./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/arithmetic_prog_ok.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/arithmetic_prog_ok.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:43:21,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:43:21,938 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:43:21,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:43:21,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:43:21,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:43:21,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:43:21,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:43:21,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:43:21,973 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:43:21,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:43:21,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:43:21,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:43:21,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:43:21,979 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:43:21,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:43:21,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:43:21,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:43:21,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:43:21,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:43:21,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:43:21,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:43:21,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:43:21,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:43:21,982 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:43:21,982 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:43:21,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:43:21,983 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:43:21,983 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:43:21,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:43:21,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:43:21,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:43:21,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:43:21,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:43:21,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:43:21,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:43:21,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:43:21,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:43:21,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:43:21,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:43:21,987 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:43:21,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:43:21,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:43:21,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:43:22,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:43:22,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:43:22,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:43:22,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:43:22,278 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:43:22,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-02-07 14:43:23,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:43:23,723 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:43:23,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-02-07 14:43:23,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682dee87e/fbba263f8d9d4d4c93c7eb84be849f39/FLAGefcfb5aa7 [2024-02-07 14:43:23,764 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682dee87e/fbba263f8d9d4d4c93c7eb84be849f39 [2024-02-07 14:43:23,765 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:43:23,766 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:43:23,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/arithmetic_prog_ok.yml/witness.yml [2024-02-07 14:43:23,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:43:23,861 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:43:23,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:43:23,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:43:23,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:43:23,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:43:23" (1/2) ... [2024-02-07 14:43:23,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3892b093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:23, skipping insertion in model container [2024-02-07 14:43:23,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:43:23" (1/2) ... [2024-02-07 14:43:23,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f9b14f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:23, skipping insertion in model container [2024-02-07 14:43:23,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:43:23" (2/2) ... [2024-02-07 14:43:23,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3892b093 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:23, skipping insertion in model container [2024-02-07 14:43:23,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:43:23" (2/2) ... [2024-02-07 14:43:23,872 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:43:23,923 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:43:23,925 INFO L76 edCorrectnessWitness]: Location invariant before [L917-L917] ((0 <= flag) && (flag <= 1)) && (flag == 0 || flag == 1) [2024-02-07 14:43:23,925 INFO L76 edCorrectnessWitness]: Location invariant before [L900-L900] (0 == j && j == 0) || (1 <= j && j <= 3) [2024-02-07 14:43:23,925 INFO L76 edCorrectnessWitness]: Location invariant before [L882-L882] num == 0 [2024-02-07 14:43:23,925 INFO L76 edCorrectnessWitness]: Location invariant before [L910-L910] total == 0UL [2024-02-07 14:43:23,926 INFO L76 edCorrectnessWitness]: Location invariant before [L902-L902] j == 4 [2024-02-07 14:43:23,926 INFO L76 edCorrectnessWitness]: Location invariant before [L897-L897] num == 1 [2024-02-07 14:43:23,926 INFO L76 edCorrectnessWitness]: Location invariant before [L918-L918] ((0 <= flag) && (flag <= 1)) && (flag == 0 || flag == 1) [2024-02-07 14:43:23,927 INFO L76 edCorrectnessWitness]: Location invariant before [L885-L885] (0 == i && i == 0) || (1 <= i && i <= 3) [2024-02-07 14:43:23,927 INFO L76 edCorrectnessWitness]: Location invariant before [L896-L896] (0 == j && j == 0) || (1 <= j && j <= 3) [2024-02-07 14:43:23,927 INFO L76 edCorrectnessWitness]: Location invariant before [L909-L909] num == 0 [2024-02-07 14:43:23,927 INFO L76 edCorrectnessWitness]: Location invariant before [L904-L904] ((0 <= flag) && (flag <= 1)) && (flag == 0 || flag == 1) [2024-02-07 14:43:23,927 INFO L76 edCorrectnessWitness]: Location invariant before [L883-L883] num == 1 [2024-02-07 14:43:23,928 INFO L76 edCorrectnessWitness]: Location invariant before [L898-L898] num == 0 [2024-02-07 14:43:23,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:43:24,329 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-02-07 14:43:24,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:43:24,344 INFO L203 MainTranslator]: Completed pre-run 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 Start Parsing Local [2024-02-07 14:43:24,451 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-02-07 14:43:24,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:43:24,526 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:43:24,527 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24 WrapperNode [2024-02-07 14:43:24,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:43:24,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:43:24,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:43:24,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:43:24,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,609 INFO L138 Inliner]: procedures = 244, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2024-02-07 14:43:24,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:43:24,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:43:24,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:43:24,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:43:24,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,638 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,656 INFO L175 MemorySlicer]: Split 31 memory accesses to 7 slices as follows [2, 1, 2, 8, 8, 8, 2]. 26 percent of accesses are in the largest equivalence class. The 27 initializations are split as follows [2, 1, 0, 8, 8, 8, 0]. The 2 writes are split as follows [0, 0, 1, 0, 0, 0, 1]. [2024-02-07 14:43:24,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:43:24,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:43:24,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:43:24,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:43:24,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (1/1) ... [2024-02-07 14:43:24,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:43:24,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:43:24,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:43:24,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:43:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:43:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:43:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-02-07 14:43:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-02-07 14:43:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-02-07 14:43:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-02-07 14:43:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-02-07 14:43:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-02-07 14:43:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-02-07 14:43:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:43:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:43:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:43:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:43:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:43:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:43:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:43:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-02-07 14:43:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:43:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:43:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:43:24,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:43:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:43:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:43:24,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:43:24,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:43:24,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:43:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:43:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-02-07 14:43:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:43:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:43:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:43:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:43:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:43:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:43:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:43:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:43:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-02-07 14:43:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:43:24,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:43:24,751 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:43:24,937 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:43:24,939 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:43:25,221 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:43:25,222 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:43:25,379 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:43:25,379 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-07 14:43:25,380 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:43:25 BoogieIcfgContainer [2024-02-07 14:43:25,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:43:25,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:43:25,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:43:25,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:43:25,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:43:23" (1/4) ... [2024-02-07 14:43:25,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93fa310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:43:25, skipping insertion in model container [2024-02-07 14:43:25,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:43:23" (2/4) ... [2024-02-07 14:43:25,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93fa310 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:43:25, skipping insertion in model container [2024-02-07 14:43:25,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:24" (3/4) ... [2024-02-07 14:43:25,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93fa310 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:43:25, skipping insertion in model container [2024-02-07 14:43:25,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:43:25" (4/4) ... [2024-02-07 14:43:25,390 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-02-07 14:43:25,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:43:25,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-02-07 14:43:25,406 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:43:25,471 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:43:25,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 146 flow [2024-02-07 14:43:25,561 INFO L124 PetriNetUnfolderBase]: 6/64 cut-off events. [2024-02-07 14:43:25,562 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 14:43:25,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 6/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2024-02-07 14:43:25,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 66 transitions, 146 flow [2024-02-07 14:43:25,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 60 transitions, 132 flow [2024-02-07 14:43:25,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:43:25,587 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;@3f5d05a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:43:25,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-02-07 14:43:25,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:43:25,591 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:43:25,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:43:25,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:25,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:43:25,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:25,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 12501, now seen corresponding path program 1 times [2024-02-07 14:43:25,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:25,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839724479] [2024-02-07 14:43:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:25,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:25,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:25,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839724479] [2024-02-07 14:43:25,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839724479] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:25,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:25,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:43:25,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864485659] [2024-02-07 14:43:25,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:25,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:25,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:25,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:25,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 66 [2024-02-07 14:43:25,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:25,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:25,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 66 [2024-02-07 14:43:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:26,327 INFO L124 PetriNetUnfolderBase]: 971/1918 cut-off events. [2024-02-07 14:43:26,327 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-02-07 14:43:26,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3599 conditions, 1918 events. 971/1918 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 10277 event pairs, 314 based on Foata normal form. 22/1786 useless extension candidates. Maximal degree in co-relation 3307. Up to 886 conditions per place. [2024-02-07 14:43:26,362 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 57 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2024-02-07 14:43:26,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 313 flow [2024-02-07 14:43:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-02-07 14:43:26,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2024-02-07 14:43:26,396 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 132 flow. Second operand 3 states and 146 transitions. [2024-02-07 14:43:26,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 313 flow [2024-02-07 14:43:26,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 299 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:43:26,408 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 164 flow [2024-02-07 14:43:26,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-02-07 14:43:26,413 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-02-07 14:43:26,413 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 164 flow [2024-02-07 14:43:26,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:26,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:26,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:43:26,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:43:26,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:26,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:26,415 INFO L85 PathProgramCache]: Analyzing trace with hash 387898, now seen corresponding path program 1 times [2024-02-07 14:43:26,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:26,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051357901] [2024-02-07 14:43:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:26,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:26,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:26,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051357901] [2024-02-07 14:43:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051357901] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:26,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:43:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386613845] [2024-02-07 14:43:26,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:26,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:26,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 66 [2024-02-07 14:43:26,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:26,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:26,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 66 [2024-02-07 14:43:26,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:26,835 INFO L124 PetriNetUnfolderBase]: 1113/2373 cut-off events. [2024-02-07 14:43:26,835 INFO L125 PetriNetUnfolderBase]: For 287/304 co-relation queries the response was YES. [2024-02-07 14:43:26,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4652 conditions, 2373 events. 1113/2373 cut-off events. For 287/304 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 14018 event pairs, 397 based on Foata normal form. 2/2306 useless extension candidates. Maximal degree in co-relation 1636. Up to 1067 conditions per place. [2024-02-07 14:43:26,851 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 49 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-02-07 14:43:26,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 315 flow [2024-02-07 14:43:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-02-07 14:43:26,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-02-07 14:43:26,857 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 164 flow. Second operand 3 states and 144 transitions. [2024-02-07 14:43:26,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 315 flow [2024-02-07 14:43:26,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:43:26,865 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 169 flow [2024-02-07 14:43:26,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2024-02-07 14:43:26,867 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-02-07 14:43:26,867 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 169 flow [2024-02-07 14:43:26,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:26,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:26,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:26,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:43:26,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:26,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1473600151, now seen corresponding path program 1 times [2024-02-07 14:43:26,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:26,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636034923] [2024-02-07 14:43:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:26,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:26,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:26,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636034923] [2024-02-07 14:43:26,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636034923] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:26,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:43:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833385808] [2024-02-07 14:43:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:26,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:26,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:26,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 66 [2024-02-07 14:43:26,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:26,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:26,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 66 [2024-02-07 14:43:26,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:27,245 INFO L124 PetriNetUnfolderBase]: 1276/2737 cut-off events. [2024-02-07 14:43:27,245 INFO L125 PetriNetUnfolderBase]: For 148/170 co-relation queries the response was YES. [2024-02-07 14:43:27,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5382 conditions, 2737 events. 1276/2737 cut-off events. For 148/170 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 15911 event pairs, 653 based on Foata normal form. 48/2669 useless extension candidates. Maximal degree in co-relation 1971. Up to 1351 conditions per place. [2024-02-07 14:43:27,262 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 53 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-02-07 14:43:27,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 82 transitions, 323 flow [2024-02-07 14:43:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-02-07 14:43:27,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2024-02-07 14:43:27,264 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 169 flow. Second operand 3 states and 149 transitions. [2024-02-07 14:43:27,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 82 transitions, 323 flow [2024-02-07 14:43:27,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 319 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:27,267 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 176 flow [2024-02-07 14:43:27,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2024-02-07 14:43:27,268 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2024-02-07 14:43:27,268 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 176 flow [2024-02-07 14:43:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:27,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:27,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:27,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:43:27,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:27,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2041387914, now seen corresponding path program 1 times [2024-02-07 14:43:27,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:27,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006099100] [2024-02-07 14:43:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:27,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:27,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:27,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006099100] [2024-02-07 14:43:27,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006099100] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:27,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:27,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:43:27,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908084983] [2024-02-07 14:43:27,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:27,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:43:27,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:27,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:43:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:43:27,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-02-07 14:43:27,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:27,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:27,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-02-07 14:43:27,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:27,608 INFO L124 PetriNetUnfolderBase]: 1199/2450 cut-off events. [2024-02-07 14:43:27,609 INFO L125 PetriNetUnfolderBase]: For 421/435 co-relation queries the response was YES. [2024-02-07 14:43:27,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5230 conditions, 2450 events. 1199/2450 cut-off events. For 421/435 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13296 event pairs, 475 based on Foata normal form. 164/2607 useless extension candidates. Maximal degree in co-relation 1842. Up to 1175 conditions per place. [2024-02-07 14:43:27,621 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 58 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2024-02-07 14:43:27,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 337 flow [2024-02-07 14:43:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:43:27,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:43:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-02-07 14:43:27,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-02-07 14:43:27,623 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 176 flow. Second operand 4 states and 159 transitions. [2024-02-07 14:43:27,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 337 flow [2024-02-07 14:43:27,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:27,626 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 168 flow [2024-02-07 14:43:27,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-02-07 14:43:27,627 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2024-02-07 14:43:27,627 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 168 flow [2024-02-07 14:43:27,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:27,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:27,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:27,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:43:27,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:27,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:27,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1749994396, now seen corresponding path program 1 times [2024-02-07 14:43:27,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:27,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023573544] [2024-02-07 14:43:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:27,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:27,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023573544] [2024-02-07 14:43:27,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023573544] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:27,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:27,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:43:27,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137154815] [2024-02-07 14:43:27,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:27,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:27,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:27,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:27,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:27,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2024-02-07 14:43:27,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:27,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:27,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2024-02-07 14:43:27,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:27,786 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([416] L895-6-->L894-2: Formula: (not (= v_~num~0_In_1 0)) InVars {~num~0=v_~num~0_In_1} OutVars{~num~0=v_~num~0_In_1} AuxVars[] AssignedVars[][41], [42#L894-2true, 88#true, 77#(= ~total~0 0), 12#L915-1true, Black: 72#(= ~num~0 0), 86#(= ~num~0 1), 81#(= thread2Thread1of1ForFork0_~j~0 0), 10#L881true]) [2024-02-07 14:43:27,786 INFO L294 olderBase$Statistics]: this new event has 32 ancestors and is cut-off event [2024-02-07 14:43:27,786 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2024-02-07 14:43:27,787 INFO L297 olderBase$Statistics]: existing Event has 26 ancestors and is cut-off event [2024-02-07 14:43:27,787 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2024-02-07 14:43:27,884 INFO L124 PetriNetUnfolderBase]: 1002/2188 cut-off events. [2024-02-07 14:43:27,884 INFO L125 PetriNetUnfolderBase]: For 453/471 co-relation queries the response was YES. [2024-02-07 14:43:27,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 2188 events. 1002/2188 cut-off events. For 453/471 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12459 event pairs, 516 based on Foata normal form. 10/2098 useless extension candidates. Maximal degree in co-relation 2143. Up to 1459 conditions per place. [2024-02-07 14:43:27,896 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 52 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-02-07 14:43:27,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 339 flow [2024-02-07 14:43:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-02-07 14:43:27,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2024-02-07 14:43:27,898 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 168 flow. Second operand 3 states and 150 transitions. [2024-02-07 14:43:27,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 339 flow [2024-02-07 14:43:27,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 329 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:43:27,902 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 176 flow [2024-02-07 14:43:27,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-02-07 14:43:27,905 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2024-02-07 14:43:27,905 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 176 flow [2024-02-07 14:43:27,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:27,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:27,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:27,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:43:27,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:27,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:27,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1260589313, now seen corresponding path program 1 times [2024-02-07 14:43:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:27,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849288282] [2024-02-07 14:43:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:28,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:28,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849288282] [2024-02-07 14:43:28,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849288282] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:28,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:28,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:43:28,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59429649] [2024-02-07 14:43:28,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:28,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:28,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:28,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:28,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2024-02-07 14:43:28,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:28,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:28,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2024-02-07 14:43:28,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:28,227 INFO L124 PetriNetUnfolderBase]: 477/1159 cut-off events. [2024-02-07 14:43:28,227 INFO L125 PetriNetUnfolderBase]: For 291/332 co-relation queries the response was YES. [2024-02-07 14:43:28,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 1159 events. 477/1159 cut-off events. For 291/332 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5707 event pairs, 184 based on Foata normal form. 70/1208 useless extension candidates. Maximal degree in co-relation 1943. Up to 449 conditions per place. [2024-02-07 14:43:28,234 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 41 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2024-02-07 14:43:28,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 316 flow [2024-02-07 14:43:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-02-07 14:43:28,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7424242424242424 [2024-02-07 14:43:28,236 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 176 flow. Second operand 3 states and 147 transitions. [2024-02-07 14:43:28,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 316 flow [2024-02-07 14:43:28,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 308 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:28,239 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 178 flow [2024-02-07 14:43:28,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-02-07 14:43:28,242 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2024-02-07 14:43:28,242 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 178 flow [2024-02-07 14:43:28,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:28,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:28,243 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] [2024-02-07 14:43:28,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:43:28,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:28,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2001813093, now seen corresponding path program 1 times [2024-02-07 14:43:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:28,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151537861] [2024-02-07 14:43:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:28,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:28,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151537861] [2024-02-07 14:43:28,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151537861] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:43:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381903522] [2024-02-07 14:43:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:28,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:43:28,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:43:28,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:43:28,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:43:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:28,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 14:43:28,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:43:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:28,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:43:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381903522] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:43:28,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:43:28,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-02-07 14:43:28,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134509349] [2024-02-07 14:43:28,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:43:28,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:43:28,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:28,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:43:28,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:43:28,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2024-02-07 14:43:28,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:28,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:28,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2024-02-07 14:43:28,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:28,959 INFO L124 PetriNetUnfolderBase]: 1129/2424 cut-off events. [2024-02-07 14:43:28,959 INFO L125 PetriNetUnfolderBase]: For 953/1029 co-relation queries the response was YES. [2024-02-07 14:43:28,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5847 conditions, 2424 events. 1129/2424 cut-off events. For 953/1029 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 10963 event pairs, 169 based on Foata normal form. 96/2426 useless extension candidates. Maximal degree in co-relation 2030. Up to 400 conditions per place. [2024-02-07 14:43:28,971 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 113 selfloop transitions, 12 changer transitions 0/145 dead transitions. [2024-02-07 14:43:28,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 145 transitions, 755 flow [2024-02-07 14:43:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:43:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:43:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 335 transitions. [2024-02-07 14:43:28,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7251082251082251 [2024-02-07 14:43:28,973 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 178 flow. Second operand 7 states and 335 transitions. [2024-02-07 14:43:28,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 145 transitions, 755 flow [2024-02-07 14:43:28,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 145 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:28,976 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 244 flow [2024-02-07 14:43:28,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=244, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2024-02-07 14:43:28,977 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2024-02-07 14:43:28,977 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 244 flow [2024-02-07 14:43:28,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:28,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:28,978 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:28,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:43:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:43:29,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:29,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:29,194 INFO L85 PathProgramCache]: Analyzing trace with hash 468669487, now seen corresponding path program 1 times [2024-02-07 14:43:29,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:29,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528717438] [2024-02-07 14:43:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:29,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528717438] [2024-02-07 14:43:29,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528717438] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:43:29,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041620181] [2024-02-07 14:43:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:29,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:43:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:43:29,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:43:29,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 14:43:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:29,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-07 14:43:29,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:43:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:29,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 14:43:29,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041620181] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:29,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 14:43:29,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-02-07 14:43:29,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959615851] [2024-02-07 14:43:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:29,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:43:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:29,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:43:29,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:43:29,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 66 [2024-02-07 14:43:29,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:29,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:29,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 66 [2024-02-07 14:43:29,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:29,765 INFO L124 PetriNetUnfolderBase]: 1058/2344 cut-off events. [2024-02-07 14:43:29,765 INFO L125 PetriNetUnfolderBase]: For 1554/1572 co-relation queries the response was YES. [2024-02-07 14:43:29,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5836 conditions, 2344 events. 1058/2344 cut-off events. For 1554/1572 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 10867 event pairs, 211 based on Foata normal form. 0/2336 useless extension candidates. Maximal degree in co-relation 3470. Up to 951 conditions per place. [2024-02-07 14:43:29,778 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 76 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2024-02-07 14:43:29,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 574 flow [2024-02-07 14:43:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:43:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:43:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-02-07 14:43:29,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2024-02-07 14:43:29,780 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 244 flow. Second operand 5 states and 228 transitions. [2024-02-07 14:43:29,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 574 flow [2024-02-07 14:43:29,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 543 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:29,785 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 235 flow [2024-02-07 14:43:29,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-02-07 14:43:29,785 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2024-02-07 14:43:29,786 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 235 flow [2024-02-07 14:43:29,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:29,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:29,786 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:29,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 14:43:30,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-02-07 14:43:30,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:30,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash 547068526, now seen corresponding path program 1 times [2024-02-07 14:43:30,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:30,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490962384] [2024-02-07 14:43:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:30,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:30,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490962384] [2024-02-07 14:43:30,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490962384] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:43:30,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669339561] [2024-02-07 14:43:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:30,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:43:30,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:43:30,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:43:30,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 14:43:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:30,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-07 14:43:30,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:43:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:30,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 14:43:30,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669339561] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:30,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 14:43:30,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-02-07 14:43:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338476264] [2024-02-07 14:43:30,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:30,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:43:30,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:30,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:43:30,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:43:30,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2024-02-07 14:43:30,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 235 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) [2024-02-07 14:43:30,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:30,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2024-02-07 14:43:30,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:30,603 INFO L124 PetriNetUnfolderBase]: 989/2236 cut-off events. [2024-02-07 14:43:30,603 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2024-02-07 14:43:30,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5555 conditions, 2236 events. 989/2236 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 10376 event pairs, 121 based on Foata normal form. 114/2340 useless extension candidates. Maximal degree in co-relation 3371. Up to 914 conditions per place. [2024-02-07 14:43:30,614 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 68 selfloop transitions, 7 changer transitions 6/101 dead transitions. [2024-02-07 14:43:30,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 529 flow [2024-02-07 14:43:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:43:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:43:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-02-07 14:43:30,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6878787878787879 [2024-02-07 14:43:30,616 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 235 flow. Second operand 5 states and 227 transitions. [2024-02-07 14:43:30,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 529 flow [2024-02-07 14:43:30,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 515 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-07 14:43:30,621 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 226 flow [2024-02-07 14:43:30,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-02-07 14:43:30,623 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2024-02-07 14:43:30,623 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 226 flow [2024-02-07 14:43:30,623 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) [2024-02-07 14:43:30,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:30,623 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:30,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 14:43:30,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:43:30,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:30,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 587244844, now seen corresponding path program 1 times [2024-02-07 14:43:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:30,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538644622] [2024-02-07 14:43:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:30,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-02-07 14:43:30,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:30,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538644622] [2024-02-07 14:43:30,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538644622] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:30,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:30,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:43:30,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744067108] [2024-02-07 14:43:30,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:30,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:43:30,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:30,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:43:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:43:30,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 66 [2024-02-07 14:43:30,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:30,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:30,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 66 [2024-02-07 14:43:30,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:31,229 INFO L124 PetriNetUnfolderBase]: 1014/2231 cut-off events. [2024-02-07 14:43:31,229 INFO L125 PetriNetUnfolderBase]: For 2244/2250 co-relation queries the response was YES. [2024-02-07 14:43:31,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5945 conditions, 2231 events. 1014/2231 cut-off events. For 2244/2250 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 9908 event pairs, 215 based on Foata normal form. 0/2217 useless extension candidates. Maximal degree in co-relation 3582. Up to 1233 conditions per place. [2024-02-07 14:43:31,238 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 63 selfloop transitions, 8 changer transitions 3/93 dead transitions. [2024-02-07 14:43:31,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 494 flow [2024-02-07 14:43:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:43:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:43:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-02-07 14:43:31,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6757575757575758 [2024-02-07 14:43:31,240 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 226 flow. Second operand 5 states and 223 transitions. [2024-02-07 14:43:31,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 494 flow [2024-02-07 14:43:31,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 93 transitions, 491 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:43:31,246 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 237 flow [2024-02-07 14:43:31,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2024-02-07 14:43:31,246 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2024-02-07 14:43:31,247 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 237 flow [2024-02-07 14:43:31,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:31,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:31,247 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:43:31,247 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:31,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1859988100, now seen corresponding path program 1 times [2024-02-07 14:43:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:31,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83597998] [2024-02-07 14:43:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-02-07 14:43:31,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:31,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83597998] [2024-02-07 14:43:31,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83597998] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:31,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:31,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:43:31,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133049387] [2024-02-07 14:43:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:31,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:31,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 66 [2024-02-07 14:43:31,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:31,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:31,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 66 [2024-02-07 14:43:31,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:31,587 INFO L124 PetriNetUnfolderBase]: 815/1920 cut-off events. [2024-02-07 14:43:31,588 INFO L125 PetriNetUnfolderBase]: For 2674/2674 co-relation queries the response was YES. [2024-02-07 14:43:31,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5069 conditions, 1920 events. 815/1920 cut-off events. For 2674/2674 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 8768 event pairs, 583 based on Foata normal form. 4/1920 useless extension candidates. Maximal degree in co-relation 3038. Up to 1353 conditions per place. [2024-02-07 14:43:31,637 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 45 selfloop transitions, 1 changer transitions 1/66 dead transitions. [2024-02-07 14:43:31,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 66 transitions, 362 flow [2024-02-07 14:43:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-02-07 14:43:31,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-02-07 14:43:31,639 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 237 flow. Second operand 3 states and 132 transitions. [2024-02-07 14:43:31,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 66 transitions, 362 flow [2024-02-07 14:43:31,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 344 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-07 14:43:31,643 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 215 flow [2024-02-07 14:43:31,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-02-07 14:43:31,644 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2024-02-07 14:43:31,644 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 215 flow [2024-02-07 14:43:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:31,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:31,644 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:31,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:43:31,644 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:31,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:31,645 INFO L85 PathProgramCache]: Analyzing trace with hash 690973762, now seen corresponding path program 1 times [2024-02-07 14:43:31,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:31,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969450828] [2024-02-07 14:43:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:31,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-07 14:43:32,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:32,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969450828] [2024-02-07 14:43:32,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969450828] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:43:32,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663389139] [2024-02-07 14:43:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:32,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:43:32,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:43:32,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:43:32,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-07 14:43:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:32,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 23 conjunts are in the unsatisfiable core [2024-02-07 14:43:32,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:43:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 117 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-07 14:43:32,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:43:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-07 14:43:33,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663389139] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:43:33,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:43:33,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 30 [2024-02-07 14:43:33,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085092796] [2024-02-07 14:43:33,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:43:33,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-07 14:43:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-07 14:43:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2024-02-07 14:43:33,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 66 [2024-02-07 14:43:33,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 215 flow. Second operand has 30 states, 30 states have (on average 32.7) internal successors, (981), 30 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:33,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:33,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 66 [2024-02-07 14:43:33,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:34,829 INFO L124 PetriNetUnfolderBase]: 1418/3119 cut-off events. [2024-02-07 14:43:34,830 INFO L125 PetriNetUnfolderBase]: For 3106/3106 co-relation queries the response was YES. [2024-02-07 14:43:34,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8206 conditions, 3119 events. 1418/3119 cut-off events. For 3106/3106 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 14853 event pairs, 195 based on Foata normal form. 2/3117 useless extension candidates. Maximal degree in co-relation 7388. Up to 591 conditions per place. [2024-02-07 14:43:34,842 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 136 selfloop transitions, 9 changer transitions 47/207 dead transitions. [2024-02-07 14:43:34,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 207 transitions, 1144 flow [2024-02-07 14:43:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:43:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:43:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 515 transitions. [2024-02-07 14:43:34,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6502525252525253 [2024-02-07 14:43:34,845 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 215 flow. Second operand 12 states and 515 transitions. [2024-02-07 14:43:34,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 207 transitions, 1144 flow [2024-02-07 14:43:34,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 207 transitions, 1142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:34,853 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 258 flow [2024-02-07 14:43:34,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=258, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2024-02-07 14:43:34,854 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2024-02-07 14:43:34,854 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 258 flow [2024-02-07 14:43:34,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 32.7) internal successors, (981), 30 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:34,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:34,855 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:34,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-07 14:43:35,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:43:35,071 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-02-07 14:43:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:35,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1215227993, now seen corresponding path program 2 times [2024-02-07 14:43:35,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:35,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018172182] [2024-02-07 14:43:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 168 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-02-07 14:43:35,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018172182] [2024-02-07 14:43:35,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018172182] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:43:35,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071550809] [2024-02-07 14:43:35,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:43:35,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:43:35,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:43:35,245 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:43:35,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-07 14:43:35,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:43:35,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:43:35,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-07 14:43:35,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:43:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-02-07 14:43:35,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 14:43:35,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071550809] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:35,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 14:43:35,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-02-07 14:43:35,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299795203] [2024-02-07 14:43:35,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:35,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:43:35,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:43:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:43:35,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 66 [2024-02-07 14:43:35,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:35,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:35,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 66 [2024-02-07 14:43:35,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:35,778 INFO L124 PetriNetUnfolderBase]: 787/1743 cut-off events. [2024-02-07 14:43:35,778 INFO L125 PetriNetUnfolderBase]: For 2030/2030 co-relation queries the response was YES. [2024-02-07 14:43:35,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 1743 events. 787/1743 cut-off events. For 2030/2030 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 7819 event pairs, 74 based on Foata normal form. 22/1763 useless extension candidates. Maximal degree in co-relation 4640. Up to 505 conditions per place. [2024-02-07 14:43:35,784 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 0 selfloop transitions, 0 changer transitions 127/127 dead transitions. [2024-02-07 14:43:35,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 127 transitions, 799 flow [2024-02-07 14:43:35,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:43:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:43:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 320 transitions. [2024-02-07 14:43:35,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6926406926406926 [2024-02-07 14:43:35,786 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 258 flow. Second operand 7 states and 320 transitions. [2024-02-07 14:43:35,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 127 transitions, 799 flow [2024-02-07 14:43:35,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 127 transitions, 727 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-02-07 14:43:35,790 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2024-02-07 14:43:35,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2024-02-07 14:43:35,791 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2024-02-07 14:43:35,791 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2024-02-07 14:43:35,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:35,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 25 remaining) [2024-02-07 14:43:35,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 25 remaining) [2024-02-07 14:43:35,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 25 remaining) [2024-02-07 14:43:35,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 25 remaining) [2024-02-07 14:43:35,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 25 remaining) [2024-02-07 14:43:35,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 25 remaining) [2024-02-07 14:43:35,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 25 remaining) [2024-02-07 14:43:35,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 25 remaining) [2024-02-07 14:43:35,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 25 remaining) [2024-02-07 14:43:35,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 25 remaining) [2024-02-07 14:43:35,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 25 remaining) [2024-02-07 14:43:35,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 25 remaining) [2024-02-07 14:43:35,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 25 remaining) [2024-02-07 14:43:35,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (11 of 25 remaining) [2024-02-07 14:43:35,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2024-02-07 14:43:35,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2024-02-07 14:43:35,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 25 remaining) [2024-02-07 14:43:35,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 25 remaining) [2024-02-07 14:43:35,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 25 remaining) [2024-02-07 14:43:35,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 25 remaining) [2024-02-07 14:43:35,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 25 remaining) [2024-02-07 14:43:35,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 25 remaining) [2024-02-07 14:43:35,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 25 remaining) [2024-02-07 14:43:35,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 25 remaining) [2024-02-07 14:43:35,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 25 remaining) [2024-02-07 14:43:35,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-07 14:43:36,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-07 14:43:36,017 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:36,021 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:43:36,021 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:43:36,025 INFO L503 ceAbstractionStarter]: Automizer considered 13 witness invariants [2024-02-07 14:43:36,025 INFO L504 ceAbstractionStarter]: WitnessConsidered=13 [2024-02-07 14:43:36,026 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:43:36 BasicIcfg [2024-02-07 14:43:36,026 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:43:36,026 INFO L158 Benchmark]: Toolchain (without parser) took 12165.54ms. Allocated memory was 165.7MB in the beginning and 436.2MB in the end (delta: 270.5MB). Free memory was 102.0MB in the beginning and 150.7MB in the end (delta: -48.7MB). Peak memory consumption was 223.3MB. Max. memory is 16.1GB. [2024-02-07 14:43:36,026 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:43:36,027 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 165.7MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:43:36,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.45ms. Allocated memory is still 165.7MB. Free memory was 102.0MB in the beginning and 131.3MB in the end (delta: -29.4MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2024-02-07 14:43:36,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.46ms. Allocated memory was 165.7MB in the beginning and 260.0MB in the end (delta: 94.4MB). Free memory was 131.3MB in the beginning and 227.7MB in the end (delta: -96.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2024-02-07 14:43:36,027 INFO L158 Benchmark]: Boogie Preprocessor took 61.17ms. Allocated memory is still 260.0MB. Free memory was 227.7MB in the beginning and 224.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:43:36,027 INFO L158 Benchmark]: RCFGBuilder took 708.29ms. Allocated memory is still 260.0MB. Free memory was 224.5MB in the beginning and 171.0MB in the end (delta: 53.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-02-07 14:43:36,028 INFO L158 Benchmark]: TraceAbstraction took 10642.42ms. Allocated memory was 260.0MB in the beginning and 436.2MB in the end (delta: 176.2MB). Free memory was 170.0MB in the beginning and 150.7MB in the end (delta: 19.3MB). Peak memory consumption was 195.5MB. Max. memory is 16.1GB. [2024-02-07 14:43:36,029 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.19ms. Allocated memory is still 165.7MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.45ms. Allocated memory is still 165.7MB. Free memory was 102.0MB in the beginning and 131.3MB in the end (delta: -29.4MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.46ms. Allocated memory was 165.7MB in the beginning and 260.0MB in the end (delta: 94.4MB). Free memory was 131.3MB in the beginning and 227.7MB in the end (delta: -96.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.17ms. Allocated memory is still 260.0MB. Free memory was 227.7MB in the beginning and 224.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 708.29ms. Allocated memory is still 260.0MB. Free memory was 224.5MB in the beginning and 171.0MB in the end (delta: 53.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10642.42ms. Allocated memory was 260.0MB in the beginning and 436.2MB in the end (delta: 176.2MB). Free memory was 170.0MB in the beginning and 150.7MB in the end (delta: 19.3MB). Peak memory consumption was 195.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 882]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 883]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 885]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 902]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 904]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 896]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 897]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 898]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 900]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 909]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 910]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 917]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 918]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 919]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 25 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: 10.5s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 812 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 747 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4313 IncrementalHoareTripleChecker+Invalid, 4374 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 21 mSDtfsCounter, 4313 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 484 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=12, InterpolantAutomatonStates: 63, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 858 NumberOfCodeBlocks, 858 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 963 ConstructedInterpolants, 0 QuantifiedInterpolants, 3503 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1791 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 20 InterpolantComputations, 11 PerfectInterpolantSequences, 624/1035 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:43:36,056 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