./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-ab2e0ac-m [2024-01-29 14:18:21,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:18:21,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:18:21,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:18:21,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:18:21,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:18:21,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:18:21,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:18:21,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:18:21,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:18:21,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:18:21,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:18:21,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:18:21,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:18:21,617 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:18:21,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:18:21,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:18:21,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:18:21,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:18:21,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:18:21,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:18:21,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:18:21,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:18:21,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:18:21,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:18:21,621 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:18:21,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:18:21,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:18:21,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:18:21,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:18:21,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:18:21,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:18:21,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:18:21,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:18:21,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:18:21,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:18:21,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:18:21,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:18:21,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:18:21,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:18:21,626 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:18:21,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:18:21,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:18:21,627 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:18:21,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:18:21,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:18:21,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:18:21,946 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:18:21,946 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:18:21,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.wvr.yml/witness.yml [2024-01-29 14:18:22,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:18:22,091 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:18:22,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c [2024-01-29 14:18:23,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:18:23,472 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:18:23,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c [2024-01-29 14:18:23,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6576699/9950576da52c4b009935dbecd90760d8/FLAGb7c5f15d4 [2024-01-29 14:18:23,491 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6576699/9950576da52c4b009935dbecd90760d8 [2024-01-29 14:18:23,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:18:23,493 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:18:23,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:18:23,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:18:23,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:18:23,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:18:22" (1/2) ... [2024-01-29 14:18:23,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303e336 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:23, skipping insertion in model container [2024-01-29 14:18:23,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:18:22" (1/2) ... [2024-01-29 14:18:23,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@169fb146 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:18:23, skipping insertion in model container [2024-01-29 14:18:23,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:18:23" (2/2) ... [2024-01-29 14:18:23,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303e336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23, skipping insertion in model container [2024-01-29 14:18:23,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:18:23" (2/2) ... [2024-01-29 14:18:23,503 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:18:23,517 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:18:23,518 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-29 14:18:23,518 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] x_1 == 0U [2024-01-29 14:18:23,518 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] x_2 == 0U [2024-01-29 14:18:23,519 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] b == 0U [2024-01-29 14:18:23,519 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] x_1 == 0U [2024-01-29 14:18:23,519 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] x_2 == 0U [2024-01-29 14:18:23,519 INFO L98 nessWitnessExtractor]: Loop invariant at [L50-L52] ((((((((((((0U == i && i == 0U) || 12U <= i) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U [2024-01-29 14:18:23,520 INFO L98 nessWitnessExtractor]: Loop invariant at [L50-L52] (unsigned long )_argptr == 0UL [2024-01-29 14:18:23,520 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] ((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U) [2024-01-29 14:18:23,520 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] x_2 == 0U [2024-01-29 14:18:23,520 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] x_1 == 0U [2024-01-29 14:18:23,520 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-29 14:18:23,520 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] b == 0U [2024-01-29 14:18:23,521 INFO L98 nessWitnessExtractor]: Loop invariant at [L42-L44] (unsigned long )_argptr == 0UL [2024-01-29 14:18:23,521 INFO L98 nessWitnessExtractor]: Loop invariant at [L42-L44] (((((((((((12U <= i || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U) [2024-01-29 14:18:23,521 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] ((((((((((((0U == i && i == 0U) || (12U <= i && i <= 4294967294U)) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U [2024-01-29 14:18:23,521 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-29 14:18:23,521 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (0LL - (long long )a) + (long long )b >= 0LL [2024-01-29 14:18:23,521 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (long long )a + (long long )b >= 0LL [2024-01-29 14:18:23,521 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] b == 0U [2024-01-29 14:18:23,522 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] x_2 == 0U [2024-01-29 14:18:23,522 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (long long )a - (long long )b >= 0LL [2024-01-29 14:18:23,522 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (0LL - (long long )a) - (long long )b >= 0LL [2024-01-29 14:18:23,522 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] a == 0U [2024-01-29 14:18:23,522 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] x_1 == 0U [2024-01-29 14:18:23,522 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-01-29 14:18:23,541 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:18:23,703 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c[1936,1949] [2024-01-29 14:18:23,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:18:23,727 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:18:23,786 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c[1936,1949] [2024-01-29 14:18:23,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:18:23,804 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:18:23,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23 WrapperNode [2024-01-29 14:18:23,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:18:23,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:18:23,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:18:23,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:18:23,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,840 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-01-29 14:18:23,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:18:23,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:18:23,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:18:23,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:18:23,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,871 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-29 14:18:23,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:18:23,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:18:23,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:18:23,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:18:23,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (1/1) ... [2024-01-29 14:18:23,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:18:23,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:18:23,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-29 14:18:23,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-29 14:18:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:18:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-29 14:18:23,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-29 14:18:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-29 14:18:23,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-29 14:18:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:18:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:18:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:18:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:18:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:18:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:18:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:18:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:18:23,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:18:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 14:18:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 14:18:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 14:18:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:18:23,950 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 14:18:24,049 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:18:24,051 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:18:24,339 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:18:24,340 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:18:24,431 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:18:24,432 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-29 14:18:24,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:18:24 BoogieIcfgContainer [2024-01-29 14:18:24,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:18:24,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:18:24,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:18:24,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:18:24,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:18:22" (1/4) ... [2024-01-29 14:18:24,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63eb7a21 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:18:24, skipping insertion in model container [2024-01-29 14:18:24,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:18:23" (2/4) ... [2024-01-29 14:18:24,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63eb7a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:18:24, skipping insertion in model container [2024-01-29 14:18:24,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:18:23" (3/4) ... [2024-01-29 14:18:24,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63eb7a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:18:24, skipping insertion in model container [2024-01-29 14:18:24,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:18:24" (4/4) ... [2024-01-29 14:18:24,442 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-01-29 14:18:24,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:18:24,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-01-29 14:18:24,461 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:18:24,556 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 14:18:24,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 172 flow [2024-01-29 14:18:24,650 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2024-01-29 14:18:24,650 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:18:24,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 2/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-01-29 14:18:24,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 172 flow [2024-01-29 14:18:24,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 76 transitions, 164 flow [2024-01-29 14:18:24,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:18:24,680 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;@5920b78c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:18:24,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-01-29 14:18:24,684 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:18:24,684 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 14:18:24,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:18:24,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:24,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 14:18:24,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-29 14:18:24,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash 9323, now seen corresponding path program 1 times [2024-01-29 14:18:24,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:24,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343149520] [2024-01-29 14:18:24,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:24,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:24,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:24,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343149520] [2024-01-29 14:18:24,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343149520] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:24,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:24,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:18:24,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487056417] [2024-01-29 14:18:24,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:24,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:24,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:24,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:24,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:25,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-29 14:18:25,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:25,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:25,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-29 14:18:25,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:25,233 INFO L124 PetriNetUnfolderBase]: 143/530 cut-off events. [2024-01-29 14:18:25,234 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-01-29 14:18:25,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 530 events. 143/530 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3114 event pairs, 57 based on Foata normal form. 73/504 useless extension candidates. Maximal degree in co-relation 696. Up to 141 conditions per place. [2024-01-29 14:18:25,240 INFO L140 encePairwiseOnDemand]: 68/79 looper letters, 33 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-01-29 14:18:25,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 82 transitions, 255 flow [2024-01-29 14:18:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2024-01-29 14:18:25,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8143459915611815 [2024-01-29 14:18:25,256 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 164 flow. Second operand 3 states and 193 transitions. [2024-01-29 14:18:25,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 82 transitions, 255 flow [2024-01-29 14:18:25,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 241 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 14:18:25,265 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 152 flow [2024-01-29 14:18:25,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-01-29 14:18:25,270 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2024-01-29 14:18:25,271 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 152 flow [2024-01-29 14:18:25,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:25,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:25,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-29 14:18:25,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:18:25,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-29 14:18:25,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash 289273, now seen corresponding path program 1 times [2024-01-29 14:18:25,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143404665] [2024-01-29 14:18:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:25,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:25,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:25,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143404665] [2024-01-29 14:18:25,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143404665] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:25,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:25,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:18:25,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002202911] [2024-01-29 14:18:25,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:25,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:25,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:25,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:25,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:25,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 79 [2024-01-29 14:18:25,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:25,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:25,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 79 [2024-01-29 14:18:25,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:25,445 INFO L124 PetriNetUnfolderBase]: 157/450 cut-off events. [2024-01-29 14:18:25,445 INFO L125 PetriNetUnfolderBase]: For 30/31 co-relation queries the response was YES. [2024-01-29 14:18:25,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 450 events. 157/450 cut-off events. For 30/31 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2383 event pairs, 133 based on Foata normal form. 1/345 useless extension candidates. Maximal degree in co-relation 393. Up to 277 conditions per place. [2024-01-29 14:18:25,452 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 20 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-01-29 14:18:25,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 192 flow [2024-01-29 14:18:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-01-29 14:18:25,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.729957805907173 [2024-01-29 14:18:25,456 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 152 flow. Second operand 3 states and 173 transitions. [2024-01-29 14:18:25,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 192 flow [2024-01-29 14:18:25,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:18:25,458 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 150 flow [2024-01-29 14:18:25,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-01-29 14:18:25,460 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -10 predicate places. [2024-01-29 14:18:25,460 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 150 flow [2024-01-29 14:18:25,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:25,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:25,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-29 14:18:25,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:18:25,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-29 14:18:25,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash 8967769, now seen corresponding path program 1 times [2024-01-29 14:18:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:25,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930881024] [2024-01-29 14:18:25,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:25,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:25,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:25,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930881024] [2024-01-29 14:18:25,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930881024] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:25,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:25,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:18:25,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36144172] [2024-01-29 14:18:25,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:25,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:25,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:25,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 79 [2024-01-29 14:18:25,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:25,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:25,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 79 [2024-01-29 14:18:25,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:25,709 INFO L124 PetriNetUnfolderBase]: 233/607 cut-off events. [2024-01-29 14:18:25,710 INFO L125 PetriNetUnfolderBase]: For 31/39 co-relation queries the response was YES. [2024-01-29 14:18:25,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 607 events. 233/607 cut-off events. For 31/39 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3477 event pairs, 205 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 1043. Up to 406 conditions per place. [2024-01-29 14:18:25,716 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 23 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-01-29 14:18:25,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 194 flow [2024-01-29 14:18:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-01-29 14:18:25,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2024-01-29 14:18:25,722 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 150 flow. Second operand 3 states and 159 transitions. [2024-01-29 14:18:25,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 194 flow [2024-01-29 14:18:25,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:25,726 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 144 flow [2024-01-29 14:18:25,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-01-29 14:18:25,729 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -13 predicate places. [2024-01-29 14:18:25,729 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 144 flow [2024-01-29 14:18:25,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:25,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:25,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 14:18:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:18:25,730 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-29 14:18:25,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:25,730 INFO L85 PathProgramCache]: Analyzing trace with hash 28101440, now seen corresponding path program 1 times [2024-01-29 14:18:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098952727] [2024-01-29 14:18:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:25,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:25,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:25,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098952727] [2024-01-29 14:18:25,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098952727] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:25,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:25,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:18:25,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804752537] [2024-01-29 14:18:25,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:25,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:25,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:25,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:25,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-29 14:18:25,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:25,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:25,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-29 14:18:25,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:25,955 INFO L124 PetriNetUnfolderBase]: 208/661 cut-off events. [2024-01-29 14:18:25,955 INFO L125 PetriNetUnfolderBase]: For 41/46 co-relation queries the response was YES. [2024-01-29 14:18:25,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 661 events. 208/661 cut-off events. For 41/46 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4052 event pairs, 95 based on Foata normal form. 9/568 useless extension candidates. Maximal degree in co-relation 1064. Up to 191 conditions per place. [2024-01-29 14:18:25,960 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 33 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-01-29 14:18:25,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 240 flow [2024-01-29 14:18:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-01-29 14:18:25,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7763713080168776 [2024-01-29 14:18:25,962 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 144 flow. Second operand 3 states and 184 transitions. [2024-01-29 14:18:25,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 240 flow [2024-01-29 14:18:25,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:25,964 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 146 flow [2024-01-29 14:18:25,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-01-29 14:18:25,965 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -15 predicate places. [2024-01-29 14:18:25,965 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 146 flow [2024-01-29 14:18:25,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:25,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:25,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:25,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:18:25,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-29 14:18:25,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash -57891566, now seen corresponding path program 1 times [2024-01-29 14:18:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:25,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590296089] [2024-01-29 14:18:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:25,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:25,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590296089] [2024-01-29 14:18:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590296089] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:18:25,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874215502] [2024-01-29 14:18:25,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:25,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:18:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:25,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:18:25,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:18:26,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2024-01-29 14:18:26,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:26,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:26,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2024-01-29 14:18:26,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:26,125 INFO L124 PetriNetUnfolderBase]: 245/745 cut-off events. [2024-01-29 14:18:26,126 INFO L125 PetriNetUnfolderBase]: For 68/72 co-relation queries the response was YES. [2024-01-29 14:18:26,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 745 events. 245/745 cut-off events. For 68/72 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4738 event pairs, 123 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 890. Up to 254 conditions per place. [2024-01-29 14:18:26,130 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 37 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-01-29 14:18:26,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 252 flow [2024-01-29 14:18:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:18:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:18:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-01-29 14:18:26,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7383966244725738 [2024-01-29 14:18:26,131 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 146 flow. Second operand 3 states and 175 transitions. [2024-01-29 14:18:26,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 252 flow [2024-01-29 14:18:26,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 245 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 14:18:26,134 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 141 flow [2024-01-29 14:18:26,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-01-29 14:18:26,135 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -17 predicate places. [2024-01-29 14:18:26,135 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 141 flow [2024-01-29 14:18:26,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:26,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:26,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:26,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:18:26,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-29 14:18:26,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:26,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1185311936, now seen corresponding path program 1 times [2024-01-29 14:18:26,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642026782] [2024-01-29 14:18:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:26,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642026782] [2024-01-29 14:18:26,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642026782] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:26,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:26,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:18:26,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545574756] [2024-01-29 14:18:26,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:26,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:18:26,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:18:26,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:18:26,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-29 14:18:26,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:26,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:26,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-29 14:18:26,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:26,401 INFO L124 PetriNetUnfolderBase]: 176/518 cut-off events. [2024-01-29 14:18:26,401 INFO L125 PetriNetUnfolderBase]: For 47/51 co-relation queries the response was YES. [2024-01-29 14:18:26,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 518 events. 176/518 cut-off events. For 47/51 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2805 event pairs, 76 based on Foata normal form. 46/524 useless extension candidates. Maximal degree in co-relation 488. Up to 300 conditions per place. [2024-01-29 14:18:26,405 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 27 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-01-29 14:18:26,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 212 flow [2024-01-29 14:18:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:18:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:18:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2024-01-29 14:18:26,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183544303797469 [2024-01-29 14:18:26,406 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 141 flow. Second operand 4 states and 227 transitions. [2024-01-29 14:18:26,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 212 flow [2024-01-29 14:18:26,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:26,410 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 131 flow [2024-01-29 14:18:26,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-01-29 14:18:26,413 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -20 predicate places. [2024-01-29 14:18:26,413 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 131 flow [2024-01-29 14:18:26,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:26,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:26,414 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] [2024-01-29 14:18:26,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 14:18:26,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-29 14:18:26,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:26,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1579962416, now seen corresponding path program 1 times [2024-01-29 14:18:26,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:26,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572720773] [2024-01-29 14:18:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:26,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:18:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:18:26,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:18:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572720773] [2024-01-29 14:18:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572720773] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:18:26,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:18:26,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:18:26,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752733285] [2024-01-29 14:18:26,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:18:26,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:18:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:18:26,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:18:26,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:18:26,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-29 14:18:26,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:26,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:18:26,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-29 14:18:26,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:18:26,629 INFO L124 PetriNetUnfolderBase]: 176/535 cut-off events. [2024-01-29 14:18:26,629 INFO L125 PetriNetUnfolderBase]: For 65/69 co-relation queries the response was YES. [2024-01-29 14:18:26,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 535 events. 176/535 cut-off events. For 65/69 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2989 event pairs, 6 based on Foata normal form. 72/599 useless extension candidates. Maximal degree in co-relation 788. Up to 274 conditions per place. [2024-01-29 14:18:26,632 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 30 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-01-29 14:18:26,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 214 flow [2024-01-29 14:18:26,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:18:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:18:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2024-01-29 14:18:26,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7310126582278481 [2024-01-29 14:18:26,633 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 131 flow. Second operand 4 states and 231 transitions. [2024-01-29 14:18:26,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 214 flow [2024-01-29 14:18:26,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:18:26,635 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 124 flow [2024-01-29 14:18:26,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-01-29 14:18:26,636 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -23 predicate places. [2024-01-29 14:18:26,636 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 124 flow [2024-01-29 14:18:26,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:18:26,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:18:26,636 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] [2024-01-29 14:18:26,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 14:18:26,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-29 14:18:26,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:18:26,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1593558005, now seen corresponding path program 1 times [2024-01-29 14:18:26,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:18:26,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808673777] [2024-01-29 14:18:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:18:26,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:18:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:18:26,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 14:18:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:18:26,670 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 14:18:26,670 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 14:18:26,671 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 50 remaining) [2024-01-29 14:18:26,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 50 remaining) [2024-01-29 14:18:26,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 50 remaining) [2024-01-29 14:18:26,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 50 remaining) [2024-01-29 14:18:26,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 50 remaining) [2024-01-29 14:18:26,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 50 remaining) [2024-01-29 14:18:26,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 50 remaining) [2024-01-29 14:18:26,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 50 remaining) [2024-01-29 14:18:26,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 50 remaining) [2024-01-29 14:18:26,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 50 remaining) [2024-01-29 14:18:26,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 50 remaining) [2024-01-29 14:18:26,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 50 remaining) [2024-01-29 14:18:26,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 50 remaining) [2024-01-29 14:18:26,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 50 remaining) [2024-01-29 14:18:26,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 50 remaining) [2024-01-29 14:18:26,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 50 remaining) [2024-01-29 14:18:26,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 50 remaining) [2024-01-29 14:18:26,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 50 remaining) [2024-01-29 14:18:26,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 50 remaining) [2024-01-29 14:18:26,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 50 remaining) [2024-01-29 14:18:26,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 50 remaining) [2024-01-29 14:18:26,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 50 remaining) [2024-01-29 14:18:26,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 50 remaining) [2024-01-29 14:18:26,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 50 remaining) [2024-01-29 14:18:26,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 50 remaining) [2024-01-29 14:18:26,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 50 remaining) [2024-01-29 14:18:26,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 50 remaining) [2024-01-29 14:18:26,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 50 remaining) [2024-01-29 14:18:26,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 50 remaining) [2024-01-29 14:18:26,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 50 remaining) [2024-01-29 14:18:26,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 50 remaining) [2024-01-29 14:18:26,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (18 of 50 remaining) [2024-01-29 14:18:26,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 50 remaining) [2024-01-29 14:18:26,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 50 remaining) [2024-01-29 14:18:26,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 50 remaining) [2024-01-29 14:18:26,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 50 remaining) [2024-01-29 14:18:26,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 50 remaining) [2024-01-29 14:18:26,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 50 remaining) [2024-01-29 14:18:26,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 50 remaining) [2024-01-29 14:18:26,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 50 remaining) [2024-01-29 14:18:26,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 50 remaining) [2024-01-29 14:18:26,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 50 remaining) [2024-01-29 14:18:26,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 50 remaining) [2024-01-29 14:18:26,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 50 remaining) [2024-01-29 14:18:26,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 50 remaining) [2024-01-29 14:18:26,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 50 remaining) [2024-01-29 14:18:26,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 50 remaining) [2024-01-29 14:18:26,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 50 remaining) [2024-01-29 14:18:26,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 50 remaining) [2024-01-29 14:18:26,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 50 remaining) [2024-01-29 14:18:26,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 14:18:26,680 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:18:26,685 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-29 14:18:26,685 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-29 14:18:26,707 INFO L503 ceAbstractionStarter]: Automizer considered 30 witness invariants [2024-01-29 14:18:26,707 INFO L504 ceAbstractionStarter]: WitnessConsidered=30 [2024-01-29 14:18:26,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 02:18:26 BasicIcfg [2024-01-29 14:18:26,708 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-29 14:18:26,709 INFO L158 Benchmark]: Toolchain (without parser) took 3215.70ms. Allocated memory was 159.4MB in the beginning and 209.7MB in the end (delta: 50.3MB). Free memory was 88.7MB in the beginning and 73.2MB in the end (delta: 15.6MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. [2024-01-29 14:18:26,709 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 121.6MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:18:26,709 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 159.4MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:18:26,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.54ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 72.6MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-01-29 14:18:26,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.20ms. Allocated memory is still 159.4MB. Free memory was 72.6MB in the beginning and 70.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 14:18:26,710 INFO L158 Benchmark]: Boogie Preprocessor took 45.83ms. Allocated memory is still 159.4MB. Free memory was 70.8MB in the beginning and 68.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 14:18:26,710 INFO L158 Benchmark]: RCFGBuilder took 536.34ms. Allocated memory is still 159.4MB. Free memory was 68.7MB in the beginning and 105.2MB in the end (delta: -36.5MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-01-29 14:18:26,711 INFO L158 Benchmark]: TraceAbstraction took 2273.71ms. Allocated memory was 159.4MB in the beginning and 209.7MB in the end (delta: 50.3MB). Free memory was 104.5MB in the beginning and 73.2MB in the end (delta: 31.3MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. [2024-01-29 14:18:26,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 121.6MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.11ms. Allocated memory is still 159.4MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.54ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 72.6MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.20ms. Allocated memory is still 159.4MB. Free memory was 72.6MB in the beginning and 70.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.83ms. Allocated memory is still 159.4MB. Free memory was 70.8MB in the beginning and 68.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 536.34ms. Allocated memory is still 159.4MB. Free memory was 68.7MB in the beginning and 105.2MB in the end (delta: -36.5MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2273.71ms. Allocated memory was 159.4MB in the beginning and 209.7MB in the end (delta: 50.3MB). Free memory was 104.5MB in the beginning and 73.2MB in the end (delta: 31.3MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 unsigned int x_1, x_2, a, b; [L58] 0 pthread_t t1, t2; VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[a],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,CastExpression[ACSLType[long long],IdentifierExpression[a]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,CastExpression[ACSLType[long long],IdentifierExpression[a]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] [L61] 0 a = __VERIFIER_nondet_uint() [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]]] VAL [b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]]] VAL [b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[0U]]]] [L62] 0 b = __VERIFIER_nondet_uint() [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]]] VAL [t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]]] [L64] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [_argptr={0:0}, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L42] 1 unsigned int i=0; VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0] [L42] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0] [L42] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPLEQ,IntegerLiteral[12U],IdentifierExpression[i]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[11U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[10U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[9U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[8U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[7U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[6U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[5U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[4U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[3U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[2U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[1U]]],BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IntegerLiteral[0U],IdentifierExpression[i]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[0U]]]]]] VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0] [L42] COND TRUE 1 i