00,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120106318] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:00,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:00,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:32:00,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826880415] [2024-02-05 10:32:00,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:00,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:32:00,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:32:00,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:32:00,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-02-05 10:32:00,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:00,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:00,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-02-05 10:32:00,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:01,731 INFO L124 PetriNetUnfolderBase]: 13611/20381 cut-off events. [2024-02-05 10:32:01,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:32:01,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37875 conditions, 20381 events. 13611/20381 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 148348 event pairs, 1013 based on Foata normal form. 518/19634 useless extension candidates. Maximal degree in co-relation 37858. Up to 15287 conditions per place. [2024-02-05 10:32:01,850 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 63 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-02-05 10:32:01,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 343 flow [2024-02-05 10:32:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:32:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:32:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2024-02-05 10:32:01,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262886597938144 [2024-02-05 10:32:01,852 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 178 flow. Second operand 4 states and 243 transitions. [2024-02-05 10:32:01,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 343 flow [2024-02-05 10:32:01,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 99 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:32:01,854 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 166 flow [2024-02-05 10:32:01,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-02-05 10:32:01,855 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -16 predicate places. [2024-02-05 10:32:01,855 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 166 flow [2024-02-05 10:32:01,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:01,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:01,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:01,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:32:01,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:32:01,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:01,856 INFO L85 PathProgramCache]: Analyzing trace with hash -380453108, now seen corresponding path program 1 times [2024-02-05 10:32:01,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:01,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471056100] [2024-02-05 10:32:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:01,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:01,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:01,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471056100] [2024-02-05 10:32:01,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471056100] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:01,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:01,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:32:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990111479] [2024-02-05 10:32:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:01,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:32:01,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:01,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:32:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:32:01,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-02-05 10:32:01,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:01,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:01,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-02-05 10:32:01,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:03,147 INFO L124 PetriNetUnfolderBase]: 13542/24630 cut-off events. [2024-02-05 10:32:03,148 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-02-05 10:32:03,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42055 conditions, 24630 events. 13542/24630 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 1420. Compared 224430 event pairs, 5166 based on Foata normal form. 588/22982 useless extension candidates. Maximal degree in co-relation 42034. Up to 14954 conditions per place. [2024-02-05 10:32:03,316 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 68 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2024-02-05 10:32:03,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 351 flow [2024-02-05 10:32:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:32:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:32:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-02-05 10:32:03,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6391752577319587 [2024-02-05 10:32:03,319 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 166 flow. Second operand 4 states and 248 transitions. [2024-02-05 10:32:03,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 351 flow [2024-02-05 10:32:03,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:32:03,320 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 155 flow [2024-02-05 10:32:03,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-02-05 10:32:03,321 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -21 predicate places. [2024-02-05 10:32:03,321 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 155 flow [2024-02-05 10:32:03,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:03,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:03,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:03,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:32:03,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:32:03,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash -544406681, now seen corresponding path program 1 times [2024-02-05 10:32:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870140626] [2024-02-05 10:32:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:03,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:03,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870140626] [2024-02-05 10:32:03,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870140626] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:03,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:03,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:32:03,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044177931] [2024-02-05 10:32:03,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:03,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:32:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:32:03,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:32:03,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-02-05 10:32:03,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:03,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:03,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-02-05 10:32:03,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:04,429 INFO L124 PetriNetUnfolderBase]: 13398/22045 cut-off events. [2024-02-05 10:32:04,429 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2024-02-05 10:32:04,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39307 conditions, 22045 events. 13398/22045 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 174205 event pairs, 2032 based on Foata normal form. 588/21219 useless extension candidates. Maximal degree in co-relation 39287. Up to 14690 conditions per place. [2024-02-05 10:32:04,555 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 73 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-02-05 10:32:04,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 360 flow [2024-02-05 10:32:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:32:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:32:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-02-05 10:32:04,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6520618556701031 [2024-02-05 10:32:04,557 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 155 flow. Second operand 4 states and 253 transitions. [2024-02-05 10:32:04,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 360 flow [2024-02-05 10:32:04,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 97 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:32:04,558 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 144 flow [2024-02-05 10:32:04,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-02-05 10:32:04,559 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -26 predicate places. [2024-02-05 10:32:04,559 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 144 flow [2024-02-05 10:32:04,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:04,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:04,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:04,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-05 10:32:04,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:32:04,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash 808588421, now seen corresponding path program 1 times [2024-02-05 10:32:04,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:04,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640759683] [2024-02-05 10:32:04,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:04,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:04,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640759683] [2024-02-05 10:32:04,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640759683] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:04,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:04,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:32:04,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948837859] [2024-02-05 10:32:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:04,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:32:04,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:04,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:32:04,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:32:04,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-02-05 10:32:04,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:04,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:04,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-02-05 10:32:04,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:05,561 INFO L124 PetriNetUnfolderBase]: 13624/19561 cut-off events. [2024-02-05 10:32:05,561 INFO L125 PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES. [2024-02-05 10:32:05,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37115 conditions, 19561 events. 13624/19561 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 129861 event pairs, 1211 based on Foata normal form. 518/19163 useless extension candidates. Maximal degree in co-relation 37095. Up to 13090 conditions per place. [2024-02-05 10:32:05,678 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 78 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-02-05 10:32:05,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 369 flow [2024-02-05 10:32:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:32:05,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:32:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-02-05 10:32:05,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6649484536082474 [2024-02-05 10:32:05,680 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 144 flow. Second operand 4 states and 258 transitions. [2024-02-05 10:32:05,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 369 flow [2024-02-05 10:32:05,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 96 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:32:05,682 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 133 flow [2024-02-05 10:32:05,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-02-05 10:32:05,683 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -31 predicate places. [2024-02-05 10:32:05,683 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 133 flow [2024-02-05 10:32:05,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:05,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:05,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:05,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-05 10:32:05,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:32:05,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash -567603789, now seen corresponding path program 1 times [2024-02-05 10:32:05,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:05,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472277480] [2024-02-05 10:32:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:05,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:05,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472277480] [2024-02-05 10:32:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472277480] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:32:05,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226210538] [2024-02-05 10:32:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:32:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:32:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:32:05,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 97 [2024-02-05 10:32:05,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:05,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:05,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 97 [2024-02-05 10:32:05,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:06,855 INFO L124 PetriNetUnfolderBase]: 14398/21880 cut-off events. [2024-02-05 10:32:06,855 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2024-02-05 10:32:06,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40502 conditions, 21880 events. 14398/21880 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 1240. Compared 157134 event pairs, 4677 based on Foata normal form. 1/20104 useless extension candidates. Maximal degree in co-relation 40482. Up to 17904 conditions per place. [2024-02-05 10:32:06,977 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 56 selfloop transitions, 7 changer transitions 1/81 dead transitions. [2024-02-05 10:32:06,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 314 flow [2024-02-05 10:32:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:32:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:32:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-02-05 10:32:06,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.738831615120275 [2024-02-05 10:32:06,979 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 133 flow. Second operand 3 states and 215 transitions. [2024-02-05 10:32:06,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 314 flow [2024-02-05 10:32:06,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:32:06,983 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 169 flow [2024-02-05 10:32:06,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-02-05 10:32:06,985 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -30 predicate places. [2024-02-05 10:32:06,988 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 169 flow [2024-02-05 10:32:06,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:06,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:06,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:06,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-05 10:32:06,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:32:06,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:06,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2063566010, now seen corresponding path program 1 times [2024-02-05 10:32:06,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:06,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651893891] [2024-02-05 10:32:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:06,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:07,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:07,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651893891] [2024-02-05 10:32:07,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651893891] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:07,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:07,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:32:07,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676248248] [2024-02-05 10:32:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:07,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:32:07,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:07,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:32:07,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:32:07,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 97 [2024-02-05 10:32:07,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:07,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:07,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 97 [2024-02-05 10:32:07,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:09,417 INFO L124 PetriNetUnfolderBase]: 29907/43092 cut-off events. [2024-02-05 10:32:09,417 INFO L125 PetriNetUnfolderBase]: For 6954/7504 co-relation queries the response was YES. [2024-02-05 10:32:09,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89146 conditions, 43092 events. 29907/43092 cut-off events. For 6954/7504 co-relation queries the response was YES. Maximal size of possible extension queue 2260. Compared 308220 event pairs, 9679 based on Foata normal form. 22/37625 useless extension candidates. Maximal degree in co-relation 89121. Up to 20001 conditions per place. [2024-02-05 10:32:09,714 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 118 selfloop transitions, 15 changer transitions 0/146 dead transitions. [2024-02-05 10:32:09,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 146 transitions, 650 flow [2024-02-05 10:32:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:32:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:32:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2024-02-05 10:32:09,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.734020618556701 [2024-02-05 10:32:09,716 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 169 flow. Second operand 5 states and 356 transitions. [2024-02-05 10:32:09,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 146 transitions, 650 flow [2024-02-05 10:32:09,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 146 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:32:09,718 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 260 flow [2024-02-05 10:32:09,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-02-05 10:32:09,719 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -24 predicate places. [2024-02-05 10:32:09,719 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 260 flow [2024-02-05 10:32:09,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:09,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:09,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:09,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-05 10:32:09,720 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-05 10:32:09,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash -437746028, now seen corresponding path program 2 times [2024-02-05 10:32:09,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:09,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474019967] [2024-02-05 10:32:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:09,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:09,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:09,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474019967] [2024-02-05 10:32:09,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474019967] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-05 10:32:09,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044644025] [2024-02-05 10:32:09,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-05 10:32:09,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-05 10:32:09,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:32:09,791 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) [2024-02-05 10:32:09,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-05 10:32:09,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-05 10:32:09,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-05 10:32:09,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-05 10:32:09,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-05 10:32:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:10,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-05 10:32:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:10,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044644025] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-05 10:32:10,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-05 10:32:10,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-02-05 10:32:10,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903198996] [2024-02-05 10:32:10,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-05 10:32:10,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:32:10,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:10,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:32:10,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:32:10,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 97 [2024-02-05 10:32:10,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:10,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:10,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 97 [2024-02-05 10:32:10,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand