./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_45-escape_racing.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_45-escape_racing.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:54:16,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:54:17,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:54:17,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:54:17,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:54:17,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:54:17,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:54:17,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:54:17,076 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:54:17,079 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:54:17,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:54:17,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:54:17,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:54:17,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:54:17,082 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:54:17,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:54:17,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:54:17,083 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:54:17,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:54:17,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:54:17,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:54:17,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:54:17,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:54:17,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:54:17,084 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:54:17,085 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:54:17,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:54:17,085 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:54:17,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:54:17,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:54:17,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:54:17,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:54:17,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:17,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:54:17,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:54:17,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:54:17,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:54:17,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:54:17,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:54:17,088 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:54:17,088 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:54:17,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:54:17,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:54:17,089 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:54:17,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:54:17,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:54:17,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:54:17,297 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:54:17,297 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:54:17,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2024-02-07 14:54:18,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:54:18,642 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:54:18,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2024-02-07 14:54:18,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184a2f60b/8182b76e36e648dd9fe4bf7466ce66e3/FLAGd773ffcc3 [2024-02-07 14:54:18,674 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184a2f60b/8182b76e36e648dd9fe4bf7466ce66e3 [2024-02-07 14:54:18,676 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:54:18,677 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:54:18,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_45-escape_racing.yml/witness.yml [2024-02-07 14:54:18,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:54:18,755 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:54:18,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:18,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:54:18,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:54:18,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:18" (1/2) ... [2024-02-07 14:54:18,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6d2cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:18, skipping insertion in model container [2024-02-07 14:54:18,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:18" (1/2) ... [2024-02-07 14:54:18,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79a97ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:18, skipping insertion in model container [2024-02-07 14:54:18,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:18" (2/2) ... [2024-02-07 14:54:18,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6d2cfa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:18, skipping insertion in model container [2024-02-07 14:54:18,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:18" (2/2) ... [2024-02-07 14:54:18,764 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:54:18,802 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:54:18,803 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] (0 <= *p) && (arg == p) [2024-02-07 14:54:18,803 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] arg == p [2024-02-07 14:54:18,803 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] (1 <= *p) && (arg == p) [2024-02-07 14:54:18,803 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] arg == p [2024-02-07 14:54:18,803 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] (1 <= *p) && (arg == p) [2024-02-07 14:54:18,804 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] arg == p [2024-02-07 14:54:18,804 INFO L76 edCorrectnessWitness]: Location invariant before [L701-L701] (0 <= *p) && (arg == p) [2024-02-07 14:54:18,804 INFO L76 edCorrectnessWitness]: Location invariant before [L700-L700] 0 <= *((int *)arg) [2024-02-07 14:54:18,804 INFO L76 edCorrectnessWitness]: Location invariant after [L711-L711] 0 <= i [2024-02-07 14:54:18,804 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] arg == p [2024-02-07 14:54:18,804 INFO L76 edCorrectnessWitness]: Location invariant before [L704-L704] arg == p [2024-02-07 14:54:18,804 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] arg == p [2024-02-07 14:54:18,805 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] (0 <= *p) && (arg == p) [2024-02-07 14:54:18,805 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] arg == p [2024-02-07 14:54:18,805 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] 0 <= i [2024-02-07 14:54:18,805 INFO L76 edCorrectnessWitness]: Location invariant after [L700-L700] 0 <= *((int *)arg) [2024-02-07 14:54:18,805 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] arg == p [2024-02-07 14:54:18,805 INFO L76 edCorrectnessWitness]: Location invariant before [L709-L709] (0 == i) && (i == 0) [2024-02-07 14:54:18,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:54:19,122 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_45-escape_racing.i[30176,30189] [2024-02-07 14:54:19,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:19,159 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:54:19,223 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_45-escape_racing.i[30176,30189] [2024-02-07 14:54:19,225 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:54:19,226 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 14:54:19,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:19,307 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:54:19,308 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19 WrapperNode [2024-02-07 14:54:19,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:19,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:19,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:54:19,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:54:19,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,368 INFO L138 Inliner]: procedures = 171, calls = 56, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2024-02-07 14:54:19,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:19,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:54:19,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:54:19,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:54:19,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,407 INFO L175 MemorySlicer]: Split 31 memory accesses to 6 slices as follows [2, 5, 5, 5, 12, 2]. 