./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.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-958ec4d-m [2024-02-07 14:28:15,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:28:15,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:28:15,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:28:15,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:28:15,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:28:15,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:28:15,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:28:15,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:28:15,503 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:28:15,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:28:15,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:28:15,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:28:15,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:28:15,504 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:28:15,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:28:15,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:28:15,505 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:28:15,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:28:15,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:28:15,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:28:15,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:28:15,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:28:15,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:28:15,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:28:15,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:28:15,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:28:15,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:28:15,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:28:15,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:28:15,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:28:15,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:28:15,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:28:15,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:28:15,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:28:15,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:28:15,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:28:15,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:28:15,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:28:15,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:28:15,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:28:15,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:28:15,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:28:15,511 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:28:15,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:28:15,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:28:15,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:28:15,682 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:28:15,683 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:28:15,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.yml/witness.yml [2024-02-07 14:28:15,794 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:28:15,795 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:28:15,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-02-07 14:28:16,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:28:17,036 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:28:17,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-02-07 14:28:17,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f913032a8/6bcb564ac11e415bae1e58a152233b20/FLAG64d717065 [2024-02-07 14:28:17,060 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f913032a8/6bcb564ac11e415bae1e58a152233b20 [2024-02-07 14:28:17,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:28:17,062 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:28:17,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:28:17,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:28:17,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:28:17,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:28:15" (1/2) ... [2024-02-07 14:28:17,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f70a914 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:28:17, skipping insertion in model container [2024-02-07 14:28:17,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:28:15" (1/2) ... [2024-02-07 14:28:17,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10af0628 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:28:17, skipping insertion in model container [2024-02-07 14:28:17,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:28:17" (2/2) ... [2024-02-07 14:28:17,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f70a914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17, skipping insertion in model container [2024-02-07 14:28:17,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:28:17" (2/2) ... [2024-02-07 14:28:17,070 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:28:17,130 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:28:17,131 INFO L76 edCorrectnessWitness]: Location invariant after [L711-L711] ((((4294967296LL + (long long )y) + (long long )z >= 0LL) && ((4294967295LL - (long long )y) + (long long )z >= 0LL)) && ((4294967295LL + (long long )y) - (long long )z >= 0LL)) && ((4294967294LL - (long long )y) - (long long )z >= 0LL) [2024-02-07 14:28:17,132 INFO L76 edCorrectnessWitness]: Location invariant after [L710-L710] ((((((((((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967296LL + (long long )x) + (long long )z >= 0LL)) && ((4294967296LL + (long long )y) + (long long )z >= 0LL)) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL - (long long )x) + (long long )z >= 0LL)) && ((4294967295LL - (long long )y) + (long long )z >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )z >= 0LL)) && ((4294967295LL + (long long )y) - (long long )z >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )z >= 0LL)) && ((4294967294LL - (long long )y) - (long long )z >= 0LL) [2024-02-07 14:28:17,132 INFO L76 edCorrectnessWitness]: Location invariant before [L723-L723] -968 <= i [2024-02-07 14:28:17,132 INFO L76 edCorrectnessWitness]: Location invariant before [L752-L752] ((((-999 <= a) && ((1016LL + (long long )a) + (long long )b >= 0LL)) && ((982LL + (long long )a) - (long long )b >= 0LL)) && (-17 == b)) && (b == -17) [2024-02-07 14:28:17,132 INFO L76 edCorrectnessWitness]: Location invariant before [L739-L739] (-999 <= g) && (-999 <= x) [2024-02-07 14:28:17,132 INFO L76 edCorrectnessWitness]: Location invariant before [L722-L722] -999 <= x [2024-02-07 14:28:17,132 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] ((((((((((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967296LL + (long long )x) + (long long )z >= 0LL)) && ((4294967296LL + (long long )y) + (long long )z >= 0LL)) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL - (long long )x) + (long long )z >= 0LL)) && ((4294967295LL - (long long )y) + (long long )z >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )z >= 0LL)) && ((4294967295LL + (long long )y) - (long long )z >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )z >= 0LL)) && ((4294967294LL - (long long )y) - (long long )z >= 0LL) [2024-02-07 14:28:17,132 INFO L76 edCorrectnessWitness]: Location invariant before [L742-L742] -999 <= x [2024-02-07 14:28:17,133 INFO L76 edCorrectnessWitness]: Location invariant before [L717-L717] (-1016 <= h) && (-999 <= x) [2024-02-07 14:28:17,133 INFO L76 edCorrectnessWitness]: Location invariant before [L740-L740] (-1016 <= h) && (h <= 2147483630) [2024-02-07 14:28:17,133 INFO L76 edCorrectnessWitness]: Location invariant before [L718-L718] (-1016 <= y) && (-999 <= x) [2024-02-07 14:28:17,133 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] ((((4294967296LL + (long long )y) + (long long )z >= 0LL) && ((4294967295LL - (long long )y) + (long long )z >= 0LL)) && ((4294967295LL + (long long )y) - (long long )z >= 0LL)) && ((4294967294LL - (long long )y) - (long long )z >= 0LL) [2024-02-07 14:28:17,133 INFO L76 edCorrectnessWitness]: Location invariant before [L716-L716] -999 <= g [2024-02-07 14:28:17,133 INFO L76 edCorrectnessWitness]: Location invariant before [L743-L743] -999 <= h [2024-02-07 14:28:17,133 INFO L76 edCorrectnessWitness]: Location invariant before [L726-L726] -999 <= x [2024-02-07 14:28:17,134 INFO L76 edCorrectnessWitness]: Location invariant before [L753-L753] ((-999 <= a) && (31 == b)) && (b == 31) [2024-02-07 14:28:17,134 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] (-1016 <= y) && (-999 <= x) [2024-02-07 14:28:17,134 INFO L76 edCorrectnessWitness]: Location invariant before [L738-L738] (-999 <= x) && (-968 <= i) [2024-02-07 14:28:17,134 INFO L76 edCorrectnessWitness]: Location invariant before [L754-L754] (-999 <= a) && (((((1016LL + (long long )a) + (long long )b >= 0LL && (982LL + (long long )a) - (long long )b >= 0LL) && -17 == b) && b == -17) || (31 == b && b == 31)) [2024-02-07 14:28:17,134 INFO L76 edCorrectnessWitness]: Location invariant before [L747-L747] (-999 <= x) && (-968 <= i) [2024-02-07 14:28:17,134 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] (-999 <= x) && (-968 <= z) [2024-02-07 14:28:17,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:28:17,371 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2024-02-07 14:28:17,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:28:17,568 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:28:17,577 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2024-02-07 14:28:17,589 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:28:17,589 WARN L423 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry [2024-02-07 14:28:17,590 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:28:17,590 WARN L423 MainDispatcher]: Unable to annotate y = __VERIFIER_nondet_int() with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:28:17,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:28:17,655 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:28:17,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17 WrapperNode [2024-02-07 14:28:17,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:28:17,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:28:17,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:28:17,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:28:17,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,691 INFO L138 Inliner]: procedures = 166, calls = 49, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 184 [2024-02-07 14:28:17,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:28:17,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:28:17,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:28:17,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:28:17,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,703 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,717 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 5, 5, 5, 1]. 28 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-02-07 14:28:17,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:28:17,750 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:28:17,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:28:17,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:28:17,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (1/1) ... [2024-02-07 14:28:17,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:28:17,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:28:17,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:28:17,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:28:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:28:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:28:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:28:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:28:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:28:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:28:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:28:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:28:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:28:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:28:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:28:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:28:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:28:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:28:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:28:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:28:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:28:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:28:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:28:17,860 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:28:18,001 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:28:18,003 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:28:18,267 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:28:18,267 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:28:18,420 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:28:18,420 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:28:18,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:28:18 BoogieIcfgContainer [2024-02-07 14:28:18,420 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:28:18,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:28:18,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:28:18,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:28:18,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:28:15" (1/4) ... [2024-02-07 14:28:18,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4803bc80 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:28:18, skipping insertion in model container [2024-02-07 14:28:18,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:28:17" (2/4) ... [2024-02-07 14:28:18,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4803bc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:28:18, skipping insertion in model container [2024-02-07 14:28:18,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:17" (3/4) ... [2024-02-07 14:28:18,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4803bc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:28:18, skipping insertion in model container [2024-02-07 14:28:18,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:28:18" (4/4) ... [2024-02-07 14:28:18,426 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-02-07 14:28:18,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:28:18,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-02-07 14:28:18,492 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:28:18,565 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:28:18,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 94 transitions, 192 flow [2024-02-07 14:28:18,639 INFO L124 PetriNetUnfolderBase]: 4/94 cut-off events. [2024-02-07 14:28:18,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:28:18,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 4/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 161 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2024-02-07 14:28:18,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 94 transitions, 192 flow [2024-02-07 14:28:18,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 92 transitions, 187 flow [2024-02-07 14:28:18,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:28:18,666 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;@73e3bb2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:28:18,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-02-07 14:28:18,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:28:18,672 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-02-07 14:28:18,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:28:18,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:18,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:18,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 14:28:18,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 686152796, now seen corresponding path program 1 times [2024-02-07 14:28:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095060376] [2024-02-07 14:28:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:18,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:28:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:18,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095060376] [2024-02-07 14:28:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095060376] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:18,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:18,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:28:18,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605986324] [2024-02-07 14:28:18,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:18,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:28:18,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:28:18,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:28:19,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 94 [2024-02-07 14:28:19,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:19,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:19,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 94 [2024-02-07 14:28:19,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:19,358 INFO L124 PetriNetUnfolderBase]: 563/1684 cut-off events. [2024-02-07 14:28:19,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:28:19,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2863 conditions, 1684 events. 563/1684 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11305 event pairs, 183 based on Foata normal form. 77/1603 useless extension candidates. Maximal degree in co-relation 2852. Up to 599 conditions per place. [2024-02-07 14:28:19,370 INFO L140 encePairwiseOnDemand]: 83/94 looper letters, 95 selfloop transitions, 5 changer transitions 2/143 dead transitions. [2024-02-07 14:28:19,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 143 transitions, 493 flow [2024-02-07 14:28:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:28:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:28:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 283 transitions. [2024-02-07 14:28:19,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526595744680851 [2024-02-07 14:28:19,381 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 187 flow. Second operand 4 states and 283 transitions. [2024-02-07 14:28:19,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 143 transitions, 493 flow [2024-02-07 14:28:19,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 143 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:28:19,387 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 203 flow [2024-02-07 14:28:19,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2024-02-07 14:28:19,391 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 2 predicate places. [2024-02-07 14:28:19,391 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 203 flow [2024-02-07 14:28:19,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:19,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:19,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:19,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:28:19,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 14:28:19,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1295463975, now seen corresponding path program 1 times [2024-02-07 14:28:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:19,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458883190] [2024-02-07 14:28:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:19,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:28:19,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:19,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458883190] [2024-02-07 14:28:19,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458883190] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:19,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:19,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:28:19,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337236381] [2024-02-07 14:28:19,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:19,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:28:19,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:19,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:28:19,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:28:19,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 94 [2024-02-07 14:28:19,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:19,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:19,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 94 [2024-02-07 14:28:19,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:19,618 INFO L124 PetriNetUnfolderBase]: 508/1603 cut-off events. [2024-02-07 14:28:19,619 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-02-07 14:28:19,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 1603 events. 508/1603 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10862 event pairs, 99 based on Foata normal form. 0/1475 useless extension candidates. Maximal degree in co-relation 2799. Up to 853 conditions per place. [2024-02-07 14:28:19,625 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 66 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-02-07 14:28:19,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 112 transitions, 388 flow [2024-02-07 14:28:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:28:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:28:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2024-02-07 14:28:19,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7340425531914894 [2024-02-07 14:28:19,627 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 203 flow. Second operand 3 states and 207 transitions. [2024-02-07 14:28:19,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 112 transitions, 388 flow [2024-02-07 14:28:19,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 112 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:28:19,630 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 204 flow [2024-02-07 14:28:19,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-02-07 14:28:19,631 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2024-02-07 14:28:19,631 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 204 flow [2024-02-07 14:28:19,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:19,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:19,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:19,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:28:19,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 14:28:19,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash -204099306, now seen corresponding path program 1 times [2024-02-07 14:28:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:19,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321115898] [2024-02-07 14:28:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:28:19,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:19,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321115898] [2024-02-07 14:28:19,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321115898] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:19,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:19,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:28:19,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899810115] [2024-02-07 14:28:19,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:19,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:28:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:28:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:28:19,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 94 [2024-02-07 14:28:19,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:19,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:19,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 94 [2024-02-07 14:28:19,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:19,897 INFO L124 PetriNetUnfolderBase]: 516/1565 cut-off events. [2024-02-07 14:28:19,898 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-02-07 14:28:19,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2793 conditions, 1565 events. 516/1565 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10341 event pairs, 85 based on Foata normal form. 15/1490 useless extension candidates. Maximal degree in co-relation 2779. Up to 823 conditions per place. [2024-02-07 14:28:19,904 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 85 selfloop transitions, 3 changer transitions 2/132 dead transitions. [2024-02-07 14:28:19,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 132 transitions, 474 flow [2024-02-07 14:28:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:28:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:28:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2024-02-07 14:28:19,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6941489361702128 [2024-02-07 14:28:19,907 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 204 flow. Second operand 4 states and 261 transitions. [2024-02-07 14:28:19,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 132 transitions, 474 flow [2024-02-07 14:28:19,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 132 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:28:19,912 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 208 flow [2024-02-07 14:28:19,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2024-02-07 14:28:19,914 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 4 predicate places. [2024-02-07 14:28:19,914 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 208 flow [2024-02-07 14:28:19,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:19,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:19,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:19,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:28:19,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 14:28:19,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1504678161, now seen corresponding path program 1 times [2024-02-07 14:28:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:19,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091927782] [2024-02-07 14:28:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:28:20,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:20,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091927782] [2024-02-07 14:28:20,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091927782] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:20,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:20,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:28:20,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103696193] [2024-02-07 14:28:20,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:20,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:28:20,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:28:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:28:20,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 94 [2024-02-07 14:28:20,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:20,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:20,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 94 [2024-02-07 14:28:20,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:20,281 INFO L124 PetriNetUnfolderBase]: 696/2090 cut-off events. [2024-02-07 14:28:20,281 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-02-07 14:28:20,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3782 conditions, 2090 events. 696/2090 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14713 event pairs, 360 based on Foata normal form. 14/1989 useless extension candidates. Maximal degree in co-relation 3767. Up to 1037 conditions per place. [2024-02-07 14:28:20,289 INFO L140 encePairwiseOnDemand]: 87/94 looper letters, 97 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2024-02-07 14:28:20,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 524 flow [2024-02-07 14:28:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:28:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:28:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-02-07 14:28:20,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-02-07 14:28:20,291 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 208 flow. Second operand 5 states and 310 transitions. [2024-02-07 14:28:20,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 524 flow [2024-02-07 14:28:20,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 139 transitions, 516 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:28:20,295 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 243 flow [2024-02-07 14:28:20,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2024-02-07 14:28:20,296 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2024-02-07 14:28:20,297 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 243 flow [2024-02-07 14:28:20,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:20,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:20,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:20,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:28:20,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 14:28:20,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:20,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2032110683, now seen corresponding path program 1 times [2024-02-07 14:28:20,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:20,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932032735] [2024-02-07 14:28:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:28:20,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932032735] [2024-02-07 14:28:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932032735] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:20,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:20,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:28:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84391445] [2024-02-07 14:28:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:20,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:28:20,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:28:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:28:20,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 94 [2024-02-07 14:28:20,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:20,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:20,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 94 [2024-02-07 14:28:20,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:20,481 INFO L124 PetriNetUnfolderBase]: 205/693 cut-off events. [2024-02-07 14:28:20,482 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-02-07 14:28:20,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 693 events. 205/693 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3895 event pairs, 115 based on Foata normal form. 49/711 useless extension candidates. Maximal degree in co-relation 1320. Up to 287 conditions per place. [2024-02-07 14:28:20,484 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 53 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-02-07 14:28:20,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 331 flow [2024-02-07 14:28:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:28:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:28:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-02-07 14:28:20,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601063829787234 [2024-02-07 14:28:20,485 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 243 flow. Second operand 4 states and 226 transitions. [2024-02-07 14:28:20,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 331 flow [2024-02-07 14:28:20,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 324 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:28:20,487 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 172 flow [2024-02-07 14:28:20,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-02-07 14:28:20,488 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -17 predicate places. [2024-02-07 14:28:20,488 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 172 flow [2024-02-07 14:28:20,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:20,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:20,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:20,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:28:20,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 14:28:20,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:20,489 INFO L85 PathProgramCache]: Analyzing trace with hash -599616663, now seen corresponding path program 1 times [2024-02-07 14:28:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691003288] [2024-02-07 14:28:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:20,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:28:20,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:20,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691003288] [2024-02-07 14:28:20,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691003288] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:20,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:20,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:28:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667089572] [2024-02-07 14:28:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:20,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:28:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:28:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:28:20,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 94 [2024-02-07 14:28:20,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:20,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:20,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 94 [2024-02-07 14:28:20,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:20,748 INFO L124 PetriNetUnfolderBase]: 222/718 cut-off events. [2024-02-07 14:28:20,748 INFO L125 PetriNetUnfolderBase]: For 158/164 co-relation queries the response was YES. [2024-02-07 14:28:20,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 718 events. 222/718 cut-off events. For 158/164 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3871 event pairs, 73 based on Foata normal form. 6/687 useless extension candidates. Maximal degree in co-relation 1419. Up to 160 conditions per place. [2024-02-07 14:28:20,751 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 85 selfloop transitions, 7 changer transitions 0/117 dead transitions. [2024-02-07 14:28:20,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 476 flow [2024-02-07 14:28:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:28:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:28:20,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 368 transitions. [2024-02-07 14:28:20,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2024-02-07 14:28:20,753 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 172 flow. Second operand 7 states and 368 transitions. [2024-02-07 14:28:20,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 476 flow [2024-02-07 14:28:20,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 471 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:28:20,756 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 207 flow [2024-02-07 14:28:20,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=207, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-02-07 14:28:20,756 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -11 predicate places. [2024-02-07 14:28:20,757 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 207 flow [2024-02-07 14:28:20,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:28:20,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:20,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:20,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:28:20,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 14:28:20,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1429078854, now seen corresponding path program 1 times [2024-02-07 14:28:20,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:20,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823382055] [2024-02-07 14:28:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:20,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:28:20,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:28:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:28:20,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:28:20,794 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:28:20,795 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 38 remaining) [2024-02-07 14:28:20,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 38 remaining) [2024-02-07 14:28:20,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 38 remaining) [2024-02-07 14:28:20,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 38 remaining) [2024-02-07 14:28:20,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 38 remaining) [2024-02-07 14:28:20,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 38 remaining) [2024-02-07 14:28:20,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 38 remaining) [2024-02-07 14:28:20,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 38 remaining) [2024-02-07 14:28:20,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 38 remaining) [2024-02-07 14:28:20,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 38 remaining) [2024-02-07 14:28:20,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 38 remaining) [2024-02-07 14:28:20,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 38 remaining) [2024-02-07 14:28:20,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 38 remaining) [2024-02-07 14:28:20,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONERROR_FUNCTION (24 of 38 remaining) [2024-02-07 14:28:20,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 38 remaining) [2024-02-07 14:28:20,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (22 of 38 remaining) [2024-02-07 14:28:20,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 38 remaining) [2024-02-07 14:28:20,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 38 remaining) [2024-02-07 14:28:20,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 38 remaining) [2024-02-07 14:28:20,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 38 remaining) [2024-02-07 14:28:20,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 38 remaining) [2024-02-07 14:28:20,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 38 remaining) [2024-02-07 14:28:20,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12ASSERT_VIOLATIONERROR_FUNCTION (15 of 38 remaining) [2024-02-07 14:28:20,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 38 remaining) [2024-02-07 14:28:20,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 38 remaining) [2024-02-07 14:28:20,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 38 remaining) [2024-02-07 14:28:20,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 38 remaining) [2024-02-07 14:28:20,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONERROR_FUNCTION (10 of 38 remaining) [2024-02-07 14:28:20,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 38 remaining) [2024-02-07 14:28:20,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (8 of 38 remaining) [2024-02-07 14:28:20,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 38 remaining) [2024-02-07 14:28:20,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 38 remaining) [2024-02-07 14:28:20,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 38 remaining) [2024-02-07 14:28:20,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 38 remaining) [2024-02-07 14:28:20,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 38 remaining) [2024-02-07 14:28:20,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 38 remaining) [2024-02-07 14:28:20,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12ASSERT_VIOLATIONERROR_FUNCTION (1 of 38 remaining) [2024-02-07 14:28:20,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 38 remaining) [2024-02-07 14:28:20,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:28:20,802 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:20,807 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:28:20,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:28:20,829 INFO L503 ceAbstractionStarter]: Automizer considered 20 witness invariants [2024-02-07 14:28:20,830 INFO L504 ceAbstractionStarter]: WitnessConsidered=20 [2024-02-07 14:28:20,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:28:20 BasicIcfg [2024-02-07 14:28:20,830 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:28:20,831 INFO L158 Benchmark]: Toolchain (without parser) took 3769.08ms. Allocated memory was 144.7MB in the beginning and 276.8MB in the end (delta: 132.1MB). Free memory was 69.8MB in the beginning and 208.5MB in the end (delta: -138.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:28:20,832 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 144.7MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:28:20,833 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 144.7MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:28:20,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.90ms. Allocated memory was 144.7MB in the beginning and 182.5MB in the end (delta: 37.7MB). Free memory was 69.6MB in the beginning and 138.7MB in the end (delta: -69.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-02-07 14:28:20,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.81ms. Allocated memory is still 182.5MB. Free memory was 138.7MB in the beginning and 135.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:28:20,833 INFO L158 Benchmark]: Boogie Preprocessor took 58.01ms. Allocated memory is still 182.5MB. Free memory was 135.8MB in the beginning and 133.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:28:20,835 INFO L158 Benchmark]: RCFGBuilder took 670.31ms. Allocated memory is still 182.5MB. Free memory was 133.3MB in the beginning and 145.9MB in the end (delta: -12.6MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2024-02-07 14:28:20,835 INFO L158 Benchmark]: TraceAbstraction took 2408.67ms. Allocated memory was 182.5MB in the beginning and 276.8MB in the end (delta: 94.4MB). Free memory was 144.8MB in the beginning and 208.5MB in the end (delta: -63.6MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2024-02-07 14:28:20,836 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 0.17ms. Allocated memory is still 144.7MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 144.7MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.90ms. Allocated memory was 144.7MB in the beginning and 182.5MB in the end (delta: 37.7MB). Free memory was 69.6MB in the beginning and 138.7MB in the end (delta: -69.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.81ms. Allocated memory is still 182.5MB. Free memory was 138.7MB in the beginning and 135.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.01ms. Allocated memory is still 182.5MB. Free memory was 135.8MB in the beginning and 133.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 670.31ms. Allocated memory is still 182.5MB. Free memory was 133.3MB in the beginning and 145.9MB in the end (delta: -12.6MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2408.67ms. Allocated memory was 182.5MB in the beginning and 276.8MB in the end (delta: 94.4MB). Free memory was 144.8MB in the beginning and 208.5MB in the end (delta: -63.6MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 753]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L703] 0 int g = 0; [L704] 0 int h = 0; [L705] 0 int i = 0; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L731] 0 int x = __VERIFIER_nondet_int(); [L732] COND TRUE 0 x > -1000 [L733] 0 pthread_t id; [L734] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, id={6:0}, x=0] [L737] 0 i = 11 VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=11, id={6:0}, x=0] [L738] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[x]],BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[968]],IdentifierExpression[i]]]]] [L738] 0 g = x VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=11, id={6:0}, x=0] [L739] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[g]],BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[x]]]]] [L739] CALL 0 plus(x, - 17) [L752] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[a]],BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,IntegerLiteral[1016LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]],BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,BinaryExpression[ARITHPLUS,IntegerLiteral[982LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]],BinaryExpression[COMPEQ,UnaryExpression[MINUS,IntegerLiteral[17]],IdentifierExpression[b]]],BinaryExpression[COMPEQ,IdentifierExpression[b],UnaryExpression[MINUS,IntegerLiteral[17]]]]]] [L752] CALL 0 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L21] COND FALSE 0 !(!cond) [L752] RET 0 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L753] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[a]],BinaryExpression[COMPEQ,IntegerLiteral[31],IdentifierExpression[b]]],BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[31]]]]] VAL [A={3:0}, B={4:0}, C={5:0}, \old(a)=0, \old(b)=-17, a=0, b=-17, g=0, h=0, i=11] - UnprovableResult [Line: 738]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 754]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 753]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 754]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 141 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 513 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 457 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 837 IncrementalHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 23 mSDtfsCounter, 837 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-07 14:28:20,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE