./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_33-traces-v-matters_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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/13-privatized_33-traces-v-matters_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_33-traces-v-matters_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:06:27,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:06:27,943 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:06:27,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:06:27,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:06:27,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:06:27,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:06:27,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:06:27,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:06:27,978 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:06:27,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:06:27,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:06:27,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:06:27,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:06:27,980 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:06:27,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:06:27,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:06:27,981 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:06:27,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:06:27,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:06:27,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:06:27,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:06:27,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:06:27,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:06:27,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:06:27,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:06:27,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:06:27,983 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:06:27,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:06:27,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:06:27,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:06:27,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:06:27,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:06:27,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:06:27,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:06:27,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:06:27,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:06:27,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:06:27,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:06:27,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:06:27,987 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:06:27,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:06:27,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:06:27,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:06:28,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:06:28,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:06:28,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:06:28,236 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:06:28,238 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:06:28,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_33-traces-v-matters_true.yml/witness.yml [2024-01-31 16:06:28,308 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:06:28,309 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:06:28,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i [2024-01-31 16:06:29,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:06:29,720 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:06:29,720 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i [2024-01-31 16:06:29,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3b60ca02/563d0054c3a34aff872a048ca99e492c/FLAGa77a819e1 [2024-01-31 16:06:29,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3b60ca02/563d0054c3a34aff872a048ca99e492c [2024-01-31 16:06:29,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:06:29,747 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:06:29,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:06:29,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:06:29,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:06:29,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:06:28" (1/2) ... [2024-01-31 16:06:29,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ade5f1f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:06:29, skipping insertion in model container [2024-01-31 16:06:29,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:06:28" (1/2) ... [2024-01-31 16:06:29,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@716db3d2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:06:29, skipping insertion in model container [2024-01-31 16:06:29,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:06:29" (2/2) ... [2024-01-31 16:06:29,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ade5f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:29, skipping insertion in model container [2024-01-31 16:06:29,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:06:29" (2/2) ... [2024-01-31 16:06:29,759 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:06:29,827 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:06:29,828 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] (((((0 <= g) && (g <= 42)) && (g <= 127)) && (g % 2 == 0)) && ((unsigned long )arg == 0UL)) && ((g == 0 || g == 2) || g == 42) [2024-01-31 16:06:29,828 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] (g == 42) && ((unsigned long )arg == 0UL) [2024-01-31 16:06:29,829 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] (((((0 <= g) && (g <= 42)) && (g <= 127)) && (g % 2 == 0)) && ((unsigned long )arg == 0UL)) && ((g == 0 || g == 2) || g == 42) [2024-01-31 16:06:29,829 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (g == 42) && ((unsigned long )arg == 0UL) [2024-01-31 16:06:29,829 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-31 16:06:29,830 INFO L98 nessWitnessExtractor]: Location invariant before [L686-L686] (unsigned long )arg == 0UL [2024-01-31 16:06:29,830 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (g == 42) && ((unsigned long )arg == 0UL) [2024-01-31 16:06:29,830 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (unsigned long )arg == 0UL [2024-01-31 16:06:29,830 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] g == 2 [2024-01-31 16:06:29,830 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] ((((0 <= g) && (g <= 42)) && (g <= 127)) && (g % 2 == 0)) && ((g == 0 || g == 2) || g == 42) [2024-01-31 16:06:29,830 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] g == 0 [2024-01-31 16:06:29,831 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] ((((0 <= g) && (g <= 42)) && (g <= 127)) && (g % 2 == 0)) && ((g == 0 || g == 2) || g == 42) [2024-01-31 16:06:29,873 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:06:30,111 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/13-privatized_33-traces-v-matters_true.i[1093,1106] [2024-01-31 16:06:30,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:06:30,282 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:06:30,294 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/13-privatized_33-traces-v-matters_true.i[1093,1106] 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 Start Parsing Local [2024-01-31 16:06:30,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:06:30,405 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:06:30,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30 WrapperNode [2024-01-31 16:06:30,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:06:30,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:06:30,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:06:30,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:06:30,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,458 INFO L138 Inliner]: procedures = 163, calls = 40, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-01-31 16:06:30,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:06:30,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:06:30,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:06:30,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:06:30,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,540 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 5, 5, 1, 5]. 28 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 0, 5]. The 1 writes are split as follows [0, 0, 0, 1, 0]. [2024-01-31 16:06:30,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:06:30,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:06:30,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:06:30,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:06:30,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (1/1) ... [2024-01-31 16:06:30,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:06:30,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:06:30,615 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) [2024-01-31 16:06:30,625 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 [2024-01-31 16:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 16:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-31 16:06:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-31 16:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 16:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:06:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:06:30,682 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:06:30,853 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:06:30,854 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:06:31,045 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:06:31,046 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:06:31,118 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:06:31,118 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:06:31,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:06:31 BoogieIcfgContainer [2024-01-31 16:06:31,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:06:31,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:06:31,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:06:31,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:06:31,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:06:28" (1/4) ... [2024-01-31 16:06:31,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686f971c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:06:31, skipping insertion in model container [2024-01-31 16:06:31,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:06:29" (2/4) ... [2024-01-31 16:06:31,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686f971c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:06:31, skipping insertion in model container [2024-01-31 16:06:31,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:06:30" (3/4) ... [2024-01-31 16:06:31,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686f971c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:06:31, skipping insertion in model container [2024-01-31 16:06:31,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:06:31" (4/4) ... [2024-01-31 16:06:31,125 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_33-traces-v-matters_true.i [2024-01-31 16:06:31,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:06:31,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-01-31 16:06:31,137 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:06:31,172 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:06:31,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 112 flow [2024-01-31 16:06:31,270 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-01-31 16:06:31,270 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:06:31,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-01-31 16:06:31,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 54 transitions, 112 flow [2024-01-31 16:06:31,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 53 transitions, 109 flow [2024-01-31 16:06:31,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:06:31,292 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;@7bd7438f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:06:31,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-01-31 16:06:31,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:06:31,294 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:06:31,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:06:31,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:31,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:06:31,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:31,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash 8164, now seen corresponding path program 1 times [2024-01-31 16:06:31,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959001189] [2024-01-31 16:06:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:31,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:31,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959001189] [2024-01-31 16:06:31,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959001189] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:31,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:31,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:06:31,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498043144] [2024-01-31 16:06:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:31,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:06:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:31,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:06:31,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:06:31,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-01-31 16:06:31,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-01-31 16:06:31,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:31,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-01-31 16:06:31,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:31,742 INFO L124 PetriNetUnfolderBase]: 115/399 cut-off events. [2024-01-31 16:06:31,742 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:06:31,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 399 events. 115/399 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2075 event pairs, 67 based on Foata normal form. 15/383 useless extension candidates. Maximal degree in co-relation 648. Up to 236 conditions per place. [2024-01-31 16:06:31,747 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 29 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-01-31 16:06:31,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 183 flow [2024-01-31 16:06:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:06:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:06:31,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-01-31 16:06:31,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-01-31 16:06:31,761 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 109 flow. Second operand 3 states and 117 transitions. [2024-01-31 16:06:31,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 183 flow [2024-01-31 16:06:31,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:06:31,768 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 125 flow [2024-01-31 16:06:31,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-01-31 16:06:31,773 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-01-31 16:06:31,773 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 125 flow [2024-01-31 16:06:31,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-01-31 16:06:31,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:31,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:06:31,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:06:31,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:31,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash 243521589, now seen corresponding path program 1 times [2024-01-31 16:06:31,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520225011] [2024-01-31 16:06:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:31,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:31,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520225011] [2024-01-31 16:06:31,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520225011] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:31,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:31,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:06:31,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642546140] [2024-01-31 16:06:31,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:31,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:06:31,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:31,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:06:31,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:06:32,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 54 [2024-01-31 16:06:32,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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) [2024-01-31 16:06:32,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:32,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 54 [2024-01-31 16:06:32,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:32,087 INFO L124 PetriNetUnfolderBase]: 72/313 cut-off events. [2024-01-31 16:06:32,088 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-01-31 16:06:32,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 313 events. 72/313 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1468 event pairs, 42 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 505. Up to 153 conditions per place. [2024-01-31 16:06:32,090 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 28 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-01-31 16:06:32,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 198 flow [2024-01-31 16:06:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:06:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:06:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-01-31 16:06:32,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6990740740740741 [2024-01-31 16:06:32,092 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 125 flow. Second operand 4 states and 151 transitions. [2024-01-31 16:06:32,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 198 flow [2024-01-31 16:06:32,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:06:32,093 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 120 flow [2024-01-31 16:06:32,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-01-31 16:06:32,094 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-01-31 16:06:32,094 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 120 flow [2024-01-31 16:06:32,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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) [2024-01-31 16:06:32,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:32,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:06:32,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:32,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash 552177001, now seen corresponding path program 1 times [2024-01-31 16:06:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893597706] [2024-01-31 16:06:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:32,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:32,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893597706] [2024-01-31 16:06:32,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893597706] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:32,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:32,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:06:32,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306537518] [2024-01-31 16:06:32,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:32,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:06:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:32,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:06:32,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:06:32,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-01-31 16:06:32,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-01-31 16:06:32,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:32,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-01-31 16:06:32,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:32,313 INFO L124 PetriNetUnfolderBase]: 163/480 cut-off events. [2024-01-31 16:06:32,313 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-01-31 16:06:32,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 480 events. 163/480 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2441 event pairs, 81 based on Foata normal form. 4/460 useless extension candidates. Maximal degree in co-relation 887. Up to 317 conditions per place. [2024-01-31 16:06:32,316 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 40 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-01-31 16:06:32,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 238 flow [2024-01-31 16:06:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:06:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:06:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-01-31 16:06:32,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-01-31 16:06:32,318 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 120 flow. Second operand 4 states and 119 transitions. [2024-01-31 16:06:32,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 238 flow [2024-01-31 16:06:32,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:06:32,319 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 145 flow [2024-01-31 16:06:32,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-01-31 16:06:32,320 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-01-31 16:06:32,320 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 145 flow [2024-01-31 16:06:32,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-01-31 16:06:32,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:32,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:06:32,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:32,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,321 INFO L85 PathProgramCache]: Analyzing trace with hash 994550028, now seen corresponding path program 1 times [2024-01-31 16:06:32,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289991609] [2024-01-31 16:06:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:32,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:32,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289991609] [2024-01-31 16:06:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289991609] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:32,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:06:32,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519569306] [2024-01-31 16:06:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:32,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:06:32,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:32,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:06:32,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:06:32,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-01-31 16:06:32,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:32,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:32,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-01-31 16:06:32,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:32,451 INFO L124 PetriNetUnfolderBase]: 145/519 cut-off events. [2024-01-31 16:06:32,451 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-01-31 16:06:32,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 519 events. 145/519 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3019 event pairs, 57 based on Foata normal form. 18/499 useless extension candidates. Maximal degree in co-relation 929. Up to 225 conditions per place. [2024-01-31 16:06:32,455 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 36 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-01-31 16:06:32,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 251 flow [2024-01-31 16:06:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:06:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:06:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-01-31 16:06:32,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7654320987654321 [2024-01-31 16:06:32,458 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 145 flow. Second operand 3 states and 124 transitions. [2024-01-31 16:06:32,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 251 flow [2024-01-31 16:06:32,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:06:32,461 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 169 flow [2024-01-31 16:06:32,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-01-31 16:06:32,462 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-01-31 16:06:32,462 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 169 flow [2024-01-31 16:06:32,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:32,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:32,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:06:32,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:32,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1302985996, now seen corresponding path program 1 times [2024-01-31 16:06:32,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032575661] [2024-01-31 16:06:32,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:32,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:32,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032575661] [2024-01-31 16:06:32,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032575661] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:32,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:32,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:06:32,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071718306] [2024-01-31 16:06:32,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:32,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:06:32,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:32,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:06:32,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:06:32,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-01-31 16:06:32,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2024-01-31 16:06:32,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:32,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-01-31 16:06:32,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:32,629 INFO L124 PetriNetUnfolderBase]: 179/560 cut-off events. [2024-01-31 16:06:32,630 INFO L125 PetriNetUnfolderBase]: For 211/217 co-relation queries the response was YES. [2024-01-31 16:06:32,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 560 events. 179/560 cut-off events. For 211/217 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3088 event pairs, 55 based on Foata normal form. 62/601 useless extension candidates. Maximal degree in co-relation 1159. Up to 227 conditions per place. [2024-01-31 16:06:32,632 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 51 selfloop transitions, 5 changer transitions 1/71 dead transitions. [2024-01-31 16:06:32,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 313 flow [2024-01-31 16:06:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:06:32,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:06:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-01-31 16:06:32,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-01-31 16:06:32,633 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 169 flow. Second operand 4 states and 125 transitions. [2024-01-31 16:06:32,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 313 flow [2024-01-31 16:06:32,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 303 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:06:32,635 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 164 flow [2024-01-31 16:06:32,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-01-31 16:06:32,636 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-01-31 16:06:32,636 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 164 flow [2024-01-31 16:06:32,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2024-01-31 16:06:32,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:32,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:06:32,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:32,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1505845666, now seen corresponding path program 1 times [2024-01-31 16:06:32,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644855204] [2024-01-31 16:06:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:32,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:32,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644855204] [2024-01-31 16:06:32,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644855204] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:32,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:32,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:06:32,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892290694] [2024-01-31 16:06:32,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:32,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:06:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:32,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:06:32,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:06:32,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 54 [2024-01-31 16:06:32,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-01-31 16:06:32,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:32,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 54 [2024-01-31 16:06:32,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:32,783 INFO L124 PetriNetUnfolderBase]: 60/299 cut-off events. [2024-01-31 16:06:32,784 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-01-31 16:06:32,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 299 events. 60/299 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1487 event pairs, 28 based on Foata normal form. 7/287 useless extension candidates. Maximal degree in co-relation 547. Up to 102 conditions per place. [2024-01-31 16:06:32,785 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 26 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2024-01-31 16:06:32,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 243 flow [2024-01-31 16:06:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:06:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:06:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-01-31 16:06:32,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7731481481481481 [2024-01-31 16:06:32,786 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 164 flow. Second operand 4 states and 167 transitions. [2024-01-31 16:06:32,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 243 flow [2024-01-31 16:06:32,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 221 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-31 16:06:32,788 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 158 flow [2024-01-31 16:06:32,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-01-31 16:06:32,788 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-01-31 16:06:32,788 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 158 flow [2024-01-31 16:06:32,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-01-31 16:06:32,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:32,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:06:32,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:32,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash 432920634, now seen corresponding path program 1 times [2024-01-31 16:06:32,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282596708] [2024-01-31 16:06:32,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:32,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282596708] [2024-01-31 16:06:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282596708] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:32,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:32,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:06:32,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327814298] [2024-01-31 16:06:32,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:32,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:06:32,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:32,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:06:32,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:06:32,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-01-31 16:06:32,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-01-31 16:06:32,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:32,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-01-31 16:06:32,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:32,987 INFO L124 PetriNetUnfolderBase]: 134/456 cut-off events. [2024-01-31 16:06:32,987 INFO L125 PetriNetUnfolderBase]: For 155/157 co-relation queries the response was YES. [2024-01-31 16:06:32,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 456 events. 134/456 cut-off events. For 155/157 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2351 event pairs, 57 based on Foata normal form. 10/444 useless extension candidates. Maximal degree in co-relation 944. Up to 197 conditions per place. [2024-01-31 16:06:32,989 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 51 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-01-31 16:06:32,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 337 flow [2024-01-31 16:06:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:06:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:06:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-01-31 16:06:32,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-01-31 16:06:32,990 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 158 flow. Second operand 4 states and 125 transitions. [2024-01-31 16:06:32,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 337 flow [2024-01-31 16:06:32,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:06:32,991 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 195 flow [2024-01-31 16:06:32,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-01-31 16:06:32,992 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-01-31 16:06:32,992 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 195 flow [2024-01-31 16:06:32,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-01-31 16:06:32,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:32,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:06:32,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:32,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,993 INFO L85 PathProgramCache]: Analyzing trace with hash -944226412, now seen corresponding path program 2 times [2024-01-31 16:06:32,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459887625] [2024-01-31 16:06:32,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:33,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:33,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459887625] [2024-01-31 16:06:33,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459887625] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:33,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:33,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:06:33,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762958681] [2024-01-31 16:06:33,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:33,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:06:33,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:33,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:06:33,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:06:33,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-01-31 16:06:33,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-01-31 16:06:33,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:33,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-01-31 16:06:33,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:33,188 INFO L124 PetriNetUnfolderBase]: 147/495 cut-off events. [2024-01-31 16:06:33,188 INFO L125 PetriNetUnfolderBase]: For 346/348 co-relation queries the response was YES. [2024-01-31 16:06:33,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 495 events. 147/495 cut-off events. For 346/348 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2596 event pairs, 37 based on Foata normal form. 8/486 useless extension candidates. Maximal degree in co-relation 1093. Up to 166 conditions per place. [2024-01-31 16:06:33,190 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 46 selfloop transitions, 9 changer transitions 2/71 dead transitions. [2024-01-31 16:06:33,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 360 flow [2024-01-31 16:06:33,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:06:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:06:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-01-31 16:06:33,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-01-31 16:06:33,191 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 195 flow. Second operand 4 states and 123 transitions. [2024-01-31 16:06:33,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 360 flow [2024-01-31 16:06:33,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 355 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:06:33,193 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 215 flow [2024-01-31 16:06:33,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-01-31 16:06:33,193 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-01-31 16:06:33,194 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 215 flow [2024-01-31 16:06:33,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-01-31 16:06:33,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:33,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:33,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:06:33,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:33,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1526361693, now seen corresponding path program 1 times [2024-01-31 16:06:33,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:33,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468332329] [2024-01-31 16:06:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:33,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:33,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468332329] [2024-01-31 16:06:33,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468332329] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:33,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:33,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:06:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856554381] [2024-01-31 16:06:33,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:33,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:06:33,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:33,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:06:33,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:06:33,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2024-01-31 16:06:33,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-01-31 16:06:33,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:33,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2024-01-31 16:06:33,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:33,324 INFO L124 PetriNetUnfolderBase]: 144/463 cut-off events. [2024-01-31 16:06:33,324 INFO L125 PetriNetUnfolderBase]: For 479/481 co-relation queries the response was YES. [2024-01-31 16:06:33,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 463 events. 144/463 cut-off events. For 479/481 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2443 event pairs, 56 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 1117. Up to 147 conditions per place. [2024-01-31 16:06:33,326 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 28 selfloop transitions, 7 changer transitions 26/79 dead transitions. [2024-01-31 16:06:33,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 436 flow [2024-01-31 16:06:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:06:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:06:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-01-31 16:06:33,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-01-31 16:06:33,326 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 215 flow. Second operand 5 states and 177 transitions. [2024-01-31 16:06:33,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 436 flow [2024-01-31 16:06:33,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 417 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:06:33,328 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 219 flow [2024-01-31 16:06:33,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-01-31 16:06:33,329 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-01-31 16:06:33,329 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 219 flow [2024-01-31 16:06:33,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-01-31 16:06:33,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:33,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:33,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:06:33,329 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:33,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2047517859, now seen corresponding path program 1 times [2024-01-31 16:06:33,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078159930] [2024-01-31 16:06:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:33,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:33,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078159930] [2024-01-31 16:06:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078159930] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:33,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:33,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:06:33,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337483209] [2024-01-31 16:06:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:33,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:06:33,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:33,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:06:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:06:33,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 54 [2024-01-31 16:06:33,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2024-01-31 16:06:33,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:33,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 54 [2024-01-31 16:06:33,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:33,524 INFO L124 PetriNetUnfolderBase]: 50/269 cut-off events. [2024-01-31 16:06:33,525 INFO L125 PetriNetUnfolderBase]: For 389/391 co-relation queries the response was YES. [2024-01-31 16:06:33,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 269 events. 50/269 cut-off events. For 389/391 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1215 event pairs, 11 based on Foata normal form. 3/266 useless extension candidates. Maximal degree in co-relation 651. Up to 89 conditions per place. [2024-01-31 16:06:33,526 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 18 selfloop transitions, 5 changer transitions 9/55 dead transitions. [2024-01-31 16:06:33,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 303 flow [2024-01-31 16:06:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:06:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:06:33,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-01-31 16:06:33,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-31 16:06:33,527 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 219 flow. Second operand 4 states and 162 transitions. [2024-01-31 16:06:33,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 303 flow [2024-01-31 16:06:33,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 275 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:33,529 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 174 flow [2024-01-31 16:06:33,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2024-01-31 16:06:33,529 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-01-31 16:06:33,530 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 174 flow [2024-01-31 16:06:33,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2024-01-31 16:06:33,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:33,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:33,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:06:33,530 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:33,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:33,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1630417413, now seen corresponding path program 1 times [2024-01-31 16:06:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:33,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812504136] [2024-01-31 16:06:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:33,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:33,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812504136] [2024-01-31 16:06:33,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812504136] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:33,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:33,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:06:33,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116979230] [2024-01-31 16:06:33,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:33,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:06:33,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:33,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:06:33,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:06:33,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 54 [2024-01-31 16:06:33,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2024-01-31 16:06:33,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:33,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 54 [2024-01-31 16:06:33,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:33,637 INFO L124 PetriNetUnfolderBase]: 16/108 cut-off events. [2024-01-31 16:06:33,637 INFO L125 PetriNetUnfolderBase]: For 126/128 co-relation queries the response was YES. [2024-01-31 16:06:33,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 108 events. 16/108 cut-off events. For 126/128 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 283 event pairs, 1 based on Foata normal form. 8/112 useless extension candidates. Maximal degree in co-relation 248. Up to 38 conditions per place. [2024-01-31 16:06:33,638 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 21 selfloop transitions, 5 changer transitions 1/50 dead transitions. [2024-01-31 16:06:33,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 50 transitions, 250 flow [2024-01-31 16:06:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:06:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:06:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-01-31 16:06:33,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-31 16:06:33,639 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 174 flow. Second operand 4 states and 162 transitions. [2024-01-31 16:06:33,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 50 transitions, 250 flow [2024-01-31 16:06:33,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 222 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:33,640 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 170 flow [2024-01-31 16:06:33,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2024-01-31 16:06:33,641 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2024-01-31 16:06:33,641 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 170 flow [2024-01-31 16:06:33,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2024-01-31 16:06:33,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:33,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:33,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:06:33,641 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 19 more)] === [2024-01-31 16:06:33,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1982805180, now seen corresponding path program 1 times [2024-01-31 16:06:33,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:33,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508975364] [2024-01-31 16:06:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:33,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:33,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:33,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508975364] [2024-01-31 16:06:33,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508975364] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:33,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:33,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:06:33,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892942897] [2024-01-31 16:06:33,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:33,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:06:33,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:33,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:06:33,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:06:33,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 54 [2024-01-31 16:06:33,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-01-31 16:06:33,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:33,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 54 [2024-01-31 16:06:33,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:33,844 INFO L124 PetriNetUnfolderBase]: 11/73 cut-off events. [2024-01-31 16:06:33,844 INFO L125 PetriNetUnfolderBase]: For 92/94 co-relation queries the response was YES. [2024-01-31 16:06:33,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 73 events. 11/73 cut-off events. For 92/94 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 226 event pairs, 8 based on Foata normal form. 1/72 useless extension candidates. Maximal degree in co-relation 163. Up to 31 conditions per place. [2024-01-31 16:06:33,844 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-01-31 16:06:33,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 31 transitions, 167 flow [2024-01-31 16:06:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:06:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:06:33,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-01-31 16:06:33,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-01-31 16:06:33,845 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 170 flow. Second operand 4 states and 152 transitions. [2024-01-31 16:06:33,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 31 transitions, 167 flow [2024-01-31 16:06:33,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 157 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:33,846 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-01-31 16:06:33,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-01-31 16:06:33,846 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2024-01-31 16:06:33,846 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-01-31 16:06:33,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-01-31 16:06:33,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 22 remaining) [2024-01-31 16:06:33,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 22 remaining) [2024-01-31 16:06:33,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 22 remaining) [2024-01-31 16:06:33,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 22 remaining) [2024-01-31 16:06:33,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (17 of 22 remaining) [2024-01-31 16:06:33,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 22 remaining) [2024-01-31 16:06:33,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 22 remaining) [2024-01-31 16:06:33,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 22 remaining) [2024-01-31 16:06:33,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 22 remaining) [2024-01-31 16:06:33,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 22 remaining) [2024-01-31 16:06:33,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 22 remaining) [2024-01-31 16:06:33,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:06:33,851 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:33,854 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:06:33,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:06:33,857 INFO L503 ceAbstractionStarter]: Automizer considered 12 witness invariants [2024-01-31 16:06:33,857 INFO L504 ceAbstractionStarter]: WitnessConsidered=12 [2024-01-31 16:06:33,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:06:33 BasicIcfg [2024-01-31 16:06:33,858 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:06:33,858 INFO L158 Benchmark]: Toolchain (without parser) took 4111.15ms. Allocated memory was 125.8MB in the beginning and 224.4MB in the end (delta: 98.6MB). Free memory was 68.4MB in the beginning and 155.2MB in the end (delta: -86.8MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2024-01-31 16:06:33,858 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:06:33,858 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:06:33,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 655.17ms. Allocated memory is still 125.8MB. Free memory was 68.4MB in the beginning and 85.5MB in the end (delta: -17.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-01-31 16:06:33,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.37ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 83.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:06:33,859 INFO L158 Benchmark]: Boogie Preprocessor took 115.39ms. Allocated memory is still 125.8MB. Free memory was 83.4MB in the beginning and 81.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:06:33,859 INFO L158 Benchmark]: RCFGBuilder took 541.45ms. Allocated memory is still 125.8MB. Free memory was 80.7MB in the beginning and 49.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-01-31 16:06:33,859 INFO L158 Benchmark]: TraceAbstraction took 2737.72ms. Allocated memory was 125.8MB in the beginning and 224.4MB in the end (delta: 98.6MB). Free memory was 48.6MB in the beginning and 155.2MB in the end (delta: -106.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:06:33,860 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 655.17ms. Allocated memory is still 125.8MB. Free memory was 68.4MB in the beginning and 85.5MB in the end (delta: -17.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.37ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 83.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 115.39ms. Allocated memory is still 125.8MB. Free memory was 83.4MB in the beginning and 81.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 541.45ms. Allocated memory is still 125.8MB. Free memory was 80.7MB in the beginning and 49.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2737.72ms. Allocated memory was 125.8MB in the beginning and 224.4MB in the end (delta: 98.6MB). Free memory was 48.6MB in the beginning and 155.2MB in the end (delta: -106.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 686]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 687]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 85 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: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 574 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 409 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 863 IncrementalHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 59 mSDtfsCounter, 863 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=9, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 1031 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:06:33,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE