./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_42-trylock2_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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_42-trylock2_racefree.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_42-trylock2_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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:06:47,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:06:47,717 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:06:47,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:06:47,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:06:47,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:06:47,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:06:47,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:06:47,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:06:47,751 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:06:47,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:06:47,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:06:47,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:06:47,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:06:47,754 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:06:47,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:06:47,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:06:47,755 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:06:47,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:06:47,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:06:47,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:06:47,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:06:47,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:06:47,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:06:47,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:06:47,756 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:06:47,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:06:47,757 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:06:47,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:06:47,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:06:47,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:06:47,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:06:47,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:06:47,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:06:47,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:06:47,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:06:47,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:06:47,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:06:47,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:06:47,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:06:47,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:06:47,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:06:47,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:06:47,761 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:06:47,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:06:47,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:06:48,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:06:48,001 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:06:48,001 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:06:48,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_42-trylock2_racefree.yml/witness.yml [2024-02-07 19:06:48,109 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:06:48,109 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:06:48,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-02-07 19:06:49,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:06:49,366 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:06:49,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-02-07 19:06:49,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36b1e320/e5346e015a824493887704fa8216eaed/FLAG4e8411128 [2024-02-07 19:06:49,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36b1e320/e5346e015a824493887704fa8216eaed [2024-02-07 19:06:49,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:06:49,395 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:06:49,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:06:49,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:06:49,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:06:49,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:06:48" (1/2) ... [2024-02-07 19:06:49,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fd4760 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:06:49, skipping insertion in model container [2024-02-07 19:06:49,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:06:48" (1/2) ... [2024-02-07 19:06:49,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7923a7cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:06:49, skipping insertion in model container [2024-02-07 19:06:49,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:06:49" (2/2) ... [2024-02-07 19:06:49,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fd4760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49, skipping insertion in model container [2024-02-07 19:06:49,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:06:49" (2/2) ... [2024-02-07 19:06:49,405 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:06:49,446 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:06:49,447 INFO L76 edCorrectnessWitness]: Location invariant after [L722-L722] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:06:49,447 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] g1 == 0 [2024-02-07 19:06:49,448 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] g2 == 0 [2024-02-07 19:06:49,448 INFO L76 edCorrectnessWitness]: Location invariant before [L718-L718] g2 == 0 [2024-02-07 19:06:49,448 INFO L76 edCorrectnessWitness]: Location invariant after [L720-L720] g1 == 0 [2024-02-07 19:06:49,448 INFO L76 edCorrectnessWitness]: Location invariant after [L705-L705] g2 == 0 [2024-02-07 19:06:49,448 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] g2 == 1 [2024-02-07 19:06:49,448 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g1 == 0 [2024-02-07 19:06:49,448 INFO L76 edCorrectnessWitness]: Location invariant after [L705-L705] g2 == 1 [2024-02-07 19:06:49,449 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] g1 == 0 [2024-02-07 19:06:49,449 INFO L76 edCorrectnessWitness]: Location invariant before [L722-L722] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:06:49,449 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] g2 == 0 [2024-02-07 19:06:49,449 INFO L76 edCorrectnessWitness]: Location invariant after [L705-L705] g2 == 1 [2024-02-07 19:06:49,449 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g1 == 0 [2024-02-07 19:06:49,449 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] g1 == 1 [2024-02-07 19:06:49,449 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g1 == 1 [2024-02-07 19:06:49,450 INFO L76 edCorrectnessWitness]: Location invariant after [L710-L710] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:06:49,450 INFO L76 edCorrectnessWitness]: Location invariant before [L717-L717] g1 == 0 [2024-02-07 19:06:49,450 INFO L76 edCorrectnessWitness]: Location invariant before [L712-L712] g1 == 0 [2024-02-07 19:06:49,450 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] g2 == 1 [2024-02-07 19:06:49,450 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] g1 == 1 [2024-02-07 19:06:49,451 INFO L76 edCorrectnessWitness]: Location invariant after [L718-L718] g2 == 0 [2024-02-07 19:06:49,451 INFO L76 edCorrectnessWitness]: Location invariant after [L717-L717] g1 == 0 [2024-02-07 19:06:49,451 INFO L76 edCorrectnessWitness]: Location invariant after [L712-L712] g1 == 0 [2024-02-07 19:06:49,451 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g1 == 1 [2024-02-07 19:06:49,451 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] g1 == 0 [2024-02-07 19:06:49,451 INFO L76 edCorrectnessWitness]: Location invariant after [L705-L705] g2 == 0 [2024-02-07 19:06:49,451 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:06:49,525 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:06:49,766 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_42-trylock2_racefree.i[30176,30189] [2024-02-07 19:06:49,798 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:06:49,810 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:06:49,860 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_42-trylock2_racefree.i[30176,30189] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:06:49,925 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:06:49,961 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:06:49,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49 WrapperNode [2024-02-07 19:06:49,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:06:49,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:06:49,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:06:49,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:06:49,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:49,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,027 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 155 [2024-02-07 19:06:50,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:06:50,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:06:50,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:06:50,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:06:50,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,066 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 2, 5, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 0, 5, 5]. The 1 writes are split as follows [0, 0, 1, 0, 0]. [2024-02-07 19:06:50,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:06:50,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:06:50,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:06:50,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:06:50,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (1/1) ... [2024-02-07 19:06:50,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:06:50,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:06:50,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 19:06:50,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 19:06:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:06:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:06:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:06:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:06:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:06:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:06:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:06:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:06:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:06:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:06:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:06:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:06:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:06:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:06:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:06:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:06:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-02-07 19:06:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:06:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:06:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:06:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:06:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:06:50,187 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:06:50,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:06:50,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:06:50,188 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:06:50,287 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:06:50,288 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:06:50,580 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:06:50,581 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:06:50,698 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:06:50,699 INFO L320 CfgBuilder]: Removed 23 assume(true) statements. [2024-02-07 19:06:50,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:06:50 BoogieIcfgContainer [2024-02-07 19:06:50,699 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:06:50,701 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:06:50,701 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:06:50,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:06:50,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:06:48" (1/4) ... [2024-02-07 19:06:50,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306d483a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:06:50, skipping insertion in model container [2024-02-07 19:06:50,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:06:49" (2/4) ... [2024-02-07 19:06:50,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306d483a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:06:50, skipping insertion in model container [2024-02-07 19:06:50,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:06:49" (3/4) ... [2024-02-07 19:06:50,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306d483a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:06:50, skipping insertion in model container [2024-02-07 19:06:50,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:06:50" (4/4) ... [2024-02-07 19:06:50,706 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-02-07 19:06:50,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:06:50,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-02-07 19:06:50,721 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:06:50,768 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:06:50,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 137 transitions, 281 flow [2024-02-07 19:06:50,871 INFO L124 PetriNetUnfolderBase]: 41/207 cut-off events. [2024-02-07 19:06:50,872 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:06:50,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 207 events. 41/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 990 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 130. Up to 6 conditions per place. [2024-02-07 19:06:50,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 137 transitions, 281 flow [2024-02-07 19:06:50,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 136 transitions, 279 flow [2024-02-07 19:06:50,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:06:50,904 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;@feb21ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:06:50,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-02-07 19:06:50,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:06:50,939 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 19:06:50,939 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:06:50,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:50,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:06:50,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-07 19:06:50,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:50,945 INFO L85 PathProgramCache]: Analyzing trace with hash 589285043, now seen corresponding path program 1 times [2024-02-07 19:06:50,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:50,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303530418] [2024-02-07 19:06:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:50,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:06:51,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303530418] [2024-02-07 19:06:51,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303530418] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:51,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:51,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:06:51,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172772480] [2024-02-07 19:06:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:51,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:51,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:51,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:51,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 137 [2024-02-07 19:06:51,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 136 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:06:51,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:51,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 137 [2024-02-07 19:06:51,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:51,577 INFO L124 PetriNetUnfolderBase]: 63/199 cut-off events. [2024-02-07 19:06:51,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:06:51,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 199 events. 63/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 604 event pairs, 0 based on Foata normal form. 30/221 useless extension candidates. Maximal degree in co-relation 324. Up to 129 conditions per place. [2024-02-07 19:06:51,595 INFO L140 encePairwiseOnDemand]: 121/137 looper letters, 46 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-02-07 19:06:51,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 73 transitions, 246 flow [2024-02-07 19:06:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-02-07 19:06:51,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531021897810219 [2024-02-07 19:06:51,624 INFO L175 Difference]: Start difference. First operand has 113 places, 136 transitions, 279 flow. Second operand 4 states and 291 transitions. [2024-02-07 19:06:51,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 73 transitions, 246 flow [2024-02-07 19:06:51,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:06:51,629 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 110 flow [2024-02-07 19:06:51,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-02-07 19:06:51,633 INFO L281 CegarLoopForPetriNet]: 113 programPoint places, -56 predicate places. [2024-02-07 19:06:51,633 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 110 flow [2024-02-07 19:06:51,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:06:51,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:51,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 19:06:51,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:06:51,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-07 19:06:51,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash -632734585, now seen corresponding path program 1 times [2024-02-07 19:06:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206754605] [2024-02-07 19:06:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:06:51,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:06:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:06:51,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:06:51,741 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:06:51,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2024-02-07 19:06:51,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 27 remaining) [2024-02-07 19:06:51,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 27 remaining) [2024-02-07 19:06:51,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 27 remaining) [2024-02-07 19:06:51,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (22 of 27 remaining) [2024-02-07 19:06:51,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 27 remaining) [2024-02-07 19:06:51,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (20 of 27 remaining) [2024-02-07 19:06:51,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (19 of 27 remaining) [2024-02-07 19:06:51,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 27 remaining) [2024-02-07 19:06:51,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (17 of 27 remaining) [2024-02-07 19:06:51,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 27 remaining) [2024-02-07 19:06:51,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 27 remaining) [2024-02-07 19:06:51,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 27 remaining) [2024-02-07 19:06:51,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 27 remaining) [2024-02-07 19:06:51,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 27 remaining) [2024-02-07 19:06:51,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 27 remaining) [2024-02-07 19:06:51,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 27 remaining) [2024-02-07 19:06:51,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 27 remaining) [2024-02-07 19:06:51,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 27 remaining) [2024-02-07 19:06:51,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 27 remaining) [2024-02-07 19:06:51,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 27 remaining) [2024-02-07 19:06:51,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 27 remaining) [2024-02-07 19:06:51,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 27 remaining) [2024-02-07 19:06:51,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 27 remaining) [2024-02-07 19:06:51,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 27 remaining) [2024-02-07 19:06:51,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 27 remaining) [2024-02-07 19:06:51,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 27 remaining) [2024-02-07 19:06:51,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:06:51,747 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 19:06:51,750 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:06:51,750 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:06:51,773 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 19:06:51,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 196 transitions, 408 flow [2024-02-07 19:06:51,806 INFO L124 PetriNetUnfolderBase]: 69/349 cut-off events. [2024-02-07 19:06:51,806 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 19:06:51,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 349 events. 69/349 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1930 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 213. Up to 9 conditions per place. [2024-02-07 19:06:51,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 196 transitions, 408 flow [2024-02-07 19:06:51,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 196 transitions, 408 flow [2024-02-07 19:06:51,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:06:51,816 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;@feb21ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:06:51,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-02-07 19:06:51,818 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:06:51,818 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 19:06:51,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:06:51,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:51,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:06:51,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 19:06:51,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash 776383600, now seen corresponding path program 1 times [2024-02-07 19:06:51,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:51,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992581279] [2024-02-07 19:06:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:51,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:06:51,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992581279] [2024-02-07 19:06:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992581279] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:51,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:06:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551681673] [2024-02-07 19:06:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:51,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:06:51,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:06:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:06:51,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 196 [2024-02-07 19:06:51,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 196 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:06:51,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:51,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 196 [2024-02-07 19:06:51,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:06:58,654 INFO L124 PetriNetUnfolderBase]: 30788/62874 cut-off events. [2024-02-07 19:06:58,654 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-02-07 19:06:58,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109913 conditions, 62874 events. 30788/62874 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 625167 event pairs, 14428 based on Foata normal form. 15312/74635 useless extension candidates. Maximal degree in co-relation 5020. Up to 45823 conditions per place. [2024-02-07 19:06:59,318 INFO L140 encePairwiseOnDemand]: 155/196 looper letters, 145 selfloop transitions, 3 changer transitions 0/226 dead transitions. [2024-02-07 19:06:59,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 226 transitions, 764 flow [2024-02-07 19:06:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:06:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:06:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 536 transitions. [2024-02-07 19:06:59,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2024-02-07 19:06:59,336 INFO L175 Difference]: Start difference. First operand has 161 places, 196 transitions, 408 flow. Second operand 4 states and 536 transitions. [2024-02-07 19:06:59,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 226 transitions, 764 flow [2024-02-07 19:06:59,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 226 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:06:59,358 INFO L231 Difference]: Finished difference. Result has 166 places, 160 transitions, 352 flow [2024-02-07 19:06:59,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=166, PETRI_TRANSITIONS=160} [2024-02-07 19:06:59,360 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2024-02-07 19:06:59,361 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 160 transitions, 352 flow [2024-02-07 19:06:59,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:06:59,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:06:59,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:06:59,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:06:59,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 19:06:59,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:06:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1175482400, now seen corresponding path program 1 times [2024-02-07 19:06:59,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:06:59,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263994379] [2024-02-07 19:06:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:06:59,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:06:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:06:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:06:59,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:06:59,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263994379] [2024-02-07 19:06:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263994379] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:06:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:06:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:06:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353997495] [2024-02-07 19:06:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:06:59,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:06:59,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:06:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:06:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:06:59,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 196 [2024-02-07 19:06:59,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 160 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:06:59,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:06:59,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 196 [2024-02-07 19:06:59,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:06,083 INFO L124 PetriNetUnfolderBase]: 41649/89679 cut-off events. [2024-02-07 19:07:06,084 INFO L125 PetriNetUnfolderBase]: For 2906/2906 co-relation queries the response was YES. [2024-02-07 19:07:06,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159685 conditions, 89679 events. 41649/89679 cut-off events. For 2906/2906 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 996441 event pairs, 27777 based on Foata normal form. 3020/87606 useless extension candidates. Maximal degree in co-relation 146978. Up to 49901 conditions per place. [2024-02-07 19:07:06,899 INFO L140 encePairwiseOnDemand]: 177/196 looper letters, 153 selfloop transitions, 10 changer transitions 0/235 dead transitions. [2024-02-07 19:07:06,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 235 transitions, 850 flow [2024-02-07 19:07:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2024-02-07 19:07:06,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2024-02-07 19:07:06,902 INFO L175 Difference]: Start difference. First operand has 166 places, 160 transitions, 352 flow. Second operand 3 states and 388 transitions. [2024-02-07 19:07:06,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 235 transitions, 850 flow [2024-02-07 19:07:06,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 235 transitions, 847 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:07:06,908 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 436 flow [2024-02-07 19:07:06,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2024-02-07 19:07:06,909 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 8 predicate places. [2024-02-07 19:07:06,909 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 436 flow [2024-02-07 19:07:06,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:06,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:06,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 19:07:06,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:07:06,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 19:07:06,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash 450703094, now seen corresponding path program 1 times [2024-02-07 19:07:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884183639] [2024-02-07 19:07:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:07,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884183639] [2024-02-07 19:07:07,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884183639] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:07:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000912660] [2024-02-07 19:07:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:07,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:07,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:07,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:07,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:07:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:07,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 19:07:07,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:07,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:07:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:07,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000912660] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:07:07,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:07:07,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 19:07:07,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170238833] [2024-02-07 19:07:07,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:07:07,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:07:07,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:07,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:07:07,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:07:07,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 196 [2024-02-07 19:07:07,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:07,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:07,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 196 [2024-02-07 19:07:07,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:08,408 INFO L124 PetriNetUnfolderBase]: 4061/9516 cut-off events. [2024-02-07 19:07:08,409 INFO L125 PetriNetUnfolderBase]: For 4281/4293 co-relation queries the response was YES. [2024-02-07 19:07:08,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18327 conditions, 9516 events. 4061/9516 cut-off events. For 4281/4293 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 78011 event pairs, 1624 based on Foata normal form. 1328/10788 useless extension candidates. Maximal degree in co-relation 3271. Up to 5475 conditions per place. [2024-02-07 19:07:08,442 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 120 selfloop transitions, 3 changer transitions 0/172 dead transitions. [2024-02-07 19:07:08,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 172 transitions, 704 flow [2024-02-07 19:07:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:07:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:07:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 507 transitions. [2024-02-07 19:07:08,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173469387755102 [2024-02-07 19:07:08,445 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 436 flow. Second operand 5 states and 507 transitions. [2024-02-07 19:07:08,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 172 transitions, 704 flow [2024-02-07 19:07:08,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 172 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 19:07:08,454 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 258 flow [2024-02-07 19:07:08,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-02-07 19:07:08,456 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -51 predicate places. [2024-02-07 19:07:08,456 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 258 flow [2024-02-07 19:07:08,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:08,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:08,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:08,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-07 19:07:08,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:08,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 19:07:08,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:08,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2080215101, now seen corresponding path program 1 times [2024-02-07 19:07:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:08,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594788218] [2024-02-07 19:07:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:08,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:08,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:08,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594788218] [2024-02-07 19:07:08,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594788218] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:08,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:08,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:08,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061731334] [2024-02-07 19:07:08,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:08,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:08,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 196 [2024-02-07 19:07:08,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:08,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:08,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 196 [2024-02-07 19:07:08,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:09,205 INFO L124 PetriNetUnfolderBase]: 3397/7476 cut-off events. [2024-02-07 19:07:09,205 INFO L125 PetriNetUnfolderBase]: For 2023/2023 co-relation queries the response was YES. [2024-02-07 19:07:09,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14508 conditions, 7476 events. 3397/7476 cut-off events. For 2023/2023 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 55413 event pairs, 2421 based on Foata normal form. 328/7666 useless extension candidates. Maximal degree in co-relation 12771. Up to 3983 conditions per place. [2024-02-07 19:07:09,238 INFO L140 encePairwiseOnDemand]: 185/196 looper letters, 83 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2024-02-07 19:07:09,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 129 transitions, 492 flow [2024-02-07 19:07:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:07:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:07:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-02-07 19:07:09,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46683673469387754 [2024-02-07 19:07:09,240 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 258 flow. Second operand 4 states and 366 transitions. [2024-02-07 19:07:09,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 129 transitions, 492 flow [2024-02-07 19:07:09,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 484 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:07:09,243 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 239 flow [2024-02-07 19:07:09,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-02-07 19:07:09,244 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -55 predicate places. [2024-02-07 19:07:09,244 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 239 flow [2024-02-07 19:07:09,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:09,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:09,245 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 19:07:09,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:07:09,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 19:07:09,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash -665995069, now seen corresponding path program 1 times [2024-02-07 19:07:09,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:09,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829004935] [2024-02-07 19:07:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:09,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:07:09,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:07:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:07:09,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:07:09,270 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:07:09,270 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2024-02-07 19:07:09,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 35 remaining) [2024-02-07 19:07:09,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 35 remaining) [2024-02-07 19:07:09,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 35 remaining) [2024-02-07 19:07:09,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (30 of 35 remaining) [2024-02-07 19:07:09,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 35 remaining) [2024-02-07 19:07:09,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (28 of 35 remaining) [2024-02-07 19:07:09,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (27 of 35 remaining) [2024-02-07 19:07:09,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 35 remaining) [2024-02-07 19:07:09,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (25 of 35 remaining) [2024-02-07 19:07:09,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 35 remaining) [2024-02-07 19:07:09,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 35 remaining) [2024-02-07 19:07:09,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 35 remaining) [2024-02-07 19:07:09,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 35 remaining) [2024-02-07 19:07:09,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 35 remaining) [2024-02-07 19:07:09,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 35 remaining) [2024-02-07 19:07:09,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 35 remaining) [2024-02-07 19:07:09,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 35 remaining) [2024-02-07 19:07:09,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 35 remaining) [2024-02-07 19:07:09,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 35 remaining) [2024-02-07 19:07:09,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 35 remaining) [2024-02-07 19:07:09,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 35 remaining) [2024-02-07 19:07:09,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 35 remaining) [2024-02-07 19:07:09,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 35 remaining) [2024-02-07 19:07:09,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 35 remaining) [2024-02-07 19:07:09,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 35 remaining) [2024-02-07 19:07:09,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 35 remaining) [2024-02-07 19:07:09,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 35 remaining) [2024-02-07 19:07:09,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 35 remaining) [2024-02-07 19:07:09,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 35 remaining) [2024-02-07 19:07:09,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 35 remaining) [2024-02-07 19:07:09,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 35 remaining) [2024-02-07 19:07:09,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 35 remaining) [2024-02-07 19:07:09,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 35 remaining) [2024-02-07 19:07:09,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 35 remaining) [2024-02-07 19:07:09,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:07:09,275 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-02-07 19:07:09,276 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:07:09,276 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:07:09,301 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 19:07:09,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 255 transitions, 537 flow [2024-02-07 19:07:09,343 INFO L124 PetriNetUnfolderBase]: 100/506 cut-off events. [2024-02-07 19:07:09,344 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 19:07:09,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 506 events. 100/506 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2950 event pairs, 1 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 362. Up to 12 conditions per place. [2024-02-07 19:07:09,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 255 transitions, 537 flow [2024-02-07 19:07:09,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 255 transitions, 537 flow [2024-02-07 19:07:09,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:07:09,356 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;@feb21ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:07:09,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-02-07 19:07:09,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:07:09,357 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 19:07:09,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:07:09,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:09,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:07:09,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-02-07 19:07:09,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:09,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1019786152, now seen corresponding path program 1 times [2024-02-07 19:07:09,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:09,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396193817] [2024-02-07 19:07:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:09,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:09,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396193817] [2024-02-07 19:07:09,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396193817] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:09,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:09,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:09,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430709222] [2024-02-07 19:07:09,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:09,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:09,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:09,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:09,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 255 [2024-02-07 19:07:09,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 255 transitions, 537 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:09,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:09,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 255 [2024-02-07 19:07:09,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand