./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_86-lists_racing.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_86-lists_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-dev-958ec4d-m [2024-02-07 14:54:44,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:54:44,335 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:54:44,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:54:44,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:54:44,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:54:44,367 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:54:44,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:54:44,368 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:54:44,373 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:54:44,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:54:44,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:54:44,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:54:44,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:54:44,375 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:54:44,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:54:44,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:54:44,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:54:44,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:54:44,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:54:44,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:54:44,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:54:44,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:54:44,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:54:44,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:54:44,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:54:44,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:54:44,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:54:44,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:54:44,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:54:44,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:54:44,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:54:44,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:44,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:54:44,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:54:44,381 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:54:44,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:54:44,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:54:44,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:54:44,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:54:44,382 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:54:44,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:54:44,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:54:44,382 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:54:44,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:54:44,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:54:44,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:54:44,611 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:54:44,611 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:54:44,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2024-02-07 14:54:45,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:54:46,073 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:54:46,074 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2024-02-07 14:54:46,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a96f21dab/72b79d7573894995bc7d1061e4210005/FLAG252e08661 [2024-02-07 14:54:46,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a96f21dab/72b79d7573894995bc7d1061e4210005 [2024-02-07 14:54:46,123 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:54:46,124 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:54:46,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_86-lists_racing.yml/witness.yml [2024-02-07 14:54:46,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:54:46,227 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:54:46,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:46,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:54:46,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:54:46,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:46" (1/2) ... [2024-02-07 14:54:46,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1893746d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46, skipping insertion in model container [2024-02-07 14:54:46,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:46" (1/2) ... [2024-02-07 14:54:46,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f6169a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46, skipping insertion in model container [2024-02-07 14:54:46,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:46" (2/2) ... [2024-02-07 14:54:46,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1893746d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46, skipping insertion in model container [2024-02-07 14:54:46,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:46" (2/2) ... [2024-02-07 14:54:46,237 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:54:46,291 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:54:46,293 INFO L76 edCorrectnessWitness]: Location invariant before [L1040-L1040] (-255 <= j) && (j <= 255) [2024-02-07 14:54:46,293 INFO L76 edCorrectnessWitness]: Location invariant after [L1038-L1038] (-255 <= i) && (i <= 255) [2024-02-07 14:54:46,293 INFO L76 edCorrectnessWitness]: Location invariant before [L1053-L1053] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,294 INFO L76 edCorrectnessWitness]: Location invariant before [L1039-L1039] (((-255 <= i) && (-255 <= j)) && (i <= 255)) && (j <= 255) [2024-02-07 14:54:46,294 INFO L76 edCorrectnessWitness]: Location invariant after [L1054-L1054] ((((((((((((((((((((((((i == 6 || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7 [2024-02-07 14:54:46,294 INFO L76 edCorrectnessWitness]: Location invariant before [L1041-L1041] (-255 <= j) && (j <= 255) [2024-02-07 14:54:46,294 INFO L76 edCorrectnessWitness]: Location invariant before [L1049-L1049] (((((((7 <= i && i <= 255) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,295 INFO L76 edCorrectnessWitness]: Location invariant before [L1033-L1033] (-255 <= i) && (i <= 255) [2024-02-07 14:54:46,295 INFO L76 edCorrectnessWitness]: Location invariant after [L1041-L1041] (-255 <= j) && (j <= 255) [2024-02-07 14:54:46,295 INFO L76 edCorrectnessWitness]: Location invariant before [L1056-L1056] ((((((((((((((((((((((((i == 17 || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18 [2024-02-07 14:54:46,295 INFO L76 edCorrectnessWitness]: Location invariant before [L1051-L1051] (((((((7 <= i && i <= 255) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,295 INFO L76 edCorrectnessWitness]: Location invariant before [L1032-L1032] (-255 <= i) && (i <= 255) [2024-02-07 14:54:46,295 INFO L76 edCorrectnessWitness]: Location invariant before [L1054-L1054] ((((((((((((((((((((((((i == 6 || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7 [2024-02-07 14:54:46,295 INFO L76 edCorrectnessWitness]: Location invariant before [L1038-L1038] (-255 <= i) && (i <= 255) [2024-02-07 14:54:46,296 INFO L76 edCorrectnessWitness]: Location invariant before [L1055-L1055] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,296 INFO L76 edCorrectnessWitness]: Location invariant after [L1053-L1053] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,296 INFO L76 edCorrectnessWitness]: Location invariant after [L1056-L1056] ((((((((((((((((((((((((i == 17 || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18 [2024-02-07 14:54:46,296 INFO L76 edCorrectnessWitness]: Location invariant after [L1055-L1055] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:54:46,662 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_86-lists_racing.i[47038,47051] [2024-02-07 14:54:46,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:46,774 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:54:46,812 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_86-lists_racing.i[47038,47051] Start Parsing Local Start Parsing Local [2024-02-07 14:54:46,850 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:54:46,852 WARN L423 MainDispatcher]: Unable to annotate j = __VERIFIER_nondet_int() % 256 with a witness entry Start Parsing Local Start Parsing Local [2024-02-07 14:54:46,854 WARN L423 MainDispatcher]: Unable to annotate struct s with a witness entry [2024-02-07 14:54:46,858 WARN L423 MainDispatcher]: Unable to annotate *p = take(buckets[j]) with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:54:46,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:46,969 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:54:46,970 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46 WrapperNode [2024-02-07 14:54:46,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:46,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:46,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:54:46,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:54:46,978 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 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,007 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 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,057 INFO L138 Inliner]: procedures = 279, calls = 69, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 269 [2024-02-07 14:54:47,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:47,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:54:47,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:54:47,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:54:47,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,105 INFO L175 MemorySlicer]: Split 35 memory accesses to 8 slices as follows [2, 5, 4, 5, 1, 14, 2, 2]. 40 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 0, 5, 0, 0, 0, 0]. The 13 writes are split as follows [0, 0, 2, 0, 1, 8, 1, 1]. [2024-02-07 14:54:47,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:54:47,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:54:47,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:54:47,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:54:47,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:47,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:47,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:47,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:54:47,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:54:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:54:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 14:54:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 14:54:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 14:54:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 14:54:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-02-07 14:54:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-02-07 14:54:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-02-07 14:54:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-02-07 14:54:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-02-07 14:54:47,259 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-02-07 14:54:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:54:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:54:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:54:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:54:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:54:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:54:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:54:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:54:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-02-07 14:54:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-02-07 14:54:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-07 14:54:47,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-07 14:54:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:54:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:54:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:54:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:54:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:54:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:54:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-02-07 14:54:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-02-07 14:54:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:54:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 14:54:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:54:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 14:54:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 14:54:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 14:54:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 14:54:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-02-07 14:54:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-02-07 14:54:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-02-07 14:54:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-02-07 14:54:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:54:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:54:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:54:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:54:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:54:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:54:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-02-07 14:54:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-02-07 14:54:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:54:47,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:54:47,267 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:54:47,450 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:54:47,452 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:54:47,807 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:54:47,807 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:54:48,026 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:54:48,026 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-02-07 14:54:48,027 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:48 BoogieIcfgContainer [2024-02-07 14:54:48,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:54:48,031 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:54:48,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:54:48,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:54:48,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:54:46" (1/4) ... [2024-02-07 14:54:48,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b553a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:54:48, skipping insertion in model container [2024-02-07 14:54:48,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:46" (2/4) ... [2024-02-07 14:54:48,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b553a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:54:48, skipping insertion in model container [2024-02-07 14:54:48,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46" (3/4) ... [2024-02-07 14:54:48,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b553a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:54:48, skipping insertion in model container [2024-02-07 14:54:48,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:48" (4/4) ... [2024-02-07 14:54:48,042 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2024-02-07 14:54:48,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:54:48,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-02-07 14:54:48,059 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:54:48,130 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 14:54:48,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 97 transitions, 214 flow [2024-02-07 14:54:48,275 INFO L124 PetriNetUnfolderBase]: 37/191 cut-off events. [2024-02-07 14:54:48,275 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-02-07 14:54:48,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 191 events. 37/191 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 758 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 96. Up to 8 conditions per place. [2024-02-07 14:54:48,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 97 transitions, 214 flow [2024-02-07 14:54:48,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 97 transitions, 214 flow [2024-02-07 14:54:48,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:48,299 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;@677e2bac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:48,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-02-07 14:54:48,302 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:48,302 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-02-07 14:54:48,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:48,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:48,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:54:48,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2024-02-07 14:54:48,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash 727119, now seen corresponding path program 1 times [2024-02-07 14:54:48,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:48,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388772352] [2024-02-07 14:54:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:48,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:48,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:48,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388772352] [2024-02-07 14:54:48,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388772352] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:48,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:48,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:54:48,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183611258] [2024-02-07 14:54:48,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:54:48,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:48,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:54:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:54:48,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 97 [2024-02-07 14:54:48,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:48,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:48,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 97 [2024-02-07 14:54:48,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:49,650 INFO L124 PetriNetUnfolderBase]: 3879/7335 cut-off events. [2024-02-07 14:54:49,651 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-02-07 14:54:49,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13574 conditions, 7335 events. 3879/7335 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 47264 event pairs, 3636 based on Foata normal form. 596/6935 useless extension candidates. Maximal degree in co-relation 11848. Up to 6142 conditions per place. [2024-02-07 14:54:49,696 INFO L140 encePairwiseOnDemand]: 80/97 looper letters, 61 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-02-07 14:54:49,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 320 flow [2024-02-07 14:54:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:54:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:54:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-02-07 14:54:49,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154639175257731 [2024-02-07 14:54:49,713 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 214 flow. Second operand 3 states and 150 transitions. [2024-02-07 14:54:49,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 320 flow [2024-02-07 14:54:49,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:49,728 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 206 flow [2024-02-07 14:54:49,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2024-02-07 14:54:49,733 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-02-07 14:54:49,733 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 206 flow [2024-02-07 14:54:49,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:49,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:49,735 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-07 14:54:49,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:54:49,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2024-02-07 14:54:49,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:49,736 INFO L85 PathProgramCache]: Analyzing trace with hash 187481236, now seen corresponding path program 1 times [2024-02-07 14:54:49,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:49,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849689804] [2024-02-07 14:54:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:49,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:49,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:49,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849689804] [2024-02-07 14:54:49,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849689804] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:54:49,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857871588] [2024-02-07 14:54:49,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:49,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:49,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:49,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:54:50,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:54:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:50,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 14:54:50,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:50,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:54:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:50,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857871588] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:54:50,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:54:50,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 4 [2024-02-07 14:54:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907466535] [2024-02-07 14:54:50,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:54:50,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:54:50,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:54:50,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:54:50,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 97 [2024-02-07 14:54:50,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:50,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:50,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 97 [2024-02-07 14:54:50,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:51,022 INFO L124 PetriNetUnfolderBase]: 3879/7337 cut-off events. [2024-02-07 14:54:51,023 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-02-07 14:54:51,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13588 conditions, 7337 events. 3879/7337 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 47259 event pairs, 3636 based on Foata normal form. 4/6347 useless extension candidates. Maximal degree in co-relation 13571. Up to 6137 conditions per place. [2024-02-07 14:54:51,063 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 61 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-02-07 14:54:51,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 346 flow [2024-02-07 14:54:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:54:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:54:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-02-07 14:54:51,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36254295532646047 [2024-02-07 14:54:51,066 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 206 flow. Second operand 6 states and 211 transitions. [2024-02-07 14:54:51,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 346 flow [2024-02-07 14:54:51,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:54:51,069 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 219 flow [2024-02-07 14:54:51,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2024-02-07 14:54:51,070 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 6 predicate places. [2024-02-07 14:54:51,070 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 219 flow [2024-02-07 14:54:51,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:51,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:51,070 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:51,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:54:51,284 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 [2024-02-07 14:54:51,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2024-02-07 14:54:51,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1739516856, now seen corresponding path program 1 times [2024-02-07 14:54:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595518403] [2024-02-07 14:54:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:51,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595518403] [2024-02-07 14:54:51,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595518403] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:54:51,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890474240] [2024-02-07 14:54:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:51,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:51,510 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) [2024-02-07 14:54:51,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 14:54:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:51,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 14:54:51,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:51,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:54:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:51,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890474240] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:54:51,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:54:51,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-02-07 14:54:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380910937] [2024-02-07 14:54:51,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:54:51,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-07 14:54:51,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:51,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-07 14:54:51,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-02-07 14:54:51,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 97 [2024-02-07 14:54:51,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 219 flow. Second operand has 11 states, 11 states have (on average 25.636363636363637) internal successors, (282), 11 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:51,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:51,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 97 [2024-02-07 14:54:51,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:52,808 INFO L124 PetriNetUnfolderBase]: 3879/7352 cut-off events. [2024-02-07 14:54:52,808 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-02-07 14:54:52,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13649 conditions, 7352 events. 3879/7352 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 47258 event pairs, 3636 based on Foata normal form. 5/6363 useless extension candidates. Maximal degree in co-relation 13552. Up to 6138 conditions per place. [2024-02-07 14:54:52,845 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 72 selfloop transitions, 10 changer transitions 0/105 dead transitions. [2024-02-07 14:54:52,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 465 flow [2024-02-07 14:54:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:54:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:54:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-02-07 14:54:52,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3268041237113402 [2024-02-07 14:54:52,848 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 219 flow. Second operand 10 states and 317 transitions. [2024-02-07 14:54:52,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 105 transitions, 465 flow [2024-02-07 14:54:52,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 105 transitions, 443 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-02-07 14:54:52,851 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 283 flow [2024-02-07 14:54:52,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=283, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2024-02-07 14:54:52,852 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 18 predicate places. [2024-02-07 14:54:52,852 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 283 flow [2024-02-07 14:54:52,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 25.636363636363637) internal successors, (282), 11 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:52,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:52,853 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:52,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 14:54:53,086 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 [2024-02-07 14:54:53,086 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2024-02-07 14:54:53,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1174242493, now seen corresponding path program 2 times [2024-02-07 14:54:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334067417] [2024-02-07 14:54:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:53,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:53,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:53,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334067417] [2024-02-07 14:54:53,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334067417] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:54:53,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343665034] [2024-02-07 14:54:53,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:54:53,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:53,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:53,368 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) [2024-02-07 14:54:53,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 14:54:53,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-07 14:54:53,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:54:53,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 14:54:53,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-02-07 14:54:53,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 14:54:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343665034] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:53,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 14:54:53,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 12 [2024-02-07 14:54:53,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882763736] [2024-02-07 14:54:53,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:53,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:54:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:54:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-02-07 14:54:53,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 97 [2024-02-07 14:54:53,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:53,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:53,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 97 [2024-02-07 14:54:53,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:54,279 INFO L124 PetriNetUnfolderBase]: 3917/6730 cut-off events. [2024-02-07 14:54:54,280 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-02-07 14:54:54,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13284 conditions, 6730 events. 3917/6730 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 41575 event pairs, 412 based on Foata normal form. 0/5713 useless extension candidates. Maximal degree in co-relation 13184. Up to 5462 conditions per place. [2024-02-07 14:54:54,311 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 110 selfloop transitions, 1 changer transitions 0/135 dead transitions. [2024-02-07 14:54:54,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 135 transitions, 600 flow [2024-02-07 14:54:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:54:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:54:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-02-07 14:54:54,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6116838487972509 [2024-02-07 14:54:54,312 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 283 flow. Second operand 3 states and 178 transitions. [2024-02-07 14:54:54,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 135 transitions, 600 flow [2024-02-07 14:54:54,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 135 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:54:54,318 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 277 flow [2024-02-07 14:54:54,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2024-02-07 14:54:54,318 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 16 predicate places. [2024-02-07 14:54:54,319 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 277 flow [2024-02-07 14:54:54,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:54,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:54,319 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:54,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 14:54:54,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:54,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2024-02-07 14:54:54,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:54,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1174239776, now seen corresponding path program 1 times [2024-02-07 14:54:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:54,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452795509] [2024-02-07 14:54:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:54,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:54,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452795509] [2024-02-07 14:54:54,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452795509] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:54:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228357509] [2024-02-07 14:54:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:54,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:54,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:54,801 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) [2024-02-07 14:54:54,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-07 14:54:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:55,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-07 14:54:55,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:55,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:54:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228357509] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:54:55,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:54:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-02-07 14:54:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520150881] [2024-02-07 14:54:55,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:54:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-07 14:54:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-07 14:54:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-02-07 14:54:55,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 97 [2024-02-07 14:54:55,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 277 flow. Second operand has 21 states, 21 states have (on average 25.80952380952381) internal successors, (542), 21 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:55,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:55,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 97 [2024-02-07 14:54:55,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:56,077 INFO L124 PetriNetUnfolderBase]: 3989/7678 cut-off events. [2024-02-07 14:54:56,077 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2024-02-07 14:54:56,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14589 conditions, 7678 events. 3989/7678 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 50104 event pairs, 3761 based on Foata normal form. 10/6624 useless extension candidates. Maximal degree in co-relation 14351. Up to 6382 conditions per place. [2024-02-07 14:54:56,110 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 92 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2024-02-07 14:54:56,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 133 transitions, 751 flow [2024-02-07 14:54:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-07 14:54:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-07 14:54:56,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 582 transitions. [2024-02-07 14:54:56,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-02-07 14:54:56,112 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 277 flow. Second operand 20 states and 582 transitions. [2024-02-07 14:54:56,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 133 transitions, 751 flow [2024-02-07 14:54:56,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 133 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:54:56,116 INFO L231 Difference]: Finished difference. Result has 128 places, 101 transitions, 461 flow [2024-02-07 14:54:56,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=461, PETRI_PLACES=128, PETRI_TRANSITIONS=101} [2024-02-07 14:54:56,117 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 45 predicate places. [2024-02-07 14:54:56,117 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 101 transitions, 461 flow [2024-02-07 14:54:56,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 25.80952380952381) internal successors, (542), 21 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:56,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:56,118 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:56,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-02-07 14:54:56,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:56,331 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2024-02-07 14:54:56,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1049896768, now seen corresponding path program 2 times [2024-02-07 14:54:56,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:56,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432541752] [2024-02-07 14:54:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:56,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:57,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:57,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432541752] [2024-02-07 14:54:57,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432541752] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:54:57,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582135088] [2024-02-07 14:54:57,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:54:57,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:57,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:57,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:54:57,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-07 14:54:57,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-07 14:54:57,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:54:57,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-07 14:54:57,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-02-07 14:54:57,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 14:54:57,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582135088] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:57,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 14:54:57,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [20] total 23 [2024-02-07 14:54:57,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428649031] [2024-02-07 14:54:57,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:57,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:57,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:57,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:57,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2024-02-07 14:54:57,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 97 [2024-02-07 14:54:57,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 101 transitions, 461 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:57,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:57,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 97 [2024-02-07 14:54:57,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:57,523 INFO L124 PetriNetUnfolderBase]: 22/119 cut-off events. [2024-02-07 14:54:57,523 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2024-02-07 14:54:57,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 119 events. 22/119 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 169 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 389. Up to 45 conditions per place. [2024-02-07 14:54:57,524 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 38 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-02-07 14:54:57,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 45 transitions, 414 flow [2024-02-07 14:54:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:54:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:54:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-02-07 14:54:57,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3247422680412371 [2024-02-07 14:54:57,525 INFO L175 Difference]: Start difference. First operand has 128 places, 101 transitions, 461 flow. Second operand 4 states and 126 transitions. [2024-02-07 14:54:57,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 45 transitions, 414 flow [2024-02-07 14:54:57,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 45 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-07 14:54:57,528 INFO L231 Difference]: Finished difference. Result has 65 places, 37 transitions, 307 flow [2024-02-07 14:54:57,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=65, PETRI_TRANSITIONS=37} [2024-02-07 14:54:57,529 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -18 predicate places. [2024-02-07 14:54:57,529 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 37 transitions, 307 flow [2024-02-07 14:54:57,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:57,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:57,530 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 18, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:57,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-07 14:54:57,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:57,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2024-02-07 14:54:57,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash 366542675, now seen corresponding path program 1 times [2024-02-07 14:54:57,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:57,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753044822] [2024-02-07 14:54:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:57,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:54:58,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:58,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753044822] [2024-02-07 14:54:58,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753044822] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:54:58,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53376956] [2024-02-07 14:54:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:58,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:58,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:58,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:54:58,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-07 14:54:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:58,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 20 conjunts are in the unsatisfiable core [2024-02-07 14:54:58,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:54:59,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:54:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:54:59,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53376956] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:54:59,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:54:59,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2024-02-07 14:54:59,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408707580] [2024-02-07 14:54:59,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:54:59,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-02-07 14:54:59,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-02-07 14:54:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2024-02-07 14:54:59,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 97 [2024-02-07 14:54:59,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 37 transitions, 307 flow. Second operand has 41 states, 41 states have (on average 25.926829268292682) internal successors, (1063), 41 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:59,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:59,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 97 [2024-02-07 14:54:59,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:59,809 INFO L124 PetriNetUnfolderBase]: 22/173 cut-off events. [2024-02-07 14:54:59,809 INFO L125 PetriNetUnfolderBase]: For 2413/2413 co-relation queries the response was YES. [2024-02-07 14:54:59,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 173 events. 22/173 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 117 event pairs, 21 based on Foata normal form. 20/193 useless extension candidates. Maximal degree in co-relation 744. Up to 57 conditions per place. [2024-02-07 14:54:59,810 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 88 selfloop transitions, 40 changer transitions 0/129 dead transitions. [2024-02-07 14:54:59,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 1292 flow [2024-02-07 14:54:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-02-07 14:54:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-02-07 14:54:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1068 transitions. [2024-02-07 14:54:59,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2752577319587629 [2024-02-07 14:54:59,815 INFO L175 Difference]: Start difference. First operand has 65 places, 37 transitions, 307 flow. Second operand 40 states and 1068 transitions. [2024-02-07 14:54:59,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 1292 flow [2024-02-07 14:54:59,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 129 transitions, 1289 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:54:59,820 INFO L231 Difference]: Finished difference. Result has 123 places, 58 transitions, 743 flow [2024-02-07 14:54:59,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=743, PETRI_PLACES=123, PETRI_TRANSITIONS=58} [2024-02-07 14:54:59,822 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 40 predicate places. [2024-02-07 14:54:59,822 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 58 transitions, 743 flow [2024-02-07 14:54:59,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 25.926829268292682) internal successors, (1063), 41 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:59,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:59,824 INFO L208 CegarLoopForPetriNet]: trace histogram [38, 38, 38, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:59,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-07 14:55:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:00,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2024-02-07 14:55:00,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash 844457107, now seen corresponding path program 2 times [2024-02-07 14:55:00,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:00,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523565802] [2024-02-07 14:55:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:00,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:55:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2149 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:55:02,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:55:02,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523565802] [2024-02-07 14:55:02,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523565802] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:55:02,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833443575] [2024-02-07 14:55:02,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:55:02,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:02,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:55:02,291 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:55:02,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-07 14:55:02,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:55:02,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:55:02,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 40 conjunts are in the unsatisfiable core [2024-02-07 14:55:02,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:55:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2149 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:55:03,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:55:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2149 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:55:04,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833443575] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:55:04,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:55:04,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 80 [2024-02-07 14:55:04,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441698005] [2024-02-07 14:55:04,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:55:04,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-02-07 14:55:04,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:55:04,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-02-07 14:55:04,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2024-02-07 14:55:04,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 97 [2024-02-07 14:55:04,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 58 transitions, 743 flow. Second operand has 81 states, 81 states have (on average 25.962962962962962) internal successors, (2103), 81 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:04,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:55:04,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 97 [2024-02-07 14:55:04,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:55:05,162 INFO L124 PetriNetUnfolderBase]: 22/294 cut-off events. [2024-02-07 14:55:05,163 INFO L125 PetriNetUnfolderBase]: For 22306/22306 co-relation queries the response was YES. [2024-02-07 14:55:05,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 294 events. 22/294 cut-off events. For 22306/22306 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 21 based on Foata normal form. 40/334 useless extension candidates. Maximal degree in co-relation 1686. Up to 81 conditions per place. [2024-02-07 14:55:05,165 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 168 selfloop transitions, 80 changer transitions 0/249 dead transitions. [2024-02-07 14:55:05,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 249 transitions, 3173 flow [2024-02-07 14:55:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-02-07 14:55:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2024-02-07 14:55:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 2128 transitions. [2024-02-07 14:55:05,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27422680412371137 [2024-02-07 14:55:05,171 INFO L175 Difference]: Start difference. First operand has 123 places, 58 transitions, 743 flow. Second operand 80 states and 2128 transitions. [2024-02-07 14:55:05,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 249 transitions, 3173 flow [2024-02-07 14:55:05,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 249 transitions, 3139 flow, removed 0 selfloop flow, removed 17 redundant places. [2024-02-07 14:55:05,190 INFO L231 Difference]: Finished difference. Result has 226 places, 99 transitions, 1732 flow [2024-02-07 14:55:05,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=1732, PETRI_PLACES=226, PETRI_TRANSITIONS=99} [2024-02-07 14:55:05,191 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 143 predicate places. [2024-02-07 14:55:05,191 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 99 transitions, 1732 flow [2024-02-07 14:55:05,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 25.962962962962962) internal successors, (2103), 81 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:05,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:55:05,193 INFO L208 CegarLoopForPetriNet]: trace histogram [78, 78, 78, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 14:55:05,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-07 14:55:05,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:05,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2024-02-07 14:55:05,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:05,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1473122067, now seen corresponding path program 3 times [2024-02-07 14:55:05,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:05,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855298333] [2024-02-07 14:55:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:55:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9089 backedges. 0 proven. 9087 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:55:12,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:55:12,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855298333] [2024-02-07 14:55:12,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855298333] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:55:12,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726073602] [2024-02-07 14:55:12,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 14:55:12,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:12,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:55:12,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:55:12,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15