./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.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/chl-simpl-str-trans.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/chl-simpl-str-trans.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-simpl-str-trans.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 16:08:30,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:08:30,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:08:30,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:08:30,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:08:30,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:08:30,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:08:30,700 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:08:30,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:08:30,703 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:08:30,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:08:30,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:08:30,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:08:30,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:08:30,706 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:08:30,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:08:30,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:08:30,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:08:30,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:08:30,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:08:30,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:08:30,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:08:30,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:08:30,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:08:30,708 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:08:30,708 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:08:30,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:08:30,709 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:08:30,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:08:30,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:08:30,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:08:30,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:08:30,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:08:30,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:08:30,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:08:30,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:08:30,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:08:30,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:08:30,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:08:30,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:08:30,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:08:30,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:08:30,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:08:30,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:08:30,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:08:30,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:08:30,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:08:30,928 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:08:30,929 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:08:30,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2024-01-31 16:08:31,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:08:32,077 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:08:32,077 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2024-01-31 16:08:32,083 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d48942ef0/4a7e8887314f48e18bbabd6799b1e0e1/FLAG888b7c76d [2024-01-31 16:08:32,092 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d48942ef0/4a7e8887314f48e18bbabd6799b1e0e1 [2024-01-31 16:08:32,095 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:08:32,095 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:08:32,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-simpl-str-trans.wvr.yml/witness.yml [2024-01-31 16:08:32,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:08:32,195 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:08:32,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:08:32,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:08:32,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:08:32,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:08:32" (1/2) ... [2024-01-31 16:08:32,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e89fe19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:08:32, skipping insertion in model container [2024-01-31 16:08:32,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:08:32" (1/2) ... [2024-01-31 16:08:32,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12cf959b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:08:32, skipping insertion in model container [2024-01-31 16:08:32,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:08:32" (2/2) ... [2024-01-31 16:08:32,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e89fe19 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32, skipping insertion in model container [2024-01-31 16:08:32,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:08:32" (2/2) ... [2024-01-31 16:08:32,204 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:08:32,234 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:08:32,235 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-31 16:08:32,235 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] ((result_6 == 0) && (result_7 == 0)) && (result_8 == 0) [2024-01-31 16:08:32,235 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-31 16:08:32,235 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] (1 <= b) && (b != 0) [2024-01-31 16:08:32,235 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] ((((((((length_0 == 0) && (to_int_1 == 0)) && (length_2 == 0)) && (to_int_3 == 0)) && (length_4 == 0)) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-31 16:08:32,235 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] ((((length_4 == 0) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-31 16:08:32,236 INFO L98 nessWitnessExtractor]: Location invariant before [L87-L87] (b <= -1) && (b != 0) [2024-01-31 16:08:32,236 INFO L98 nessWitnessExtractor]: Location invariant before [L65-L65] (((((((to_int_1 == 0) && (length_2 == 0)) && (to_int_3 == 0)) && (length_4 == 0)) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-31 16:08:32,236 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] (((((to_int_3 == 0) && (length_4 == 0)) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-31 16:08:32,236 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] (((to_int_5 == 0) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-31 16:08:32,236 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-31 16:08:32,236 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] ((((((length_2 == 0) && (to_int_3 == 0)) && (length_4 == 0)) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-31 16:08:32,253 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:08:32,396 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/chl-simpl-str-trans.wvr.c[2553,2566] [2024-01-31 16:08:32,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:08:32,408 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 [2024-01-31 16:08:32,452 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/chl-simpl-str-trans.wvr.c[2553,2566] Start Parsing Local Start Parsing Local [2024-01-31 16:08:32,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:08:32,470 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:08:32,471 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32 WrapperNode [2024-01-31 16:08:32,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:08:32,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:08:32,472 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:08:32,472 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:08:32,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,501 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 187 [2024-01-31 16:08:32,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:08:32,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:08:32,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:08:32,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:08:32,511 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,513 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,523 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 16:08:32,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:08:32,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:08:32,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:08:32,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:08:32,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (1/1) ... [2024-01-31 16:08:32,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:08:32,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:08:32,575 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 16:08:32,596 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 16:08:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:08:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:08:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:08:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:08:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:08:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:08:32,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:08:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:08:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:08:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:08:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:08:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:08:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:08:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:08:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:08:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:08:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:08:32,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:08:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:08:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:08:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:08:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:08:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:08:32,614 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 16:08:32,718 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:08:32,720 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:08:33,027 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:08:33,028 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:08:33,168 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:08:33,168 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:08:33,169 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:08:33 BoogieIcfgContainer [2024-01-31 16:08:33,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:08:33,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:08:33,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:08:33,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:08:33,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:08:32" (1/4) ... [2024-01-31 16:08:33,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b718294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:08:33, skipping insertion in model container [2024-01-31 16:08:33,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:08:32" (2/4) ... [2024-01-31 16:08:33,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b718294 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:08:33, skipping insertion in model container [2024-01-31 16:08:33,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:08:32" (3/4) ... [2024-01-31 16:08:33,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b718294 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:08:33, skipping insertion in model container [2024-01-31 16:08:33,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:08:33" (4/4) ... [2024-01-31 16:08:33,174 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2024-01-31 16:08:33,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:08:33,188 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-01-31 16:08:33,188 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:08:33,261 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:08:33,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 71 transitions, 163 flow [2024-01-31 16:08:33,320 INFO L124 PetriNetUnfolderBase]: 6/68 cut-off events. [2024-01-31 16:08:33,320 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:08:33,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 68 events. 6/68 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 161 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-01-31 16:08:33,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 71 transitions, 163 flow [2024-01-31 16:08:33,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 152 flow [2024-01-31 16:08:33,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:08:33,342 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;@121fcec2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:08:33,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-01-31 16:08:33,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:08:33,345 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:08:33,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:08:33,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:33,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:08:33,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:08:33,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:33,350 INFO L85 PathProgramCache]: Analyzing trace with hash 17270, now seen corresponding path program 1 times [2024-01-31 16:08:33,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:33,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787427644] [2024-01-31 16:08:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:33,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:33,666 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 16:08:33,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:33,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787427644] [2024-01-31 16:08:33,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787427644] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:33,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:33,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:08:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920744987] [2024-01-31 16:08:33,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:33,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:33,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:33,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 71 [2024-01-31 16:08:33,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 16:08:33,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:33,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 71 [2024-01-31 16:08:33,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:34,270 INFO L124 PetriNetUnfolderBase]: 3281/5193 cut-off events. [2024-01-31 16:08:34,270 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-01-31 16:08:34,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9850 conditions, 5193 events. 3281/5193 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 32308 event pairs, 2653 based on Foata normal form. 0/4258 useless extension candidates. Maximal degree in co-relation 8903. Up to 4433 conditions per place. [2024-01-31 16:08:34,305 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 48 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-01-31 16:08:34,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 250 flow [2024-01-31 16:08:34,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-01-31 16:08:34,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070422535211268 [2024-01-31 16:08:34,318 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 152 flow. Second operand 3 states and 108 transitions. [2024-01-31 16:08:34,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 250 flow [2024-01-31 16:08:34,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 238 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:08:34,333 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 142 flow [2024-01-31 16:08:34,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-01-31 16:08:34,337 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2024-01-31 16:08:34,338 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 142 flow [2024-01-31 16:08:34,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 16:08:34,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:34,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:08:34,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:08:34,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:08:34,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash 535947, now seen corresponding path program 1 times [2024-01-31 16:08:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916671259] [2024-01-31 16:08:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:34,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:34,439 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 16:08:34,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916671259] [2024-01-31 16:08:34,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916671259] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:34,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:34,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:08:34,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277772765] [2024-01-31 16:08:34,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:34,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:34,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:34,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:34,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:34,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 71 [2024-01-31 16:08:34,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 16:08:34,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:34,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 71 [2024-01-31 16:08:34,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:34,742 INFO L124 PetriNetUnfolderBase]: 2495/4005 cut-off events. [2024-01-31 16:08:34,743 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-01-31 16:08:34,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 4005 events. 2495/4005 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 25862 event pairs, 2051 based on Foata normal form. 0/3391 useless extension candidates. Maximal degree in co-relation 7553. Up to 3487 conditions per place. [2024-01-31 16:08:34,764 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 45 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-01-31 16:08:34,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 234 flow [2024-01-31 16:08:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:34,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-01-31 16:08:34,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352112676056338 [2024-01-31 16:08:34,771 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 142 flow. Second operand 3 states and 114 transitions. [2024-01-31 16:08:34,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 234 flow [2024-01-31 16:08:34,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:08:34,774 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 140 flow [2024-01-31 16:08:34,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-01-31 16:08:34,775 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2024-01-31 16:08:34,775 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 140 flow [2024-01-31 16:08:34,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 16:08:34,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:34,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:08:34,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:08:34,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:08:34,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash 16614900, now seen corresponding path program 1 times [2024-01-31 16:08:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:34,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847716073] [2024-01-31 16:08:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:34,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:34,851 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 16:08:34,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847716073] [2024-01-31 16:08:34,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847716073] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:34,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:34,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:08:34,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025601645] [2024-01-31 16:08:34,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:34,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:34,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:34,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:34,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:34,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 71 [2024-01-31 16:08:34,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:34,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:34,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 71 [2024-01-31 16:08:34,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:35,185 INFO L124 PetriNetUnfolderBase]: 2495/4004 cut-off events. [2024-01-31 16:08:35,185 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-01-31 16:08:35,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7560 conditions, 4004 events. 2495/4004 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 25946 event pairs, 2051 based on Foata normal form. 0/3391 useless extension candidates. Maximal degree in co-relation 7549. Up to 3485 conditions per place. [2024-01-31 16:08:35,206 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 44 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-01-31 16:08:35,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 230 flow [2024-01-31 16:08:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-01-31 16:08:35,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446009389671361 [2024-01-31 16:08:35,208 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 140 flow. Second operand 3 states and 116 transitions. [2024-01-31 16:08:35,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 230 flow [2024-01-31 16:08:35,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:08:35,209 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 138 flow [2024-01-31 16:08:35,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-01-31 16:08:35,210 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2024-01-31 16:08:35,210 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 138 flow [2024-01-31 16:08:35,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:35,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:35,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:08:35,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:08:35,211 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:08:35,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:35,211 INFO L85 PathProgramCache]: Analyzing trace with hash 515062455, now seen corresponding path program 1 times [2024-01-31 16:08:35,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:35,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096769806] [2024-01-31 16:08:35,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:35,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:35,254 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 16:08:35,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:35,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096769806] [2024-01-31 16:08:35,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096769806] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:35,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:35,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:08:35,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290334745] [2024-01-31 16:08:35,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:35,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:35,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:35,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:35,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2024-01-31 16:08:35,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:35,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:35,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2024-01-31 16:08:35,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:35,502 INFO L124 PetriNetUnfolderBase]: 2161/3504 cut-off events. [2024-01-31 16:08:35,502 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-31 16:08:35,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 3504 events. 2161/3504 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 23145 event pairs, 1782 based on Foata normal form. 0/3065 useless extension candidates. Maximal degree in co-relation 6612. Up to 3056 conditions per place. [2024-01-31 16:08:35,523 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 42 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-01-31 16:08:35,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 224 flow [2024-01-31 16:08:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-31 16:08:35,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633802816901409 [2024-01-31 16:08:35,526 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 138 flow. Second operand 3 states and 120 transitions. [2024-01-31 16:08:35,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 224 flow [2024-01-31 16:08:35,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:08:35,529 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 136 flow [2024-01-31 16:08:35,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-01-31 16:08:35,530 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -8 predicate places. [2024-01-31 16:08:35,530 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 136 flow [2024-01-31 16:08:35,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:35,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:35,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:08:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:08:35,531 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:08:35,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1212932516, now seen corresponding path program 1 times [2024-01-31 16:08:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418837782] [2024-01-31 16:08:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:35,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:35,586 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 16:08:35,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:35,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418837782] [2024-01-31 16:08:35,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418837782] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:35,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:35,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:08:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100086804] [2024-01-31 16:08:35,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:35,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:35,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:35,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:35,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:35,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71 [2024-01-31 16:08:35,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 16:08:35,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:35,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71 [2024-01-31 16:08:35,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:35,814 INFO L124 PetriNetUnfolderBase]: 2161/3503 cut-off events. [2024-01-31 16:08:35,814 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-31 16:08:35,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6623 conditions, 3503 events. 2161/3503 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 23125 event pairs, 1782 based on Foata normal form. 0/3065 useless extension candidates. Maximal degree in co-relation 6608. Up to 3054 conditions per place. [2024-01-31 16:08:35,829 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 41 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-01-31 16:08:35,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 220 flow [2024-01-31 16:08:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:35,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-01-31 16:08:35,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727699530516432 [2024-01-31 16:08:35,831 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 136 flow. Second operand 3 states and 122 transitions. [2024-01-31 16:08:35,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 220 flow [2024-01-31 16:08:35,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:08:35,832 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2024-01-31 16:08:35,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-01-31 16:08:35,832 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -9 predicate places. [2024-01-31 16:08:35,833 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2024-01-31 16:08:35,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 16:08:35,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:35,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:35,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:08:35,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:08:35,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:35,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1053798192, now seen corresponding path program 1 times [2024-01-31 16:08:35,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:35,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723206852] [2024-01-31 16:08:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:35,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:35,861 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 16:08:35,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:35,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723206852] [2024-01-31 16:08:35,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723206852] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:35,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:35,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:08:35,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968259380] [2024-01-31 16:08:35,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:35,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:35,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:35,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:35,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:35,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 71 [2024-01-31 16:08:35,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 16:08:35,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:35,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 71 [2024-01-31 16:08:35,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:36,065 INFO L124 PetriNetUnfolderBase]: 2161/3502 cut-off events. [2024-01-31 16:08:36,066 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-31 16:08:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6621 conditions, 3502 events. 2161/3502 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 23074 event pairs, 1782 based on Foata normal form. 0/3065 useless extension candidates. Maximal degree in co-relation 6604. Up to 3052 conditions per place. [2024-01-31 16:08:36,080 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 40 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-01-31 16:08:36,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 216 flow [2024-01-31 16:08:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:36,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-01-31 16:08:36,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821596244131455 [2024-01-31 16:08:36,082 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 3 states and 124 transitions. [2024-01-31 16:08:36,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 216 flow [2024-01-31 16:08:36,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:08:36,083 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 132 flow [2024-01-31 16:08:36,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-01-31 16:08:36,084 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2024-01-31 16:08:36,084 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 132 flow [2024-01-31 16:08:36,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 16:08:36,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:36,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:36,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:08:36,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:08:36,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:36,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1691993841, now seen corresponding path program 1 times [2024-01-31 16:08:36,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:36,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826621003] [2024-01-31 16:08:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:36,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:36,109 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 16:08:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:36,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826621003] [2024-01-31 16:08:36,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826621003] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:36,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:36,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:08:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769745412] [2024-01-31 16:08:36,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:36,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:36,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 71 [2024-01-31 16:08:36,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:36,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:36,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 71 [2024-01-31 16:08:36,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:36,376 INFO L124 PetriNetUnfolderBase]: 2157/3518 cut-off events. [2024-01-31 16:08:36,376 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-31 16:08:36,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6636 conditions, 3518 events. 2157/3518 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 23701 event pairs, 712 based on Foata normal form. 0/3101 useless extension candidates. Maximal degree in co-relation 6617. Up to 2003 conditions per place. [2024-01-31 16:08:36,392 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 60 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-01-31 16:08:36,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 306 flow [2024-01-31 16:08:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-01-31 16:08:36,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6995305164319249 [2024-01-31 16:08:36,394 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 132 flow. Second operand 3 states and 149 transitions. [2024-01-31 16:08:36,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 306 flow [2024-01-31 16:08:36,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:08:36,396 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 150 flow [2024-01-31 16:08:36,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-01-31 16:08:36,396 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2024-01-31 16:08:36,397 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 150 flow [2024-01-31 16:08:36,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:36,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:36,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:36,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:08:36,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:08:36,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:36,398 INFO L85 PathProgramCache]: Analyzing trace with hash -305575867, now seen corresponding path program 1 times [2024-01-31 16:08:36,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:36,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206882877] [2024-01-31 16:08:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:36,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:08:36,411 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:08:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:08:36,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:08:36,432 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:08:36,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 29 remaining) [2024-01-31 16:08:36,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 29 remaining) [2024-01-31 16:08:36,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 29 remaining) [2024-01-31 16:08:36,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 29 remaining) [2024-01-31 16:08:36,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 29 remaining) [2024-01-31 16:08:36,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 29 remaining) [2024-01-31 16:08:36,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 29 remaining) [2024-01-31 16:08:36,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 29 remaining) [2024-01-31 16:08:36,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 29 remaining) [2024-01-31 16:08:36,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 29 remaining) [2024-01-31 16:08:36,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 29 remaining) [2024-01-31 16:08:36,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 29 remaining) [2024-01-31 16:08:36,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 29 remaining) [2024-01-31 16:08:36,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 29 remaining) [2024-01-31 16:08:36,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 29 remaining) [2024-01-31 16:08:36,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 29 remaining) [2024-01-31 16:08:36,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 29 remaining) [2024-01-31 16:08:36,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (11 of 29 remaining) [2024-01-31 16:08:36,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 29 remaining) [2024-01-31 16:08:36,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 29 remaining) [2024-01-31 16:08:36,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 29 remaining) [2024-01-31 16:08:36,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 29 remaining) [2024-01-31 16:08:36,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 29 remaining) [2024-01-31 16:08:36,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 29 remaining) [2024-01-31 16:08:36,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 29 remaining) [2024-01-31 16:08:36,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 29 remaining) [2024-01-31 16:08:36,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 29 remaining) [2024-01-31 16:08:36,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 29 remaining) [2024-01-31 16:08:36,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 29 remaining) [2024-01-31 16:08:36,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:08:36,439 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:36,444 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:08:36,444 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:08:36,463 INFO L503 ceAbstractionStarter]: Automizer considered 16 witness invariants [2024-01-31 16:08:36,464 INFO L504 ceAbstractionStarter]: WitnessConsidered=16 [2024-01-31 16:08:36,464 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:08:36 BasicIcfg [2024-01-31 16:08:36,464 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:08:36,465 INFO L158 Benchmark]: Toolchain (without parser) took 4269.88ms. Allocated memory was 169.9MB in the beginning and 595.6MB in the end (delta: 425.7MB). Free memory was 97.9MB in the beginning and 331.7MB in the end (delta: -233.8MB). Peak memory consumption was 192.5MB. Max. memory is 16.1GB. [2024-01-31 16:08:36,465 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 78.9MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:08:36,465 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:08:36,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.84ms. Allocated memory is still 169.9MB. Free memory was 97.9MB in the beginning and 82.1MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-01-31 16:08:36,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.47ms. Allocated memory is still 169.9MB. Free memory was 82.1MB in the beginning and 79.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:08:36,466 INFO L158 Benchmark]: Boogie Preprocessor took 44.64ms. Allocated memory is still 169.9MB. Free memory was 79.7MB in the beginning and 77.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:08:36,466 INFO L158 Benchmark]: RCFGBuilder took 621.89ms. Allocated memory is still 169.9MB. Free memory was 77.0MB in the beginning and 103.8MB in the end (delta: -26.8MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2024-01-31 16:08:36,466 INFO L158 Benchmark]: TraceAbstraction took 3294.40ms. Allocated memory was 169.9MB in the beginning and 595.6MB in the end (delta: 425.7MB). Free memory was 103.8MB in the beginning and 331.7MB in the end (delta: -227.9MB). Peak memory consumption was 197.4MB. Max. memory is 16.1GB. [2024-01-31 16:08:36,468 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 78.9MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.84ms. Allocated memory is still 169.9MB. Free memory was 97.9MB in the beginning and 82.1MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.47ms. Allocated memory is still 169.9MB. Free memory was 82.1MB in the beginning and 79.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.64ms. Allocated memory is still 169.9MB. Free memory was 79.7MB in the beginning and 77.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 621.89ms. Allocated memory is still 169.9MB. Free memory was 77.0MB in the beginning and 103.8MB in the end (delta: -26.8MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3294.40ms. Allocated memory was 169.9MB in the beginning and 595.6MB in the end (delta: 425.7MB). Free memory was 103.8MB in the beginning and 331.7MB in the end (delta: -227.9MB). Peak memory consumption was 197.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 86]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 int length_0, to_int_1, length_2, to_int_3, length_4, to_int_5, result_6, result_7, result_8; [L61] 0 pthread_t t1, t2, t3; VAL [length_0=0, length_2=0, length_4=0, result_6=0, result_7=0, result_8=0, t1={5:0}, t2={6:0}, t3={3:0}, to_int_1=0, to_int_3=0, to_int_5=0] [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[length_0],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_1],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L64] 0 length_0 = __VERIFIER_nondet_int() [L65] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[to_int_1],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L65] 0 to_int_1 = __VERIFIER_nondet_int() [L66] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L66] 0 length_2 = __VERIFIER_nondet_int() [L67] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L67] 0 to_int_3 = __VERIFIER_nondet_int() [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L68] 0 length_4 = __VERIFIER_nondet_int() [L69] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L69] 0 to_int_5 = __VERIFIER_nondet_int() [L72] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L72] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [length_0=1, length_2=1, length_4=0, result_6=0, result_7=0, result_8=0, t1={5:0}, t2={6:0}, t3={3:0}, to_int_1=-2, to_int_3=0, to_int_5=0] [L43] 1 length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : minus(to_int_1, to_int_3)) VAL [_argptr={0:0}, _argptr={0:0}, length_0=1, length_2=1, length_4=0, result_6=0, result_7=0, result_8=0, to_int_1=-2, to_int_3=0, to_int_5=0] [L43] 1 length_2 == 0 ? -1 : minus(to_int_1, to_int_3) [L43] CALL 1 minus(to_int_1, to_int_3) [L86] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[b]],BinaryExpression[COMPNEQ,IdentifierExpression[b],IntegerLiteral[0]]]]] VAL [\old(a)=-2, \old(b)=0, a=-2, b=0, length_0=1, length_2=1, length_4=0, result_6=0, result_7=0, result_8=0, to_int_1=-2, to_int_3=0, to_int_5=0] - UnprovableResult [Line: 45]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 51]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 67]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 105 locations, 29 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: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 617 IncrementalHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 25 mSDtfsCounter, 617 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-31 16:08:36,493 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE