./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_72-funloop_hard_racing.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_72-funloop_hard_racing.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:32:23,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:32:23,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:32:23,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:32:23,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:32:23,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:32:23,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:32:23,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:32:23,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:32:23,256 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:32:23,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:32:23,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:32:23,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:32:23,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:32:23,259 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:32:23,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:32:23,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:32:23,260 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:32:23,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:32:23,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:32:23,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:32:23,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:32:23,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:32:23,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:32:23,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:32:23,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:32:23,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:32:23,262 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:32:23,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:32:23,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:32:23,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:32:23,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:32:23,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:32:23,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:32:23,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:32:23,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:32:23,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:32:23,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:32:23,265 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:32:23,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:32:23,265 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:32:23,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:32:23,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:32:23,266 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:32:23,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:32:23,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:32:23,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:32:23,520 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:32:23,520 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:32:23,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-02-07 19:32:24,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:32:24,890 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:32:24,891 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-02-07 19:32:24,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7778a6745/561d93840c804abe948a9174a9607aa0/FLAGafac431f5 [2024-02-07 19:32:25,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7778a6745/561d93840c804abe948a9174a9607aa0 [2024-02-07 19:32:25,206 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:32:25,207 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:32:25,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_72-funloop_hard_racing.yml/witness.yml [2024-02-07 19:32:25,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:32:25,308 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:32:25,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:32:25,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:32:25,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:32:25,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:32:25" (1/2) ... [2024-02-07 19:32:25,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e151640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:25, skipping insertion in model container [2024-02-07 19:32:25,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:32:25" (1/2) ... [2024-02-07 19:32:25,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6cc72a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:25, skipping insertion in model container [2024-02-07 19:32:25,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:25" (2/2) ... [2024-02-07 19:32:25,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e151640 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:32:25, skipping insertion in model container [2024-02-07 19:32:25,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:25" (2/2) ... [2024-02-07 19:32:25,322 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:32:25,358 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:32:25,359 INFO L76 edCorrectnessWitness]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-02-07 19:32:25,360 INFO L76 edCorrectnessWitness]: Location invariant before [L953-L953] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:25,360 INFO L76 edCorrectnessWitness]: Location invariant before [L946-L946] ((((((((i == 9 || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:25,360 INFO L76 edCorrectnessWitness]: Location invariant before [L954-L954] ((((((((i == 9 || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:25,360 INFO L76 edCorrectnessWitness]: Location invariant after [L958-L958] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:25,360 INFO L76 edCorrectnessWitness]: Location invariant after [L946-L946] ((((((((i == 9 || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:25,361 INFO L76 edCorrectnessWitness]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-02-07 19:32:25,361 INFO L76 edCorrectnessWitness]: Location invariant before [L958-L958] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:25,361 INFO L76 edCorrectnessWitness]: Location invariant after [L953-L953] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:25,361 INFO L76 edCorrectnessWitness]: Location invariant before [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-02-07 19:32:25,361 INFO L76 edCorrectnessWitness]: Location invariant before [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-02-07 19:32:25,361 INFO L76 edCorrectnessWitness]: Location invariant after [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-02-07 19:32:25,361 INFO L76 edCorrectnessWitness]: Location invariant after [L954-L954] ((((((((i == 9 || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:25,362 INFO L76 edCorrectnessWitness]: Location invariant before [L941-L941] ((((((((((((((((((entry == & cache[0] || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9]) || entry == & cache[0]) || entry == & cache[1]) || entry == & cache[2]) || entry == & cache[3]) || entry == & cache[4]) || entry == & cache[5]) || entry == & cache[6]) || entry == & cache[7]) || entry == & cache[8]) || entry == & cache[9] [2024-02-07 19:32:25,362 INFO L76 edCorrectnessWitness]: Location invariant before [L951-L951] ((((((((i == 9 || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:25,406 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:32:25,778 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2024-02-07 19:32:25,812 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:32:25,829 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:32:25,866 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:32:26,074 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:32:26,132 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:32:26,133 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:32:26 WrapperNode [2024-02-07 19:32:26,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:32:26,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:32:26,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:32:26,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:32:26,140 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,156 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,187 INFO L138 Inliner]: procedures = 272, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 296 [2024-02-07 19:32:26,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:32:26,190 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:32:26,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:32:26,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:32:26,199 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,200 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,204 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,221 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 5, 16, 2]. 64 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 8 writes are split as follows [0, 0, 7, 1]. [2024-02-07 19:32:26,221 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,221 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,233 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,247 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,262 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,264 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:32:26,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:32:26,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:32:26,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:32:26,273 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 07:32:26" (1/1) ... [2024-02-07 19:32:26,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:32:26,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:26,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 19:32:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:32:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:32:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:32:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:32:26,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 19:32:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:32:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:32:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:32:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:32:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:32:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:32:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:32:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:32:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:32:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:32:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:32:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:32:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:32:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:32:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:32:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:32:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:32:26,364 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:32:26,498 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:32:26,500 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:32:26,847 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:32:26,847 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:32:26,970 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:32:26,970 INFO L320 CfgBuilder]: Removed 35 assume(true) statements. [2024-02-07 19:32:26,971 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:32:26 BoogieIcfgContainer [2024-02-07 19:32:26,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:32:26,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:32:26,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:32:26,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:32:26,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:32:25" (1/4) ... [2024-02-07 19:32:26,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd7aed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:32:26, skipping insertion in model container [2024-02-07 19:32:26,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:25" (2/4) ... [2024-02-07 19:32:26,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd7aed7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:32:26, skipping insertion in model container [2024-02-07 19:32:26,979 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 07:32:26" (3/4) ... [2024-02-07 19:32:26,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd7aed7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:32:26, skipping insertion in model container [2024-02-07 19:32:26,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:32:26" (4/4) ... [2024-02-07 19:32:26,981 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2024-02-07 19:32:26,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:32:26,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-02-07 19:32:26,996 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:32:27,053 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:32:27,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 153 transitions, 313 flow [2024-02-07 19:32:27,208 INFO L124 PetriNetUnfolderBase]: 65/244 cut-off events. [2024-02-07 19:32:27,209 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:32:27,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 244 events. 65/244 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1181 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2024-02-07 19:32:27,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 153 transitions, 313 flow [2024-02-07 19:32:27,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 152 transitions, 311 flow [2024-02-07 19:32:27,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:27,272 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;@1d124888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:27,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-02-07 19:32:27,275 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:27,284 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-02-07 19:32:27,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:27,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:27,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:32:27,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-07 19:32:27,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:27,324 INFO L85 PathProgramCache]: Analyzing trace with hash 753722, now seen corresponding path program 1 times [2024-02-07 19:32:27,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:27,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385074362] [2024-02-07 19:32:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:27,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:27,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385074362] [2024-02-07 19:32:27,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385074362] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:27,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:27,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:32:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347263894] [2024-02-07 19:32:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:27,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:32:27,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:32:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:32:27,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 153 [2024-02-07 19:32:27,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 152 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:27,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:27,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 153 [2024-02-07 19:32:27,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:27,914 INFO L124 PetriNetUnfolderBase]: 906/2609 cut-off events. [2024-02-07 19:32:27,914 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:32:27,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4324 conditions, 2609 events. 906/2609 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 20356 event pairs, 760 based on Foata normal form. 568/2908 useless extension candidates. Maximal degree in co-relation 4187. Up to 1709 conditions per place. [2024-02-07 19:32:27,930 INFO L140 encePairwiseOnDemand]: 116/153 looper letters, 67 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2024-02-07 19:32:27,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 385 flow [2024-02-07 19:32:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:32:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:32:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-02-07 19:32:27,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599128540305011 [2024-02-07 19:32:27,947 INFO L175 Difference]: Start difference. First operand has 116 places, 152 transitions, 311 flow. Second operand 3 states and 257 transitions. [2024-02-07 19:32:27,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 385 flow [2024-02-07 19:32:27,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 120 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:32:27,954 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 259 flow [2024-02-07 19:32:27,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2024-02-07 19:32:27,959 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2024-02-07 19:32:27,959 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 259 flow [2024-02-07 19:32:27,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:27,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:27,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-02-07 19:32:27,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:32:27,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-07 19:32:27,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash 724354048, now seen corresponding path program 1 times [2024-02-07 19:32:27,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:27,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137206992] [2024-02-07 19:32:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:27,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:28,173 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 19:32:28,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:28,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137206992] [2024-02-07 19:32:28,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137206992] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:28,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067408359] [2024-02-07 19:32:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:28,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:28,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:32:28,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:32:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:28,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 19:32:28,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:28,267 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 19:32:28,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:28,275 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 19:32:28,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067408359] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:28,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:28,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 4 [2024-02-07 19:32:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354020643] [2024-02-07 19:32:28,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:28,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:32:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:32:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:32:28,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 153 [2024-02-07 19:32:28,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 51.333333333333336) internal successors, (308), 6 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:28,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:28,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 153 [2024-02-07 19:32:28,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:28,587 INFO L124 PetriNetUnfolderBase]: 906/2611 cut-off events. [2024-02-07 19:32:28,588 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:32:28,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4338 conditions, 2611 events. 906/2611 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 20357 event pairs, 760 based on Foata normal form. 2/2345 useless extension candidates. Maximal degree in co-relation 4324. Up to 1706 conditions per place. [2024-02-07 19:32:28,598 INFO L140 encePairwiseOnDemand]: 148/153 looper letters, 67 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2024-02-07 19:32:28,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 123 transitions, 411 flow [2024-02-07 19:32:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:32:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:32:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 377 transitions. [2024-02-07 19:32:28,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106753812636166 [2024-02-07 19:32:28,601 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 259 flow. Second operand 6 states and 377 transitions. [2024-02-07 19:32:28,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 123 transitions, 411 flow [2024-02-07 19:32:28,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 123 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:32:28,603 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 276 flow [2024-02-07 19:32:28,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2024-02-07 19:32:28,604 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 7 predicate places. [2024-02-07 19:32:28,604 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 276 flow [2024-02-07 19:32:28,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.333333333333336) internal successors, (308), 6 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:28,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:28,605 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:28,624 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 19:32:28,821 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 19:32:28,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-07 19:32:28,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:28,822 INFO L85 PathProgramCache]: Analyzing trace with hash 457894796, now seen corresponding path program 1 times [2024-02-07 19:32:28,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569424579] [2024-02-07 19:32:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:28,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:28,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:28,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569424579] [2024-02-07 19:32:28,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569424579] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:28,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27004979] [2024-02-07 19:32:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:28,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:28,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:28,890 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 19:32:28,915 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 19:32:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:28,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 19:32:28,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:28,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:29,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27004979] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:29,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:29,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-02-07 19:32:29,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348858307] [2024-02-07 19:32:29,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:29,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-07 19:32:29,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:29,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-07 19:32:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-02-07 19:32:29,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 153 [2024-02-07 19:32:29,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 276 flow. Second operand has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:29,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:29,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 153 [2024-02-07 19:32:29,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:29,325 INFO L124 PetriNetUnfolderBase]: 906/2621 cut-off events. [2024-02-07 19:32:29,325 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 19:32:29,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4389 conditions, 2621 events. 906/2621 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 20336 event pairs, 760 based on Foata normal form. 5/2358 useless extension candidates. Maximal degree in co-relation 4309. Up to 1707 conditions per place. [2024-02-07 19:32:29,335 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 73 selfloop transitions, 10 changer transitions 0/133 dead transitions. [2024-02-07 19:32:29,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 510 flow [2024-02-07 19:32:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 19:32:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 19:32:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 588 transitions. [2024-02-07 19:32:29,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843137254901961 [2024-02-07 19:32:29,337 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 276 flow. Second operand 10 states and 588 transitions. [2024-02-07 19:32:29,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 510 flow [2024-02-07 19:32:29,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 133 transitions, 488 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-02-07 19:32:29,340 INFO L231 Difference]: Finished difference. Result has 135 places, 127 transitions, 340 flow [2024-02-07 19:32:29,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=340, PETRI_PLACES=135, PETRI_TRANSITIONS=127} [2024-02-07 19:32:29,341 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 19 predicate places. [2024-02-07 19:32:29,341 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 127 transitions, 340 flow [2024-02-07 19:32:29,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:29,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:29,342 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:29,353 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 19:32:29,553 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 19:32:29,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-07 19:32:29,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:29,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2064699758, now seen corresponding path program 2 times [2024-02-07 19:32:29,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:29,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127347922] [2024-02-07 19:32:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:29,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127347922] [2024-02-07 19:32:29,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127347922] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334313538] [2024-02-07 19:32:29,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:32:29,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:29,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:29,683 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 19:32:29,708 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 19:32:29,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-07 19:32:29,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:32:29,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-07 19:32:29,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-02-07 19:32:29,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 19:32:29,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334313538] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:29,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 19:32:29,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-02-07 19:32:29,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009991429] [2024-02-07 19:32:29,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:29,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:29,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:29,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:29,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2024-02-07 19:32:29,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 153 [2024-02-07 19:32:29,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 127 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:29,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:29,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 153 [2024-02-07 19:32:29,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:29,870 INFO L124 PetriNetUnfolderBase]: 63/198 cut-off events. [2024-02-07 19:32:29,870 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-02-07 19:32:29,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 198 events. 63/198 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 711 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 331. Up to 120 conditions per place. [2024-02-07 19:32:29,871 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 53 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-02-07 19:32:29,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 345 flow [2024-02-07 19:32:29,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2024-02-07 19:32:29,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-02-07 19:32:29,872 INFO L175 Difference]: Start difference. First operand has 135 places, 127 transitions, 340 flow. Second operand 4 states and 255 transitions. [2024-02-07 19:32:29,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 345 flow [2024-02-07 19:32:29,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:32:29,879 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 193 flow [2024-02-07 19:32:29,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-02-07 19:32:29,880 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, -49 predicate places. [2024-02-07 19:32:29,880 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 193 flow [2024-02-07 19:32:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:29,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:29,881 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:29,896 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 19:32:30,096 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 19:32:30,097 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-07 19:32:30,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash -98397925, now seen corresponding path program 1 times [2024-02-07 19:32:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808599526] [2024-02-07 19:32:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:30,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:32:30,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:30,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808599526] [2024-02-07 19:32:30,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808599526] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:30,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856702552] [2024-02-07 19:32:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:30,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:30,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:30,244 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 19:32:30,250 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 19:32:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:30,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-07 19:32:30,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:32:30,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:32:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856702552] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:30,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:30,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2024-02-07 19:32:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009402001] [2024-02-07 19:32:30,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:30,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-07 19:32:30,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-07 19:32:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-02-07 19:32:30,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 153 [2024-02-07 19:32:30,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 193 flow. Second operand has 13 states, 13 states have (on average 52.23076923076923) internal successors, (679), 13 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:30,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:30,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 153 [2024-02-07 19:32:30,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:30,567 INFO L124 PetriNetUnfolderBase]: 66/235 cut-off events. [2024-02-07 19:32:30,568 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-02-07 19:32:30,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 235 events. 66/235 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 816 event pairs, 57 based on Foata normal form. 2/225 useless extension candidates. Maximal degree in co-relation 385. Up to 145 conditions per place. [2024-02-07 19:32:30,569 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 35 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-02-07 19:32:30,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 359 flow [2024-02-07 19:32:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 19:32:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 19:32:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 649 transitions. [2024-02-07 19:32:30,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35348583877995643 [2024-02-07 19:32:30,571 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 193 flow. Second operand 12 states and 649 transitions. [2024-02-07 19:32:30,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 359 flow [2024-02-07 19:32:30,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 65 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:32:30,574 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 255 flow [2024-02-07 19:32:30,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=255, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2024-02-07 19:32:30,575 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, -37 predicate places. [2024-02-07 19:32:30,575 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 255 flow [2024-02-07 19:32:30,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.23076923076923) internal successors, (679), 13 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:30,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:30,575 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:30,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-07 19:32:30,788 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 19:32:30,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-07 19:32:30,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash -96509297, now seen corresponding path program 2 times [2024-02-07 19:32:30,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:30,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724556593] [2024-02-07 19:32:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:30,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:30,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:32:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:30,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:32:30,847 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:32:30,848 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-02-07 19:32:30,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 20 remaining) [2024-02-07 19:32:30,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 20 remaining) [2024-02-07 19:32:30,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 20 remaining) [2024-02-07 19:32:30,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 20 remaining) [2024-02-07 19:32:30,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 20 remaining) [2024-02-07 19:32:30,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 20 remaining) [2024-02-07 19:32:30,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (12 of 20 remaining) [2024-02-07 19:32:30,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (11 of 20 remaining) [2024-02-07 19:32:30,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 20 remaining) [2024-02-07 19:32:30,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 20 remaining) [2024-02-07 19:32:30,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 20 remaining) [2024-02-07 19:32:30,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 20 remaining) [2024-02-07 19:32:30,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 20 remaining) [2024-02-07 19:32:30,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONERROR_FUNCTION (5 of 20 remaining) [2024-02-07 19:32:30,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 20 remaining) [2024-02-07 19:32:30,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 20 remaining) [2024-02-07 19:32:30,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 20 remaining) [2024-02-07 19:32:30,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 20 remaining) [2024-02-07 19:32:30,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 20 remaining) [2024-02-07 19:32:30,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:32:30,852 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-02-07 19:32:30,854 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:32:30,854 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:32:30,891 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 19:32:30,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 203 transitions, 422 flow [2024-02-07 19:32:30,923 INFO L124 PetriNetUnfolderBase]: 105/398 cut-off events. [2024-02-07 19:32:30,923 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 19:32:30,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 398 events. 105/398 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2173 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 246. Up to 12 conditions per place. [2024-02-07 19:32:30,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 203 transitions, 422 flow [2024-02-07 19:32:30,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 203 transitions, 422 flow [2024-02-07 19:32:30,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:30,934 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;@1d124888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:30,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-02-07 19:32:30,935 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:30,935 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-02-07 19:32:30,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:30,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:30,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:32:30,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:32:30,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:30,935 INFO L85 PathProgramCache]: Analyzing trace with hash 955301, now seen corresponding path program 1 times [2024-02-07 19:32:30,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:30,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812941665] [2024-02-07 19:32:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:30,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:30,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:30,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812941665] [2024-02-07 19:32:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812941665] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:30,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:30,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:32:30,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847063347] [2024-02-07 19:32:30,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:30,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:32:30,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:30,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:32:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:32:30,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2024-02-07 19:32:30,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 203 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:30,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:30,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2024-02-07 19:32:30,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:36,292 INFO L124 PetriNetUnfolderBase]: 36330/72777 cut-off events. [2024-02-07 19:32:36,292 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-02-07 19:32:36,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125348 conditions, 72777 events. 36330/72777 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 2112. Compared 771356 event pairs, 31673 based on Foata normal form. 17741/82842 useless extension candidates. Maximal degree in co-relation 91460. Up to 52463 conditions per place. [2024-02-07 19:32:36,737 INFO L140 encePairwiseOnDemand]: 155/203 looper letters, 90 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2024-02-07 19:32:36,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 160 transitions, 520 flow [2024-02-07 19:32:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:32:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:32:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2024-02-07 19:32:36,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615763546798029 [2024-02-07 19:32:36,739 INFO L175 Difference]: Start difference. First operand has 154 places, 203 transitions, 422 flow. Second operand 3 states and 342 transitions. [2024-02-07 19:32:36,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 160 transitions, 520 flow [2024-02-07 19:32:36,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 160 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:32:36,744 INFO L231 Difference]: Finished difference. Result has 157 places, 160 transitions, 348 flow [2024-02-07 19:32:36,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=157, PETRI_TRANSITIONS=160} [2024-02-07 19:32:36,746 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 3 predicate places. [2024-02-07 19:32:36,746 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 160 transitions, 348 flow [2024-02-07 19:32:36,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:36,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:36,746 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-02-07 19:32:36,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:32:36,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:32:36,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:36,748 INFO L85 PathProgramCache]: Analyzing trace with hash 918077963, now seen corresponding path program 1 times [2024-02-07 19:32:36,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:36,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323727242] [2024-02-07 19:32:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:36,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:36,819 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 19:32:36,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:36,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323727242] [2024-02-07 19:32:36,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323727242] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:36,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734881642] [2024-02-07 19:32:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:36,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:36,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:36,821 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 19:32:36,844 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 19:32:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:36,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 19:32:36,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:36,906 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 19:32:36,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:36,910 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 19:32:36,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734881642] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:36,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:36,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 4 [2024-02-07 19:32:36,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717723070] [2024-02-07 19:32:36,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:36,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:32:36,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:36,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:32:36,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:32:36,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 203 [2024-02-07 19:32:36,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 160 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:36,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:36,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 203 [2024-02-07 19:32:36,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:42,110 INFO L124 PetriNetUnfolderBase]: 36330/72779 cut-off events. [2024-02-07 19:32:42,111 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-02-07 19:32:42,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125362 conditions, 72779 events. 36330/72779 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 2112. Compared 771414 event pairs, 31673 based on Foata normal form. 2/65106 useless extension candidates. Maximal degree in co-relation 125347. Up to 52460 conditions per place. [2024-02-07 19:32:42,533 INFO L140 encePairwiseOnDemand]: 198/203 looper letters, 90 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2024-02-07 19:32:42,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 163 transitions, 546 flow [2024-02-07 19:32:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:32:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:32:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 502 transitions. [2024-02-07 19:32:42,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121510673234811 [2024-02-07 19:32:42,536 INFO L175 Difference]: Start difference. First operand has 157 places, 160 transitions, 348 flow. Second operand 6 states and 502 transitions. [2024-02-07 19:32:42,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 163 transitions, 546 flow [2024-02-07 19:32:42,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:32:42,540 INFO L231 Difference]: Finished difference. Result has 161 places, 161 transitions, 365 flow [2024-02-07 19:32:42,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=161, PETRI_TRANSITIONS=161} [2024-02-07 19:32:42,542 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 7 predicate places. [2024-02-07 19:32:42,542 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 161 transitions, 365 flow [2024-02-07 19:32:42,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:42,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:42,542 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:42,559 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 19:32:42,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:42,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:32:42,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1192726524, now seen corresponding path program 1 times [2024-02-07 19:32:42,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:42,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405532728] [2024-02-07 19:32:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:42,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:42,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405532728] [2024-02-07 19:32:42,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405532728] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:42,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787068970] [2024-02-07 19:32:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:42,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:42,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:42,811 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 19:32:42,826 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 19:32:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:42,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 19:32:42,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:42,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:42,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787068970] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:42,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:42,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-02-07 19:32:42,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497495773] [2024-02-07 19:32:42,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:42,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-07 19:32:42,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-07 19:32:42,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-02-07 19:32:42,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 203 [2024-02-07 19:32:42,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 161 transitions, 365 flow. Second operand has 11 states, 11 states have (on average 69.0) internal successors, (759), 11 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:42,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:42,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 203 [2024-02-07 19:32:42,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:48,927 INFO L124 PetriNetUnfolderBase]: 36330/72789 cut-off events. [2024-02-07 19:32:48,927 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-02-07 19:32:49,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125413 conditions, 72789 events. 36330/72789 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 2112. Compared 771335 event pairs, 31673 based on Foata normal form. 5/65119 useless extension candidates. Maximal degree in co-relation 125332. Up to 52461 conditions per place. [2024-02-07 19:32:49,494 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 96 selfloop transitions, 10 changer transitions 0/173 dead transitions. [2024-02-07 19:32:49,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 173 transitions, 645 flow [2024-02-07 19:32:49,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 19:32:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 19:32:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 781 transitions. [2024-02-07 19:32:49,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3847290640394089 [2024-02-07 19:32:49,519 INFO L175 Difference]: Start difference. First operand has 161 places, 161 transitions, 365 flow. Second operand 10 states and 781 transitions. [2024-02-07 19:32:49,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 173 transitions, 645 flow [2024-02-07 19:32:49,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 173 transitions, 623 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-02-07 19:32:49,523 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 429 flow [2024-02-07 19:32:49,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=429, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2024-02-07 19:32:49,523 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 19 predicate places. [2024-02-07 19:32:49,524 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 429 flow [2024-02-07 19:32:49,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.0) internal successors, (759), 11 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:49,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:49,524 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:49,536 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 19:32:49,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:49,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:32:49,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1181889726, now seen corresponding path program 2 times [2024-02-07 19:32:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:49,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285442794] [2024-02-07 19:32:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:49,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285442794] [2024-02-07 19:32:49,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285442794] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535164453] [2024-02-07 19:32:49,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:32:49,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:49,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:49,951 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 19:32:49,952 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 19:32:50,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-07 19:32:50,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:32:50,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-07 19:32:50,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-02-07 19:32:50,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 19:32:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535164453] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:50,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 19:32:50,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-02-07 19:32:50,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493629181] [2024-02-07 19:32:50,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:50,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:50,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:50,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:50,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2024-02-07 19:32:50,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2024-02-07 19:32:50,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 429 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:50,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:50,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2024-02-07 19:32:50,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:55,528 INFO L124 PetriNetUnfolderBase]: 35219/64449 cut-off events. [2024-02-07 19:32:55,528 INFO L125 PetriNetUnfolderBase]: For 523/523 co-relation queries the response was YES. [2024-02-07 19:32:55,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116098 conditions, 64449 events. 35219/64449 cut-off events. For 523/523 co-relation queries the response was YES. Maximal size of possible extension queue 1970. Compared 632161 event pairs, 331 based on Foata normal form. 0/57530 useless extension candidates. Maximal degree in co-relation 116014. Up to 50508 conditions per place. [2024-02-07 19:32:56,171 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 159 selfloop transitions, 3 changer transitions 0/231 dead transitions. [2024-02-07 19:32:56,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 231 transitions, 881 flow [2024-02-07 19:32:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:56,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2024-02-07 19:32:56,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295566502463054 [2024-02-07 19:32:56,174 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 429 flow. Second operand 4 states and 430 transitions. [2024-02-07 19:32:56,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 231 transitions, 881 flow [2024-02-07 19:32:56,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 231 transitions, 877 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:32:56,184 INFO L231 Difference]: Finished difference. Result has 176 places, 168 transitions, 443 flow [2024-02-07 19:32:56,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=176, PETRI_TRANSITIONS=168} [2024-02-07 19:32:56,184 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 22 predicate places. [2024-02-07 19:32:56,185 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 168 transitions, 443 flow [2024-02-07 19:32:56,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:56,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:56,185 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 2, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:56,196 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 19:32:56,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:56,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:32:56,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1501401557, now seen corresponding path program 1 times [2024-02-07 19:32:56,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:56,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346871437] [2024-02-07 19:32:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:56,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-02-07 19:32:56,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:56,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346871437] [2024-02-07 19:32:56,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346871437] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:56,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44114395] [2024-02-07 19:32:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:56,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:56,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:56,573 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 19:32:56,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-07 19:32:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:56,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-07 19:32:56,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-02-07 19:32:56,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-02-07 19:32:56,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44114395] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:56,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:56,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2024-02-07 19:32:56,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078540836] [2024-02-07 19:32:56,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:56,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-07 19:32:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-07 19:32:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-02-07 19:32:56,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 203 [2024-02-07 19:32:56,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 168 transitions, 443 flow. Second operand has 13 states, 13 states have (on average 69.3076923076923) internal successors, (901), 13 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:32:56,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:56,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 203 [2024-02-07 19:32:56,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:33:02,530 INFO L124 PetriNetUnfolderBase]: 35537/69555 cut-off events. [2024-02-07 19:33:02,530 INFO L125 PetriNetUnfolderBase]: For 1796/1796 co-relation queries the response was YES. [2024-02-07 19:33:02,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122385 conditions, 69555 events. 35537/69555 cut-off events. For 1796/1796 co-relation queries the response was YES. Maximal size of possible extension queue 2106. Compared 720586 event pairs, 31028 based on Foata normal form. 2/62546 useless extension candidates. Maximal degree in co-relation 122269. Up to 50981 conditions per place. [2024-02-07 19:33:03,040 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 99 selfloop transitions, 12 changer transitions 0/178 dead transitions. [2024-02-07 19:33:03,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 178 transitions, 737 flow [2024-02-07 19:33:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 19:33:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 19:33:03,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 916 transitions. [2024-02-07 19:33:03,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760262725779967 [2024-02-07 19:33:03,044 INFO L175 Difference]: Start difference. First operand has 176 places, 168 transitions, 443 flow. Second operand 12 states and 916 transitions. [2024-02-07 19:33:03,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 178 transitions, 737 flow [2024-02-07 19:33:03,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 178 transitions, 735 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:33:03,047 INFO L231 Difference]: Finished difference. Result has 189 places, 171 transitions, 506 flow [2024-02-07 19:33:03,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=506, PETRI_PLACES=189, PETRI_TRANSITIONS=171} [2024-02-07 19:33:03,048 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 35 predicate places. [2024-02-07 19:33:03,048 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 171 transitions, 506 flow [2024-02-07 19:33:03,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 69.3076923076923) internal successors, (901), 13 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:33:03,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:33:03,048 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:33:03,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-07 19:33:03,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-02-07 19:33:03,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:33:03,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:33:03,261 INFO L85 PathProgramCache]: Analyzing trace with hash -956293793, now seen corresponding path program 2 times [2024-02-07 19:33:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:33:03,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734124746] [2024-02-07 19:33:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:33:03,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:33:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:33:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-02-07 19:33:03,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:33:03,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734124746] [2024-02-07 19:33:03,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734124746] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:33:03,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865475705] [2024-02-07 19:33:03,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:33:03,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:33:03,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:33:03,365 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:33:03,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-07 19:33:03,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 19:33:03,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:33:03,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 19:33:03,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:33:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-02-07 19:33:03,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:33:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-02-07 19:33:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865475705] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:33:03,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:33:03,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-02-07 19:33:03,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737570661] [2024-02-07 19:33:03,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:33:03,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:33:03,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:33:03,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:33:03,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:33:03,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2024-02-07 19:33:03,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 171 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:33:03,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:33:03,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2024-02-07 19:33:03,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:33:04,245 INFO L124 PetriNetUnfolderBase]: 2986/6174 cut-off events. [2024-02-07 19:33:04,245 INFO L125 PetriNetUnfolderBase]: For 1968/1968 co-relation queries the response was YES. [2024-02-07 19:33:04,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11363 conditions, 6174 events. 2986/6174 cut-off events. For 1968/1968 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 46118 event pairs, 930 based on Foata normal form. 800/6525 useless extension candidates. Maximal degree in co-relation 11238. Up to 3600 conditions per place. [2024-02-07 19:33:04,279 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 118 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2024-02-07 19:33:04,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 160 transitions, 714 flow [2024-02-07 19:33:04,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:33:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:33:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2024-02-07 19:33:04,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44729064039408867 [2024-02-07 19:33:04,281 INFO L175 Difference]: Start difference. First operand has 189 places, 171 transitions, 506 flow. Second operand 5 states and 454 transitions. [2024-02-07 19:33:04,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 160 transitions, 714 flow [2024-02-07 19:33:04,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 160 transitions, 696 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-07 19:33:04,285 INFO L231 Difference]: Finished difference. Result has 115 places, 97 transitions, 334 flow [2024-02-07 19:33:04,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=115, PETRI_TRANSITIONS=97} [2024-02-07 19:33:04,285 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, -39 predicate places. [2024-02-07 19:33:04,285 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 97 transitions, 334 flow [2024-02-07 19:33:04,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:33:04,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:33:04,286 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 3, 2, 2, 1, 1, 1, 1, 1] [2024-02-07 19:33:04,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-07 19:33:04,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:33:04,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 19:33:04,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:33:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 124698204, now seen corresponding path program 1 times [2024-02-07 19:33:04,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:33:04,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387157198] [2024-02-07 19:33:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:33:04,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:33:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:33:04,522 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:33:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:33:04,545 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:33:04,548 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:33:04,548 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-02-07 19:33:04,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 25 remaining) [2024-02-07 19:33:04,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 25 remaining) [2024-02-07 19:33:04,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 25 remaining) [2024-02-07 19:33:04,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 25 remaining) [2024-02-07 19:33:04,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 25 remaining) [2024-02-07 19:33:04,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 25 remaining) [2024-02-07 19:33:04,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (17 of 25 remaining) [2024-02-07 19:33:04,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (16 of 25 remaining) [2024-02-07 19:33:04,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 25 remaining) [2024-02-07 19:33:04,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 25 remaining) [2024-02-07 19:33:04,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 25 remaining) [2024-02-07 19:33:04,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 25 remaining) [2024-02-07 19:33:04,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 25 remaining) [2024-02-07 19:33:04,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONERROR_FUNCTION (10 of 25 remaining) [2024-02-07 19:33:04,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 25 remaining) [2024-02-07 19:33:04,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 25 remaining) [2024-02-07 19:33:04,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 25 remaining) [2024-02-07 19:33:04,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 25 remaining) [2024-02-07 19:33:04,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONERROR_FUNCTION (5 of 25 remaining) [2024-02-07 19:33:04,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 25 remaining) [2024-02-07 19:33:04,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 25 remaining) [2024-02-07 19:33:04,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 25 remaining) [2024-02-07 19:33:04,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 25 remaining) [2024-02-07 19:33:04,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 25 remaining) [2024-02-07 19:33:04,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 19:33:04,551 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-02-07 19:33:04,551 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:33:04,551 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:33:04,590 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 19:33:04,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 253 transitions, 533 flow [2024-02-07 19:33:04,629 INFO L124 PetriNetUnfolderBase]: 148/567 cut-off events. [2024-02-07 19:33:04,630 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 19:33:04,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 567 events. 148/567 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3268 event pairs, 1 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2024-02-07 19:33:04,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 253 transitions, 533 flow [2024-02-07 19:33:04,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 253 transitions, 533 flow [2024-02-07 19:33:04,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:33:04,645 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;@1d124888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:33:04,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-02-07 19:33:04,646 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:33:04,646 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-02-07 19:33:04,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:33:04,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:33:04,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:33:04,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 19:33:04,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:33:04,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1206530, now seen corresponding path program 1 times [2024-02-07 19:33:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:33:04,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996804820] [2024-02-07 19:33:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:33:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:33:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:33:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:33:04,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:33:04,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996804820] [2024-02-07 19:33:04,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996804820] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:33:04,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:33:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:33:04,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814083675] [2024-02-07 19:33:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:33:04,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:33:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:33:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:33:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:33:04,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 253 [2024-02-07 19:33:04,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 253 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:33:04,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:33:04,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 253 [2024-02-07 19:33:04,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand