./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_36-indirect_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_36-indirect_racefree.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:26:57,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:26:57,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:26:57,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:26:57,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:26:57,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:26:57,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:26:57,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:26:57,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:26:57,391 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:26:57,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:26:57,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:26:57,393 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:26:57,394 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:26:57,394 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:26:57,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:26:57,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:26:57,395 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:26:57,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:26:57,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:26:57,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:26:57,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:26:57,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:26:57,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:26:57,396 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:26:57,396 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:26:57,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:26:57,397 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:26:57,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:26:57,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:26:57,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:26:57,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:26:57,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:26:57,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:26:57,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:26:57,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:26:57,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:26:57,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:26:57,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:26:57,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:26:57,400 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:26:57,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:26:57,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:26:57,400 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:26:57,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:26:57,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:26:57,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:26:57,649 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:26:57,649 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:26:57,650 INFO L431 ainManager$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_36-indirect_racefree.yml/witness.yml [2024-02-07 14:26:57,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:26:57,750 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:26:57,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2024-02-07 14:26:58,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:26:58,878 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:26:58,879 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2024-02-07 14:26:58,894 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abbfb3646/793849b7caa5440eb42305bef99165a6/FLAG27b2ce199 [2024-02-07 14:26:58,904 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abbfb3646/793849b7caa5440eb42305bef99165a6 [2024-02-07 14:26:58,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:26:58,906 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:26:58,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:26:58,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:26:58,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:26:58,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:26:57" (1/2) ... [2024-02-07 14:26:58,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182c9bc4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:58, skipping insertion in model container [2024-02-07 14:26:58,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:26:57" (1/2) ... [2024-02-07 14:26:58,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d0bfb7a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:58, skipping insertion in model container [2024-02-07 14:26:58,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:26:58" (2/2) ... [2024-02-07 14:26:58,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182c9bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:58, skipping insertion in model container [2024-02-07 14:26:58,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:26:58" (2/2) ... [2024-02-07 14:26:58,918 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:26:58,956 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:26:58,958 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] ((g == 0) && (g2 == & g)) && (*g2 == 0) [2024-02-07 14:26:58,958 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] g == 0 [2024-02-07 14:26:58,958 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((g == 1) && (g1 == & g)) && (*g1 == 1) [2024-02-07 14:26:58,958 INFO L76 edCorrectnessWitness]: Location invariant before [L709-L709] ((((((((((((((((((((((((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)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 14:26:58,958 INFO L76 edCorrectnessWitness]: Location invariant after [L709-L709] ((((((((((((((((((((((((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)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 14:26:58,959 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] g == 0 [2024-02-07 14:26:58,959 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] g == 1 [2024-02-07 14:26:58,959 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((g == 0) && (g1 == & g)) && (*g1 == 0) [2024-02-07 14:26:58,959 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((g == 1) && (g1 == & g)) && (*g1 == 1) [2024-02-07 14:26:58,959 INFO L76 edCorrectnessWitness]: Location invariant after [L711-L711] ((g == 0) && (g2 == & g)) && (*g2 == 0) [2024-02-07 14:26:58,960 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6 [2024-02-07 14:26:58,960 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] g == 1 [2024-02-07 14:26:58,960 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((g == 0) && (g1 == & g)) && (*g1 == 0) [2024-02-07 14:26:58,960 INFO L76 edCorrectnessWitness]: Location invariant after [L713-L713] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6 [2024-02-07 14:26:59,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:26:59,255 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_36-indirect_racefree.i[30176,30189] [2024-02-07 14:26:59,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:26:59,293 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:26:59,324 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_36-indirect_racefree.i[30176,30189] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:26:59,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:26:59,389 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:26:59,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59 WrapperNode [2024-02-07 14:26:59,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:26:59,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:26:59,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:26:59,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:26:59,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,430 INFO L138 Inliner]: procedures = 171, calls = 50, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2024-02-07 14:26:59,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:26:59,431 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:26:59,431 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:26:59,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:26:59,439 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,455 INFO L175 MemorySlicer]: Split 28 memory accesses to 5 slices as follows [2, 5, 14, 5, 2]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5, 0]. The 3 writes are split as follows [0, 0, 2, 0, 1]. [2024-02-07 14:26:59,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:26:59,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:26:59,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:26:59,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:26:59,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (1/1) ... [2024-02-07 14:26:59,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:26:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:26:59,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:26:59,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:26:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:26:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:26:59,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:26:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:26:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:26:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:26:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:26:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:26:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:26:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:26:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:26:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:26:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:26:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:26:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:26:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:26:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:26:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:26:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:26:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:26:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:26:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:26:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:26:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:26:59,610 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:26:59,715 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:26:59,717 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:26:59,929 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:26:59,929 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:27:00,064 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:27:00,065 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-02-07 14:27:00,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:00 BoogieIcfgContainer [2024-02-07 14:27:00,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:27:00,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:27:00,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:27:00,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:27:00,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:26:57" (1/4) ... [2024-02-07 14:27:00,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1e38c8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:27:00, skipping insertion in model container [2024-02-07 14:27:00,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:26:58" (2/4) ... [2024-02-07 14:27:00,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1e38c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:27:00, skipping insertion in model container [2024-02-07 14:27:00,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:59" (3/4) ... [2024-02-07 14:27:00,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1e38c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:27:00, skipping insertion in model container [2024-02-07 14:27:00,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:00" (4/4) ... [2024-02-07 14:27:00,075 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2024-02-07 14:27:00,089 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:27:00,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-02-07 14:27:00,090 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:27:00,135 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:27:00,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 63 transitions, 133 flow [2024-02-07 14:27:00,214 INFO L124 PetriNetUnfolderBase]: 13/85 cut-off events. [2024-02-07 14:27:00,214 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:27:00,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 85 events. 13/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 288 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2024-02-07 14:27:00,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 63 transitions, 133 flow [2024-02-07 14:27:00,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 62 transitions, 131 flow [2024-02-07 14:27:00,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:00,250 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;@15392ff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:00,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-02-07 14:27:00,255 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:00,255 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:27:00,255 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:00,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:00,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:00,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2024-02-07 14:27:00,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 387712395, now seen corresponding path program 1 times [2024-02-07 14:27:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:00,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945129549] [2024-02-07 14:27:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:00,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:00,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945129549] [2024-02-07 14:27:00,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945129549] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:00,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:00,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485393675] [2024-02-07 14:27:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:00,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:00,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:00,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-02-07 14:27:00,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:00,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:00,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-02-07 14:27:00,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:00,606 INFO L124 PetriNetUnfolderBase]: 39/123 cut-off events. [2024-02-07 14:27:00,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:00,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 123 events. 39/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 348 event pairs, 0 based on Foata normal form. 15/134 useless extension candidates. Maximal degree in co-relation 200. Up to 81 conditions per place. [2024-02-07 14:27:00,608 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 30 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-02-07 14:27:00,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 158 flow [2024-02-07 14:27:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-02-07 14:27:00,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198412698412699 [2024-02-07 14:27:00,619 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 131 flow. Second operand 4 states and 131 transitions. [2024-02-07 14:27:00,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 158 flow [2024-02-07 14:27:00,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 158 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:00,623 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 70 flow [2024-02-07 14:27:00,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-02-07 14:27:00,627 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -19 predicate places. [2024-02-07 14:27:00,627 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 70 flow [2024-02-07 14:27:00,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:00,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:00,628 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 14:27:00,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:27:00,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2024-02-07 14:27:00,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1070530851, now seen corresponding path program 1 times [2024-02-07 14:27:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:00,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835531605] [2024-02-07 14:27:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:00,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:27:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:00,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:27:00,712 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:27:00,714 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-02-07 14:27:00,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 13 remaining) [2024-02-07 14:27:00,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 13 remaining) [2024-02-07 14:27:00,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2024-02-07 14:27:00,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 13 remaining) [2024-02-07 14:27:00,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 13 remaining) [2024-02-07 14:27:00,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 13 remaining) [2024-02-07 14:27:00,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 13 remaining) [2024-02-07 14:27:00,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 13 remaining) [2024-02-07 14:27:00,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 13 remaining) [2024-02-07 14:27:00,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 13 remaining) [2024-02-07 14:27:00,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 13 remaining) [2024-02-07 14:27:00,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 13 remaining) [2024-02-07 14:27:00,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:27:00,724 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 14:27:00,727 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:27:00,727 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 14:27:00,755 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:27:00,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 96 transitions, 208 flow [2024-02-07 14:27:00,794 INFO L124 PetriNetUnfolderBase]: 24/153 cut-off events. [2024-02-07 14:27:00,794 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 14:27:00,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 153 events. 24/153 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 636 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2024-02-07 14:27:00,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 96 transitions, 208 flow [2024-02-07 14:27:00,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 96 transitions, 208 flow [2024-02-07 14:27:00,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:00,805 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;@15392ff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:00,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-02-07 14:27:00,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:00,807 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:27:00,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:00,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:00,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:00,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:27:00,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:00,809 INFO L85 PathProgramCache]: Analyzing trace with hash 479355466, now seen corresponding path program 1 times [2024-02-07 14:27:00,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:00,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171376830] [2024-02-07 14:27:00,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:00,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:00,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:00,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171376830] [2024-02-07 14:27:00,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171376830] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:00,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:00,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:00,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511150477] [2024-02-07 14:27:00,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:00,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:00,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:00,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:00,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:00,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 96 [2024-02-07 14:27:00,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 96 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:00,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:00,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 96 [2024-02-07 14:27:00,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:01,908 INFO L124 PetriNetUnfolderBase]: 5812/10949 cut-off events. [2024-02-07 14:27:01,909 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-02-07 14:27:01,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20178 conditions, 10949 events. 5812/10949 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 87454 event pairs, 209 based on Foata normal form. 2188/12190 useless extension candidates. Maximal degree in co-relation 16568. Up to 8677 conditions per place. [2024-02-07 14:27:01,970 INFO L140 encePairwiseOnDemand]: 77/96 looper letters, 88 selfloop transitions, 3 changer transitions 0/124 dead transitions. [2024-02-07 14:27:01,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 124 transitions, 446 flow [2024-02-07 14:27:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-02-07 14:27:01,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6744791666666666 [2024-02-07 14:27:01,976 INFO L175 Difference]: Start difference. First operand has 84 places, 96 transitions, 208 flow. Second operand 4 states and 259 transitions. [2024-02-07 14:27:01,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 124 transitions, 446 flow [2024-02-07 14:27:01,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:01,981 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 196 flow [2024-02-07 14:27:01,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-02-07 14:27:01,982 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2024-02-07 14:27:01,983 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 196 flow [2024-02-07 14:27:01,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:01,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:01,983 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 14:27:01,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:27:01,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:27:01,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash -309959458, now seen corresponding path program 1 times [2024-02-07 14:27:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:01,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282659434] [2024-02-07 14:27:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:02,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282659434] [2024-02-07 14:27:02,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282659434] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:27:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526631947] [2024-02-07 14:27:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:02,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:27:02,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:27:02,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:27:02,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:27:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:02,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 14:27:02,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:27:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:02,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:27:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:02,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526631947] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:27:02,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:27:02,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:27:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238381047] [2024-02-07 14:27:02,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:27:02,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:27:02,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:02,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:27:02,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:27:02,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 96 [2024-02-07 14:27:02,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:02,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:02,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 96 [2024-02-07 14:27:02,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:02,619 INFO L124 PetriNetUnfolderBase]: 1313/2548 cut-off events. [2024-02-07 14:27:02,619 INFO L125 PetriNetUnfolderBase]: For 661/661 co-relation queries the response was YES. [2024-02-07 14:27:02,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5175 conditions, 2548 events. 1313/2548 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 16040 event pairs, 192 based on Foata normal form. 392/2867 useless extension candidates. Maximal degree in co-relation 4698. Up to 1680 conditions per place. [2024-02-07 14:27:02,632 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 72 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-02-07 14:27:02,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 370 flow [2024-02-07 14:27:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-02-07 14:27:02,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-02-07 14:27:02,634 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 196 flow. Second operand 5 states and 242 transitions. [2024-02-07 14:27:02,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 370 flow [2024-02-07 14:27:02,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 100 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:27:02,636 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 136 flow [2024-02-07 14:27:02,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-02-07 14:27:02,638 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -16 predicate places. [2024-02-07 14:27:02,639 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 136 flow [2024-02-07 14:27:02,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:02,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:02,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:02,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:27:02,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:27:02,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:27:02,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1688178545, now seen corresponding path program 1 times [2024-02-07 14:27:02,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:02,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491471409] [2024-02-07 14:27:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:02,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:02,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:02,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491471409] [2024-02-07 14:27:02,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491471409] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:02,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:02,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:02,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694890154] [2024-02-07 14:27:02,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:02,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:02,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:02,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:02,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 96 [2024-02-07 14:27:02,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:02,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:02,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 96 [2024-02-07 14:27:02,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:03,272 INFO L124 PetriNetUnfolderBase]: 1445/3012 cut-off events. [2024-02-07 14:27:03,272 INFO L125 PetriNetUnfolderBase]: For 727/727 co-relation queries the response was YES. [2024-02-07 14:27:03,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5674 conditions, 3012 events. 1445/3012 cut-off events. For 727/727 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 19363 event pairs, 497 based on Foata normal form. 0/2935 useless extension candidates. Maximal degree in co-relation 4623. Up to 2123 conditions per place. [2024-02-07 14:27:03,284 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 63 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2024-02-07 14:27:03,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 371 flow [2024-02-07 14:27:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-02-07 14:27:03,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48541666666666666 [2024-02-07 14:27:03,286 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 136 flow. Second operand 5 states and 233 transitions. [2024-02-07 14:27:03,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 371 flow [2024-02-07 14:27:03,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 359 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:27:03,288 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 171 flow [2024-02-07 14:27:03,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-02-07 14:27:03,289 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -12 predicate places. [2024-02-07 14:27:03,289 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 171 flow [2024-02-07 14:27:03,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:03,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:03,289 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 14:27:03,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:27:03,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:27:03,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:03,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1518280305, now seen corresponding path program 1 times [2024-02-07 14:27:03,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:03,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199031389] [2024-02-07 14:27:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:03,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:03,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:27:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:03,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:27:03,315 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:27:03,315 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-02-07 14:27:03,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 17 remaining) [2024-02-07 14:27:03,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 17 remaining) [2024-02-07 14:27:03,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (13 of 17 remaining) [2024-02-07 14:27:03,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 17 remaining) [2024-02-07 14:27:03,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 17 remaining) [2024-02-07 14:27:03,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 17 remaining) [2024-02-07 14:27:03,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 17 remaining) [2024-02-07 14:27:03,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 17 remaining) [2024-02-07 14:27:03,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 17 remaining) [2024-02-07 14:27:03,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 17 remaining) [2024-02-07 14:27:03,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 17 remaining) [2024-02-07 14:27:03,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 17 remaining) [2024-02-07 14:27:03,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 17 remaining) [2024-02-07 14:27:03,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 17 remaining) [2024-02-07 14:27:03,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 17 remaining) [2024-02-07 14:27:03,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 17 remaining) [2024-02-07 14:27:03,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:27:03,317 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-02-07 14:27:03,318 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:27:03,318 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 14:27:03,341 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 14:27:03,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 129 transitions, 285 flow [2024-02-07 14:27:03,357 INFO L124 PetriNetUnfolderBase]: 38/236 cut-off events. [2024-02-07 14:27:03,357 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 14:27:03,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 236 events. 38/236 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1087 event pairs, 1 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 166. Up to 12 conditions per place. [2024-02-07 14:27:03,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 129 transitions, 285 flow [2024-02-07 14:27:03,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 129 transitions, 285 flow [2024-02-07 14:27:03,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:03,362 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;@15392ff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:03,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-02-07 14:27:03,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:03,363 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:27:03,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:03,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:03,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:03,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2024-02-07 14:27:03,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash 602490602, now seen corresponding path program 1 times [2024-02-07 14:27:03,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:03,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770867104] [2024-02-07 14:27:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:03,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:03,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770867104] [2024-02-07 14:27:03,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770867104] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:03,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:03,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:03,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818703543] [2024-02-07 14:27:03,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:03,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:03,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:03,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:03,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:03,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 129 [2024-02-07 14:27:03,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 129 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:03,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:03,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 129 [2024-02-07 14:27:03,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:18,244 INFO L124 PetriNetUnfolderBase]: 130240/214946 cut-off events. [2024-02-07 14:27:18,244 INFO L125 PetriNetUnfolderBase]: For 2367/2367 co-relation queries the response was YES. [2024-02-07 14:27:18,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396359 conditions, 214946 events. 130240/214946 cut-off events. For 2367/2367 co-relation queries the response was YES. Maximal size of possible extension queue 4343. Compared 2070789 event pairs, 84775 based on Foata normal form. 45216/248153 useless extension candidates. Maximal degree in co-relation 22944. Up to 179431 conditions per place. [2024-02-07 14:27:19,689 INFO L140 encePairwiseOnDemand]: 104/129 looper letters, 104 selfloop transitions, 3 changer transitions 0/152 dead transitions. [2024-02-07 14:27:19,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 152 transitions, 545 flow [2024-02-07 14:27:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2024-02-07 14:27:19,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375968992248062 [2024-02-07 14:27:19,692 INFO L175 Difference]: Start difference. First operand has 112 places, 129 transitions, 285 flow. Second operand 4 states and 329 transitions. [2024-02-07 14:27:19,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 152 transitions, 545 flow [2024-02-07 14:27:19,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 152 transitions, 545 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:19,703 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 265 flow [2024-02-07 14:27:19,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2024-02-07 14:27:19,705 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 5 predicate places. [2024-02-07 14:27:19,706 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 265 flow [2024-02-07 14:27:19,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:19,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:19,708 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 14:27:19,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:27:19,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2024-02-07 14:27:19,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash -271120867, now seen corresponding path program 1 times [2024-02-07 14:27:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:19,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015173875] [2024-02-07 14:27:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:19,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:19,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015173875] [2024-02-07 14:27:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015173875] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:27:19,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975059945] [2024-02-07 14:27:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:19,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:27:19,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:27:19,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:27:19,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 14:27:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:19,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 14:27:19,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:27:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:19,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:27:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:19,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975059945] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:27:19,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:27:19,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:27:19,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161177427] [2024-02-07 14:27:19,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:27:19,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:27:19,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:19,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:27:19,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:27:19,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 129 [2024-02-07 14:27:19,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:19,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:19,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 129 [2024-02-07 14:27:19,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:33,028 INFO L124 PetriNetUnfolderBase]: 126768/199805 cut-off events. [2024-02-07 14:27:33,028 INFO L125 PetriNetUnfolderBase]: For 15252/15252 co-relation queries the response was YES. [2024-02-07 14:27:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387382 conditions, 199805 events. 126768/199805 cut-off events. For 15252/15252 co-relation queries the response was YES. Maximal size of possible extension queue 4215. Compared 1854684 event pairs, 252 based on Foata normal form. 392/192434 useless extension candidates. Maximal degree in co-relation 115026. Up to 164675 conditions per place. [2024-02-07 14:27:34,362 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 144 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2024-02-07 14:27:34,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 193 transitions, 727 flow [2024-02-07 14:27:34,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2024-02-07 14:27:34,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-02-07 14:27:34,364 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 265 flow. Second operand 5 states and 375 transitions. [2024-02-07 14:27:34,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 193 transitions, 727 flow [2024-02-07 14:27:34,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 193 transitions, 727 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:34,378 INFO L231 Difference]: Finished difference. Result has 122 places, 110 transitions, 279 flow [2024-02-07 14:27:34,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2024-02-07 14:27:34,379 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 10 predicate places. [2024-02-07 14:27:34,379 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 279 flow [2024-02-07 14:27:34,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:34,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:34,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:34,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 14:27:34,592 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,SelfDestructingSolverStorable7 [2024-02-07 14:27:34,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2024-02-07 14:27:34,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash -378888176, now seen corresponding path program 1 times [2024-02-07 14:27:34,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:34,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742927242] [2024-02-07 14:27:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:34,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:34,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:34,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742927242] [2024-02-07 14:27:34,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742927242] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:34,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:34,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762274163] [2024-02-07 14:27:34,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:34,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:34,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:34,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:34,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 129 [2024-02-07 14:27:34,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 110 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:34,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:34,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 129 [2024-02-07 14:27:34,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand