./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.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/parallel-misc-2-unrolled.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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/parallel-misc-2-unrolled.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-2-unrolled.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-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:09:13,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:09:13,862 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:09:13,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:09:13,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:09:13,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:09:13,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:09:13,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:09:13,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:09:13,900 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:09:13,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:09:13,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:09:13,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:09:13,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:09:13,902 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:09:13,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:09:13,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:09:13,902 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:09:13,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:09:13,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:09:13,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:09:13,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:09:13,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:09:13,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:09:13,904 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:09:13,904 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:09:13,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:09:13,905 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:09:13,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:09:13,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:09:13,906 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:09:13,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:09:13,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:09:13,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:09:13,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:09:13,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:09:13,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:09:13,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:09:13,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:09:13,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:09:13,908 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:09:13,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:09:13,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:09:13,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:09:14,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:09:14,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:09:14,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:09:14,132 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:09:14,132 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:09:14,133 INFO L431 ainManager$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/parallel-misc-2-unrolled.wvr.yml/witness.yml [2024-01-31 16:09:14,272 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:09:14,275 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:09:14,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-01-31 16:09:15,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:09:15,440 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:09:15,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-01-31 16:09:15,446 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fb5a093f/94d241c534f94442ab31ab860eea544b/FLAGeb1aa866a [2024-01-31 16:09:15,457 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fb5a093f/94d241c534f94442ab31ab860eea544b [2024-01-31 16:09:15,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:09:15,459 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:09:15,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:09:15,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:09:15,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:09:15,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:09:14" (1/2) ... [2024-01-31 16:09:15,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b79873 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:09:15, skipping insertion in model container [2024-01-31 16:09:15,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:09:14" (1/2) ... [2024-01-31 16:09:15,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3783b511 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:09:15, skipping insertion in model container [2024-01-31 16:09:15,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:09:15" (2/2) ... [2024-01-31 16:09:15,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b79873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15, skipping insertion in model container [2024-01-31 16:09:15,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:09:15" (2/2) ... [2024-01-31 16:09:15,468 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:09:15,482 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:09:15,483 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,483 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,484 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,484 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,484 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (((pos == 0U) && (i1 == 0U)) && (i2 == 0U)) && (N == 0U) [2024-01-31 16:09:15,484 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] N == 0U [2024-01-31 16:09:15,484 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,484 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,484 INFO L98 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,485 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,485 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,485 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,485 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,485 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,485 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,485 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,486 INFO L98 nessWitnessExtractor]: Loop invariant at [L40-L40] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,486 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] ((i1 == 0U) && (i2 == 0U)) && (N == 0U) [2024-01-31 16:09:15,486 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,486 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] (i2 == 0U) && (N == 0U) [2024-01-31 16:09:15,486 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,486 INFO L98 nessWitnessExtractor]: Loop invariant at [L55-L55] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,486 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,486 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-31 16:09:15,501 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:09:15,681 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/parallel-misc-2-unrolled.wvr.c[2358,2371] [2024-01-31 16:09:15,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:09:15,700 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:09:15,774 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/parallel-misc-2-unrolled.wvr.c[2358,2371] [2024-01-31 16:09:15,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:09:15,788 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:09:15,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15 WrapperNode [2024-01-31 16:09:15,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:09:15,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:09:15,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:09:15,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:09:15,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,830 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-01-31 16:09:15,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:09:15,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:09:15,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:09:15,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:09:15,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,874 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]. [2024-01-31 16:09:15,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:09:15,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:09:15,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:09:15,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:09:15,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (1/1) ... [2024-01-31 16:09:15,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:09:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:09:15,934 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) [2024-01-31 16:09:15,956 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 [2024-01-31 16:09:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:09:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:09:15,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:09:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:09:15,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:09:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:09:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:09:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:09:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:09:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:09:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:09:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:09:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:09:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:09:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:09:15,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:09:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:09:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:09:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:09:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:09:15,981 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:09:16,056 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:09:16,058 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:09:16,301 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:09:16,301 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:09:16,427 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:09:16,427 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-31 16:09:16,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:09:16 BoogieIcfgContainer [2024-01-31 16:09:16,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:09:16,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:09:16,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:09:16,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:09:16,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:09:14" (1/4) ... [2024-01-31 16:09:16,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d37074d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:09:16, skipping insertion in model container [2024-01-31 16:09:16,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:09:15" (2/4) ... [2024-01-31 16:09:16,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d37074d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:09:16, skipping insertion in model container [2024-01-31 16:09:16,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:15" (3/4) ... [2024-01-31 16:09:16,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d37074d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:09:16, skipping insertion in model container [2024-01-31 16:09:16,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:09:16" (4/4) ... [2024-01-31 16:09:16,434 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2024-01-31 16:09:16,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:09:16,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-01-31 16:09:16,448 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:09:16,501 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 16:09:16,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 65 transitions, 144 flow [2024-01-31 16:09:16,567 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2024-01-31 16:09:16,570 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:09:16,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 63 events. 4/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-01-31 16:09:16,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 65 transitions, 144 flow [2024-01-31 16:09:16,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 62 transitions, 136 flow [2024-01-31 16:09:16,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:09:16,596 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;@8701a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:09:16,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-01-31 16:09:16,603 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:09:16,603 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:09:16,603 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:09:16,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:16,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:09:16,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:16,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash 10717, now seen corresponding path program 1 times [2024-01-31 16:09:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:16,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019058459] [2024-01-31 16:09:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:16,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:17,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:17,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019058459] [2024-01-31 16:09:17,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019058459] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:17,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:17,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:09:17,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886788271] [2024-01-31 16:09:17,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:17,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:09:17,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:17,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:09:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:09:17,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 65 [2024-01-31 16:09:17,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:17,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:17,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 65 [2024-01-31 16:09:17,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:17,270 INFO L124 PetriNetUnfolderBase]: 303/769 cut-off events. [2024-01-31 16:09:17,270 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-01-31 16:09:17,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 769 events. 303/769 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4952 event pairs, 229 based on Foata normal form. 72/658 useless extension candidates. Maximal degree in co-relation 1182. Up to 505 conditions per place. [2024-01-31 16:09:17,279 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 30 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-01-31 16:09:17,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 186 flow [2024-01-31 16:09:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:09:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:09:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-01-31 16:09:17,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2024-01-31 16:09:17,291 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 136 flow. Second operand 3 states and 114 transitions. [2024-01-31 16:09:17,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 186 flow [2024-01-31 16:09:17,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:09:17,296 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 118 flow [2024-01-31 16:09:17,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=3, PETRI_FLOW=118, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-01-31 16:09:17,300 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -7 predicate places. [2024-01-31 16:09:17,301 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 118 flow [2024-01-31 16:09:17,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:17,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:17,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:09:17,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:09:17,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:17,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:17,302 INFO L85 PathProgramCache]: Analyzing trace with hash 332541, now seen corresponding path program 1 times [2024-01-31 16:09:17,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:17,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026058771] [2024-01-31 16:09:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:17,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:17,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:17,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026058771] [2024-01-31 16:09:17,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026058771] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:17,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:17,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:09:17,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503604958] [2024-01-31 16:09:17,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:17,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:09:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:09:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:09:17,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2024-01-31 16:09:17,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:17,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:17,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2024-01-31 16:09:17,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:17,473 INFO L124 PetriNetUnfolderBase]: 303/768 cut-off events. [2024-01-31 16:09:17,474 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:09:17,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 768 events. 303/768 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4921 event pairs, 229 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 1278. Up to 503 conditions per place. [2024-01-31 16:09:17,478 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 29 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-01-31 16:09:17,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 178 flow [2024-01-31 16:09:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:09:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:09:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-01-31 16:09:17,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-01-31 16:09:17,480 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 118 flow. Second operand 3 states and 110 transitions. [2024-01-31 16:09:17,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 178 flow [2024-01-31 16:09:17,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:17,482 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 116 flow [2024-01-31 16:09:17,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-01-31 16:09:17,483 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2024-01-31 16:09:17,483 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 116 flow [2024-01-31 16:09:17,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:17,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:17,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:09:17,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:09:17,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:17,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash 10309136, now seen corresponding path program 1 times [2024-01-31 16:09:17,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:17,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372878043] [2024-01-31 16:09:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:17,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:17,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:17,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372878043] [2024-01-31 16:09:17,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372878043] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:17,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:17,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:09:17,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680162404] [2024-01-31 16:09:17,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:17,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:09:17,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:09:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:09:17,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-01-31 16:09:17,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:17,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:17,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-01-31 16:09:17,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:17,689 INFO L124 PetriNetUnfolderBase]: 303/767 cut-off events. [2024-01-31 16:09:17,689 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:09:17,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 767 events. 303/767 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4963 event pairs, 229 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 1274. Up to 501 conditions per place. [2024-01-31 16:09:17,725 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 28 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-01-31 16:09:17,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 174 flow [2024-01-31 16:09:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:09:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:09:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-01-31 16:09:17,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5743589743589743 [2024-01-31 16:09:17,727 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 116 flow. Second operand 3 states and 112 transitions. [2024-01-31 16:09:17,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 174 flow [2024-01-31 16:09:17,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:17,728 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 114 flow [2024-01-31 16:09:17,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-01-31 16:09:17,728 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -9 predicate places. [2024-01-31 16:09:17,729 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 114 flow [2024-01-31 16:09:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:17,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:17,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:09:17,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:09:17,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:17,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:17,729 INFO L85 PathProgramCache]: Analyzing trace with hash 319583589, now seen corresponding path program 1 times [2024-01-31 16:09:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092415652] [2024-01-31 16:09:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:17,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:17,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092415652] [2024-01-31 16:09:17,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092415652] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:17,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:17,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:09:17,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531087943] [2024-01-31 16:09:17,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:17,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:09:17,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:17,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:09:17,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:09:17,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 65 [2024-01-31 16:09:17,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:17,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:17,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 65 [2024-01-31 16:09:17,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:17,850 INFO L124 PetriNetUnfolderBase]: 303/766 cut-off events. [2024-01-31 16:09:17,851 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:09:17,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 766 events. 303/766 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4954 event pairs, 229 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 1270. Up to 499 conditions per place. [2024-01-31 16:09:17,854 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 27 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-01-31 16:09:17,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 170 flow [2024-01-31 16:09:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:09:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:09:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-01-31 16:09:17,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2024-01-31 16:09:17,856 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 114 flow. Second operand 3 states and 114 transitions. [2024-01-31 16:09:17,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 170 flow [2024-01-31 16:09:17,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:17,858 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 112 flow [2024-01-31 16:09:17,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-01-31 16:09:17,859 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -10 predicate places. [2024-01-31 16:09:17,859 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 112 flow [2024-01-31 16:09:17,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:17,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:17,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:17,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:09:17,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:17,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:17,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1227378718, now seen corresponding path program 1 times [2024-01-31 16:09:17,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:17,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319479892] [2024-01-31 16:09:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:17,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:17,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:17,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319479892] [2024-01-31 16:09:17,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319479892] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:17,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:17,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:09:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912751208] [2024-01-31 16:09:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:17,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:09:17,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:09:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:09:17,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 65 [2024-01-31 16:09:17,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:17,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:17,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 65 [2024-01-31 16:09:17,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:18,043 INFO L124 PetriNetUnfolderBase]: 197/470 cut-off events. [2024-01-31 16:09:18,043 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:09:18,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 470 events. 197/470 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2543 event pairs, 10 based on Foata normal form. 53/435 useless extension candidates. Maximal degree in co-relation 794. Up to 295 conditions per place. [2024-01-31 16:09:18,046 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 34 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-01-31 16:09:18,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 189 flow [2024-01-31 16:09:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:09:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:09:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-01-31 16:09:18,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-01-31 16:09:18,047 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 112 flow. Second operand 4 states and 140 transitions. [2024-01-31 16:09:18,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 189 flow [2024-01-31 16:09:18,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:18,049 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 96 flow [2024-01-31 16:09:18,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-01-31 16:09:18,049 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -17 predicate places. [2024-01-31 16:09:18,050 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 96 flow [2024-01-31 16:09:18,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:18,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:09:18,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:18,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1604012118, now seen corresponding path program 1 times [2024-01-31 16:09:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:18,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237228692] [2024-01-31 16:09:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:18,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:18,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:18,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237228692] [2024-01-31 16:09:18,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237228692] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:18,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:18,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:09:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117970107] [2024-01-31 16:09:18,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:18,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:09:18,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:18,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:09:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:09:18,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 65 [2024-01-31 16:09:18,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:18,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 65 [2024-01-31 16:09:18,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:18,200 INFO L124 PetriNetUnfolderBase]: 145/339 cut-off events. [2024-01-31 16:09:18,200 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-31 16:09:18,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 339 events. 145/339 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1654 event pairs, 9 based on Foata normal form. 42/358 useless extension candidates. Maximal degree in co-relation 579. Up to 196 conditions per place. [2024-01-31 16:09:18,202 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 35 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-01-31 16:09:18,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 181 flow [2024-01-31 16:09:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:09:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:09:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-01-31 16:09:18,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423076923076923 [2024-01-31 16:09:18,203 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 96 flow. Second operand 4 states and 141 transitions. [2024-01-31 16:09:18,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 181 flow [2024-01-31 16:09:18,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:18,205 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 81 flow [2024-01-31 16:09:18,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-01-31 16:09:18,205 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -24 predicate places. [2024-01-31 16:09:18,206 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 81 flow [2024-01-31 16:09:18,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:18,206 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] [2024-01-31 16:09:18,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:09:18,206 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:18,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:18,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1361105669, now seen corresponding path program 1 times [2024-01-31 16:09:18,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:18,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450604146] [2024-01-31 16:09:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:18,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:18,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:18,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450604146] [2024-01-31 16:09:18,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450604146] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:18,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:18,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:09:18,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879522061] [2024-01-31 16:09:18,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:18,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:09:18,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:18,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:09:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:09:18,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 65 [2024-01-31 16:09:18,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:18,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 65 [2024-01-31 16:09:18,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:18,355 INFO L124 PetriNetUnfolderBase]: 170/426 cut-off events. [2024-01-31 16:09:18,356 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-01-31 16:09:18,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 426 events. 170/426 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2194 event pairs, 33 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 715. Up to 259 conditions per place. [2024-01-31 16:09:18,358 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 27 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-01-31 16:09:18,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 172 flow [2024-01-31 16:09:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:09:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:09:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-01-31 16:09:18,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6512820512820513 [2024-01-31 16:09:18,359 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 81 flow. Second operand 3 states and 127 transitions. [2024-01-31 16:09:18,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 172 flow [2024-01-31 16:09:18,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:18,360 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 103 flow [2024-01-31 16:09:18,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-01-31 16:09:18,361 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -23 predicate places. [2024-01-31 16:09:18,361 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 103 flow [2024-01-31 16:09:18,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:18,362 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:18,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:09:18,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:18,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1993486459, now seen corresponding path program 1 times [2024-01-31 16:09:18,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:18,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116305315] [2024-01-31 16:09:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:18,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:18,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116305315] [2024-01-31 16:09:18,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116305315] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:18,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:18,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:09:18,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682201015] [2024-01-31 16:09:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:18,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:09:18,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:18,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:09:18,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:09:18,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-01-31 16:09:18,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:18,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-01-31 16:09:18,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:18,574 INFO L124 PetriNetUnfolderBase]: 347/676 cut-off events. [2024-01-31 16:09:18,574 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-01-31 16:09:18,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 676 events. 347/676 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3411 event pairs, 38 based on Foata normal form. 0/579 useless extension candidates. Maximal degree in co-relation 1352. Up to 284 conditions per place. [2024-01-31 16:09:18,577 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 52 selfloop transitions, 11 changer transitions 3/75 dead transitions. [2024-01-31 16:09:18,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 328 flow [2024-01-31 16:09:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:09:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:09:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-01-31 16:09:18,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6123076923076923 [2024-01-31 16:09:18,579 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 103 flow. Second operand 5 states and 199 transitions. [2024-01-31 16:09:18,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 328 flow [2024-01-31 16:09:18,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:09:18,581 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 163 flow [2024-01-31 16:09:18,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-01-31 16:09:18,582 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -17 predicate places. [2024-01-31 16:09:18,582 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 163 flow [2024-01-31 16:09:18,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:18,583 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:18,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:09:18,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:18,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:18,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2014128779, now seen corresponding path program 2 times [2024-01-31 16:09:18,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:18,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084960200] [2024-01-31 16:09:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:18,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:18,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:18,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084960200] [2024-01-31 16:09:18,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084960200] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:18,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:18,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:09:18,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991658540] [2024-01-31 16:09:18,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:18,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:09:18,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:18,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:09:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:09:18,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-01-31 16:09:18,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:18,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-01-31 16:09:18,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:18,798 INFO L124 PetriNetUnfolderBase]: 327/668 cut-off events. [2024-01-31 16:09:18,798 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2024-01-31 16:09:18,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 668 events. 327/668 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3323 event pairs, 32 based on Foata normal form. 20/678 useless extension candidates. Maximal degree in co-relation 1589. Up to 252 conditions per place. [2024-01-31 16:09:18,801 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 53 selfloop transitions, 14 changer transitions 4/80 dead transitions. [2024-01-31 16:09:18,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 419 flow [2024-01-31 16:09:18,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:09:18,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:09:18,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-01-31 16:09:18,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-01-31 16:09:18,803 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 163 flow. Second operand 5 states and 200 transitions. [2024-01-31 16:09:18,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 419 flow [2024-01-31 16:09:18,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 80 transitions, 419 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:09:18,805 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 257 flow [2024-01-31 16:09:18,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-01-31 16:09:18,806 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -9 predicate places. [2024-01-31 16:09:18,806 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 257 flow [2024-01-31 16:09:18,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:18,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:09:18,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:18,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1993502701, now seen corresponding path program 1 times [2024-01-31 16:09:18,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:18,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195867605] [2024-01-31 16:09:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:18,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:18,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:18,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195867605] [2024-01-31 16:09:18,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195867605] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:18,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:18,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:09:18,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158657585] [2024-01-31 16:09:18,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:18,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:09:18,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:18,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:09:18,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:09:18,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-01-31 16:09:18,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:18,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:18,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-01-31 16:09:18,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:19,058 INFO L124 PetriNetUnfolderBase]: 333/674 cut-off events. [2024-01-31 16:09:19,059 INFO L125 PetriNetUnfolderBase]: For 1224/1227 co-relation queries the response was YES. [2024-01-31 16:09:19,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 674 events. 333/674 cut-off events. For 1224/1227 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3429 event pairs, 44 based on Foata normal form. 8/671 useless extension candidates. Maximal degree in co-relation 1932. Up to 366 conditions per place. [2024-01-31 16:09:19,063 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 57 selfloop transitions, 10 changer transitions 4/80 dead transitions. [2024-01-31 16:09:19,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 511 flow [2024-01-31 16:09:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:09:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:09:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 196 transitions. [2024-01-31 16:09:19,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6030769230769231 [2024-01-31 16:09:19,065 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 257 flow. Second operand 5 states and 196 transitions. [2024-01-31 16:09:19,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 511 flow [2024-01-31 16:09:19,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 507 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:09:19,071 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 312 flow [2024-01-31 16:09:19,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-01-31 16:09:19,072 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-01-31 16:09:19,072 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 312 flow [2024-01-31 16:09:19,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:19,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:19,073 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:19,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:09:19,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:19,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:19,074 INFO L85 PathProgramCache]: Analyzing trace with hash 471330807, now seen corresponding path program 2 times [2024-01-31 16:09:19,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:19,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470060695] [2024-01-31 16:09:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:19,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:19,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470060695] [2024-01-31 16:09:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470060695] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:19,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:19,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:09:19,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330919759] [2024-01-31 16:09:19,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:19,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:09:19,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:19,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:09:19,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:09:19,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-01-31 16:09:19,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:19,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:19,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-01-31 16:09:19,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:19,278 INFO L124 PetriNetUnfolderBase]: 299/633 cut-off events. [2024-01-31 16:09:19,278 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2024-01-31 16:09:19,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 633 events. 299/633 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2894 event pairs, 68 based on Foata normal form. 18/646 useless extension candidates. Maximal degree in co-relation 1867. Up to 321 conditions per place. [2024-01-31 16:09:19,282 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 54 selfloop transitions, 14 changer transitions 4/81 dead transitions. [2024-01-31 16:09:19,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 81 transitions, 574 flow [2024-01-31 16:09:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:09:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:09:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-01-31 16:09:19,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5969230769230769 [2024-01-31 16:09:19,283 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 312 flow. Second operand 5 states and 194 transitions. [2024-01-31 16:09:19,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 81 transitions, 574 flow [2024-01-31 16:09:19,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 566 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:09:19,287 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 389 flow [2024-01-31 16:09:19,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-01-31 16:09:19,288 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2024-01-31 16:09:19,288 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 389 flow [2024-01-31 16:09:19,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:19,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:19,288 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:19,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:09:19,289 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-01-31 16:09:19,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1562210815, now seen corresponding path program 1 times [2024-01-31 16:09:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28139711] [2024-01-31 16:09:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:19,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:09:19,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28139711] [2024-01-31 16:09:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28139711] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:09:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84731980] [2024-01-31 16:09:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:19,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:09:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:09:19,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:09:19,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:09:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:19,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 16:09:19,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:09:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:09:19,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:09:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:09:19,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84731980] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:09:19,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:09:19,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-01-31 16:09:19,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006660636] [2024-01-31 16:09:19,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:09:19,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:09:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:19,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:09:19,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:09:19,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 65 [2024-01-31 16:09:19,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:19,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:19,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 65 [2024-01-31 16:09:19,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:19,981 INFO L124 PetriNetUnfolderBase]: 208/482 cut-off events. [2024-01-31 16:09:19,981 INFO L125 PetriNetUnfolderBase]: For 1253/1276 co-relation queries the response was YES. [2024-01-31 16:09:19,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 482 events. 208/482 cut-off events. For 1253/1276 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2171 event pairs, 44 based on Foata normal form. 3/455 useless extension candidates. Maximal degree in co-relation 1489. Up to 117 conditions per place. [2024-01-31 16:09:19,983 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2024-01-31 16:09:19,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 569 flow [2024-01-31 16:09:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:09:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:09:19,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-01-31 16:09:19,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794871794871795 [2024-01-31 16:09:19,985 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 389 flow. Second operand 6 states and 226 transitions. [2024-01-31 16:09:19,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 569 flow [2024-01-31 16:09:19,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 554 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-01-31 16:09:19,989 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2024-01-31 16:09:19,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2024-01-31 16:09:19,991 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2024-01-31 16:09:19,991 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2024-01-31 16:09:19,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:19,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 47 remaining) [2024-01-31 16:09:19,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 47 remaining) [2024-01-31 16:09:19,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 47 remaining) [2024-01-31 16:09:19,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 47 remaining) [2024-01-31 16:09:19,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 47 remaining) [2024-01-31 16:09:19,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 47 remaining) [2024-01-31 16:09:19,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 47 remaining) [2024-01-31 16:09:19,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 47 remaining) [2024-01-31 16:09:19,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 47 remaining) [2024-01-31 16:09:19,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 47 remaining) [2024-01-31 16:09:19,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 47 remaining) [2024-01-31 16:09:19,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 47 remaining) [2024-01-31 16:09:19,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 47 remaining) [2024-01-31 16:09:19,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 47 remaining) [2024-01-31 16:09:19,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 47 remaining) [2024-01-31 16:09:19,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 47 remaining) [2024-01-31 16:09:19,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 47 remaining) [2024-01-31 16:09:19,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 47 remaining) [2024-01-31 16:09:19,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 47 remaining) [2024-01-31 16:09:19,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 47 remaining) [2024-01-31 16:09:19,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 47 remaining) [2024-01-31 16:09:19,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 47 remaining) [2024-01-31 16:09:19,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 47 remaining) [2024-01-31 16:09:19,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 47 remaining) [2024-01-31 16:09:19,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (22 of 47 remaining) [2024-01-31 16:09:19,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 47 remaining) [2024-01-31 16:09:19,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 47 remaining) [2024-01-31 16:09:19,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 47 remaining) [2024-01-31 16:09:19,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 47 remaining) [2024-01-31 16:09:19,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 47 remaining) [2024-01-31 16:09:19,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 47 remaining) [2024-01-31 16:09:19,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 47 remaining) [2024-01-31 16:09:19,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 47 remaining) [2024-01-31 16:09:19,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 47 remaining) [2024-01-31 16:09:19,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 47 remaining) [2024-01-31 16:09:19,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 47 remaining) [2024-01-31 16:09:19,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 47 remaining) [2024-01-31 16:09:19,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 47 remaining) [2024-01-31 16:09:19,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 47 remaining) [2024-01-31 16:09:19,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 47 remaining) [2024-01-31 16:09:20,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 47 remaining) [2024-01-31 16:09:20,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 47 remaining) [2024-01-31 16:09:20,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 47 remaining) [2024-01-31 16:09:20,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 47 remaining) [2024-01-31 16:09:20,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 47 remaining) [2024-01-31 16:09:20,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 47 remaining) [2024-01-31 16:09:20,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 47 remaining) [2024-01-31 16:09:20,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 16:09:20,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-01-31 16:09:20,213 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:20,218 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:09:20,218 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:09:20,224 INFO L503 ceAbstractionStarter]: Automizer considered 24 witness invariants [2024-01-31 16:09:20,224 INFO L504 ceAbstractionStarter]: WitnessConsidered=24 [2024-01-31 16:09:20,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:09:20 BasicIcfg [2024-01-31 16:09:20,226 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:09:20,226 INFO L158 Benchmark]: Toolchain (without parser) took 4767.32ms. Allocated memory was 176.2MB in the beginning and 335.5MB in the end (delta: 159.4MB). Free memory was 100.0MB in the beginning and 231.9MB in the end (delta: -131.9MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2024-01-31 16:09:20,226 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 176.2MB. Free memory was 128.9MB in the beginning and 128.8MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:09:20,226 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:09:20,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.14ms. Allocated memory was 176.2MB in the beginning and 257.9MB in the end (delta: 81.8MB). Free memory was 99.7MB in the beginning and 225.8MB in the end (delta: -126.1MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2024-01-31 16:09:20,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.37ms. Allocated memory is still 257.9MB. Free memory was 225.8MB in the beginning and 223.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:09:20,227 INFO L158 Benchmark]: Boogie Preprocessor took 63.18ms. Allocated memory is still 257.9MB. Free memory was 223.7MB in the beginning and 221.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:09:20,227 INFO L158 Benchmark]: RCFGBuilder took 532.65ms. Allocated memory is still 257.9MB. Free memory was 221.6MB in the beginning and 189.1MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-01-31 16:09:20,228 INFO L158 Benchmark]: TraceAbstraction took 3796.68ms. Allocated memory was 257.9MB in the beginning and 335.5MB in the end (delta: 77.6MB). Free memory was 188.0MB in the beginning and 231.9MB in the end (delta: -43.8MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2024-01-31 16:09:20,229 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 176.2MB. Free memory was 128.9MB in the beginning and 128.8MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.14ms. Allocated memory was 176.2MB in the beginning and 257.9MB in the end (delta: 81.8MB). Free memory was 99.7MB in the beginning and 225.8MB in the end (delta: -126.1MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.37ms. Allocated memory is still 257.9MB. Free memory was 225.8MB in the beginning and 223.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.18ms. Allocated memory is still 257.9MB. Free memory was 223.7MB in the beginning and 221.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 532.65ms. Allocated memory is still 257.9MB. Free memory was 221.6MB in the beginning and 189.1MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3796.68ms. Allocated memory was 257.9MB in the beginning and 335.5MB in the end (delta: 77.6MB). Free memory was 188.0MB in the beginning and 231.9MB in the end (delta: -43.8MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 40]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 51]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 41]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 42]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 43]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 44]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 45]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 46]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 47]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 48]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 55]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 66]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 56]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 57]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 58]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 59]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 60]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 61]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 62]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 63]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 73]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 74]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 75]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 76]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 87]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 106 locations, 47 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 431 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1026 IncrementalHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 31 mSDtfsCounter, 1026 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=11, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 1978 SizeOfPredicates, 6 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 11/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:09:20,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE