./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/mult-comm.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.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-a340643-m [2024-01-27 14:51:06,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:51:06,394 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:51:06,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:51:06,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:51:06,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:51:06,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:51:06,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:51:06,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:51:06,413 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:51:06,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:51:06,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:51:06,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:51:06,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:51:06,414 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:51:06,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:51:06,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:51:06,415 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:51:06,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:51:06,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:51:06,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:51:06,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:51:06,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:51:06,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:51:06,417 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:51:06,417 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:51:06,417 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:51:06,417 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:51:06,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:51:06,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:51:06,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:51:06,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:51:06,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:51:06,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:51:06,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:51:06,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:51:06,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:51:06,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:51:06,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:51:06,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:51:06,420 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:51:06,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:51:06,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:51:06,420 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:51:06,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:51:06,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:51:06,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:51:06,669 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:51:06,669 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:51:06,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c [2024-01-27 14:51:07,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:51:07,737 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:51:07,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c [2024-01-27 14:51:07,743 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92d9d2e92/8c5d088851cc4aa9824ca1ca9103960d/FLAG1def6f6ac [2024-01-27 14:51:07,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92d9d2e92/8c5d088851cc4aa9824ca1ca9103960d [2024-01-27 14:51:07,761 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:51:07,761 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:51:07,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.wvr.yml/witness.yml [2024-01-27 14:51:07,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:51:07,819 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:51:07,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:51:07,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:51:07,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:51:07,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:51:07" (1/2) ... [2024-01-27 14:51:07,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1276c751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:51:07, skipping insertion in model container [2024-01-27 14:51:07,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:51:07" (1/2) ... [2024-01-27 14:51:07,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11a37078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:51:07, skipping insertion in model container [2024-01-27 14:51:07,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:51:07" (2/2) ... [2024-01-27 14:51:07,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1276c751 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:07, skipping insertion in model container [2024-01-27 14:51:07,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:51:07" (2/2) ... [2024-01-27 14:51:07,825 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:51:07,839 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:51:07,840 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] x_1 == 0U [2024-01-27 14:51:07,840 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] x_2 == 0U [2024-01-27 14:51:07,840 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] x_1 == 0U [2024-01-27 14:51:07,840 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] x_2 == 0U [2024-01-27 14:51:07,840 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] b == 0U [2024-01-27 14:51:07,841 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-27 14:51:07,841 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] ((((((((((((0U == i && i == 0U) || (12U <= i && i <= 4294967294U)) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U [2024-01-27 14:51:07,841 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-27 14:51:07,841 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-01-27 14:51:07,841 INFO L98 nessWitnessExtractor]: Loop invariant at [L42-L44] (unsigned long )_argptr == 0UL [2024-01-27 14:51:07,841 INFO L98 nessWitnessExtractor]: Loop invariant at [L42-L44] (((((((((((12U <= i || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U) [2024-01-27 14:51:07,841 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] b == 0U [2024-01-27 14:51:07,842 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] x_2 == 0U [2024-01-27 14:51:07,842 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] ((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U) [2024-01-27 14:51:07,842 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-27 14:51:07,842 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] x_1 == 0U [2024-01-27 14:51:07,842 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (0LL - (long long )a) + (long long )b >= 0LL [2024-01-27 14:51:07,842 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (0LL - (long long )a) - (long long )b >= 0LL [2024-01-27 14:51:07,842 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] x_1 == 0U [2024-01-27 14:51:07,842 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] x_2 == 0U [2024-01-27 14:51:07,843 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (long long )a + (long long )b >= 0LL [2024-01-27 14:51:07,843 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (long long )a - (long long )b >= 0LL [2024-01-27 14:51:07,843 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] a == 0U [2024-01-27 14:51:07,843 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] b == 0U [2024-01-27 14:51:07,844 INFO L98 nessWitnessExtractor]: Loop invariant at [L50-L52] (unsigned long )_argptr == 0UL [2024-01-27 14:51:07,844 INFO L98 nessWitnessExtractor]: Loop invariant at [L50-L52] ((((((((((((0U == i && i == 0U) || 12U <= i) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U [2024-01-27 14:51:07,862 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:51:08,002 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/mult-comm.wvr.c[1936,1949] [2024-01-27 14:51:08,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:51:08,012 INFO L202 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 [2024-01-27 14:51:08,061 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/mult-comm.wvr.c[1936,1949] [2024-01-27 14:51:08,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:51:08,072 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:51:08,072 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08 WrapperNode [2024-01-27 14:51:08,073 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:51:08,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:51:08,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:51:08,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:51:08,080 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 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,095 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 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,117 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-01-27 14:51:08,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:51:08,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:51:08,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:51:08,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:51:08,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,151 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-27 14:51:08,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,174 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:51:08,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:51:08,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:51:08,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:51:08,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (1/1) ... [2024-01-27 14:51:08,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:51:08,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:51:08,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 14:51:08,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 14:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 14:51:08,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 14:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 14:51:08,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 14:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 14:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 14:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 14:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:51:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 14:51:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 14:51:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 14:51:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:51:08,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:51:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 14:51:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 14:51:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 14:51:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:51:08,266 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 14:51:08,341 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:51:08,343 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:51:08,605 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:51:08,606 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:51:08,673 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:51:08,677 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-27 14:51:08,677 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:51:08 BoogieIcfgContainer [2024-01-27 14:51:08,678 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:51:08,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:51:08,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:51:08,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:51:08,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:51:07" (1/4) ... [2024-01-27 14:51:08,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f26aa82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:51:08, skipping insertion in model container [2024-01-27 14:51:08,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:51:07" (2/4) ... [2024-01-27 14:51:08,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f26aa82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:51:08, skipping insertion in model container [2024-01-27 14:51:08,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:51:08" (3/4) ... [2024-01-27 14:51:08,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f26aa82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:51:08, skipping insertion in model container [2024-01-27 14:51:08,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:51:08" (4/4) ... [2024-01-27 14:51:08,685 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-01-27 14:51:08,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:51:08,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-01-27 14:51:08,698 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:51:08,763 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 14:51:08,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 172 flow [2024-01-27 14:51:08,827 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2024-01-27 14:51:08,827 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 14:51:08,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 2/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-01-27 14:51:08,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 172 flow [2024-01-27 14:51:08,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 76 transitions, 164 flow [2024-01-27 14:51:08,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:51:08,858 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;@70161921, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:51:08,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-01-27 14:51:08,862 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:51:08,863 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 14:51:08,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:51:08,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:08,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 14:51:08,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:08,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:08,870 INFO L85 PathProgramCache]: Analyzing trace with hash 9323, now seen corresponding path program 1 times [2024-01-27 14:51:08,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:08,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886957687] [2024-01-27 14:51:08,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:08,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:51:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:51:09,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:51:09,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886957687] [2024-01-27 14:51:09,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886957687] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:51:09,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:51:09,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:51:09,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432497176] [2024-01-27 14:51:09,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:51:09,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:51:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:51:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:51:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:51:09,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 79 [2024-01-27 14:51:09,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:09,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:51:09,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 79 [2024-01-27 14:51:09,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:51:09,281 INFO L124 PetriNetUnfolderBase]: 116/384 cut-off events. [2024-01-27 14:51:09,282 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-01-27 14:51:09,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 384 events. 116/384 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2183 event pairs, 102 based on Foata normal form. 56/349 useless extension candidates. Maximal degree in co-relation 530. Up to 201 conditions per place. [2024-01-27 14:51:09,289 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 20 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-01-27 14:51:09,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 192 flow [2024-01-27 14:51:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:51:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:51:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-01-27 14:51:09,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7341772151898734 [2024-01-27 14:51:09,302 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 164 flow. Second operand 3 states and 174 transitions. [2024-01-27 14:51:09,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 192 flow [2024-01-27 14:51:09,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 14:51:09,310 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 144 flow [2024-01-27 14:51:09,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-01-27 14:51:09,314 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -10 predicate places. [2024-01-27 14:51:09,314 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 144 flow [2024-01-27 14:51:09,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:09,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:09,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-27 14:51:09,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 14:51:09,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:09,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash 289273, now seen corresponding path program 1 times [2024-01-27 14:51:09,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:09,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615711159] [2024-01-27 14:51:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:09,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:51:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:51:09,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:51:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615711159] [2024-01-27 14:51:09,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615711159] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:51:09,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:51:09,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:51:09,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464053797] [2024-01-27 14:51:09,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:51:09,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:51:09,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:51:09,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:51:09,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:51:09,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 79 [2024-01-27 14:51:09,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:09,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:51:09,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 79 [2024-01-27 14:51:09,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:51:09,473 INFO L124 PetriNetUnfolderBase]: 97/307 cut-off events. [2024-01-27 14:51:09,474 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 14:51:09,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 307 events. 97/307 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1582 event pairs, 87 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 468. Up to 175 conditions per place. [2024-01-27 14:51:09,476 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 19 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-01-27 14:51:09,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 182 flow [2024-01-27 14:51:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:51:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:51:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-01-27 14:51:09,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.729957805907173 [2024-01-27 14:51:09,481 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 144 flow. Second operand 3 states and 173 transitions. [2024-01-27 14:51:09,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 182 flow [2024-01-27 14:51:09,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:51:09,483 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 140 flow [2024-01-27 14:51:09,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-01-27 14:51:09,484 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -12 predicate places. [2024-01-27 14:51:09,484 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 140 flow [2024-01-27 14:51:09,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:09,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:09,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 14:51:09,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 14:51:09,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:09,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:09,485 INFO L85 PathProgramCache]: Analyzing trace with hash 28101440, now seen corresponding path program 1 times [2024-01-27 14:51:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:09,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140400210] [2024-01-27 14:51:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:09,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:51:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:51:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:51:09,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140400210] [2024-01-27 14:51:09,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140400210] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:51:09,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:51:09,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:51:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748578604] [2024-01-27 14:51:09,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:51:09,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:51:09,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:51:09,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:51:09,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:51:09,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-27 14:51:09,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:09,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:51:09,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-27 14:51:09,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:51:09,655 INFO L124 PetriNetUnfolderBase]: 125/439 cut-off events. [2024-01-27 14:51:09,655 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-27 14:51:09,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 439 events. 125/439 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2587 event pairs, 61 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 663. Up to 121 conditions per place. [2024-01-27 14:51:09,658 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 31 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-01-27 14:51:09,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 226 flow [2024-01-27 14:51:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:51:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:51:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-01-27 14:51:09,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7763713080168776 [2024-01-27 14:51:09,659 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 140 flow. Second operand 3 states and 184 transitions. [2024-01-27 14:51:09,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 226 flow [2024-01-27 14:51:09,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:51:09,661 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 142 flow [2024-01-27 14:51:09,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-01-27 14:51:09,662 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -14 predicate places. [2024-01-27 14:51:09,662 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 142 flow [2024-01-27 14:51:09,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:09,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:09,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:51:09,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 14:51:09,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:09,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:09,663 INFO L85 PathProgramCache]: Analyzing trace with hash 871144950, now seen corresponding path program 1 times [2024-01-27 14:51:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:09,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844125968] [2024-01-27 14:51:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:09,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:51:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:51:09,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:51:09,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844125968] [2024-01-27 14:51:09,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844125968] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:51:09,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:51:09,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:51:09,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233190706] [2024-01-27 14:51:09,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:51:09,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:51:09,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:51:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:51:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:51:09,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-27 14:51:09,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:09,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:51:09,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-27 14:51:09,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:51:09,838 INFO L124 PetriNetUnfolderBase]: 217/720 cut-off events. [2024-01-27 14:51:09,839 INFO L125 PetriNetUnfolderBase]: For 46/50 co-relation queries the response was YES. [2024-01-27 14:51:09,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 720 events. 217/720 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4521 event pairs, 81 based on Foata normal form. 13/629 useless extension candidates. Maximal degree in co-relation 638. Up to 207 conditions per place. [2024-01-27 14:51:09,842 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 35 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-01-27 14:51:09,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 248 flow [2024-01-27 14:51:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:51:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:51:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-01-27 14:51:09,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7848101265822784 [2024-01-27 14:51:09,844 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 142 flow. Second operand 3 states and 186 transitions. [2024-01-27 14:51:09,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 248 flow [2024-01-27 14:51:09,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 14:51:09,847 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 146 flow [2024-01-27 14:51:09,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-01-27 14:51:09,848 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -15 predicate places. [2024-01-27 14:51:09,848 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 146 flow [2024-01-27 14:51:09,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:09,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:09,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:51:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 14:51:09,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:09,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1235689961, now seen corresponding path program 1 times [2024-01-27 14:51:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511486269] [2024-01-27 14:51:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:09,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:51:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:51:09,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:51:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511486269] [2024-01-27 14:51:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511486269] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:51:09,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:51:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:51:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472123329] [2024-01-27 14:51:09,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:51:09,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:51:09,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:51:09,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:51:09,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:51:09,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 79 [2024-01-27 14:51:09,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:09,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:51:09,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 79 [2024-01-27 14:51:09,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:51:10,053 INFO L124 PetriNetUnfolderBase]: 280/764 cut-off events. [2024-01-27 14:51:10,054 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-01-27 14:51:10,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 764 events. 280/764 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4837 event pairs, 159 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 857. Up to 320 conditions per place. [2024-01-27 14:51:10,058 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 39 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-01-27 14:51:10,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 259 flow [2024-01-27 14:51:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:51:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:51:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-01-27 14:51:10,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6424050632911392 [2024-01-27 14:51:10,059 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 146 flow. Second operand 4 states and 203 transitions. [2024-01-27 14:51:10,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 259 flow [2024-01-27 14:51:10,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 253 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 14:51:10,061 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 143 flow [2024-01-27 14:51:10,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-01-27 14:51:10,064 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -16 predicate places. [2024-01-27 14:51:10,064 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 143 flow [2024-01-27 14:51:10,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:10,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:10,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:51:10,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 14:51:10,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:10,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:10,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1185311936, now seen corresponding path program 1 times [2024-01-27 14:51:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:10,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560905533] [2024-01-27 14:51:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:10,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:51:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:51:10,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:51:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560905533] [2024-01-27 14:51:10,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560905533] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:51:10,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:51:10,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:51:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541295217] [2024-01-27 14:51:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:51:10,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:51:10,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:51:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:51:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:51:10,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-27 14:51:10,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:10,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:51:10,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-27 14:51:10,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:51:10,309 INFO L124 PetriNetUnfolderBase]: 176/518 cut-off events. [2024-01-27 14:51:10,309 INFO L125 PetriNetUnfolderBase]: For 98/106 co-relation queries the response was YES. [2024-01-27 14:51:10,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 518 events. 176/518 cut-off events. For 98/106 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2812 event pairs, 76 based on Foata normal form. 46/518 useless extension candidates. Maximal degree in co-relation 500. Up to 300 conditions per place. [2024-01-27 14:51:10,312 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 27 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-01-27 14:51:10,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 214 flow [2024-01-27 14:51:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:51:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:51:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2024-01-27 14:51:10,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183544303797469 [2024-01-27 14:51:10,313 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 143 flow. Second operand 4 states and 227 transitions. [2024-01-27 14:51:10,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 214 flow [2024-01-27 14:51:10,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 14:51:10,316 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 131 flow [2024-01-27 14:51:10,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-01-27 14:51:10,318 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -20 predicate places. [2024-01-27 14:51:10,318 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 131 flow [2024-01-27 14:51:10,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:10,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:10,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:51:10,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 14:51:10,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:10,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash -918864807, now seen corresponding path program 1 times [2024-01-27 14:51:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:10,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591446532] [2024-01-27 14:51:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:10,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:51:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:51:10,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:51:10,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591446532] [2024-01-27 14:51:10,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591446532] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:51:10,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:51:10,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:51:10,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080700760] [2024-01-27 14:51:10,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:51:10,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:51:10,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:51:10,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:51:10,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:51:10,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-27 14:51:10,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:10,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:51:10,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-27 14:51:10,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:51:10,481 INFO L124 PetriNetUnfolderBase]: 176/535 cut-off events. [2024-01-27 14:51:10,481 INFO L125 PetriNetUnfolderBase]: For 82/93 co-relation queries the response was YES. [2024-01-27 14:51:10,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 535 events. 176/535 cut-off events. For 82/93 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2995 event pairs, 6 based on Foata normal form. 72/598 useless extension candidates. Maximal degree in co-relation 788. Up to 274 conditions per place. [2024-01-27 14:51:10,484 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 30 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-01-27 14:51:10,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 216 flow [2024-01-27 14:51:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:51:10,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:51:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2024-01-27 14:51:10,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7310126582278481 [2024-01-27 14:51:10,485 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 131 flow. Second operand 4 states and 231 transitions. [2024-01-27 14:51:10,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 216 flow [2024-01-27 14:51:10,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:51:10,488 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 124 flow [2024-01-27 14:51:10,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-01-27 14:51:10,489 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -23 predicate places. [2024-01-27 14:51:10,489 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 124 flow [2024-01-27 14:51:10,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:10,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:10,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:51:10,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 14:51:10,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:10,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:10,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1894070793, now seen corresponding path program 1 times [2024-01-27 14:51:10,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:10,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335582884] [2024-01-27 14:51:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:51:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:51:10,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:51:10,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335582884] [2024-01-27 14:51:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335582884] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:51:10,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:51:10,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:51:10,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447966962] [2024-01-27 14:51:10,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:51:10,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:51:10,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:51:10,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:51:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:51:10,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 79 [2024-01-27 14:51:10,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:10,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:51:10,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 79 [2024-01-27 14:51:10,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:51:10,701 INFO L124 PetriNetUnfolderBase]: 222/552 cut-off events. [2024-01-27 14:51:10,702 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-01-27 14:51:10,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 552 events. 222/552 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2826 event pairs, 105 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-01-27 14:51:10,704 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 29 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-01-27 14:51:10,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 213 flow [2024-01-27 14:51:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:51:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:51:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-01-27 14:51:10,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7637130801687764 [2024-01-27 14:51:10,705 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 124 flow. Second operand 3 states and 181 transitions. [2024-01-27 14:51:10,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 213 flow [2024-01-27 14:51:10,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:51:10,708 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 132 flow [2024-01-27 14:51:10,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-01-27 14:51:10,709 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -23 predicate places. [2024-01-27 14:51:10,709 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 132 flow [2024-01-27 14:51:10,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:10,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:10,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:51:10,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 14:51:10,710 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:10,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash 114097758, now seen corresponding path program 1 times [2024-01-27 14:51:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:10,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208342407] [2024-01-27 14:51:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:10,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:51:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:51:10,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:51:10,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208342407] [2024-01-27 14:51:10,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208342407] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:51:10,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:51:10,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:51:10,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895905644] [2024-01-27 14:51:10,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:51:10,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:51:10,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:51:10,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:51:10,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:51:10,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 79 [2024-01-27 14:51:10,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:10,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:51:10,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 79 [2024-01-27 14:51:10,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:51:10,925 INFO L124 PetriNetUnfolderBase]: 222/520 cut-off events. [2024-01-27 14:51:10,925 INFO L125 PetriNetUnfolderBase]: For 206/221 co-relation queries the response was YES. [2024-01-27 14:51:10,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 520 events. 222/520 cut-off events. For 206/221 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2585 event pairs, 117 based on Foata normal form. 38/506 useless extension candidates. Maximal degree in co-relation 959. Up to 288 conditions per place. [2024-01-27 14:51:10,929 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 28 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-01-27 14:51:10,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 230 flow [2024-01-27 14:51:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:51:10,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:51:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-01-27 14:51:10,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7763713080168776 [2024-01-27 14:51:10,931 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 132 flow. Second operand 3 states and 184 transitions. [2024-01-27 14:51:10,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 230 flow [2024-01-27 14:51:10,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 14:51:10,933 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 155 flow [2024-01-27 14:51:10,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-01-27 14:51:10,934 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -21 predicate places. [2024-01-27 14:51:10,934 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 155 flow [2024-01-27 14:51:10,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:51:10,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:51:10,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:51:10,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 14:51:10,935 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-27 14:51:10,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:51:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash 864112633, now seen corresponding path program 1 times [2024-01-27 14:51:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:51:10,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084726224] [2024-01-27 14:51:10,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:51:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:51:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:51:10,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 14:51:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:51:10,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 14:51:10,987 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 14:51:10,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 50 remaining) [2024-01-27 14:51:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 50 remaining) [2024-01-27 14:51:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 50 remaining) [2024-01-27 14:51:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 50 remaining) [2024-01-27 14:51:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 50 remaining) [2024-01-27 14:51:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 50 remaining) [2024-01-27 14:51:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 50 remaining) [2024-01-27 14:51:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 50 remaining) [2024-01-27 14:51:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 50 remaining) [2024-01-27 14:51:10,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 50 remaining) [2024-01-27 14:51:10,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 50 remaining) [2024-01-27 14:51:10,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 50 remaining) [2024-01-27 14:51:10,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 50 remaining) [2024-01-27 14:51:10,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 50 remaining) [2024-01-27 14:51:10,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 50 remaining) [2024-01-27 14:51:10,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 50 remaining) [2024-01-27 14:51:10,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 50 remaining) [2024-01-27 14:51:10,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 50 remaining) [2024-01-27 14:51:10,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 50 remaining) [2024-01-27 14:51:10,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 50 remaining) [2024-01-27 14:51:10,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 50 remaining) [2024-01-27 14:51:10,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 50 remaining) [2024-01-27 14:51:10,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 50 remaining) [2024-01-27 14:51:10,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 50 remaining) [2024-01-27 14:51:10,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 50 remaining) [2024-01-27 14:51:10,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 50 remaining) [2024-01-27 14:51:10,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 50 remaining) [2024-01-27 14:51:10,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 50 remaining) [2024-01-27 14:51:10,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 50 remaining) [2024-01-27 14:51:10,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 50 remaining) [2024-01-27 14:51:10,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 50 remaining) [2024-01-27 14:51:10,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (18 of 50 remaining) [2024-01-27 14:51:10,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 50 remaining) [2024-01-27 14:51:10,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 50 remaining) [2024-01-27 14:51:10,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 50 remaining) [2024-01-27 14:51:10,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 50 remaining) [2024-01-27 14:51:10,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 50 remaining) [2024-01-27 14:51:10,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 50 remaining) [2024-01-27 14:51:10,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 50 remaining) [2024-01-27 14:51:10,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 50 remaining) [2024-01-27 14:51:10,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 50 remaining) [2024-01-27 14:51:10,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 50 remaining) [2024-01-27 14:51:10,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 50 remaining) [2024-01-27 14:51:10,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 50 remaining) [2024-01-27 14:51:10,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 50 remaining) [2024-01-27 14:51:10,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 50 remaining) [2024-01-27 14:51:10,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 50 remaining) [2024-01-27 14:51:10,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 50 remaining) [2024-01-27 14:51:10,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 50 remaining) [2024-01-27 14:51:10,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 50 remaining) [2024-01-27 14:51:10,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 14:51:10,999 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:51:11,008 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 14:51:11,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 14:51:11,037 INFO L503 ceAbstractionStarter]: Automizer considered 30 witness invariants [2024-01-27 14:51:11,038 INFO L504 ceAbstractionStarter]: WitnessConsidered=30 [2024-01-27 14:51:11,039 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 02:51:11 BasicIcfg [2024-01-27 14:51:11,039 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 14:51:11,039 INFO L158 Benchmark]: Toolchain (without parser) took 3220.77ms. Allocated memory was 184.5MB in the beginning and 234.9MB in the end (delta: 50.3MB). Free memory was 112.5MB in the beginning and 94.0MB in the end (delta: 18.5MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. [2024-01-27 14:51:11,039 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:51:11,040 INFO L158 Benchmark]: Witness Parser took 0.08ms. Allocated memory is still 184.5MB. Free memory was 115.8MB in the beginning and 115.6MB in the end (delta: 153.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:51:11,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.55ms. Allocated memory is still 184.5MB. Free memory was 112.4MB in the beginning and 149.6MB in the end (delta: -37.2MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2024-01-27 14:51:11,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.39ms. Allocated memory is still 184.5MB. Free memory was 149.6MB in the beginning and 148.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:51:11,041 INFO L158 Benchmark]: Boogie Preprocessor took 59.18ms. Allocated memory is still 184.5MB. Free memory was 147.6MB in the beginning and 145.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:51:11,042 INFO L158 Benchmark]: RCFGBuilder took 499.79ms. Allocated memory is still 184.5MB. Free memory was 145.5MB in the beginning and 115.6MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-27 14:51:11,042 INFO L158 Benchmark]: TraceAbstraction took 2359.25ms. Allocated memory was 184.5MB in the beginning and 234.9MB in the end (delta: 50.3MB). Free memory was 114.6MB in the beginning and 94.0MB in the end (delta: 20.6MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2024-01-27 14:51:11,043 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.08ms. Allocated memory is still 184.5MB. Free memory was 115.8MB in the beginning and 115.6MB in the end (delta: 153.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.55ms. Allocated memory is still 184.5MB. Free memory was 112.4MB in the beginning and 149.6MB in the end (delta: -37.2MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.39ms. Allocated memory is still 184.5MB. Free memory was 149.6MB in the beginning and 148.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 59.18ms. Allocated memory is still 184.5MB. Free memory was 147.6MB in the beginning and 145.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.79ms. Allocated memory is still 184.5MB. Free memory was 145.5MB in the beginning and 115.6MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2359.25ms. Allocated memory was 184.5MB in the beginning and 234.9MB in the end (delta: 50.3MB). Free memory was 114.6MB in the beginning and 94.0MB in the end (delta: 20.6MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 unsigned int x_1, x_2, a, b; [L58] 0 pthread_t t1, t2; VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[a],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,CastExpression[ACSLType[long long],IdentifierExpression[a]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,CastExpression[ACSLType[long long],IdentifierExpression[a]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] [L61] 0 a = __VERIFIER_nondet_uint() [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[0U]]]] VAL [b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]]] VAL [b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]]] [L62] 0 b = __VERIFIER_nondet_uint() [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]]] VAL [t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]]] [L64] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [_argptr={0:0}, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L42] 1 unsigned int i=0; VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0] [L42] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0] [L42] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPLEQ,IntegerLiteral[12U],IdentifierExpression[i]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[11U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[10U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[9U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[8U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[7U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[6U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[5U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[4U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[3U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[2U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[1U]]],BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IntegerLiteral[0U],IdentifierExpression[i]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[0U]]]]]] VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0] [L42] COND TRUE 1 i