39 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 5, 5, 1, 0]. The 3 writes are split as follows [0, 0, 0, 0, 2, 1]. [2024-02-07 14:54:19,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:54:19,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:54:19,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:54:19,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:54:19,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (1/1) ... [2024-02-07 14:54:19,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:19,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:19,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:54:19,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:54:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:54:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:54:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:54:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:54:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:54:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:54:19,588 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:54:19,706 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:54:19,708 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:54:19,929 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:54:19,932 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:54:20,082 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:54:20,082 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-07 14:54:20,082 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:20 BoogieIcfgContainer [2024-02-07 14:54:20,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:54:20,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:54:20,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:54:20,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:54:20,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:54:18" (1/4) ... [2024-02-07 14:54:20,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0a1d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:54:20, skipping insertion in model container [2024-02-07 14:54:20,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:18" (2/4) ... [2024-02-07 14:54:20,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0a1d9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:54:20, skipping insertion in model container [2024-02-07 14:54:20,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:19" (3/4) ... [2024-02-07 14:54:20,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0a1d9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:54:20, skipping insertion in model container [2024-02-07 14:54:20,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:20" (4/4) ... [2024-02-07 14:54:20,091 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_45-escape_racing.i [2024-02-07 14:54:20,107 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:54:20,108 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-02-07 14:54:20,108 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:54:20,148 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:54:20,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 67 transitions, 141 flow [2024-02-07 14:54:20,218 INFO L124 PetriNetUnfolderBase]: 9/66 cut-off events. [2024-02-07 14:54:20,218 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:54:20,222 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 184 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 14:54:20,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 67 transitions, 141 flow [2024-02-07 14:54:20,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 64 transitions, 131 flow [2024-02-07 14:54:20,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:20,237 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;@5c99762c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:20,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-02-07 14:54:20,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:20,240 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:54:20,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:20,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:20,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:54:20,241 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 14:54:20,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:20,245 INFO L85 PathProgramCache]: Analyzing trace with hash 11768, now seen corresponding path program 1 times [2024-02-07 14:54:20,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:20,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61066752] [2024-02-07 14:54:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:20,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:20,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:20,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61066752] [2024-02-07 14:54:20,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61066752] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:20,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:20,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:54:20,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750820636] [2024-02-07 14:54:20,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:20,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:54:20,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:20,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:54:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:54:20,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2024-02-07 14:54:20,509 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 14:54:20,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:20,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2024-02-07 14:54:20,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:20,684 INFO L124 PetriNetUnfolderBase]: 112/432 cut-off events. [2024-02-07 14:54:20,689 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:20,692 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 2113 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 14:54:20,695 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 23 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-02-07 14:54:20,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 161 flow [2024-02-07 14:54:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:54:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:54:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-02-07 14:54:20,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6218905472636815 [2024-02-07 14:54:20,709 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 131 flow. Second operand 3 states and 125 transitions. [2024-02-07 14:54:20,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 161 flow [2024-02-07 14:54:20,712 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 14:54:20,717 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 114 flow [2024-02-07 14:54:20,719 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 14:54:20,721 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-02-07 14:54:20,722 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 114 flow [2024-02-07 14:54:20,722 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 14:54:20,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:20,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:20,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:54:20,723 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 14:54:20,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash 351020038, now seen corresponding path program 1 times [2024-02-07 14:54:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:20,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107078919] [2024-02-07 14:54:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:20,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:20,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107078919] [2024-02-07 14:54:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107078919] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:20,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:20,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:54:20,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105701359] [2024-02-07 14:54:20,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:20,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:54:20,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:20,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:54:20,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:54:21,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-02-07 14:54:21,014 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 14:54:21,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:21,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-02-07 14:54:21,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:21,174 INFO L124 PetriNetUnfolderBase]: 160/489 cut-off events. [2024-02-07 14:54:21,174 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:21,175 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 2379 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 14:54:21,176 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 42 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-02-07 14:54:21,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 238 flow [2024-02-07 14:54:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:54:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:54:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-02-07 14:54:21,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014925373134328 [2024-02-07 14:54:21,179 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 114 flow. Second operand 5 states and 168 transitions. [2024-02-07 14:54:21,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 238 flow [2024-02-07 14:54:21,179 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 14:54:21,181 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 118 flow [2024-02-07 14:54:21,181 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 14:54:21,181 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2024-02-07 14:54:21,182 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 118 flow [2024-02-07 14:54:21,182 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 14:54:21,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:21,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:21,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:54:21,183 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 14:54:21,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:21,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1875636146, now seen corresponding path program 1 times [2024-02-07 14:54:21,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:21,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902836007] [2024-02-07 14:54:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:21,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:21,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902836007] [2024-02-07 14:54:21,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902836007] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:21,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:21,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:21,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589788868] [2024-02-07 14:54:21,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:21,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:21,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:21,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:21,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:21,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-02-07 14:54:21,253 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 14:54:21,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:21,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-02-07 14:54:21,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:21,351 INFO L124 PetriNetUnfolderBase]: 142/528 cut-off events. [2024-02-07 14:54:21,351 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-02-07 14:54:21,352 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 2698 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 14:54:21,354 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 45 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-02-07 14:54:21,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 274 flow [2024-02-07 14:54:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:54:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:54:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-02-07 14:54:21,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591044776119403 [2024-02-07 14:54:21,356 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 118 flow. Second operand 5 states and 198 transitions. [2024-02-07 14:54:21,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 274 flow [2024-02-07 14:54:21,356 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 14:54:21,357 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 145 flow [2024-02-07 14:54:21,358 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 14:54:21,358 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2024-02-07 14:54:21,358 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 145 flow [2024-02-07 14:54:21,359 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 14:54:21,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:21,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:21,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:54:21,359 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 14:54:21,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:21,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1152585108, now seen corresponding path program 1 times [2024-02-07 14:54:21,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:21,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034961444] [2024-02-07 14:54:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:21,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:21,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:21,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034961444] [2024-02-07 14:54:21,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034961444] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:21,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:21,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:21,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798516629] [2024-02-07 14:54:21,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:21,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:54:21,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:54:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:54:21,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-02-07 14:54:21,401 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 14:54:21,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:21,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-02-07 14:54:21,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:21,477 INFO L124 PetriNetUnfolderBase]: 147/453 cut-off events. [2024-02-07 14:54:21,477 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-02-07 14:54:21,478 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 2073 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 14:54:21,479 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 38 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-02-07 14:54:21,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 231 flow [2024-02-07 14:54:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:54:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:54:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-02-07 14:54:21,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373134328358209 [2024-02-07 14:54:21,481 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 145 flow. Second operand 3 states and 108 transitions. [2024-02-07 14:54:21,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 231 flow [2024-02-07 14:54:21,482 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 14:54:21,482 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 135 flow [2024-02-07 14:54:21,483 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 14:54:21,483 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-02-07 14:54:21,483 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 135 flow [2024-02-07 14:54:21,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:21,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:21,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:21,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:54:21,484 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 14:54:21,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1399940758, now seen corresponding path program 1 times [2024-02-07 14:54:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:21,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464667936] [2024-02-07 14:54:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:21,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:21,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:21,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464667936] [2024-02-07 14:54:21,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464667936] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:21,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:21,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:54:21,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365460240] [2024-02-07 14:54:21,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:21,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:21,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:21,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:21,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:21,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-02-07 14:54:21,537 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 14:54:21,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:21,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-02-07 14:54:21,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:21,622 INFO L124 PetriNetUnfolderBase]: 151/493 cut-off events. [2024-02-07 14:54:21,623 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-02-07 14:54:21,624 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 2337 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 14:54:21,625 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 40 selfloop transitions, 8 changer transitions 5/74 dead transitions. [2024-02-07 14:54:21,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 292 flow [2024-02-07 14:54:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:54:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:54:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-02-07 14:54:21,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591044776119403 [2024-02-07 14:54:21,626 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 135 flow. Second operand 5 states and 198 transitions. [2024-02-07 14:54:21,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 292 flow [2024-02-07 14:54:21,627 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 14:54:21,628 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 176 flow [2024-02-07 14:54:21,628 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 14:54:21,629 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2024-02-07 14:54:21,629 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 176 flow [2024-02-07 14:54:21,629 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 14:54:21,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:21,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:21,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:54:21,630 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 14:54:21,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:21,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1600994331, now seen corresponding path program 1 times [2024-02-07 14:54:21,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:21,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595093961] [2024-02-07 14:54:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:21,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:21,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595093961] [2024-02-07 14:54:21,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595093961] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:21,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:21,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:54:21,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317713293] [2024-02-07 14:54:21,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:21,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:54:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:21,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:54:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:54:21,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 67 [2024-02-07 14:54:21,756 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 14:54:21,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:21,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 67 [2024-02-07 14:54:21,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:21,880 INFO L124 PetriNetUnfolderBase]: 137/456 cut-off events. [2024-02-07 14:54:21,880 INFO L125 PetriNetUnfolderBase]: For 152/161 co-relation queries the response was YES. [2024-02-07 14:54:21,881 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 2152 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 14:54:21,882 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 46 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2024-02-07 14:54:21,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 344 flow [2024-02-07 14:54:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:54:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:54:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-02-07 14:54:21,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701492537313433 [2024-02-07 14:54:21,884 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 176 flow. Second operand 6 states and 189 transitions. [2024-02-07 14:54:21,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 344 flow [2024-02-07 14:54:21,886 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 14:54:21,886 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 188 flow [2024-02-07 14:54:21,887 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 14:54:21,887 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2024-02-07 14:54:21,887 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 188 flow [2024-02-07 14:54:21,888 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 14:54:21,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:21,888 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 14:54:21,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:54:21,888 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 14:54:21,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:21,889 INFO L85 PathProgramCache]: Analyzing trace with hash -727442021, now seen corresponding path program 1 times [2024-02-07 14:54:21,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:21,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950576484] [2024-02-07 14:54:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:21,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:21,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:21,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950576484] [2024-02-07 14:54:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950576484] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:21,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:54:21,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975556649] [2024-02-07 14:54:21,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:21,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:54:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:21,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:54:21,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:54:21,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 67 [2024-02-07 14:54:21,952 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 14:54:21,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:21,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 67 [2024-02-07 14:54:21,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:22,011 INFO L124 PetriNetUnfolderBase]: 91/335 cut-off events. [2024-02-07 14:54:22,012 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-02-07 14:54:22,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 335 events. 91/335 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1373 event pairs, 36 based on Foata normal form. 12/339 useless extension candidates. Maximal degree in co-relation 700. Up to 133 conditions per place. [2024-02-07 14:54:22,013 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 33 selfloop transitions, 8 changer transitions 5/69 dead transitions. [2024-02-07 14:54:22,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 308 flow [2024-02-07 14:54:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:54:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:54:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-02-07 14:54:22,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6965174129353234 [2024-02-07 14:54:22,014 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 188 flow. Second operand 3 states and 140 transitions. [2024-02-07 14:54:22,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 308 flow [2024-02-07 14:54:22,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 282 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-07 14:54:22,017 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 177 flow [2024-02-07 14:54:22,017 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-02-07 14:54:22,017 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2024-02-07 14:54:22,018 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 177 flow [2024-02-07 14:54:22,018 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 14:54:22,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:22,018 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 14:54:22,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:54:22,018 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 14:54:22,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash 960723994, now seen corresponding path program 1 times [2024-02-07 14:54:22,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:22,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244801827] [2024-02-07 14:54:22,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:22,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:22,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:22,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244801827] [2024-02-07 14:54:22,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244801827] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:22,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:22,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:54:22,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590276952] [2024-02-07 14:54:22,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:22,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:54:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:22,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:54:22,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:54:22,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-02-07 14:54:22,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 177 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:22,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:22,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-02-07 14:54:22,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:22,355 INFO L124 PetriNetUnfolderBase]: 97/358 cut-off events. [2024-02-07 14:54:22,355 INFO L125 PetriNetUnfolderBase]: For 109/116 co-relation queries the response was YES. [2024-02-07 14:54:22,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 358 events. 97/358 cut-off events. For 109/116 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1557 event pairs, 35 based on Foata normal form. 2/356 useless extension candidates. Maximal degree in co-relation 814. Up to 98 conditions per place. [2024-02-07 14:54:22,357 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 47 selfloop transitions, 7 changer transitions 5/79 dead transitions. [2024-02-07 14:54:22,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 396 flow [2024-02-07 14:54:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:54:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:54:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2024-02-07 14:54:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501066098081023 [2024-02-07 14:54:22,358 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 177 flow. Second operand 7 states and 258 transitions. [2024-02-07 14:54:22,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 396 flow [2024-02-07 14:54:22,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:54:22,360 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 203 flow [2024-02-07 14:54:22,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-02-07 14:54:22,361 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2024-02-07 14:54:22,361 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 203 flow [2024-02-07 14:54:22,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:22,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:22,362 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 14:54:22,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:54:22,362 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 14:54:22,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:22,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2122358103, now seen corresponding path program 1 times [2024-02-07 14:54:22,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:22,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436409366] [2024-02-07 14:54:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:22,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:22,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:22,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436409366] [2024-02-07 14:54:22,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436409366] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:22,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:22,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:54:22,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43682079] [2024-02-07 14:54:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:22,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:54:22,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:54:22,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:54:22,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 67 [2024-02-07 14:54:22,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 203 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 14:54:22,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:22,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 67 [2024-02-07 14:54:22,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:22,783 INFO L124 PetriNetUnfolderBase]: 92/340 cut-off events. [2024-02-07 14:54:22,783 INFO L125 PetriNetUnfolderBase]: For 183/189 co-relation queries the response was YES. [2024-02-07 14:54:22,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 340 events. 92/340 cut-off events. For 183/189 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1484 event pairs, 7 based on Foata normal form. 8/346 useless extension candidates. Maximal degree in co-relation 781. Up to 82 conditions per place. [2024-02-07 14:54:22,785 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 27 selfloop transitions, 6 changer transitions 30/81 dead transitions. [2024-02-07 14:54:22,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 408 flow [2024-02-07 14:54:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:54:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:54:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-07 14:54:22,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605543710021322 [2024-02-07 14:54:22,786 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 203 flow. Second operand 7 states and 216 transitions. [2024-02-07 14:54:22,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 408 flow [2024-02-07 14:54:22,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 396 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-07 14:54:22,789 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 152 flow [2024-02-07 14:54:22,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2024-02-07 14:54:22,790 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2024-02-07 14:54:22,790 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 152 flow [2024-02-07 14:54:22,791 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 14:54:22,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:22,791 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] [2024-02-07 14:54:22,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:54:22,791 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:54:22,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 344194982, now seen corresponding path program 1 times [2024-02-07 14:54:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:22,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324183445] [2024-02-07 14:54:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:22,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:22,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:54:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:22,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:54:22,834 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:54:22,835 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (21 of 22 remaining) [2024-02-07 14:54:22,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 22 remaining) [2024-02-07 14:54:22,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 22 remaining) [2024-02-07 14:54:22,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2024-02-07 14:54:22,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 22 remaining) [2024-02-07 14:54:22,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 22 remaining) [2024-02-07 14:54:22,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 22 remaining) [2024-02-07 14:54:22,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 22 remaining) [2024-02-07 14:54:22,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 22 remaining) [2024-02-07 14:54:22,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 22 remaining) [2024-02-07 14:54:22,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 22 remaining) [2024-02-07 14:54:22,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 22 remaining) [2024-02-07 14:54:22,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 22 remaining) [2024-02-07 14:54:22,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 22 remaining) [2024-02-07 14:54:22,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 22 remaining) [2024-02-07 14:54:22,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 22 remaining) [2024-02-07 14:54:22,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 22 remaining) [2024-02-07 14:54:22,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 22 remaining) [2024-02-07 14:54:22,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 22 remaining) [2024-02-07 14:54:22,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 22 remaining) [2024-02-07 14:54:22,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 22 remaining) [2024-02-07 14:54:22,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 22 remaining) [2024-02-07 14:54:22,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:54:22,840 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:22,845 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:54:22,845 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:54:22,859 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-02-07 14:54:22,859 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-02-07 14:54:22,862 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-02-07 14:54:22,863 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-02-07 14:54:22,863 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-02-07 14:54:22,868 INFO L503 ceAbstractionStarter]: Automizer considered 11 witness invariants [2024-02-07 14:54:22,869 INFO L504 ceAbstractionStarter]: WitnessConsidered=11 [2024-02-07 14:54:22,869 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:54:22 BasicIcfg [2024-02-07 14:54:22,869 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:54:22,870 INFO L158 Benchmark]: Toolchain (without parser) took 4115.11ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 108.2MB in the beginning and 157.0MB in the end (delta: -48.8MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2024-02-07 14:54:22,870 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:54:22,870 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 111.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:54:22,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.36ms. Allocated memory is still 167.8MB. Free memory was 108.2MB in the beginning and 81.8MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-02-07 14:54:22,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.47ms. Allocated memory is still 167.8MB. Free memory was 81.8MB in the beginning and 79.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:54:22,871 INFO L158 Benchmark]: Boogie Preprocessor took 48.91ms. Allocated memory is still 167.8MB. Free memory was 79.7MB in the beginning and 77.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:54:22,871 INFO L158 Benchmark]: RCFGBuilder took 662.67ms. Allocated memory is still 167.8MB. Free memory was 77.2MB in the beginning and 97.5MB in the end (delta: -20.4MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-02-07 14:54:22,871 INFO L158 Benchmark]: TraceAbstraction took 2784.49ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 96.6MB in the beginning and 157.0MB in the end (delta: -60.4MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2024-02-07 14:54:22,872 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 111.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.36ms. Allocated memory is still 167.8MB. Free memory was 108.2MB in the beginning and 81.8MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.47ms. Allocated memory is still 167.8MB. Free memory was 81.8MB in the beginning and 79.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.91ms. Allocated memory is still 167.8MB. Free memory was 79.7MB in the beginning and 77.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 662.67ms. Allocated memory is still 167.8MB. Free memory was 77.2MB in the beginning and 97.5MB in the end (delta: -20.4MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2784.49ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 96.6MB in the beginning and 157.0MB in the end (delta: -60.4MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 691]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t id; [L708] 0 int i = 0; [L708] 0 int i = 0; [L709] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IntegerLiteral[0],IdentifierExpression[i]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[0]]]]] [L709] 0 IdentifierExpression[i] [L709] 0 IdentifierExpression[i] [L709] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={7:0}, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}] [L709] 0 IdentifierExpression[i] [L709] 0 IdentifierExpression[i] [L700] 1 int *p = (int *) arg; [L701] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],UnaryExpression[POINTER,IdentifierExpression[p]]],BinaryExpression[COMPEQ,IdentifierExpression[arg],IdentifierExpression[p]]]]] [L701] 1 IdentifierExpression[p] VAL [__global_lock={3:0}, arg={7:0}, arg={7:0}, mutex1={4:0}, mutex2={5:0}, p={7:0}] [L701] 1 IdentifierExpression[p] [L702] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[arg],IdentifierExpression[p]]]] VAL [__global_lock={3:0}, arg={7:0}, arg={7:0}, mutex1={4:0}, mutex2={5:0}, p={7:0}] [L702] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],UnaryExpression[POINTER,IdentifierExpression[p]]],BinaryExpression[COMPEQ,IdentifierExpression[arg],IdentifierExpression[p]]]]] [L702] 1 IdentifierExpression[p] [L702] 1 IdentifierExpression[p] [L702] EXPR 1 \read(*p) [L702] 1 (*p)++ [L702] 1 (*p)++ VAL [__global_lock={3:0}, arg={7:0}, arg={7:0}, mutex1={4:0}, mutex2={5:0}, p={7:0}] [L702] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[arg],IdentifierExpression[p]]]] [L711] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[i]]]] [L711] 0 IdentifierExpression[i] [L711] 0 IdentifierExpression[i] [L711] EXPR 0 \read(i) [L711] CALL 0 __VERIFIER_assert((i) == 0) [L691] COND TRUE 0 !(cond) VAL [\old(cond)=0, __global_lock={3:0}, arg={7:0}, arg={7:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={7:0}] [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={7:0}, arg={7:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={7:0}] - UnprovableResult [Line: 709]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - 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: 2.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 616 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 498 mSDsluCounter, 218 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 177 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1403 IncrementalHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 41 mSDtfsCounter, 1403 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=8, InterpolantAutomatonStates: 44, 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, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 813 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 RESULT: Ultimate proved your program to be incorrect! [2024-02-07 14:54:22,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE