./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/parallel-misc-2-unrolled.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/parallel-misc-2-unrolled.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-d8006e4-m [2024-02-05 10:33:33,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:33:33,321 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:33:33,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:33:33,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:33:33,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:33:33,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:33:33,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:33:33,359 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:33:33,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:33:33,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:33:33,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:33:33,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:33:33,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:33:33,365 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:33:33,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:33:33,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:33:33,366 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:33:33,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:33:33,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:33:33,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:33:33,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:33:33,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:33:33,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:33:33,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:33:33,369 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:33:33,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:33:33,369 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:33:33,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:33:33,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:33:33,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:33:33,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:33:33,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:33:33,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:33:33,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:33:33,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:33:33,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:33:33,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:33:33,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:33:33,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:33:33,374 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:33:33,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:33:33,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:33:33,374 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:33:33,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:33:33,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:33:33,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:33:33,659 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:33:33,659 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:33:33,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-02-05 10:33:34,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:33:35,041 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:33:35,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2024-02-05 10:33:35,050 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2a24badb/8a7af224b54e46c580c6e03f34b0d1d5/FLAG55dee918c [2024-02-05 10:33:35,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2a24badb/8a7af224b54e46c580c6e03f34b0d1d5 [2024-02-05 10:33:35,064 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:33:35,065 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:33:35,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/parallel-misc-2-unrolled.wvr.yml/witness.yml [2024-02-05 10:33:35,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:33:35,177 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:33:35,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:33:35,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:33:35,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:33:35,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:33:35" (1/2) ... [2024-02-05 10:33:35,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61150eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:35, skipping insertion in model container [2024-02-05 10:33:35,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:33:35" (1/2) ... [2024-02-05 10:33:35,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7accba1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:35, skipping insertion in model container [2024-02-05 10:33:35,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:33:35" (2/2) ... [2024-02-05 10:33:35,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61150eda and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35, skipping insertion in model container [2024-02-05 10:33:35,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:33:35" (2/2) ... [2024-02-05 10:33:35,189 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:33:35,218 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:33:35,219 INFO L101 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,219 INFO L101 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,220 INFO L101 nessWitnessExtractor]: Location invariant before [L73-L73] (((pos == 0U) && (i1 == 0U)) && (i2 == 0U)) && (N == 0U) [2024-02-05 10:33:35,220 INFO L101 nessWitnessExtractor]: Loop invariant at [L55-L55] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,220 INFO L101 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,221 INFO L101 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,221 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,221 INFO L101 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,221 INFO L101 nessWitnessExtractor]: Location invariant before [L76-L76] N == 0U [2024-02-05 10:33:35,221 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] (i2 == 0U) && (N == 0U) [2024-02-05 10:33:35,222 INFO L101 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,222 INFO L101 nessWitnessExtractor]: Loop invariant at [L40-L40] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,222 INFO L101 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,222 INFO L101 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,222 INFO L101 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,222 INFO L101 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,223 INFO L101 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,223 INFO L101 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,223 INFO L101 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,223 INFO L101 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,223 INFO L101 nessWitnessExtractor]: Location invariant before [L59-L59] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,224 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] ((i1 == 0U) && (i2 == 0U)) && (N == 0U) [2024-02-05 10:33:35,224 INFO L101 nessWitnessExtractor]: Location invariant before [L56-L56] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,224 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-02-05 10:33:35,246 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:33:35,424 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2358,2371] [2024-02-05 10:33:35,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:33:35,435 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-05 10:33:35,486 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2358,2371] [2024-02-05 10:33:35,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:33:35,501 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:33:35,501 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35 WrapperNode [2024-02-05 10:33:35,501 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:33:35,502 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:33:35,502 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:33:35,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:33:35,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,559 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-02-05 10:33:35,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:33:35,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:33:35,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:33:35,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:33:35,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,601 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-05 10:33:35,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:33:35,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:33:35,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:33:35,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:33:35,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (1/1) ... [2024-02-05 10:33:35,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:33:35,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:33:35,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-05 10:33:35,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-05 10:33:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:33:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-05 10:33:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-05 10:33:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-05 10:33:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-05 10:33:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:33:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:33:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:33:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:33:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:33:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:33:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:33:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:33:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:33:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:33:35,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:33:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:33:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:33:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:33:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:33:35,717 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:33:35,833 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:33:35,836 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:33:36,202 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:33:36,202 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:33:36,370 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:33:36,370 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-05 10:33:36,371 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:33:36 BoogieIcfgContainer [2024-02-05 10:33:36,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:33:36,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:33:36,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:33:36,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:33:36,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:33:35" (1/4) ... [2024-02-05 10:33:36,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ad338c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:33:36, skipping insertion in model container [2024-02-05 10:33:36,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:33:35" (2/4) ... [2024-02-05 10:33:36,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ad338c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:33:36, skipping insertion in model container [2024-02-05 10:33:36,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:33:35" (3/4) ... [2024-02-05 10:33:36,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ad338c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:33:36, skipping insertion in model container [2024-02-05 10:33:36,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:33:36" (4/4) ... [2024-02-05 10:33:36,384 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2024-02-05 10:33:36,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:33:36,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-02-05 10:33:36,403 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:33:36,483 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-05 10:33:36,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 65 transitions, 144 flow [2024-02-05 10:33:36,588 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2024-02-05 10:33:36,589 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-05 10:33:36,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 63 events. 4/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-02-05 10:33:36,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 65 transitions, 144 flow [2024-02-05 10:33:36,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 62 transitions, 136 flow [2024-02-05 10:33:36,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:33:36,623 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;@75763e0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:33:36,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-02-05 10:33:36,627 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:33:36,627 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:33:36,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:33:36,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:36,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:33:36,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:36,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:36,635 INFO L85 PathProgramCache]: Analyzing trace with hash 10717, now seen corresponding path program 1 times [2024-02-05 10:33:36,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:36,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45742043] [2024-02-05 10:33:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:36,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:37,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:37,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45742043] [2024-02-05 10:33:37,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45742043] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:37,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:37,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:33:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121999400] [2024-02-05 10:33:37,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:37,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:33:37,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:37,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:33:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:33:37,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 65 [2024-02-05 10:33:37,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:37,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:37,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 65 [2024-02-05 10:33:37,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:37,451 INFO L124 PetriNetUnfolderBase]: 303/769 cut-off events. [2024-02-05 10:33:37,451 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-02-05 10:33:37,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 769 events. 303/769 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4952 event pairs, 229 based on Foata normal form. 72/658 useless extension candidates. Maximal degree in co-relation 1182. Up to 505 conditions per place. [2024-02-05 10:33:37,465 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 30 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-02-05 10:33:37,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 186 flow [2024-02-05 10:33:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:33:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:33:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-02-05 10:33:37,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2024-02-05 10:33:37,480 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 136 flow. Second operand 3 states and 114 transitions. [2024-02-05 10:33:37,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 186 flow [2024-02-05 10:33:37,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:33:37,491 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 118 flow [2024-02-05 10:33:37,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-02-05 10:33:37,500 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -7 predicate places. [2024-02-05 10:33:37,501 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 118 flow [2024-02-05 10:33:37,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:37,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:37,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-05 10:33:37,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:33:37,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:37,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:37,505 INFO L85 PathProgramCache]: Analyzing trace with hash 332541, now seen corresponding path program 1 times [2024-02-05 10:33:37,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:37,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872094065] [2024-02-05 10:33:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:37,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:37,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:37,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872094065] [2024-02-05 10:33:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872094065] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:37,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:37,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:33:37,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142446631] [2024-02-05 10:33:37,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:37,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:33:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:33:37,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:33:37,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2024-02-05 10:33:37,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:37,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:37,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2024-02-05 10:33:37,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:37,830 INFO L124 PetriNetUnfolderBase]: 303/768 cut-off events. [2024-02-05 10:33:37,831 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:33:37,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 768 events. 303/768 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4921 event pairs, 229 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 1278. Up to 503 conditions per place. [2024-02-05 10:33:37,837 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 29 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-02-05 10:33:37,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 178 flow [2024-02-05 10:33:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:33:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:33:37,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-02-05 10:33:37,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-02-05 10:33:37,841 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 118 flow. Second operand 3 states and 110 transitions. [2024-02-05 10:33:37,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 178 flow [2024-02-05 10:33:37,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:33:37,843 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 116 flow [2024-02-05 10:33:37,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-02-05 10:33:37,844 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2024-02-05 10:33:37,844 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 116 flow [2024-02-05 10:33:37,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:37,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:37,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-05 10:33:37,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:33:37,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:37,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash 10309136, now seen corresponding path program 1 times [2024-02-05 10:33:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525535935] [2024-02-05 10:33:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:37,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:37,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525535935] [2024-02-05 10:33:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525535935] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:37,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:33:37,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773604747] [2024-02-05 10:33:37,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:37,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:33:37,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:33:37,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:33:37,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-02-05 10:33:37,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:37,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:37,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-02-05 10:33:37,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:38,083 INFO L124 PetriNetUnfolderBase]: 303/767 cut-off events. [2024-02-05 10:33:38,084 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:33:38,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 767 events. 303/767 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4963 event pairs, 229 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 1274. Up to 501 conditions per place. [2024-02-05 10:33:38,090 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 28 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-02-05 10:33:38,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 174 flow [2024-02-05 10:33:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:33:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:33:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-02-05 10:33:38,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5743589743589743 [2024-02-05 10:33:38,095 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 116 flow. Second operand 3 states and 112 transitions. [2024-02-05 10:33:38,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 174 flow [2024-02-05 10:33:38,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:33:38,099 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 114 flow [2024-02-05 10:33:38,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-02-05 10:33:38,101 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -9 predicate places. [2024-02-05 10:33:38,102 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 114 flow [2024-02-05 10:33:38,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:38,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:38,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:33:38,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:33:38,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:38,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:38,103 INFO L85 PathProgramCache]: Analyzing trace with hash 319583589, now seen corresponding path program 1 times [2024-02-05 10:33:38,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:38,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065123143] [2024-02-05 10:33:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:38,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:38,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:38,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065123143] [2024-02-05 10:33:38,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065123143] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:38,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:38,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:33:38,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061107961] [2024-02-05 10:33:38,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:38,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:33:38,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:38,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:33:38,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:33:38,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 65 [2024-02-05 10:33:38,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:38,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:38,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 65 [2024-02-05 10:33:38,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:38,287 INFO L124 PetriNetUnfolderBase]: 303/766 cut-off events. [2024-02-05 10:33:38,287 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:33:38,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 766 events. 303/766 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4954 event pairs, 229 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 1270. Up to 499 conditions per place. [2024-02-05 10:33:38,292 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 27 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-02-05 10:33:38,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 170 flow [2024-02-05 10:33:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:33:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:33:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-02-05 10:33:38,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2024-02-05 10:33:38,294 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 114 flow. Second operand 3 states and 114 transitions. [2024-02-05 10:33:38,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 170 flow [2024-02-05 10:33:38,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:33:38,295 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 112 flow [2024-02-05 10:33:38,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-02-05 10:33:38,297 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -10 predicate places. [2024-02-05 10:33:38,298 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 112 flow [2024-02-05 10:33:38,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:38,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:38,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:38,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:33:38,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:38,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:38,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1227378718, now seen corresponding path program 1 times [2024-02-05 10:33:38,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:38,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198960253] [2024-02-05 10:33:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:38,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:38,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:38,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198960253] [2024-02-05 10:33:38,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198960253] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:38,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:38,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:33:38,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924457356] [2024-02-05 10:33:38,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:38,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:33:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:33:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:33:38,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 65 [2024-02-05 10:33:38,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:38,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:38,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 65 [2024-02-05 10:33:38,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:38,565 INFO L124 PetriNetUnfolderBase]: 197/470 cut-off events. [2024-02-05 10:33:38,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:33:38,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 470 events. 197/470 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2543 event pairs, 10 based on Foata normal form. 53/435 useless extension candidates. Maximal degree in co-relation 794. Up to 295 conditions per place. [2024-02-05 10:33:38,567 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 34 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-02-05 10:33:38,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 189 flow [2024-02-05 10:33:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:33:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:33:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-02-05 10:33:38,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-02-05 10:33:38,569 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 112 flow. Second operand 4 states and 140 transitions. [2024-02-05 10:33:38,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 189 flow [2024-02-05 10:33:38,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:33:38,570 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 96 flow [2024-02-05 10:33:38,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-02-05 10:33:38,571 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -17 predicate places. [2024-02-05 10:33:38,571 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 96 flow [2024-02-05 10:33:38,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:38,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:38,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:38,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:33:38,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:38,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1604012118, now seen corresponding path program 1 times [2024-02-05 10:33:38,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:38,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219787973] [2024-02-05 10:33:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:38,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219787973] [2024-02-05 10:33:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219787973] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:38,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:33:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770246066] [2024-02-05 10:33:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:33:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:33:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:33:38,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 65 [2024-02-05 10:33:38,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:38,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:38,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 65 [2024-02-05 10:33:38,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:38,751 INFO L124 PetriNetUnfolderBase]: 145/339 cut-off events. [2024-02-05 10:33:38,752 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-05 10:33:38,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 339 events. 145/339 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1654 event pairs, 9 based on Foata normal form. 42/358 useless extension candidates. Maximal degree in co-relation 579. Up to 196 conditions per place. [2024-02-05 10:33:38,753 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 35 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-02-05 10:33:38,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 181 flow [2024-02-05 10:33:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:33:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:33:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-02-05 10:33:38,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423076923076923 [2024-02-05 10:33:38,755 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 96 flow. Second operand 4 states and 141 transitions. [2024-02-05 10:33:38,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 181 flow [2024-02-05 10:33:38,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:33:38,756 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 81 flow [2024-02-05 10:33:38,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-02-05 10:33:38,757 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -24 predicate places. [2024-02-05 10:33:38,757 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 81 flow [2024-02-05 10:33:38,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:38,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:38,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:38,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:33:38,758 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:38,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:38,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1361105669, now seen corresponding path program 1 times [2024-02-05 10:33:38,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:38,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582628950] [2024-02-05 10:33:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:38,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:38,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:38,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582628950] [2024-02-05 10:33:38,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582628950] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:38,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:38,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:33:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463325976] [2024-02-05 10:33:38,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:33:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:33:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:33:38,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 65 [2024-02-05 10:33:38,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:38,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:38,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 65 [2024-02-05 10:33:38,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:38,897 INFO L124 PetriNetUnfolderBase]: 170/426 cut-off events. [2024-02-05 10:33:38,897 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-02-05 10:33:38,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 426 events. 170/426 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2194 event pairs, 33 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 715. Up to 259 conditions per place. [2024-02-05 10:33:38,900 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 27 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-02-05 10:33:38,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 172 flow [2024-02-05 10:33:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:33:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:33:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-02-05 10:33:38,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6512820512820513 [2024-02-05 10:33:38,902 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 81 flow. Second operand 3 states and 127 transitions. [2024-02-05 10:33:38,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 172 flow [2024-02-05 10:33:38,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:33:38,903 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 103 flow [2024-02-05 10:33:38,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-02-05 10:33:38,905 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -23 predicate places. [2024-02-05 10:33:38,905 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 103 flow [2024-02-05 10:33:38,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:38,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:38,905 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:38,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:33:38,905 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:38,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1993486459, now seen corresponding path program 1 times [2024-02-05 10:33:38,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:38,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594782275] [2024-02-05 10:33:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:39,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:39,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594782275] [2024-02-05 10:33:39,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594782275] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:39,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:39,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:33:39,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649389193] [2024-02-05 10:33:39,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:39,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:33:39,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:39,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:33:39,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:33:39,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-02-05 10:33:39,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:39,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:39,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-02-05 10:33:39,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:39,236 INFO L124 PetriNetUnfolderBase]: 347/676 cut-off events. [2024-02-05 10:33:39,236 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-02-05 10:33:39,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 676 events. 347/676 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3411 event pairs, 38 based on Foata normal form. 0/579 useless extension candidates. Maximal degree in co-relation 1352. Up to 284 conditions per place. [2024-02-05 10:33:39,240 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 52 selfloop transitions, 11 changer transitions 3/75 dead transitions. [2024-02-05 10:33:39,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 328 flow [2024-02-05 10:33:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:33:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:33:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-02-05 10:33:39,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6123076923076923 [2024-02-05 10:33:39,241 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 103 flow. Second operand 5 states and 199 transitions. [2024-02-05 10:33:39,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 328 flow [2024-02-05 10:33:39,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:33:39,245 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 163 flow [2024-02-05 10:33:39,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-02-05 10:33:39,247 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -17 predicate places. [2024-02-05 10:33:39,248 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 163 flow [2024-02-05 10:33:39,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:39,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:39,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:39,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-05 10:33:39,248 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:39,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2014128779, now seen corresponding path program 2 times [2024-02-05 10:33:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079955347] [2024-02-05 10:33:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:39,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:39,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:39,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079955347] [2024-02-05 10:33:39,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079955347] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:39,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:39,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:33:39,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974028005] [2024-02-05 10:33:39,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:39,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:33:39,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:39,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:33:39,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:33:39,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-02-05 10:33:39,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:39,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:39,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-02-05 10:33:39,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:39,553 INFO L124 PetriNetUnfolderBase]: 327/668 cut-off events. [2024-02-05 10:33:39,553 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2024-02-05 10:33:39,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 668 events. 327/668 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3323 event pairs, 32 based on Foata normal form. 20/678 useless extension candidates. Maximal degree in co-relation 1589. Up to 252 conditions per place. [2024-02-05 10:33:39,558 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 53 selfloop transitions, 14 changer transitions 4/80 dead transitions. [2024-02-05 10:33:39,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 419 flow [2024-02-05 10:33:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:33:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:33:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-02-05 10:33:39,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-02-05 10:33:39,559 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 163 flow. Second operand 5 states and 200 transitions. [2024-02-05 10:33:39,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 419 flow [2024-02-05 10:33:39,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 80 transitions, 419 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-05 10:33:39,565 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 257 flow [2024-02-05 10:33:39,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-02-05 10:33:39,566 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -9 predicate places. [2024-02-05 10:33:39,566 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 257 flow [2024-02-05 10:33:39,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:39,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:39,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-05 10:33:39,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:39,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1993502701, now seen corresponding path program 1 times [2024-02-05 10:33:39,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:39,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921261439] [2024-02-05 10:33:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:39,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:39,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:39,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921261439] [2024-02-05 10:33:39,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921261439] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:39,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:39,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:33:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388429007] [2024-02-05 10:33:39,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:39,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:33:39,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:33:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:33:39,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-02-05 10:33:39,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:39,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:39,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-02-05 10:33:39,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:39,895 INFO L124 PetriNetUnfolderBase]: 333/674 cut-off events. [2024-02-05 10:33:39,896 INFO L125 PetriNetUnfolderBase]: For 1224/1227 co-relation queries the response was YES. [2024-02-05 10:33:39,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 674 events. 333/674 cut-off events. For 1224/1227 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3429 event pairs, 44 based on Foata normal form. 8/671 useless extension candidates. Maximal degree in co-relation 1932. Up to 366 conditions per place. [2024-02-05 10:33:39,900 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 57 selfloop transitions, 10 changer transitions 4/80 dead transitions. [2024-02-05 10:33:39,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 511 flow [2024-02-05 10:33:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:33:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:33:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 196 transitions. [2024-02-05 10:33:39,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6030769230769231 [2024-02-05 10:33:39,902 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 257 flow. Second operand 5 states and 196 transitions. [2024-02-05 10:33:39,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 511 flow [2024-02-05 10:33:39,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 507 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-05 10:33:39,909 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 312 flow [2024-02-05 10:33:39,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-02-05 10:33:39,911 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-02-05 10:33:39,913 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 312 flow [2024-02-05 10:33:39,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:39,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:39,914 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:39,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-05 10:33:39,914 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:39,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:39,915 INFO L85 PathProgramCache]: Analyzing trace with hash 471330807, now seen corresponding path program 2 times [2024-02-05 10:33:39,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:39,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167413100] [2024-02-05 10:33:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:39,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:40,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:40,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167413100] [2024-02-05 10:33:40,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167413100] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:40,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:40,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:33:40,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984844732] [2024-02-05 10:33:40,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:40,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:33:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:40,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:33:40,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:33:40,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2024-02-05 10:33:40,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:40,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:40,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2024-02-05 10:33:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:40,186 INFO L124 PetriNetUnfolderBase]: 299/633 cut-off events. [2024-02-05 10:33:40,186 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2024-02-05 10:33:40,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 633 events. 299/633 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2894 event pairs, 68 based on Foata normal form. 18/646 useless extension candidates. Maximal degree in co-relation 1867. Up to 321 conditions per place. [2024-02-05 10:33:40,192 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 54 selfloop transitions, 14 changer transitions 4/81 dead transitions. [2024-02-05 10:33:40,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 81 transitions, 574 flow [2024-02-05 10:33:40,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:33:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:33:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-02-05 10:33:40,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5969230769230769 [2024-02-05 10:33:40,193 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 312 flow. Second operand 5 states and 194 transitions. [2024-02-05 10:33:40,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 81 transitions, 574 flow [2024-02-05 10:33:40,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 566 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-02-05 10:33:40,199 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 389 flow [2024-02-05 10:33:40,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-02-05 10:33:40,199 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2024-02-05 10:33:40,199 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 389 flow [2024-02-05 10:33:40,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:40,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:40,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:40,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-05 10:33:40,200 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 44 more)] === [2024-02-05 10:33:40,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:40,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1562210815, now seen corresponding path program 1 times [2024-02-05 10:33:40,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:40,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402321383] [2024-02-05 10:33:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:40,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-05 10:33:40,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:40,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402321383] [2024-02-05 10:33:40,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402321383] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-05 10:33:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742102202] [2024-02-05 10:33:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:40,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-05 10:33:40,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:33:40,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-05 10:33:40,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-05 10:33:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:40,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-05 10:33:40,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-05 10:33:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-05 10:33:40,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-05 10:33:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-05 10:33:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742102202] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-05 10:33:40,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-05 10:33:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-02-05 10:33:40,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866652556] [2024-02-05 10:33:40,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-05 10:33:40,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:33:40,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:40,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:33:40,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:33:40,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 65 [2024-02-05 10:33:40,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:40,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:40,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 65 [2024-02-05 10:33:40,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:41,049 INFO L124 PetriNetUnfolderBase]: 208/482 cut-off events. [2024-02-05 10:33:41,050 INFO L125 PetriNetUnfolderBase]: For 1253/1276 co-relation queries the response was YES. [2024-02-05 10:33:41,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 482 events. 208/482 cut-off events. For 1253/1276 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2171 event pairs, 44 based on Foata normal form. 3/455 useless extension candidates. Maximal degree in co-relation 1489. Up to 117 conditions per place. [2024-02-05 10:33:41,053 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2024-02-05 10:33:41,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 569 flow [2024-02-05 10:33:41,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:33:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:33:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-02-05 10:33:41,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794871794871795 [2024-02-05 10:33:41,055 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 389 flow. Second operand 6 states and 226 transitions. [2024-02-05 10:33:41,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 569 flow [2024-02-05 10:33:41,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 554 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-02-05 10:33:41,062 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2024-02-05 10:33:41,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2024-02-05 10:33:41,063 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2024-02-05 10:33:41,063 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2024-02-05 10:33:41,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:41,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 47 remaining) [2024-02-05 10:33:41,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 47 remaining) [2024-02-05 10:33:41,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 47 remaining) [2024-02-05 10:33:41,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 47 remaining) [2024-02-05 10:33:41,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 47 remaining) [2024-02-05 10:33:41,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 47 remaining) [2024-02-05 10:33:41,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 47 remaining) [2024-02-05 10:33:41,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 47 remaining) [2024-02-05 10:33:41,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 47 remaining) [2024-02-05 10:33:41,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 47 remaining) [2024-02-05 10:33:41,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 47 remaining) [2024-02-05 10:33:41,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 47 remaining) [2024-02-05 10:33:41,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 47 remaining) [2024-02-05 10:33:41,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 47 remaining) [2024-02-05 10:33:41,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 47 remaining) [2024-02-05 10:33:41,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 47 remaining) [2024-02-05 10:33:41,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 47 remaining) [2024-02-05 10:33:41,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 47 remaining) [2024-02-05 10:33:41,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 47 remaining) [2024-02-05 10:33:41,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 47 remaining) [2024-02-05 10:33:41,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 47 remaining) [2024-02-05 10:33:41,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 47 remaining) [2024-02-05 10:33:41,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 47 remaining) [2024-02-05 10:33:41,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 47 remaining) [2024-02-05 10:33:41,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (22 of 47 remaining) [2024-02-05 10:33:41,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 47 remaining) [2024-02-05 10:33:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 47 remaining) [2024-02-05 10:33:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 47 remaining) [2024-02-05 10:33:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 47 remaining) [2024-02-05 10:33:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 47 remaining) [2024-02-05 10:33:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 47 remaining) [2024-02-05 10:33:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 47 remaining) [2024-02-05 10:33:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 47 remaining) [2024-02-05 10:33:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 47 remaining) [2024-02-05 10:33:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 47 remaining) [2024-02-05 10:33:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 47 remaining) [2024-02-05 10:33:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 47 remaining) [2024-02-05 10:33:41,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 47 remaining) [2024-02-05 10:33:41,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 47 remaining) [2024-02-05 10:33:41,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 47 remaining) [2024-02-05 10:33:41,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 47 remaining) [2024-02-05 10:33:41,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 47 remaining) [2024-02-05 10:33:41,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 47 remaining) [2024-02-05 10:33:41,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 47 remaining) [2024-02-05 10:33:41,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 47 remaining) [2024-02-05 10:33:41,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 47 remaining) [2024-02-05 10:33:41,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 47 remaining) [2024-02-05 10:33:41,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-05 10:33:41,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-05 10:33:41,288 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:41,294 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-05 10:33:41,294 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-05 10:33:41,301 INFO L503 ceAbstractionStarter]: Automizer considered 24 witness invariants [2024-02-05 10:33:41,301 INFO L504 ceAbstractionStarter]: WitnessConsidered=24 [2024-02-05 10:33:41,302 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 10:33:41 BasicIcfg [2024-02-05 10:33:41,303 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-05 10:33:41,303 INFO L158 Benchmark]: Toolchain (without parser) took 6126.06ms. Allocated memory was 167.8MB in the beginning and 291.5MB in the end (delta: 123.7MB). Free memory was 110.5MB in the beginning and 171.0MB in the end (delta: -60.5MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. [2024-02-05 10:33:41,303 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:33:41,304 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:33:41,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.64ms. Allocated memory is still 167.8MB. Free memory was 110.2MB in the beginning and 94.6MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-02-05 10:33:41,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.41ms. Allocated memory is still 167.8MB. Free memory was 94.6MB in the beginning and 93.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-05 10:33:41,304 INFO L158 Benchmark]: Boogie Preprocessor took 78.94ms. Allocated memory is still 167.8MB. Free memory was 92.5MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-05 10:33:41,305 INFO L158 Benchmark]: RCFGBuilder took 730.51ms. Allocated memory was 167.8MB in the beginning and 213.9MB in the end (delta: 46.1MB). Free memory was 90.4MB in the beginning and 166.9MB in the end (delta: -76.5MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2024-02-05 10:33:41,305 INFO L158 Benchmark]: TraceAbstraction took 4927.31ms. Allocated memory was 213.9MB in the beginning and 291.5MB in the end (delta: 77.6MB). Free memory was 165.8MB in the beginning and 171.0MB in the end (delta: -5.1MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2024-02-05 10:33:41,307 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.64ms. Allocated memory is still 167.8MB. Free memory was 110.2MB in the beginning and 94.6MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.41ms. Allocated memory is still 167.8MB. Free memory was 94.6MB in the beginning and 93.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.94ms. Allocated memory is still 167.8MB. Free memory was 92.5MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 730.51ms. Allocated memory was 167.8MB in the beginning and 213.9MB in the end (delta: 46.1MB). Free memory was 90.4MB in the beginning and 166.9MB in the end (delta: -76.5MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4927.31ms. Allocated memory was 213.9MB in the beginning and 291.5MB in the end (delta: 77.6MB). Free memory was 165.8MB in the beginning and 171.0MB in the end (delta: -5.1MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 40]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 51]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 41]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 42]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 43]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 44]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 45]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 46]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 47]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 48]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 55]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 66]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 56]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 57]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 58]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 59]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 60]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 61]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 62]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 63]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 73]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 74]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 75]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 76]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 87]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 106 locations, 47 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 431 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1026 IncrementalHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 31 mSDtfsCounter, 1026 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=11, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 1978 SizeOfPredicates, 6 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 11/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-05 10:33:41,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE