./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.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/arithmetic_prog_ok.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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.2023-12-19_14-39-08.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-?-80b1b13-m [2024-01-31 17:26:17,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:26:17,206 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:26:17,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:26:17,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:26:17,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:26:17,223 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:26:17,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:26:17,224 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:26:17,224 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:26:17,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:26:17,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:26:17,225 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:26:17,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:26:17,226 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:26:17,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:26:17,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:26:17,226 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:26:17,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:26:17,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:26:17,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:26:17,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:26:17,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:26:17,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:26:17,229 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:26:17,229 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:26:17,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:26:17,230 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:26:17,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:26:17,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:26:17,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:26:17,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:26:17,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:26:17,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:26:17,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:26:17,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:26:17,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:26:17,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:26:17,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:26:17,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:26:17,233 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:26:17,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:26:17,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:26:17,234 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:26:17,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:26:17,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:26:17,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:26:17,422 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:26:17,424 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:26:17,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-01-31 17:26:18,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:26:18,578 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:26:18,578 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-01-31 17:26:18,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18d40d685/f1497552cc3b44c7a3dd7f04a0f25e15/FLAGc00272747 [2024-01-31 17:26:18,604 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18d40d685/f1497552cc3b44c7a3dd7f04a0f25e15 [2024-01-31 17:26:18,606 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:26:18,607 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:26:18,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/arithmetic_prog_ok.yml/witness.yml [2024-01-31 17:26:18,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:26:18,712 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:26:18,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:26:18,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:26:18,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:26:18,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:26:18" (1/2) ... [2024-01-31 17:26:18,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577fc5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:26:18, skipping insertion in model container [2024-01-31 17:26:18,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:26:18" (1/2) ... [2024-01-31 17:26:18,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@626aca71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:26:18, skipping insertion in model container [2024-01-31 17:26:18,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:26:18" (2/2) ... [2024-01-31 17:26:18,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577fc5ea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:18, skipping insertion in model container [2024-01-31 17:26:18,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:26:18" (2/2) ... [2024-01-31 17:26:18,722 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:26:18,806 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:26:18,846 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:26:19,122 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-01-31 17:26:19,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:26:19,146 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:26:19,202 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] [2024-01-31 17:26:19,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:26:19,273 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:26:19,274 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19 WrapperNode [2024-01-31 17:26:19,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:26:19,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:26:19,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:26:19,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:26:19,282 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 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,312 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 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,340 INFO L138 Inliner]: procedures = 244, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2024-01-31 17:26:19,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:26:19,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:26:19,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:26:19,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:26:19,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,383 INFO L175 MemorySlicer]: Split 31 memory accesses to 7 slices as follows [2, 1, 8, 8, 8, 2, 2]. 26 percent of accesses are in the largest equivalence class. The 27 initializations are split as follows [2, 1, 8, 8, 8, 0, 0]. The 2 writes are split as follows [0, 0, 0, 0, 0, 1, 1]. [2024-01-31 17:26:19,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,386 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,418 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:26:19,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:26:19,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:26:19,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:26:19,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (1/1) ... [2024-01-31 17:26:19,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:26:19,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:26:19,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:26:19,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:26:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:26:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:26:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-01-31 17:26:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-01-31 17:26:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-01-31 17:26:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-01-31 17:26:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-01-31 17:26:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-01-31 17:26:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-01-31 17:26:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 17:26:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:26:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:26:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:26:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:26:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:26:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 17:26:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-31 17:26:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:26:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:26:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:26:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:26:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:26:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:26:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:26:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:26:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:26:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 17:26:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-31 17:26:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 17:26:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:26:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:26:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:26:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:26:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:26:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:26:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 17:26:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-31 17:26:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:26:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:26:19,495 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:26:19,628 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:26:19,630 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:26:19,807 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:26:19,807 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:26:19,982 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:26:19,982 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 17:26:19,984 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:26:19 BoogieIcfgContainer [2024-01-31 17:26:19,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:26:19,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:26:19,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:26:19,988 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:26:19,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:26:18" (1/4) ... [2024-01-31 17:26:19,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74181587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:26:19, skipping insertion in model container [2024-01-31 17:26:19,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:26:18" (2/4) ... [2024-01-31 17:26:19,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74181587 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:26:19, skipping insertion in model container [2024-01-31 17:26:19,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:26:19" (3/4) ... [2024-01-31 17:26:19,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74181587 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:26:19, skipping insertion in model container [2024-01-31 17:26:19,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:26:19" (4/4) ... [2024-01-31 17:26:19,992 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-01-31 17:26:20,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:26:20,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:26:20,005 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:26:20,047 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 17:26:20,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 94 flow [2024-01-31 17:26:20,114 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-01-31 17:26:20,115 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:26:20,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 6/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2024-01-31 17:26:20,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 94 flow [2024-01-31 17:26:20,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 80 flow [2024-01-31 17:26:20,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:26:20,141 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;@6d2a5ee5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:26:20,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 17:26:20,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:26:20,155 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-01-31 17:26:20,155 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:26:20,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:26:20,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:26:20,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:26:20,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:26:20,161 INFO L85 PathProgramCache]: Analyzing trace with hash 944210106, now seen corresponding path program 1 times [2024-01-31 17:26:20,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:26:20,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957742860] [2024-01-31 17:26:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:26:20,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:26:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:26:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:26:20,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:26:20,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957742860] [2024-01-31 17:26:20,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957742860] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:26:20,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:26:20,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:26:20,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232475554] [2024-01-31 17:26:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:26:20,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:26:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:26:20,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:26:20,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:26:20,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-01-31 17:26:20,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:20,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:26:20,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-01-31 17:26:20,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:26:20,668 INFO L124 PetriNetUnfolderBase]: 430/783 cut-off events. [2024-01-31 17:26:20,668 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-01-31 17:26:20,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 783 events. 430/783 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3541 event pairs, 167 based on Foata normal form. 18/788 useless extension candidates. Maximal degree in co-relation 1336. Up to 412 conditions per place. [2024-01-31 17:26:20,677 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 39 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-01-31 17:26:20,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 199 flow [2024-01-31 17:26:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:26:20,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:26:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-01-31 17:26:20,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-01-31 17:26:20,688 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 80 flow. Second operand 3 states and 84 transitions. [2024-01-31 17:26:20,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 199 flow [2024-01-31 17:26:20,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 189 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:26:20,694 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 84 flow [2024-01-31 17:26:20,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-01-31 17:26:20,699 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-01-31 17:26:20,700 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 84 flow [2024-01-31 17:26:20,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:20,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:26:20,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:26:20,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:26:20,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:26:20,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:26:20,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1931119106, now seen corresponding path program 1 times [2024-01-31 17:26:20,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:26:20,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601675026] [2024-01-31 17:26:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:26:20,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:26:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:26:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:26:20,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:26:20,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601675026] [2024-01-31 17:26:20,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601675026] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:26:20,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:26:20,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:26:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840560735] [2024-01-31 17:26:20,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:26:20,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:26:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:26:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:26:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:26:20,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-01-31 17:26:20,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:20,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:26:20,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-01-31 17:26:20,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:26:20,946 INFO L124 PetriNetUnfolderBase]: 784/1373 cut-off events. [2024-01-31 17:26:20,946 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-01-31 17:26:20,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 1373 events. 784/1373 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6721 event pairs, 363 based on Foata normal form. 26/1387 useless extension candidates. Maximal degree in co-relation 969. Up to 744 conditions per place. [2024-01-31 17:26:20,954 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 41 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-01-31 17:26:20,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 217 flow [2024-01-31 17:26:20,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:26:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:26:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-01-31 17:26:20,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-01-31 17:26:20,957 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 84 flow. Second operand 3 states and 84 transitions. [2024-01-31 17:26:20,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 217 flow [2024-01-31 17:26:20,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:26:20,960 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 94 flow [2024-01-31 17:26:20,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-01-31 17:26:20,961 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-01-31 17:26:20,961 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 94 flow [2024-01-31 17:26:20,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:20,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:26:20,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:26:20,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:26:20,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:26:20,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:26:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2007435854, now seen corresponding path program 1 times [2024-01-31 17:26:20,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:26:20,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077088501] [2024-01-31 17:26:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:26:20,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:26:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:26:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:26:21,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:26:21,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077088501] [2024-01-31 17:26:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077088501] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:26:21,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:26:21,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:26:21,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065226931] [2024-01-31 17:26:21,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:26:21,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:26:21,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:26:21,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:26:21,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:26:21,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-01-31 17:26:21,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:21,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:26:21,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-01-31 17:26:21,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:26:21,229 INFO L124 PetriNetUnfolderBase]: 441/931 cut-off events. [2024-01-31 17:26:21,229 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-01-31 17:26:21,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 931 events. 441/931 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4524 event pairs, 189 based on Foata normal form. 64/994 useless extension candidates. Maximal degree in co-relation 600. Up to 388 conditions per place. [2024-01-31 17:26:21,233 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 31 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-01-31 17:26:21,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 218 flow [2024-01-31 17:26:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:26:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:26:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-01-31 17:26:21,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-01-31 17:26:21,236 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-01-31 17:26:21,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 218 flow [2024-01-31 17:26:21,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 49 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:26:21,239 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 108 flow [2024-01-31 17:26:21,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2024-01-31 17:26:21,240 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-01-31 17:26:21,240 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 108 flow [2024-01-31 17:26:21,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:21,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:26:21,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:26:21,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:26:21,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:26:21,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:26:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1290759006, now seen corresponding path program 2 times [2024-01-31 17:26:21,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:26:21,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401639373] [2024-01-31 17:26:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:26:21,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:26:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:26:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:26:21,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:26:21,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401639373] [2024-01-31 17:26:21,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401639373] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:26:21,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964101854] [2024-01-31 17:26:21,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:26:21,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:26:21,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:26:21,348 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) [2024-01-31 17:26:21,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:26:21,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:26:21,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:26:21,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 17:26:21,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:26:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:26:21,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:26:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:26:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964101854] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:26:21,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:26:21,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-01-31 17:26:21,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274858131] [2024-01-31 17:26:21,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:26:21,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:26:21,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:26:21,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:26:21,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:26:21,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-01-31 17:26:21,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 108 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:21,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:26:21,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-01-31 17:26:21,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:26:21,997 INFO L124 PetriNetUnfolderBase]: 1447/2820 cut-off events. [2024-01-31 17:26:21,998 INFO L125 PetriNetUnfolderBase]: For 895/895 co-relation queries the response was YES. [2024-01-31 17:26:22,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6667 conditions, 2820 events. 1447/2820 cut-off events. For 895/895 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15366 event pairs, 79 based on Foata normal form. 184/2996 useless extension candidates. Maximal degree in co-relation 1693. Up to 484 conditions per place. [2024-01-31 17:26:22,010 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 194 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2024-01-31 17:26:22,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 236 transitions, 1238 flow [2024-01-31 17:26:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 17:26:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 17:26:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 449 transitions. [2024-01-31 17:26:22,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7015625 [2024-01-31 17:26:22,012 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 108 flow. Second operand 16 states and 449 transitions. [2024-01-31 17:26:22,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 236 transitions, 1238 flow [2024-01-31 17:26:22,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 236 transitions, 1130 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:26:22,017 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 374 flow [2024-01-31 17:26:22,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=374, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-01-31 17:26:22,018 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2024-01-31 17:26:22,018 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 374 flow [2024-01-31 17:26:22,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:22,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:26:22,018 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:26:22,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 17:26:22,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:26:22,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:26:22,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:26:22,233 INFO L85 PathProgramCache]: Analyzing trace with hash 12954318, now seen corresponding path program 3 times [2024-01-31 17:26:22,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:26:22,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051212772] [2024-01-31 17:26:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:26:22,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:26:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:26:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-01-31 17:26:22,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:26:22,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051212772] [2024-01-31 17:26:22,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051212772] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:26:22,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6161760] [2024-01-31 17:26:22,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:26:22,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:26:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:26:22,316 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) [2024-01-31 17:26:22,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:26:22,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:26:22,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:26:22,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 17:26:22,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:26:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-01-31 17:26:22,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:26:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6161760] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:26:22,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:26:22,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-01-31 17:26:22,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367504654] [2024-01-31 17:26:22,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:26:22,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:26:22,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:26:22,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:26:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:26:22,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-01-31 17:26:22,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:22,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:26:22,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-01-31 17:26:22,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:26:22,772 INFO L124 PetriNetUnfolderBase]: 1526/3098 cut-off events. [2024-01-31 17:26:22,772 INFO L125 PetriNetUnfolderBase]: For 7866/7866 co-relation queries the response was YES. [2024-01-31 17:26:22,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9432 conditions, 3098 events. 1526/3098 cut-off events. For 7866/7866 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 17812 event pairs, 384 based on Foata normal form. 0/2925 useless extension candidates. Maximal degree in co-relation 7394. Up to 1405 conditions per place. [2024-01-31 17:26:22,791 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 86 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2024-01-31 17:26:22,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 807 flow [2024-01-31 17:26:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:26:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:26:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-01-31 17:26:22,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58125 [2024-01-31 17:26:22,792 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 374 flow. Second operand 4 states and 93 transitions. [2024-01-31 17:26:22,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 807 flow [2024-01-31 17:26:22,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 728 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-01-31 17:26:22,809 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 355 flow [2024-01-31 17:26:22,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=355, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-01-31 17:26:22,810 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-01-31 17:26:22,810 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 355 flow [2024-01-31 17:26:22,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:22,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:26:22,810 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:26:22,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:26:23,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:26:23,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:26:23,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:26:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash -731456480, now seen corresponding path program 4 times [2024-01-31 17:26:23,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:26:23,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764122430] [2024-01-31 17:26:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:26:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:26:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:26:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-01-31 17:26:23,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:26:23,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764122430] [2024-01-31 17:26:23,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764122430] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:26:23,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:26:23,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:26:23,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131297434] [2024-01-31 17:26:23,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:26:23,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:26:23,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:26:23,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:26:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:26:23,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-01-31 17:26:23,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:23,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:26:23,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-01-31 17:26:23,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:26:23,288 INFO L124 PetriNetUnfolderBase]: 1057/2193 cut-off events. [2024-01-31 17:26:23,288 INFO L125 PetriNetUnfolderBase]: For 6267/6267 co-relation queries the response was YES. [2024-01-31 17:26:23,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 2193 events. 1057/2193 cut-off events. For 6267/6267 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11911 event pairs, 285 based on Foata normal form. 0/2099 useless extension candidates. Maximal degree in co-relation 5982. Up to 1500 conditions per place. [2024-01-31 17:26:23,301 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 65 selfloop transitions, 3 changer transitions 3/82 dead transitions. [2024-01-31 17:26:23,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 82 transitions, 577 flow [2024-01-31 17:26:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:26:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:26:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-31 17:26:23,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-01-31 17:26:23,302 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 355 flow. Second operand 3 states and 78 transitions. [2024-01-31 17:26:23,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 82 transitions, 577 flow [2024-01-31 17:26:23,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:26:23,312 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 363 flow [2024-01-31 17:26:23,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2024-01-31 17:26:23,314 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-01-31 17:26:23,315 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 363 flow [2024-01-31 17:26:23,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:23,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:26:23,315 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:26:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:26:23,315 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:26:23,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:26:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash -298184354, now seen corresponding path program 5 times [2024-01-31 17:26:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:26:23,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826408999] [2024-01-31 17:26:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:26:23,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:26:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:26:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-01-31 17:26:23,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:26:23,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826408999] [2024-01-31 17:26:23,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826408999] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:26:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689635673] [2024-01-31 17:26:23,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:26:23,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:26:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:26:23,404 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) [2024-01-31 17:26:23,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:26:23,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-01-31 17:26:23,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:26:23,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-31 17:26:23,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:26:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-01-31 17:26:23,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:26:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-01-31 17:26:23,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689635673] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:26:23,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:26:23,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-01-31 17:26:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256349258] [2024-01-31 17:26:23,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:26:23,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:26:23,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:26:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:26:23,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:26:23,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-01-31 17:26:23,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 363 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:23,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:26:23,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-01-31 17:26:23,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:26:23,965 INFO L124 PetriNetUnfolderBase]: 1355/2819 cut-off events. [2024-01-31 17:26:23,965 INFO L125 PetriNetUnfolderBase]: For 9122/9134 co-relation queries the response was YES. [2024-01-31 17:26:23,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8995 conditions, 2819 events. 1355/2819 cut-off events. For 9122/9134 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15127 event pairs, 183 based on Foata normal form. 128/2931 useless extension candidates. Maximal degree in co-relation 6985. Up to 714 conditions per place. [2024-01-31 17:26:23,981 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 96 selfloop transitions, 15 changer transitions 1/126 dead transitions. [2024-01-31 17:26:23,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 126 transitions, 917 flow [2024-01-31 17:26:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:26:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:26:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-01-31 17:26:23,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-01-31 17:26:23,982 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 363 flow. Second operand 6 states and 163 transitions. [2024-01-31 17:26:23,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 126 transitions, 917 flow [2024-01-31 17:26:23,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 126 transitions, 903 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 17:26:23,995 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 420 flow [2024-01-31 17:26:23,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=420, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-01-31 17:26:23,996 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-01-31 17:26:23,996 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 420 flow [2024-01-31 17:26:23,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:23,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:26:23,997 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-01-31 17:26:24,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:26:24,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:26:24,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:26:24,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:26:24,209 INFO L85 PathProgramCache]: Analyzing trace with hash 578621360, now seen corresponding path program 6 times [2024-01-31 17:26:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:26:24,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68420706] [2024-01-31 17:26:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:26:24,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:26:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:26:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:26:24,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:26:24,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68420706] [2024-01-31 17:26:24,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68420706] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:26:24,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127783342] [2024-01-31 17:26:24,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:26:24,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:26:24,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:26:24,665 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) [2024-01-31 17:26:24,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:26:24,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-01-31 17:26:24,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:26:24,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 23 conjunts are in the unsatisfiable core [2024-01-31 17:26:24,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:26:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:26:25,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:26:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:26:25,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127783342] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:26:25,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:26:25,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2024-01-31 17:26:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534572080] [2024-01-31 17:26:25,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:26:25,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-01-31 17:26:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:26:25,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-01-31 17:26:25,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-01-31 17:26:25,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-31 17:26:25,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 420 flow. Second operand has 31 states, 31 states have (on average 15.129032258064516) internal successors, (469), 31 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:25,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:26:25,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-31 17:26:25,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:26:26,394 INFO L124 PetriNetUnfolderBase]: 1263/2608 cut-off events. [2024-01-31 17:26:26,394 INFO L125 PetriNetUnfolderBase]: For 9003/9019 co-relation queries the response was YES. [2024-01-31 17:26:26,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8953 conditions, 2608 events. 1263/2608 cut-off events. For 9003/9019 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14194 event pairs, 81 based on Foata normal form. 76/2680 useless extension candidates. Maximal degree in co-relation 7455. Up to 549 conditions per place. [2024-01-31 17:26:26,403 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 0 selfloop transitions, 0 changer transitions 170/170 dead transitions. [2024-01-31 17:26:26,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 170 transitions, 1383 flow [2024-01-31 17:26:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:26:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:26:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 256 transitions. [2024-01-31 17:26:26,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-31 17:26:26,405 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 420 flow. Second operand 12 states and 256 transitions. [2024-01-31 17:26:26,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 170 transitions, 1383 flow [2024-01-31 17:26:26,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 170 transitions, 1304 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-01-31 17:26:26,418 INFO L231 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2024-01-31 17:26:26,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2024-01-31 17:26:26,419 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2024-01-31 17:26:26,419 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2024-01-31 17:26:26,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.129032258064516) internal successors, (469), 31 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:26:26,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-01-31 17:26:26,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-01-31 17:26:26,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-01-31 17:26:26,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:26:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:26:26,628 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2024-01-31 17:26:26,631 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 17:26:26,631 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 17:26:26,634 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 05:26:26 BasicIcfg [2024-01-31 17:26:26,634 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 17:26:26,635 INFO L158 Benchmark]: Toolchain (without parser) took 7922.77ms. Allocated memory was 159.4MB in the beginning and 417.3MB in the end (delta: 257.9MB). Free memory was 94.6MB in the beginning and 220.5MB in the end (delta: -125.9MB). Peak memory consumption was 161.7MB. Max. memory is 16.1GB. [2024-01-31 17:26:26,635 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 159.4MB. Free memory was 120.7MB in the beginning and 120.6MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:26:26,635 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:26:26,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.16ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 94.4MB in the beginning and 194.2MB in the end (delta: -99.8MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2024-01-31 17:26:26,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.20ms. Allocated memory is still 232.8MB. Free memory was 194.2MB in the beginning and 192.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:26:26,636 INFO L158 Benchmark]: Boogie Preprocessor took 77.59ms. Allocated memory is still 232.8MB. Free memory was 192.1MB in the beginning and 188.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 17:26:26,636 INFO L158 Benchmark]: RCFGBuilder took 562.02ms. Allocated memory is still 232.8MB. Free memory was 188.9MB in the beginning and 140.7MB in the end (delta: 48.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-01-31 17:26:26,636 INFO L158 Benchmark]: TraceAbstraction took 6648.57ms. Allocated memory was 232.8MB in the beginning and 417.3MB in the end (delta: 184.5MB). Free memory was 140.7MB in the beginning and 220.5MB in the end (delta: -79.8MB). Peak memory consumption was 132.6MB. Max. memory is 16.1GB. [2024-01-31 17:26:26,637 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 159.4MB. Free memory was 120.7MB in the beginning and 120.6MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 560.16ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 94.4MB in the beginning and 194.2MB in the end (delta: -99.8MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.20ms. Allocated memory is still 232.8MB. Free memory was 194.2MB in the beginning and 192.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.59ms. Allocated memory is still 232.8MB. Free memory was 192.1MB in the beginning and 188.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 562.02ms. Allocated memory is still 232.8MB. Free memory was 188.9MB in the beginning and 140.7MB in the end (delta: 48.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6648.57ms. Allocated memory was 232.8MB in the beginning and 417.3MB in the end (delta: 184.5MB). Free memory was 140.7MB in the beginning and 220.5MB in the end (delta: -79.8MB). Peak memory consumption was 132.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 57 locations, 3 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: 6.6s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 517 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 507 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2837 IncrementalHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 1 mSDtfsCounter, 2837 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=420occurred in iteration=7, InterpolantAutomatonStates: 50, 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, 1.8s InterpolantComputationTime, 510 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 639 ConstructedInterpolants, 0 QuantifiedInterpolants, 2473 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1318 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 265/537 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 17:26:26,658 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