./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28-race_reach_72-funloop_hard_racing.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28-race_reach_72-funloop_hard_racing.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:43:01,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:43:01,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:43:01,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:43:01,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:43:01,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:43:01,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:43:01,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:43:01,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:43:01,518 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:43:01,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:43:01,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:43:01,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:43:01,519 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:43:01,519 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:43:01,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:43:01,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:43:01,520 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:43:01,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:43:01,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:43:01,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:43:01,521 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:43:01,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:43:01,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:43:01,522 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:43:01,522 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:43:01,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:43:01,523 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:43:01,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:43:01,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:43:01,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:43:01,524 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:43:01,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:43:01,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:43:01,524 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:43:01,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:43:01,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:43:01,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:43:01,525 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:43:01,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:43:01,526 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:43:01,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:43:01,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:43:01,526 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:43:01,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:43:01,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:43:01,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:43:01,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:43:01,750 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:43:01,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-01-31 17:43:02,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:43:03,052 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:43:03,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-01-31 17:43:03,071 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336918869/fabf55a8ad9747188fa05c23892338ce/FLAGe31ed6b33 [2024-01-31 17:43:03,081 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336918869/fabf55a8ad9747188fa05c23892338ce [2024-01-31 17:43:03,083 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:43:03,083 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:43:03,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28-race_reach_72-funloop_hard_racing.yml/witness.yml [2024-01-31 17:43:03,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:43:03,196 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:43:03,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:43:03,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:43:03,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:43:03,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:43:03" (1/2) ... [2024-01-31 17:43:03,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284515ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03, skipping insertion in model container [2024-01-31 17:43:03,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:43:03" (1/2) ... [2024-01-31 17:43:03,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@430fd0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03, skipping insertion in model container [2024-01-31 17:43:03,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:43:03" (2/2) ... [2024-01-31 17:43:03,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284515ee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:03, skipping insertion in model container [2024-01-31 17:43:03,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:43:03" (2/2) ... [2024-01-31 17:43:03,208 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:43:03,357 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:43:03,359 INFO L98 nessWitnessExtractor]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 17:43:03,359 INFO L98 nessWitnessExtractor]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 17:43:03,359 INFO L98 nessWitnessExtractor]: Location invariant before [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 17:43:03,359 INFO L98 nessWitnessExtractor]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 17:43:03,359 INFO L98 nessWitnessExtractor]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 17:43:03,360 INFO L98 nessWitnessExtractor]: Location invariant before [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-01-31 17:43:03,360 INFO L98 nessWitnessExtractor]: Location invariant before [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 17:43:03,360 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 17:43:03,360 INFO L98 nessWitnessExtractor]: Location invariant before [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 17:43:03,360 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 17:43:03,361 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 17:43:03,361 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] ((i == 10) && (i == 10)) && (i == 10000) [2024-01-31 17:43:03,407 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:43:03,744 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_72-funloop_hard_racing.i[41323,41336] [2024-01-31 17:43:03,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:43:03,791 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:43:03,828 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_72-funloop_hard_racing.i[41323,41336] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 17:43:04,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:43:04,064 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:43:04,066 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04 WrapperNode [2024-01-31 17:43:04,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:43:04,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:43:04,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:43:04,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:43:04,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,157 INFO L138 Inliner]: procedures = 272, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 303 [2024-01-31 17:43:04,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:43:04,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:43:04,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:43:04,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:43:04,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,196 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 5, 16, 2]. 64 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 8 writes are split as follows [0, 0, 7, 1]. [2024-01-31 17:43:04,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:43:04,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:43:04,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:43:04,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:43:04,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (1/1) ... [2024-01-31 17:43:04,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:43:04,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:04,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:43:04,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:43:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:43:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:43:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 17:43:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:43:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:43:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:43:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:43:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:43:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:43:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:43:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:43:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 17:43:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:43:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-31 17:43:04,328 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-31 17:43:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:43:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:43:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:43:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:43:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:43:04,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:43:04,330 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:43:04,479 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:43:04,481 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:43:04,805 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:43:04,805 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:43:04,959 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:43:04,960 INFO L320 CfgBuilder]: Removed 35 assume(true) statements. [2024-01-31 17:43:04,960 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:43:04 BoogieIcfgContainer [2024-01-31 17:43:04,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:43:04,963 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:43:04,963 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:43:04,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:43:04,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:43:03" (1/4) ... [2024-01-31 17:43:04,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9cc0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:43:04, skipping insertion in model container [2024-01-31 17:43:04,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:43:03" (2/4) ... [2024-01-31 17:43:04,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9cc0cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:43:04, skipping insertion in model container [2024-01-31 17:43:04,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:04" (3/4) ... [2024-01-31 17:43:04,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9cc0cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:43:04, skipping insertion in model container [2024-01-31 17:43:04,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:43:04" (4/4) ... [2024-01-31 17:43:04,969 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2024-01-31 17:43:04,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:43:04,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-01-31 17:43:04,984 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:43:05,048 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-31 17:43:05,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 170 transitions, 347 flow [2024-01-31 17:43:05,153 INFO L124 PetriNetUnfolderBase]: 65/278 cut-off events. [2024-01-31 17:43:05,153 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 17:43:05,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 278 events. 65/278 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1542 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2024-01-31 17:43:05,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 170 transitions, 347 flow [2024-01-31 17:43:05,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 168 transitions, 340 flow [2024-01-31 17:43:05,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:43:05,192 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;@69bca8ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:43:05,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-01-31 17:43:05,196 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:43:05,197 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-01-31 17:43:05,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:43:05,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:05,198 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-01-31 17:43:05,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 17:43:05,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:05,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1131783140, now seen corresponding path program 1 times [2024-01-31 17:43:05,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:05,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889296032] [2024-01-31 17:43:05,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:05,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:05,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:05,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889296032] [2024-01-31 17:43:05,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889296032] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:05,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:43:05,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:43:05,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642114834] [2024-01-31 17:43:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:05,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:43:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:05,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:43:05,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:43:05,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 170 [2024-01-31 17:43:05,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 168 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:05,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:05,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 170 [2024-01-31 17:43:05,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:06,021 INFO L124 PetriNetUnfolderBase]: 716/2168 cut-off events. [2024-01-31 17:43:06,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:43:06,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3538 conditions, 2168 events. 716/2168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16338 event pairs, 609 based on Foata normal form. 434/2393 useless extension candidates. Maximal degree in co-relation 3438. Up to 1365 conditions per place. [2024-01-31 17:43:06,033 INFO L140 encePairwiseOnDemand]: 139/170 looper letters, 55 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-01-31 17:43:06,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 328 flow [2024-01-31 17:43:06,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:43:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:43:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-01-31 17:43:06,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2024-01-31 17:43:06,047 INFO L175 Difference]: Start difference. First operand has 132 places, 168 transitions, 340 flow. Second operand 3 states and 278 transitions. [2024-01-31 17:43:06,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 328 flow [2024-01-31 17:43:06,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:43:06,053 INFO L231 Difference]: Finished difference. Result has 105 places, 105 transitions, 224 flow [2024-01-31 17:43:06,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=105, PETRI_TRANSITIONS=105} [2024-01-31 17:43:06,057 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -27 predicate places. [2024-01-31 17:43:06,058 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 105 transitions, 224 flow [2024-01-31 17:43:06,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:06,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:06,059 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:06,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:43:06,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 17:43:06,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1394678718, now seen corresponding path program 1 times [2024-01-31 17:43:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035093406] [2024-01-31 17:43:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035093406] [2024-01-31 17:43:06,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035093406] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197879060] [2024-01-31 17:43:06,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:06,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:06,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:06,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:06,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:43:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:06,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 17:43:06,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:06,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:06,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197879060] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:43:06,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:43:06,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-31 17:43:06,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927493668] [2024-01-31 17:43:06,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:43:06,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:43:06,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:06,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:43:06,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:43:06,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 170 [2024-01-31 17:43:06,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 105 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:06,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:06,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 170 [2024-01-31 17:43:06,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:06,603 INFO L124 PetriNetUnfolderBase]: 716/2171 cut-off events. [2024-01-31 17:43:06,603 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:43:06,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3554 conditions, 2171 events. 716/2171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16330 event pairs, 609 based on Foata normal form. 0/1962 useless extension candidates. Maximal degree in co-relation 3542. Up to 1365 conditions per place. [2024-01-31 17:43:06,612 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 55 selfloop transitions, 5 changer transitions 0/108 dead transitions. [2024-01-31 17:43:06,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 108 transitions, 356 flow [2024-01-31 17:43:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:43:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:43:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 447 transitions. [2024-01-31 17:43:06,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2024-01-31 17:43:06,616 INFO L175 Difference]: Start difference. First operand has 105 places, 105 transitions, 224 flow. Second operand 6 states and 447 transitions. [2024-01-31 17:43:06,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 108 transitions, 356 flow [2024-01-31 17:43:06,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 352 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:06,619 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 256 flow [2024-01-31 17:43:06,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2024-01-31 17:43:06,620 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -20 predicate places. [2024-01-31 17:43:06,620 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 256 flow [2024-01-31 17:43:06,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:06,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:06,621 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-01-31 17:43:06,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 17:43:06,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:06,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 17:43:06,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash -202257564, now seen corresponding path program 2 times [2024-01-31 17:43:06,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:06,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966692564] [2024-01-31 17:43:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:06,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:06,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:06,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966692564] [2024-01-31 17:43:06,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966692564] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:06,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740963445] [2024-01-31 17:43:06,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:43:06,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:06,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:06,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:06,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:43:06,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:43:06,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:43:06,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:43:06,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:06,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740963445] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:43:07,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:43:07,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-31 17:43:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039545054] [2024-01-31 17:43:07,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:43:07,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 17:43:07,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 17:43:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-01-31 17:43:07,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 170 [2024-01-31 17:43:07,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 256 flow. Second operand has 13 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:07,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:07,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 170 [2024-01-31 17:43:07,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:07,329 INFO L124 PetriNetUnfolderBase]: 716/2177 cut-off events. [2024-01-31 17:43:07,329 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-31 17:43:07,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 2177 events. 716/2177 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16323 event pairs, 609 based on Foata normal form. 6/1975 useless extension candidates. Maximal degree in co-relation 3533. Up to 1365 conditions per place. [2024-01-31 17:43:07,340 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 55 selfloop transitions, 11 changer transitions 0/114 dead transitions. [2024-01-31 17:43:07,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 424 flow [2024-01-31 17:43:07,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:43:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:43:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 840 transitions. [2024-01-31 17:43:07,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-01-31 17:43:07,343 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 256 flow. Second operand 12 states and 840 transitions. [2024-01-31 17:43:07,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 424 flow [2024-01-31 17:43:07,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 114 transitions, 410 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:07,346 INFO L231 Difference]: Finished difference. Result has 128 places, 114 transitions, 326 flow [2024-01-31 17:43:07,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=326, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2024-01-31 17:43:07,347 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2024-01-31 17:43:07,347 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 326 flow [2024-01-31 17:43:07,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:07,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:07,348 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-01-31 17:43:07,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:07,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-01-31 17:43:07,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-31 17:43:07,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash -598835548, now seen corresponding path program 3 times [2024-01-31 17:43:07,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:07,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817282767] [2024-01-31 17:43:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:07,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:07,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 17:43:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:07,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 17:43:07,643 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 17:43:07,644 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-01-31 17:43:07,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 29 remaining) [2024-01-31 17:43:07,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 29 remaining) [2024-01-31 17:43:07,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 29 remaining) [2024-01-31 17:43:07,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (24 of 29 remaining) [2024-01-31 17:43:07,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 29 remaining) [2024-01-31 17:43:07,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (22 of 29 remaining) [2024-01-31 17:43:07,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 29 remaining) [2024-01-31 17:43:07,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 29 remaining) [2024-01-31 17:43:07,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 29 remaining) [2024-01-31 17:43:07,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 29 remaining) [2024-01-31 17:43:07,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 29 remaining) [2024-01-31 17:43:07,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 29 remaining) [2024-01-31 17:43:07,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 29 remaining) [2024-01-31 17:43:07,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 29 remaining) [2024-01-31 17:43:07,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 29 remaining) [2024-01-31 17:43:07,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 29 remaining) [2024-01-31 17:43:07,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (11 of 29 remaining) [2024-01-31 17:43:07,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 29 remaining) [2024-01-31 17:43:07,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 29 remaining) [2024-01-31 17:43:07,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 29 remaining) [2024-01-31 17:43:07,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 29 remaining) [2024-01-31 17:43:07,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 29 remaining) [2024-01-31 17:43:07,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 29 remaining) [2024-01-31 17:43:07,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 29 remaining) [2024-01-31 17:43:07,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 29 remaining) [2024-01-31 17:43:07,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 29 remaining) [2024-01-31 17:43:07,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 29 remaining) [2024-01-31 17:43:07,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 29 remaining) [2024-01-31 17:43:07,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:43:07,653 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-01-31 17:43:07,655 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 17:43:07,655 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 17:43:07,740 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 17:43:07,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 226 transitions, 468 flow [2024-01-31 17:43:07,774 INFO L124 PetriNetUnfolderBase]: 105/449 cut-off events. [2024-01-31 17:43:07,774 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 17:43:07,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 449 events. 105/449 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2831 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 280. Up to 12 conditions per place. [2024-01-31 17:43:07,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 226 transitions, 468 flow [2024-01-31 17:43:07,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 226 transitions, 468 flow [2024-01-31 17:43:07,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:43:07,782 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;@69bca8ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:43:07,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-01-31 17:43:07,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:43:07,786 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2024-01-31 17:43:07,786 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:43:07,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:07,786 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-01-31 17:43:07,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-01-31 17:43:07,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:07,786 INFO L85 PathProgramCache]: Analyzing trace with hash 57529438, now seen corresponding path program 1 times [2024-01-31 17:43:07,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:07,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478412428] [2024-01-31 17:43:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:07,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:07,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:07,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478412428] [2024-01-31 17:43:07,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478412428] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:07,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:43:07,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:43:07,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946653488] [2024-01-31 17:43:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:07,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:43:07,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:07,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:43:07,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:43:07,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 226 [2024-01-31 17:43:07,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 226 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:07,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:07,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 226 [2024-01-31 17:43:07,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:13,111 INFO L124 PetriNetUnfolderBase]: 31582/65036 cut-off events. [2024-01-31 17:43:13,112 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-01-31 17:43:13,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110792 conditions, 65036 events. 31582/65036 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 690471 event pairs, 27867 based on Foata normal form. 14616/73146 useless extension candidates. Maximal degree in co-relation 92905. Up to 45684 conditions per place. [2024-01-31 17:43:13,466 INFO L140 encePairwiseOnDemand]: 184/226 looper letters, 78 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2024-01-31 17:43:13,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 149 transitions, 468 flow [2024-01-31 17:43:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:43:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:43:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2024-01-31 17:43:13,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5530973451327433 [2024-01-31 17:43:13,468 INFO L175 Difference]: Start difference. First operand has 177 places, 226 transitions, 468 flow. Second operand 3 states and 375 transitions. [2024-01-31 17:43:13,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 149 transitions, 468 flow [2024-01-31 17:43:13,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 149 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:43:13,474 INFO L231 Difference]: Finished difference. Result has 149 places, 149 transitions, 318 flow [2024-01-31 17:43:13,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=149, PETRI_TRANSITIONS=149} [2024-01-31 17:43:13,476 INFO L281 CegarLoopForPetriNet]: 177 programPoint places, -28 predicate places. [2024-01-31 17:43:13,476 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 149 transitions, 318 flow [2024-01-31 17:43:13,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:13,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:13,476 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:13,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:43:13,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-01-31 17:43:13,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1150098850, now seen corresponding path program 1 times [2024-01-31 17:43:13,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:13,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672597612] [2024-01-31 17:43:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:13,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:13,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:13,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672597612] [2024-01-31 17:43:13,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672597612] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:13,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476883314] [2024-01-31 17:43:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:13,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:13,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:13,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:43:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:13,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 17:43:13,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:13,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:13,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476883314] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:43:13,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:43:13,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-31 17:43:13,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929672699] [2024-01-31 17:43:13,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:43:13,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:43:13,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:13,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:43:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:43:13,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 226 [2024-01-31 17:43:13,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 149 transitions, 318 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:13,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:13,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 226 [2024-01-31 17:43:13,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:18,475 INFO L124 PetriNetUnfolderBase]: 31582/65039 cut-off events. [2024-01-31 17:43:18,475 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-01-31 17:43:18,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110808 conditions, 65039 events. 31582/65039 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 690598 event pairs, 27867 based on Foata normal form. 0/58533 useless extension candidates. Maximal degree in co-relation 110795. Up to 45684 conditions per place. [2024-01-31 17:43:18,898 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 78 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2024-01-31 17:43:18,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 152 transitions, 496 flow [2024-01-31 17:43:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:43:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:43:18,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 596 transitions. [2024-01-31 17:43:18,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43952802359882004 [2024-01-31 17:43:18,901 INFO L175 Difference]: Start difference. First operand has 149 places, 149 transitions, 318 flow. Second operand 6 states and 596 transitions. [2024-01-31 17:43:18,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 152 transitions, 496 flow [2024-01-31 17:43:18,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 152 transitions, 492 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:18,904 INFO L231 Difference]: Finished difference. Result has 156 places, 152 transitions, 350 flow [2024-01-31 17:43:18,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=156, PETRI_TRANSITIONS=152} [2024-01-31 17:43:18,908 INFO L281 CegarLoopForPetriNet]: 177 programPoint places, -21 predicate places. [2024-01-31 17:43:18,908 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 152 transitions, 350 flow [2024-01-31 17:43:18,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:18,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:18,909 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-01-31 17:43:18,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:19,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:19,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-01-31 17:43:19,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash -174586530, now seen corresponding path program 2 times [2024-01-31 17:43:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:19,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217239957] [2024-01-31 17:43:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:19,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:19,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217239957] [2024-01-31 17:43:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217239957] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865376938] [2024-01-31 17:43:19,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:43:19,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:19,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:19,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:19,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:43:19,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:43:19,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:43:19,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:43:19,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:19,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:19,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865376938] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:43:19,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:43:19,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-31 17:43:19,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573764582] [2024-01-31 17:43:19,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:43:19,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 17:43:19,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:19,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 17:43:19,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-01-31 17:43:19,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 226 [2024-01-31 17:43:19,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 152 transitions, 350 flow. Second operand has 13 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:19,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:19,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 226 [2024-01-31 17:43:19,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:25,220 INFO L124 PetriNetUnfolderBase]: 31582/65045 cut-off events. [2024-01-31 17:43:25,220 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-01-31 17:43:25,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110845 conditions, 65045 events. 31582/65045 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 690568 event pairs, 27867 based on Foata normal form. 6/58546 useless extension candidates. Maximal degree in co-relation 110786. Up to 45684 conditions per place. [2024-01-31 17:43:25,744 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 78 selfloop transitions, 11 changer transitions 0/158 dead transitions. [2024-01-31 17:43:25,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 158 transitions, 564 flow [2024-01-31 17:43:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:43:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:43:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1115 transitions. [2024-01-31 17:43:25,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111356932153392 [2024-01-31 17:43:25,749 INFO L175 Difference]: Start difference. First operand has 156 places, 152 transitions, 350 flow. Second operand 12 states and 1115 transitions. [2024-01-31 17:43:25,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 158 transitions, 564 flow [2024-01-31 17:43:25,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 158 transitions, 550 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:25,752 INFO L231 Difference]: Finished difference. Result has 172 places, 158 transitions, 420 flow [2024-01-31 17:43:25,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=420, PETRI_PLACES=172, PETRI_TRANSITIONS=158} [2024-01-31 17:43:25,754 INFO L281 CegarLoopForPetriNet]: 177 programPoint places, -5 predicate places. [2024-01-31 17:43:25,754 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 158 transitions, 420 flow [2024-01-31 17:43:25,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:25,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:25,755 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-01-31 17:43:25,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:25,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:25,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-01-31 17:43:25,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:25,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1941593822, now seen corresponding path program 3 times [2024-01-31 17:43:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:25,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030227701] [2024-01-31 17:43:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:25,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:25,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 17:43:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:26,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 17:43:26,035 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 17:43:26,035 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2024-01-31 17:43:26,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 36 remaining) [2024-01-31 17:43:26,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 36 remaining) [2024-01-31 17:43:26,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 36 remaining) [2024-01-31 17:43:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (31 of 36 remaining) [2024-01-31 17:43:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 36 remaining) [2024-01-31 17:43:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (29 of 36 remaining) [2024-01-31 17:43:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 36 remaining) [2024-01-31 17:43:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 36 remaining) [2024-01-31 17:43:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 36 remaining) [2024-01-31 17:43:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 36 remaining) [2024-01-31 17:43:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 36 remaining) [2024-01-31 17:43:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 36 remaining) [2024-01-31 17:43:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 36 remaining) [2024-01-31 17:43:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 36 remaining) [2024-01-31 17:43:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 36 remaining) [2024-01-31 17:43:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 36 remaining) [2024-01-31 17:43:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 36 remaining) [2024-01-31 17:43:26,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 36 remaining) [2024-01-31 17:43:26,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 36 remaining) [2024-01-31 17:43:26,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 36 remaining) [2024-01-31 17:43:26,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 36 remaining) [2024-01-31 17:43:26,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 36 remaining) [2024-01-31 17:43:26,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 36 remaining) [2024-01-31 17:43:26,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (11 of 36 remaining) [2024-01-31 17:43:26,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 36 remaining) [2024-01-31 17:43:26,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 36 remaining) [2024-01-31 17:43:26,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 36 remaining) [2024-01-31 17:43:26,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 36 remaining) [2024-01-31 17:43:26,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 36 remaining) [2024-01-31 17:43:26,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 36 remaining) [2024-01-31 17:43:26,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 36 remaining) [2024-01-31 17:43:26,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 36 remaining) [2024-01-31 17:43:26,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 36 remaining) [2024-01-31 17:43:26,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 36 remaining) [2024-01-31 17:43:26,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 36 remaining) [2024-01-31 17:43:26,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:43:26,044 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-01-31 17:43:26,044 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 17:43:26,044 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 17:43:26,122 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 17:43:26,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 282 transitions, 591 flow [2024-01-31 17:43:26,189 INFO L124 PetriNetUnfolderBase]: 148/631 cut-off events. [2024-01-31 17:43:26,190 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-31 17:43:26,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 631 events. 148/631 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4234 event pairs, 1 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 458. Up to 16 conditions per place. [2024-01-31 17:43:26,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 282 transitions, 591 flow [2024-01-31 17:43:26,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 282 transitions, 591 flow [2024-01-31 17:43:26,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:43:26,204 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;@69bca8ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:43:26,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-01-31 17:43:26,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:43:26,211 INFO L124 PetriNetUnfolderBase]: 10/74 cut-off events. [2024-01-31 17:43:26,212 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:43:26,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:26,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:26,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-01-31 17:43:26,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash 743893151, now seen corresponding path program 1 times [2024-01-31 17:43:26,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:26,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883447471] [2024-01-31 17:43:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:26,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:43:26,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:26,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883447471] [2024-01-31 17:43:26,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883447471] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:26,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:43:26,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:43:26,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862673228] [2024-01-31 17:43:26,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:26,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:43:26,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:26,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:43:26,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:43:26,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 282 [2024-01-31 17:43:26,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 282 transitions, 591 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:26,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:26,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 282 [2024-01-31 17:43:26,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand