./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28-race_reach_73-funloop_hard_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/28-race_reach_73-funloop_hard_racefree.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28-race_reach_73-funloop_hard_racefree.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-?-80b1b13-m [2024-01-31 16:45:42,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:45:42,733 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:45:42,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:45:42,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:45:42,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:45:42,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:45:42,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:45:42,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:45:42,776 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:45:42,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:45:42,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:45:42,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:45:42,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:45:42,779 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:45:42,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:45:42,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:45:42,780 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:45:42,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:45:42,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:45:42,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:45:42,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:45:42,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:45:42,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:45:42,783 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:45:42,783 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:45:42,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:45:42,784 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:45:42,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:45:42,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:45:42,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:45:42,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:45:42,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:42,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:45:42,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:45:42,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:45:42,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:45:42,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:45:42,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:45:42,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:45:42,788 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:45:42,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:45:42,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:45:42,789 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:45:43,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:45:43,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:45:43,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:45:43,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:45:43,089 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:45:43,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-01-31 16:45:44,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:45:44,579 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:45:44,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-01-31 16:45:44,610 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3278f2fa2/62d299edd9d8426dbf0e964139b94568/FLAG34decd9be [2024-01-31 16:45:44,625 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3278f2fa2/62d299edd9d8426dbf0e964139b94568 [2024-01-31 16:45:44,628 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:45:44,628 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:45:44,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28-race_reach_73-funloop_hard_racefree.yml/witness.yml [2024-01-31 16:45:44,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:45:44,754 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:45:44,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:44,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:45:44,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:45:44,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:44" (1/2) ... [2024-01-31 16:45:44,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397c13e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:44, skipping insertion in model container [2024-01-31 16:45:44,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:44" (1/2) ... [2024-01-31 16:45:44,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34d769a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:44, skipping insertion in model container [2024-01-31 16:45:44,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:44" (2/2) ... [2024-01-31 16:45:44,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397c13e8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:44, skipping insertion in model container [2024-01-31 16:45:44,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:44" (2/2) ... [2024-01-31 16:45:44,765 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:45:44,945 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:45:44,947 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 16:45:44,947 INFO L98 nessWitnessExtractor]: Location invariant before [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 16:45:44,947 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 16:45:44,947 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 16:45:44,947 INFO L98 nessWitnessExtractor]: Location invariant before [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 16:45:44,948 INFO L98 nessWitnessExtractor]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 16:45:44,948 INFO L98 nessWitnessExtractor]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 16:45:44,949 INFO L98 nessWitnessExtractor]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 16:45:44,949 INFO L98 nessWitnessExtractor]: Location invariant before [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 16:45:44,949 INFO L98 nessWitnessExtractor]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 16:45:44,949 INFO L98 nessWitnessExtractor]: Location invariant before [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 16:45:44,949 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 16:45:45,001 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:45:45,409 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/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2024-01-31 16:45:45,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:45,472 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:45:45,503 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/28-race_reach_73-funloop_hard_racefree.i[41323,41336] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:45:45,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:45,758 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:45:45,758 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45 WrapperNode [2024-01-31 16:45:45,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:45,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:45,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:45:45,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:45:45,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,854 INFO L138 Inliner]: procedures = 272, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 303 [2024-01-31 16:45:45,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:45,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:45:45,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:45:45,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:45:45,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,903 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 5, 16, 2]. 64 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 8 writes are split as follows [0, 0, 7, 1]. [2024-01-31 16:45:45,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:45:45,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:45:45,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:45:45,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:45:45,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (1/1) ... [2024-01-31 16:45:45,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:45,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:46,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:45:46,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:45:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:45:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:45:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 16:45:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:45:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:45:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:45:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:45:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:45:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:45:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:45:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:45:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 16:45:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:45:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-31 16:45:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-31 16:45:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:45:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:45:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:45:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:45:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:45:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:45:46,206 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:45:46,387 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:45:46,390 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:45:46,946 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:45:46,946 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:45:47,105 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:45:47,106 INFO L320 CfgBuilder]: Removed 35 assume(true) statements. [2024-01-31 16:45:47,106 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:47 BoogieIcfgContainer [2024-01-31 16:45:47,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:45:47,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:45:47,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:45:47,111 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:45:47,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:45:44" (1/4) ... [2024-01-31 16:45:47,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5730ef22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:45:47, skipping insertion in model container [2024-01-31 16:45:47,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:44" (2/4) ... [2024-01-31 16:45:47,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5730ef22 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:45:47, skipping insertion in model container [2024-01-31 16:45:47,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45" (3/4) ... [2024-01-31 16:45:47,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5730ef22 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:45:47, skipping insertion in model container [2024-01-31 16:45:47,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:47" (4/4) ... [2024-01-31 16:45:47,114 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-01-31 16:45:47,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:45:47,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-01-31 16:45:47,131 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:45:47,224 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-31 16:45:47,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 170 transitions, 347 flow [2024-01-31 16:45:47,358 INFO L124 PetriNetUnfolderBase]: 65/278 cut-off events. [2024-01-31 16:45:47,358 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 16:45:47,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 278 events. 65/278 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1542 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2024-01-31 16:45:47,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 170 transitions, 347 flow [2024-01-31 16:45:47,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 168 transitions, 340 flow [2024-01-31 16:45:47,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:45:47,402 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;@7588576f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:45:47,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-01-31 16:45:47,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:45:47,413 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-01-31 16:45:47,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:45:47,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:47,414 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-01-31 16:45:47,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:45:47,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:47,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1131783140, now seen corresponding path program 1 times [2024-01-31 16:45:47,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863120158] [2024-01-31 16:45:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:45:47,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:47,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863120158] [2024-01-31 16:45:47,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863120158] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:45:47,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:45:47,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:45:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681996496] [2024-01-31 16:45:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:45:47,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:45:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:47,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:45:47,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:45:47,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 170 [2024-01-31 16:45:47,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 168 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:47,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:47,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 170 [2024-01-31 16:45:47,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:48,157 INFO L124 PetriNetUnfolderBase]: 716/2168 cut-off events. [2024-01-31 16:45:48,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:45:48,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3538 conditions, 2168 events. 716/2168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16338 event pairs, 609 based on Foata normal form. 434/2393 useless extension candidates. Maximal degree in co-relation 3438. Up to 1365 conditions per place. [2024-01-31 16:45:48,173 INFO L140 encePairwiseOnDemand]: 139/170 looper letters, 55 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-01-31 16:45:48,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 328 flow [2024-01-31 16:45:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:45:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:45:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-01-31 16:45:48,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2024-01-31 16:45:48,194 INFO L175 Difference]: Start difference. First operand has 132 places, 168 transitions, 340 flow. Second operand 3 states and 278 transitions. [2024-01-31 16:45:48,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 328 flow [2024-01-31 16:45:48,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:45:48,200 INFO L231 Difference]: Finished difference. Result has 105 places, 105 transitions, 224 flow [2024-01-31 16:45:48,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=105, PETRI_TRANSITIONS=105} [2024-01-31 16:45:48,206 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -27 predicate places. [2024-01-31 16:45:48,206 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 105 transitions, 224 flow [2024-01-31 16:45:48,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:48,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:48,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:45:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:45:48,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:45:48,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1394678718, now seen corresponding path program 1 times [2024-01-31 16:45:48,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:48,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543297853] [2024-01-31 16:45:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:45:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543297853] [2024-01-31 16:45:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543297853] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:45:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263321649] [2024-01-31 16:45:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:48,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:45:48,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:48,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:45:48,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:45:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:48,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:45:48,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:45:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:45:48,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:45:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:45:48,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263321649] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:45:48,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:45:48,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-31 16:45:48,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758334019] [2024-01-31 16:45:48,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:45:48,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:45:48,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:48,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:45:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:45:48,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 170 [2024-01-31 16:45:48,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 105 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:48,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:48,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 170 [2024-01-31 16:45:48,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:48,948 INFO L124 PetriNetUnfolderBase]: 716/2171 cut-off events. [2024-01-31 16:45:48,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:45:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3554 conditions, 2171 events. 716/2171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16330 event pairs, 609 based on Foata normal form. 0/1962 useless extension candidates. Maximal degree in co-relation 3542. Up to 1365 conditions per place. [2024-01-31 16:45:48,960 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 55 selfloop transitions, 5 changer transitions 0/108 dead transitions. [2024-01-31 16:45:48,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 108 transitions, 356 flow [2024-01-31 16:45:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:45:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:45:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 447 transitions. [2024-01-31 16:45:48,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2024-01-31 16:45:48,963 INFO L175 Difference]: Start difference. First operand has 105 places, 105 transitions, 224 flow. Second operand 6 states and 447 transitions. [2024-01-31 16:45:48,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 108 transitions, 356 flow [2024-01-31 16:45:48,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 352 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:45:48,966 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 256 flow [2024-01-31 16:45:48,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2024-01-31 16:45:48,967 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -20 predicate places. [2024-01-31 16:45:48,967 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 256 flow [2024-01-31 16:45:48,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:48,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:48,968 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-01-31 16:45:48,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 16:45:49,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:45:49,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:45:49,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash -202257564, now seen corresponding path program 2 times [2024-01-31 16:45:49,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:49,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225383514] [2024-01-31 16:45:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:45:49,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:49,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225383514] [2024-01-31 16:45:49,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225383514] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:45:49,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571576370] [2024-01-31 16:45:49,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:45:49,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:45:49,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:49,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:45:49,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 16:45:49,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:45:49,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:45:49,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 16:45:49,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:45:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:45:49,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:45:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:45:49,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571576370] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:45:49,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:45:49,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-31 16:45:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689232489] [2024-01-31 16:45:49,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:45:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 16:45:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 16:45:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-01-31 16:45:49,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 170 [2024-01-31 16:45:49,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 256 flow. Second operand has 13 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:49,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:49,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 170 [2024-01-31 16:45:49,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:49,854 INFO L124 PetriNetUnfolderBase]: 716/2177 cut-off events. [2024-01-31 16:45:49,855 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-31 16:45:49,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 2177 events. 716/2177 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16323 event pairs, 609 based on Foata normal form. 6/1975 useless extension candidates. Maximal degree in co-relation 3533. Up to 1365 conditions per place. [2024-01-31 16:45:49,867 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 55 selfloop transitions, 11 changer transitions 0/114 dead transitions. [2024-01-31 16:45:49,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 424 flow [2024-01-31 16:45:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:45:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:45:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 840 transitions. [2024-01-31 16:45:49,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-01-31 16:45:49,870 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 256 flow. Second operand 12 states and 840 transitions. [2024-01-31 16:45:49,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 424 flow [2024-01-31 16:45:49,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 114 transitions, 410 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 16:45:49,875 INFO L231 Difference]: Finished difference. Result has 128 places, 114 transitions, 326 flow [2024-01-31 16:45:49,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=326, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2024-01-31 16:45:49,876 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2024-01-31 16:45:49,877 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 326 flow [2024-01-31 16:45:49,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:49,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:49,878 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-01-31 16:45:49,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 16:45:50,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-01-31 16:45:50,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 16:45:50,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash -598835548, now seen corresponding path program 3 times [2024-01-31 16:45:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:50,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109616301] [2024-01-31 16:45:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:50,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:45:50,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:45:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:45:50,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:45:50,148 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:45:50,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-01-31 16:45:50,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 29 remaining) [2024-01-31 16:45:50,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 29 remaining) [2024-01-31 16:45:50,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 29 remaining) [2024-01-31 16:45:50,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (24 of 29 remaining) [2024-01-31 16:45:50,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 29 remaining) [2024-01-31 16:45:50,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (22 of 29 remaining) [2024-01-31 16:45:50,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 29 remaining) [2024-01-31 16:45:50,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 29 remaining) [2024-01-31 16:45:50,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 29 remaining) [2024-01-31 16:45:50,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 29 remaining) [2024-01-31 16:45:50,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 29 remaining) [2024-01-31 16:45:50,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 29 remaining) [2024-01-31 16:45:50,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 29 remaining) [2024-01-31 16:45:50,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 29 remaining) [2024-01-31 16:45:50,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 29 remaining) [2024-01-31 16:45:50,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 29 remaining) [2024-01-31 16:45:50,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (11 of 29 remaining) [2024-01-31 16:45:50,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 29 remaining) [2024-01-31 16:45:50,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 29 remaining) [2024-01-31 16:45:50,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 29 remaining) [2024-01-31 16:45:50,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 29 remaining) [2024-01-31 16:45:50,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 29 remaining) [2024-01-31 16:45:50,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 29 remaining) [2024-01-31 16:45:50,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 29 remaining) [2024-01-31 16:45:50,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 29 remaining) [2024-01-31 16:45:50,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 29 remaining) [2024-01-31 16:45:50,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 29 remaining) [2024-01-31 16:45:50,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 29 remaining) [2024-01-31 16:45:50,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:45:50,161 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-01-31 16:45:50,164 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:45:50,164 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:45:50,222 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 16:45:50,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 226 transitions, 468 flow [2024-01-31 16:45:50,277 INFO L124 PetriNetUnfolderBase]: 105/449 cut-off events. [2024-01-31 16:45:50,278 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:45:50,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 449 events. 105/449 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2831 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 280. Up to 12 conditions per place. [2024-01-31 16:45:50,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 226 transitions, 468 flow [2024-01-31 16:45:50,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 226 transitions, 468 flow [2024-01-31 16:45:50,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:45:50,289 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;@7588576f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:45:50,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-01-31 16:45:50,295 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:45:50,295 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2024-01-31 16:45:50,295 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:45:50,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:50,296 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-01-31 16:45:50,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-01-31 16:45:50,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:50,296 INFO L85 PathProgramCache]: Analyzing trace with hash 57529438, now seen corresponding path program 1 times [2024-01-31 16:45:50,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:50,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157768309] [2024-01-31 16:45:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:50,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:45:50,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:50,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157768309] [2024-01-31 16:45:50,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157768309] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:45:50,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:45:50,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:45:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060000930] [2024-01-31 16:45:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:45:50,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:45:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:45:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:45:50,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 226 [2024-01-31 16:45:50,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 226 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:50,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:50,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 226 [2024-01-31 16:45:50,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:56,633 INFO L124 PetriNetUnfolderBase]: 31582/65036 cut-off events. [2024-01-31 16:45:56,633 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-01-31 16:45:56,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110792 conditions, 65036 events. 31582/65036 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 690471 event pairs, 27867 based on Foata normal form. 14616/73146 useless extension candidates. Maximal degree in co-relation 92905. Up to 45684 conditions per place. [2024-01-31 16:45:57,186 INFO L140 encePairwiseOnDemand]: 184/226 looper letters, 78 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2024-01-31 16:45:57,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 149 transitions, 468 flow [2024-01-31 16:45:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:45:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:45:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2024-01-31 16:45:57,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5530973451327433 [2024-01-31 16:45:57,190 INFO L175 Difference]: Start difference. First operand has 177 places, 226 transitions, 468 flow. Second operand 3 states and 375 transitions. [2024-01-31 16:45:57,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 149 transitions, 468 flow [2024-01-31 16:45:57,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 149 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:45:57,197 INFO L231 Difference]: Finished difference. Result has 149 places, 149 transitions, 318 flow [2024-01-31 16:45:57,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=149, PETRI_TRANSITIONS=149} [2024-01-31 16:45:57,199 INFO L281 CegarLoopForPetriNet]: 177 programPoint places, -28 predicate places. [2024-01-31 16:45:57,199 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 149 transitions, 318 flow [2024-01-31 16:45:57,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:57,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:57,200 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:45:57,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:45:57,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-01-31 16:45:57,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:57,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1150098850, now seen corresponding path program 1 times [2024-01-31 16:45:57,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:57,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984055658] [2024-01-31 16:45:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:57,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:45:57,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984055658] [2024-01-31 16:45:57,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984055658] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:45:57,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841772991] [2024-01-31 16:45:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:57,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:45:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:57,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:45:57,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 16:45:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:57,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:45:57,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:45:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:45:57,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:45:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:45:57,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841772991] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:45:57,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:45:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-31 16:45:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586848486] [2024-01-31 16:45:57,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:45:57,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:45:57,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:45:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:45:57,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 226 [2024-01-31 16:45:57,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 149 transitions, 318 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:45:57,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:57,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 226 [2024-01-31 16:45:57,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:02,795 INFO L124 PetriNetUnfolderBase]: 31582/65039 cut-off events. [2024-01-31 16:46:02,796 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-01-31 16:46:02,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110808 conditions, 65039 events. 31582/65039 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 690598 event pairs, 27867 based on Foata normal form. 0/58533 useless extension candidates. Maximal degree in co-relation 110795. Up to 45684 conditions per place. [2024-01-31 16:46:03,172 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 78 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2024-01-31 16:46:03,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 152 transitions, 496 flow [2024-01-31 16:46:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:46:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:46:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 596 transitions. [2024-01-31 16:46:03,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43952802359882004 [2024-01-31 16:46:03,179 INFO L175 Difference]: Start difference. First operand has 149 places, 149 transitions, 318 flow. Second operand 6 states and 596 transitions. [2024-01-31 16:46:03,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 152 transitions, 496 flow [2024-01-31 16:46:03,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 152 transitions, 492 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:03,184 INFO L231 Difference]: Finished difference. Result has 156 places, 152 transitions, 350 flow [2024-01-31 16:46:03,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=156, PETRI_TRANSITIONS=152} [2024-01-31 16:46:03,187 INFO L281 CegarLoopForPetriNet]: 177 programPoint places, -21 predicate places. [2024-01-31 16:46:03,187 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 152 transitions, 350 flow [2024-01-31 16:46:03,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:03,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:03,188 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-01-31 16:46:03,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-01-31 16:46:03,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:03,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-01-31 16:46:03,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash -174586530, now seen corresponding path program 2 times [2024-01-31 16:46:03,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:03,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802754096] [2024-01-31 16:46:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:03,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:46:03,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:03,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802754096] [2024-01-31 16:46:03,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802754096] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989452205] [2024-01-31 16:46:03,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:46:03,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:03,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:03,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:03,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 16:46:03,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:46:03,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:46:03,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 16:46:03,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:46:03,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:46:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989452205] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:03,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-31 16:46:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016084737] [2024-01-31 16:46:03,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:03,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 16:46:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 16:46:03,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-01-31 16:46:03,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 226 [2024-01-31 16:46:03,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 152 transitions, 350 flow. Second operand has 13 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:03,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:03,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 226 [2024-01-31 16:46:03,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:09,300 INFO L124 PetriNetUnfolderBase]: 31582/65045 cut-off events. [2024-01-31 16:46:09,300 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-01-31 16:46:09,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110845 conditions, 65045 events. 31582/65045 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 690568 event pairs, 27867 based on Foata normal form. 6/58546 useless extension candidates. Maximal degree in co-relation 110786. Up to 45684 conditions per place. [2024-01-31 16:46:09,709 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 78 selfloop transitions, 11 changer transitions 0/158 dead transitions. [2024-01-31 16:46:09,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 158 transitions, 564 flow [2024-01-31 16:46:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:46:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:46:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1115 transitions. [2024-01-31 16:46:09,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111356932153392 [2024-01-31 16:46:09,715 INFO L175 Difference]: Start difference. First operand has 156 places, 152 transitions, 350 flow. Second operand 12 states and 1115 transitions. [2024-01-31 16:46:09,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 158 transitions, 564 flow [2024-01-31 16:46:09,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 158 transitions, 550 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:09,725 INFO L231 Difference]: Finished difference. Result has 172 places, 158 transitions, 420 flow [2024-01-31 16:46:09,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=420, PETRI_PLACES=172, PETRI_TRANSITIONS=158} [2024-01-31 16:46:09,727 INFO L281 CegarLoopForPetriNet]: 177 programPoint places, -5 predicate places. [2024-01-31 16:46:09,727 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 158 transitions, 420 flow [2024-01-31 16:46:09,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:09,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:09,728 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-01-31 16:46:09,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:09,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:09,944 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-01-31 16:46:09,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1941593822, now seen corresponding path program 3 times [2024-01-31 16:46:09,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:09,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601601324] [2024-01-31 16:46:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:09,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:46:09,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:46:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:46:10,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:46:10,018 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:46:10,018 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2024-01-31 16:46:10,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 36 remaining) [2024-01-31 16:46:10,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 36 remaining) [2024-01-31 16:46:10,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 36 remaining) [2024-01-31 16:46:10,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (31 of 36 remaining) [2024-01-31 16:46:10,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 36 remaining) [2024-01-31 16:46:10,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (29 of 36 remaining) [2024-01-31 16:46:10,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 36 remaining) [2024-01-31 16:46:10,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 36 remaining) [2024-01-31 16:46:10,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 36 remaining) [2024-01-31 16:46:10,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 36 remaining) [2024-01-31 16:46:10,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 36 remaining) [2024-01-31 16:46:10,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 36 remaining) [2024-01-31 16:46:10,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 36 remaining) [2024-01-31 16:46:10,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 36 remaining) [2024-01-31 16:46:10,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 36 remaining) [2024-01-31 16:46:10,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 36 remaining) [2024-01-31 16:46:10,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 36 remaining) [2024-01-31 16:46:10,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 36 remaining) [2024-01-31 16:46:10,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 36 remaining) [2024-01-31 16:46:10,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 36 remaining) [2024-01-31 16:46:10,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 36 remaining) [2024-01-31 16:46:10,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 36 remaining) [2024-01-31 16:46:10,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 36 remaining) [2024-01-31 16:46:10,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (11 of 36 remaining) [2024-01-31 16:46:10,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 36 remaining) [2024-01-31 16:46:10,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 36 remaining) [2024-01-31 16:46:10,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 36 remaining) [2024-01-31 16:46:10,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 36 remaining) [2024-01-31 16:46:10,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 36 remaining) [2024-01-31 16:46:10,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 36 remaining) [2024-01-31 16:46:10,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 36 remaining) [2024-01-31 16:46:10,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 36 remaining) [2024-01-31 16:46:10,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 36 remaining) [2024-01-31 16:46:10,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 36 remaining) [2024-01-31 16:46:10,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 36 remaining) [2024-01-31 16:46:10,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:46:10,025 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-01-31 16:46:10,027 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:46:10,027 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 16:46:10,112 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:46:10,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 282 transitions, 591 flow [2024-01-31 16:46:10,170 INFO L124 PetriNetUnfolderBase]: 148/631 cut-off events. [2024-01-31 16:46:10,170 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-31 16:46:10,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 631 events. 148/631 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4234 event pairs, 1 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 458. Up to 16 conditions per place. [2024-01-31 16:46:10,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 282 transitions, 591 flow [2024-01-31 16:46:10,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 282 transitions, 591 flow [2024-01-31 16:46:10,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:46:10,184 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;@7588576f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:46:10,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-01-31 16:46:10,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:46:10,190 INFO L124 PetriNetUnfolderBase]: 10/74 cut-off events. [2024-01-31 16:46:10,190 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:46:10,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:10,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:10,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-01-31 16:46:10,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash 743893151, now seen corresponding path program 1 times [2024-01-31 16:46:10,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:10,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120833041] [2024-01-31 16:46:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:10,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:10,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120833041] [2024-01-31 16:46:10,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120833041] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:10,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:10,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:46:10,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44699524] [2024-01-31 16:46:10,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:10,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:46:10,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:46:10,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:46:10,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 282 [2024-01-31 16:46:10,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 282 transitions, 591 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:10,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:10,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 282 [2024-01-31 16:46:10,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand