./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_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_46-escape_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_46-escape_racefree.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_46-escape_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 14:27:18,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:27:18,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:27:18,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:27:18,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:27:18,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:27:18,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:27:18,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:27:18,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:27:18,486 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:27:18,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:27:18,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:27:18,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:27:18,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:27:18,489 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:27:18,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:27:18,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:27:18,490 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:27:18,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:27:18,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:27:18,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:27:18,491 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:27:18,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:27:18,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:27:18,492 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:27:18,492 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:27:18,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:27:18,493 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:27:18,493 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:27:18,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:27:18,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:27:18,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:27:18,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:27:18,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:27:18,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:27:18,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:27:18,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:27:18,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:27:18,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:27:18,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:27:18,496 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:27:18,496 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:27:18,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:27:18,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:27:18,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:27:18,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:27:18,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:27:18,738 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:27:18,739 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:27:18,740 INFO L431 ainManager$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_46-escape_racefree.yml/witness.yml [2024-02-07 14:27:18,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:27:18,860 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:27:18,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2024-02-07 14:27:19,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:27:20,115 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:27:20,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2024-02-07 14:27:20,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed312cb6e/d29757975ac84f61ac5f8a38066faa7b/FLAG99c3003e7 [2024-02-07 14:27:20,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed312cb6e/d29757975ac84f61ac5f8a38066faa7b [2024-02-07 14:27:20,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:27:20,143 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:27:20,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:27:20,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:27:20,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:27:20,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:18" (1/2) ... [2024-02-07 14:27:20,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cd2b34 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:20, skipping insertion in model container [2024-02-07 14:27:20,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:18" (1/2) ... [2024-02-07 14:27:20,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62b0a538 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:20, skipping insertion in model container [2024-02-07 14:27:20,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:20" (2/2) ... [2024-02-07 14:27:20,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cd2b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20, skipping insertion in model container [2024-02-07 14:27:20,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:20" (2/2) ... [2024-02-07 14:27:20,152 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:27:20,205 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:27:20,206 INFO L76 edCorrectnessWitness]: Location invariant after [L700-L700] ((0 <= *((int *)arg)) && (*((int *)arg) <= 1)) && (*((int *)arg) == 0 || *((int *)arg) == 1) [2024-02-07 14:27:20,206 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] (arg == p) && (*p == 1) [2024-02-07 14:27:20,206 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] arg == p [2024-02-07 14:27:20,206 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] arg == p [2024-02-07 14:27:20,207 INFO L76 edCorrectnessWitness]: Location invariant before [L704-L704] arg == p [2024-02-07 14:27:20,207 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] arg == p [2024-02-07 14:27:20,207 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] (arg == p) && (*p == 0) [2024-02-07 14:27:20,207 INFO L76 edCorrectnessWitness]: Location invariant before [L701-L701] (((0 <= *p) && (*p <= 1)) && (arg == p)) && (*p == 0 || *p == 1) [2024-02-07 14:27:20,208 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] arg == p [2024-02-07 14:27:20,208 INFO L76 edCorrectnessWitness]: Location invariant before [L709-L709] (0 == i) && (i == 0) [2024-02-07 14:27:20,208 INFO L76 edCorrectnessWitness]: Location invariant after [L711-L711] i == 0 [2024-02-07 14:27:20,208 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] arg == p [2024-02-07 14:27:20,208 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] (arg == p) && (*p == 1) [2024-02-07 14:27:20,208 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] (arg == p) && (*p == 0) [2024-02-07 14:27:20,208 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] arg == p [2024-02-07 14:27:20,209 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] arg == p [2024-02-07 14:27:20,209 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] i == 0 [2024-02-07 14:27:20,209 INFO L76 edCorrectnessWitness]: Location invariant before [L700-L700] ((0 <= *((int *)arg)) && (*((int *)arg) <= 1)) && (*((int *)arg) == 0 || *((int *)arg) == 1) [2024-02-07 14:27:20,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:27:20,480 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_46-escape_racefree.i[30176,30189] [2024-02-07 14:27:20,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:27:20,529 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:27:20,554 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_46-escape_racefree.i[30176,30189] [2024-02-07 14:27:20,556 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:27:20,556 WARN L423 MainDispatcher]: Unable to annotate *p = (int *) arg with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:27:20,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:27:20,641 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:27:20,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20 WrapperNode [2024-02-07 14:27:20,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:27:20,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:27:20,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:27:20,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:27:20,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,695 INFO L138 Inliner]: procedures = 171, calls = 53, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2024-02-07 14:27:20,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:27:20,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:27:20,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:27:20,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:27:20,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,720 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,739 INFO L175 MemorySlicer]: Split 29 memory accesses to 5 slices as follows [2, 5, 5, 15, 2]. 52 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 5, 1, 0]. The 3 writes are split as follows [0, 0, 0, 2, 1]. [2024-02-07 14:27:20,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,747 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:27:20,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:27:20,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:27:20,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:27:20,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (1/1) ... [2024-02-07 14:27:20,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:27:20,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:27:20,799 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 14:27:20,809 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 14:27:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:27:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:27:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:27:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:27:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:27:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:27:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:27:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:27:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:27:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:27:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:27:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:27:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:27:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:27:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:27:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:27:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:27:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:27:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:27:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:27:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:27:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:27:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:27:20,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:27:20,861 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 14:27:21,017 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:27:21,019 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:27:21,270 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:27:21,271 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:27:21,403 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:27:21,403 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-07 14:27:21,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:21 BoogieIcfgContainer [2024-02-07 14:27:21,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:27:21,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:27:21,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:27:21,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:27:21,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:18" (1/4) ... [2024-02-07 14:27:21,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7daa74 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:27:21, skipping insertion in model container [2024-02-07 14:27:21,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:27:20" (2/4) ... [2024-02-07 14:27:21,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7daa74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:27:21, skipping insertion in model container [2024-02-07 14:27:21,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:20" (3/4) ... [2024-02-07 14:27:21,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7daa74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:27:21, skipping insertion in model container [2024-02-07 14:27:21,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:21" (4/4) ... [2024-02-07 14:27:21,415 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2024-02-07 14:27:21,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:27:21,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-02-07 14:27:21,429 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:27:21,495 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:27:21,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 67 transitions, 141 flow [2024-02-07 14:27:21,569 INFO L124 PetriNetUnfolderBase]: 9/66 cut-off events. [2024-02-07 14:27:21,569 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:27:21,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 66 events. 9/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 183 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2024-02-07 14:27:21,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 67 transitions, 141 flow [2024-02-07 14:27:21,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 64 transitions, 131 flow [2024-02-07 14:27:21,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:21,595 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;@5b98af39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:21,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-02-07 14:27:21,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:21,599 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:27:21,599 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:21,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:21,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:27:21,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:21,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash 12566, now seen corresponding path program 1 times [2024-02-07 14:27:21,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:21,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585235992] [2024-02-07 14:27:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:21,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:21,851 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 14:27:21,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:21,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585235992] [2024-02-07 14:27:21,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585235992] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:21,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:21,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:27:21,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319895342] [2024-02-07 14:27:21,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:21,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:27:21,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:27:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:27:21,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2024-02-07 14:27:21,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 14:27:21,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:21,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2024-02-07 14:27:21,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:22,018 INFO L124 PetriNetUnfolderBase]: 112/432 cut-off events. [2024-02-07 14:27:22,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:22,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 432 events. 112/432 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2121 event pairs, 112 based on Foata normal form. 82/482 useless extension candidates. Maximal degree in co-relation 675. Up to 249 conditions per place. [2024-02-07 14:27:22,027 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 23 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-02-07 14:27:22,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 161 flow [2024-02-07 14:27:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:27:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:27:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-02-07 14:27:22,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6218905472636815 [2024-02-07 14:27:22,039 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 131 flow. Second operand 3 states and 125 transitions. [2024-02-07 14:27:22,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 161 flow [2024-02-07 14:27:22,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:27:22,048 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 114 flow [2024-02-07 14:27:22,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-02-07 14:27:22,054 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-02-07 14:27:22,054 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 114 flow [2024-02-07 14:27:22,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 14:27:22,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:22,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:22,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:27:22,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:22,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:22,058 INFO L85 PathProgramCache]: Analyzing trace with hash 374817088, now seen corresponding path program 1 times [2024-02-07 14:27:22,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:22,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333387113] [2024-02-07 14:27:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:22,387 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 14:27:22,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:22,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333387113] [2024-02-07 14:27:22,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333387113] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:22,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:22,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:27:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046684871] [2024-02-07 14:27:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:22,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:27:22,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:22,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:27:22,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:27:22,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-02-07 14:27:22,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 14:27:22,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:22,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-02-07 14:27:22,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:22,634 INFO L124 PetriNetUnfolderBase]: 160/489 cut-off events. [2024-02-07 14:27:22,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:22,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 489 events. 160/489 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2387 event pairs, 40 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 838. Up to 239 conditions per place. [2024-02-07 14:27:22,639 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 42 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-02-07 14:27:22,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 238 flow [2024-02-07 14:27:22,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-02-07 14:27:22,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014925373134328 [2024-02-07 14:27:22,647 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 114 flow. Second operand 5 states and 168 transitions. [2024-02-07 14:27:22,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 238 flow [2024-02-07 14:27:22,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:27:22,649 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 118 flow [2024-02-07 14:27:22,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-02-07 14:27:22,650 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2024-02-07 14:27:22,650 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 118 flow [2024-02-07 14:27:22,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 14:27:22,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:22,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:22,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:27:22,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:22,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2147108090, now seen corresponding path program 1 times [2024-02-07 14:27:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:22,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699376140] [2024-02-07 14:27:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:22,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:22,706 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 14:27:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699376140] [2024-02-07 14:27:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699376140] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:22,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:22,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554502434] [2024-02-07 14:27:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:22,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:22,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:22,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:22,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:22,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-02-07 14:27:22,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 14:27:22,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:22,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-02-07 14:27:22,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:22,805 INFO L124 PetriNetUnfolderBase]: 142/528 cut-off events. [2024-02-07 14:27:22,805 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-02-07 14:27:22,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 528 events. 142/528 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2696 event pairs, 56 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 864. Up to 197 conditions per place. [2024-02-07 14:27:22,820 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 45 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-02-07 14:27:22,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 274 flow [2024-02-07 14:27:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:22,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-02-07 14:27:22,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591044776119403 [2024-02-07 14:27:22,822 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 118 flow. Second operand 5 states and 198 transitions. [2024-02-07 14:27:22,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 274 flow [2024-02-07 14:27:22,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:27:22,824 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 145 flow [2024-02-07 14:27:22,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-02-07 14:27:22,825 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2024-02-07 14:27:22,825 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 145 flow [2024-02-07 14:27:22,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 14:27:22,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:22,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:22,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:27:22,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:22,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1424086874, now seen corresponding path program 1 times [2024-02-07 14:27:22,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:22,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227758880] [2024-02-07 14:27:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:22,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:22,875 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 14:27:22,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227758880] [2024-02-07 14:27:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227758880] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:22,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:22,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:22,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073971515] [2024-02-07 14:27:22,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:22,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:27:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:27:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:27:22,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-02-07 14:27:22,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:22,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:22,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-02-07 14:27:22,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:22,953 INFO L124 PetriNetUnfolderBase]: 147/453 cut-off events. [2024-02-07 14:27:22,953 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-02-07 14:27:22,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 453 events. 147/453 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2090 event pairs, 85 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 847. Up to 311 conditions per place. [2024-02-07 14:27:22,956 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 38 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-02-07 14:27:22,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 231 flow [2024-02-07 14:27:22,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:27:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:27:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-02-07 14:27:22,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373134328358209 [2024-02-07 14:27:22,957 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 145 flow. Second operand 3 states and 108 transitions. [2024-02-07 14:27:22,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 231 flow [2024-02-07 14:27:22,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:22,960 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 135 flow [2024-02-07 14:27:22,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-02-07 14:27:22,961 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-02-07 14:27:22,961 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 135 flow [2024-02-07 14:27:22,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:22,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:22,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:22,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:27:22,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:22,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:22,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1786558899, now seen corresponding path program 1 times [2024-02-07 14:27:22,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:22,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615159301] [2024-02-07 14:27:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:22,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:23,059 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 14:27:23,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:23,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615159301] [2024-02-07 14:27:23,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615159301] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:23,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:23,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:27:23,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615330640] [2024-02-07 14:27:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:23,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:23,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-02-07 14:27:23,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 14:27:23,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:23,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-02-07 14:27:23,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:23,190 INFO L124 PetriNetUnfolderBase]: 151/493 cut-off events. [2024-02-07 14:27:23,190 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-02-07 14:27:23,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 493 events. 151/493 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2321 event pairs, 51 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 895. Up to 188 conditions per place. [2024-02-07 14:27:23,192 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 40 selfloop transitions, 8 changer transitions 5/74 dead transitions. [2024-02-07 14:27:23,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 292 flow [2024-02-07 14:27:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-02-07 14:27:23,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591044776119403 [2024-02-07 14:27:23,193 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 135 flow. Second operand 5 states and 198 transitions. [2024-02-07 14:27:23,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 292 flow [2024-02-07 14:27:23,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 74 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:27:23,195 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 176 flow [2024-02-07 14:27:23,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-02-07 14:27:23,196 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2024-02-07 14:27:23,196 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 176 flow [2024-02-07 14:27:23,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 14:27:23,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:23,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:23,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:27:23,197 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:23,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash 715325625, now seen corresponding path program 1 times [2024-02-07 14:27:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753220811] [2024-02-07 14:27:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:23,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:23,290 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 14:27:23,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:23,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753220811] [2024-02-07 14:27:23,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753220811] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:23,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:23,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:27:23,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343347561] [2024-02-07 14:27:23,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:23,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:27:23,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:27:23,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:27:23,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 67 [2024-02-07 14:27:23,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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 14:27:23,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:23,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 67 [2024-02-07 14:27:23,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:23,459 INFO L124 PetriNetUnfolderBase]: 137/456 cut-off events. [2024-02-07 14:27:23,459 INFO L125 PetriNetUnfolderBase]: For 152/161 co-relation queries the response was YES. [2024-02-07 14:27:23,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 456 events. 137/456 cut-off events. For 152/161 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2162 event pairs, 32 based on Foata normal form. 9/459 useless extension candidates. Maximal degree in co-relation 924. Up to 189 conditions per place. [2024-02-07 14:27:23,461 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 46 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2024-02-07 14:27:23,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 344 flow [2024-02-07 14:27:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:27:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:27:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-02-07 14:27:23,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701492537313433 [2024-02-07 14:27:23,462 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 176 flow. Second operand 6 states and 189 transitions. [2024-02-07 14:27:23,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 344 flow [2024-02-07 14:27:23,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:23,465 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 188 flow [2024-02-07 14:27:23,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2024-02-07 14:27:23,466 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2024-02-07 14:27:23,466 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 188 flow [2024-02-07 14:27:23,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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 14:27:23,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:23,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:23,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:27:23,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:23,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash 610266055, now seen corresponding path program 1 times [2024-02-07 14:27:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387375254] [2024-02-07 14:27:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:23,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:23,513 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 14:27:23,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:23,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387375254] [2024-02-07 14:27:23,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387375254] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:23,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:23,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:27:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400626254] [2024-02-07 14:27:23,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:23,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:27:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:27:23,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:27:23,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 67 [2024-02-07 14:27:23,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 14:27:23,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:23,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 67 [2024-02-07 14:27:23,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:23,588 INFO L124 PetriNetUnfolderBase]: 96/370 cut-off events. [2024-02-07 14:27:23,589 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-02-07 14:27:23,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 370 events. 96/370 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1713 event pairs, 29 based on Foata normal form. 9/374 useless extension candidates. Maximal degree in co-relation 753. Up to 137 conditions per place. [2024-02-07 14:27:23,590 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 38 selfloop transitions, 7 changer transitions 2/70 dead transitions. [2024-02-07 14:27:23,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 312 flow [2024-02-07 14:27:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:27:23,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:27:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-02-07 14:27:23,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6965174129353234 [2024-02-07 14:27:23,592 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 188 flow. Second operand 3 states and 140 transitions. [2024-02-07 14:27:23,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 312 flow [2024-02-07 14:27:23,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 286 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-07 14:27:23,612 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 178 flow [2024-02-07 14:27:23,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-02-07 14:27:23,613 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2024-02-07 14:27:23,613 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 178 flow [2024-02-07 14:27:23,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 14:27:23,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:23,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:23,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:27:23,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:23,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash -274123242, now seen corresponding path program 1 times [2024-02-07 14:27:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:23,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251974065] [2024-02-07 14:27:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:23,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:23,914 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 14:27:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:23,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251974065] [2024-02-07 14:27:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251974065] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:23,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-07 14:27:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179471808] [2024-02-07 14:27:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:23,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-07 14:27:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-07 14:27:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-07 14:27:24,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 67 [2024-02-07 14:27:24,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 178 flow. Second operand has 9 states, 9 states have (on average 32.55555555555556) internal successors, (293), 9 states have internal predecessors, (293), 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 14:27:24,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:24,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 67 [2024-02-07 14:27:24,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:24,216 INFO L124 PetriNetUnfolderBase]: 47/217 cut-off events. [2024-02-07 14:27:24,217 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-02-07 14:27:24,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 217 events. 47/217 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 647 event pairs, 0 based on Foata normal form. 6/223 useless extension candidates. Maximal degree in co-relation 441. Up to 57 conditions per place. [2024-02-07 14:27:24,218 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 36 selfloop transitions, 16 changer transitions 4/79 dead transitions. [2024-02-07 14:27:24,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 79 transitions, 370 flow [2024-02-07 14:27:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-07 14:27:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-07 14:27:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 399 transitions. [2024-02-07 14:27:24,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413839891451832 [2024-02-07 14:27:24,220 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 178 flow. Second operand 11 states and 399 transitions. [2024-02-07 14:27:24,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 79 transitions, 370 flow [2024-02-07 14:27:24,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 338 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-02-07 14:27:24,222 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 190 flow [2024-02-07 14:27:24,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=190, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-02-07 14:27:24,222 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2024-02-07 14:27:24,223 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 190 flow [2024-02-07 14:27:24,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.55555555555556) internal successors, (293), 9 states have internal predecessors, (293), 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 14:27:24,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:24,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:24,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:27:24,223 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:24,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:24,224 INFO L85 PathProgramCache]: Analyzing trace with hash 200357191, now seen corresponding path program 1 times [2024-02-07 14:27:24,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:24,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430648677] [2024-02-07 14:27:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:24,337 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 14:27:24,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:24,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430648677] [2024-02-07 14:27:24,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430648677] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:24,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:24,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:27:24,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862245571] [2024-02-07 14:27:24,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:24,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:27:24,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:27:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:27:24,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 67 [2024-02-07 14:27:24,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 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 14:27:24,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:24,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 67 [2024-02-07 14:27:24,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:24,529 INFO L124 PetriNetUnfolderBase]: 45/203 cut-off events. [2024-02-07 14:27:24,530 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-02-07 14:27:24,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 203 events. 45/203 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 566 event pairs, 3 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 428. Up to 52 conditions per place. [2024-02-07 14:27:24,531 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 20 selfloop transitions, 6 changer transitions 25/68 dead transitions. [2024-02-07 14:27:24,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 317 flow [2024-02-07 14:27:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:27:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:27:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2024-02-07 14:27:24,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253731343283582 [2024-02-07 14:27:24,532 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 190 flow. Second operand 8 states and 228 transitions. [2024-02-07 14:27:24,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 317 flow [2024-02-07 14:27:24,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 293 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-07 14:27:24,534 INFO L231 Difference]: Finished difference. Result has 70 places, 39 transitions, 118 flow [2024-02-07 14:27:24,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=118, PETRI_PLACES=70, PETRI_TRANSITIONS=39} [2024-02-07 14:27:24,535 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2024-02-07 14:27:24,535 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 39 transitions, 118 flow [2024-02-07 14:27:24,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 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 14:27:24,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:24,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:24,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:27:24,536 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:24,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash -381672432, now seen corresponding path program 1 times [2024-02-07 14:27:24,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:24,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035638024] [2024-02-07 14:27:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:24,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:24,679 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 14:27:24,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:24,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035638024] [2024-02-07 14:27:24,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035638024] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:24,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:24,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:27:24,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253858495] [2024-02-07 14:27:24,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:24,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:27:24,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:27:24,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:27:24,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-02-07 14:27:24,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 39 transitions, 118 flow. Second operand has 8 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 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 14:27:24,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:24,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-02-07 14:27:24,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:24,909 INFO L124 PetriNetUnfolderBase]: 19/91 cut-off events. [2024-02-07 14:27:24,910 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-02-07 14:27:24,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 91 events. 19/91 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 3 based on Foata normal form. 2/93 useless extension candidates. Maximal degree in co-relation 188. Up to 39 conditions per place. [2024-02-07 14:27:24,910 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 19 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-02-07 14:27:24,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 42 transitions, 176 flow [2024-02-07 14:27:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:27:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:27:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-02-07 14:27:24,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701492537313433 [2024-02-07 14:27:24,912 INFO L175 Difference]: Start difference. First operand has 70 places, 39 transitions, 118 flow. Second operand 8 states and 252 transitions. [2024-02-07 14:27:24,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 42 transitions, 176 flow [2024-02-07 14:27:24,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 145 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-02-07 14:27:24,913 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 99 flow [2024-02-07 14:27:24,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=99, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2024-02-07 14:27:24,913 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2024-02-07 14:27:24,914 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 99 flow [2024-02-07 14:27:24,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 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 14:27:24,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:24,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:24,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:27:24,914 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:27:24,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:24,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1714973481, now seen corresponding path program 1 times [2024-02-07 14:27:24,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:24,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20389873] [2024-02-07 14:27:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:24,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:24,965 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 14:27:24,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:24,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20389873] [2024-02-07 14:27:24,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20389873] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:24,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:24,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:27:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73570947] [2024-02-07 14:27:24,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:24,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:24,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:24,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:24,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:24,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-02-07 14:27:24,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 14:27:24,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:24,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-02-07 14:27:24,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:25,012 INFO L124 PetriNetUnfolderBase]: 19/87 cut-off events. [2024-02-07 14:27:25,012 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 14:27:25,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 87 events. 19/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 16 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 172. Up to 53 conditions per place. [2024-02-07 14:27:25,013 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2024-02-07 14:27:25,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 38 transitions, 149 flow [2024-02-07 14:27:25,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-02-07 14:27:25,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149253731343284 [2024-02-07 14:27:25,014 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 99 flow. Second operand 4 states and 138 transitions. [2024-02-07 14:27:25,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 38 transitions, 149 flow [2024-02-07 14:27:25,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 38 transitions, 133 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-07 14:27:25,015 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-02-07 14:27:25,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-02-07 14:27:25,016 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -12 predicate places. [2024-02-07 14:27:25,016 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-02-07 14:27:25,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 14:27:25,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 22 remaining) [2024-02-07 14:27:25,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 22 remaining) [2024-02-07 14:27:25,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (19 of 22 remaining) [2024-02-07 14:27:25,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2024-02-07 14:27:25,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 22 remaining) [2024-02-07 14:27:25,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 22 remaining) [2024-02-07 14:27:25,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 22 remaining) [2024-02-07 14:27:25,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 22 remaining) [2024-02-07 14:27:25,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 22 remaining) [2024-02-07 14:27:25,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 22 remaining) [2024-02-07 14:27:25,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 22 remaining) [2024-02-07 14:27:25,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 22 remaining) [2024-02-07 14:27:25,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 22 remaining) [2024-02-07 14:27:25,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 22 remaining) [2024-02-07 14:27:25,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 22 remaining) [2024-02-07 14:27:25,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 22 remaining) [2024-02-07 14:27:25,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 22 remaining) [2024-02-07 14:27:25,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 22 remaining) [2024-02-07 14:27:25,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 22 remaining) [2024-02-07 14:27:25,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 22 remaining) [2024-02-07 14:27:25,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 22 remaining) [2024-02-07 14:27:25,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 22 remaining) [2024-02-07 14:27:25,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:27:25,022 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:25,026 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:27:25,026 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:27:25,029 INFO L503 ceAbstractionStarter]: Automizer considered 11 witness invariants [2024-02-07 14:27:25,030 INFO L504 ceAbstractionStarter]: WitnessConsidered=11 [2024-02-07 14:27:25,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:27:25 BasicIcfg [2024-02-07 14:27:25,030 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:27:25,031 INFO L158 Benchmark]: Toolchain (without parser) took 4888.11ms. Allocated memory was 157.3MB in the beginning and 245.4MB in the end (delta: 88.1MB). Free memory was 121.2MB in the beginning and 120.4MB in the end (delta: 827.6kB). Peak memory consumption was 90.0MB. Max. memory is 16.1GB. [2024-02-07 14:27:25,031 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:27:25,031 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:27:25,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.44ms. Allocated memory is still 157.3MB. Free memory was 120.3MB in the beginning and 94.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-02-07 14:27:25,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.57ms. Allocated memory is still 157.3MB. Free memory was 94.3MB in the beginning and 92.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:27:25,032 INFO L158 Benchmark]: Boogie Preprocessor took 69.74ms. Allocated memory is still 157.3MB. Free memory was 92.2MB in the beginning and 88.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:27:25,032 INFO L158 Benchmark]: RCFGBuilder took 637.04ms. Allocated memory is still 157.3MB. Free memory was 88.9MB in the beginning and 46.0MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-02-07 14:27:25,032 INFO L158 Benchmark]: TraceAbstraction took 3623.41ms. Allocated memory was 157.3MB in the beginning and 245.4MB in the end (delta: 88.1MB). Free memory was 45.7MB in the beginning and 120.4MB in the end (delta: -74.7MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2024-02-07 14:27:25,033 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.44ms. Allocated memory is still 157.3MB. Free memory was 120.3MB in the beginning and 94.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.57ms. Allocated memory is still 157.3MB. Free memory was 94.3MB in the beginning and 92.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.74ms. Allocated memory is still 157.3MB. Free memory was 92.2MB in the beginning and 88.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 637.04ms. Allocated memory is still 157.3MB. Free memory was 88.9MB in the beginning and 46.0MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3623.41ms. Allocated memory was 157.3MB in the beginning and 245.4MB in the end (delta: 88.1MB). Free memory was 45.7MB in the beginning and 120.4MB in the end (delta: -74.7MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 709]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 703]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 704]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 96 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 801 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 648 mSDsluCounter, 316 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 219 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1895 IncrementalHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 97 mSDtfsCounter, 1895 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=8, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 1149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:27:25,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE