./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-09-02_08-21-23.files/mutex-meet-local/popl20-more-nonblocking-counter-alt2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a4c57e3 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c ./goblint.2024-09-02_08-21-23.files/mutex-meet-local/popl20-more-nonblocking-counter-alt2.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-4a4c57e-m [2024-09-08 15:26:12,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-08 15:26:13,004 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-09-08 15:26:13,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-08 15:26:13,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-08 15:26:13,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-08 15:26:13,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-08 15:26:13,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-08 15:26:13,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-08 15:26:13,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-08 15:26:13,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-08 15:26:13,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-08 15:26:13,058 INFO L153 SettingsManager]: * Use SBE=true [2024-09-08 15:26:13,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-08 15:26:13,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-08 15:26:13,062 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-08 15:26:13,062 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-08 15:26:13,063 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-08 15:26:13,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-08 15:26:13,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-08 15:26:13,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-08 15:26:13,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-08 15:26:13,064 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-08 15:26:13,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-08 15:26:13,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-08 15:26:13,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-08 15:26:13,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-08 15:26:13,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-08 15:26:13,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-08 15:26:13,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-08 15:26:13,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 15:26:13,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-08 15:26:13,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-08 15:26:13,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-08 15:26:13,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-08 15:26:13,067 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-09-08 15:26:13,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-08 15:26:13,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-08 15:26:13,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-09-08 15:26:13,069 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-09-08 15:26:13,070 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-09-08 15:26:13,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-09-08 15:26:13,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-08 15:26:13,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-08 15:26:13,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-08 15:26:13,343 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-08 15:26:13,344 INFO L274 PluginConnector]: CDTParser initialized [2024-09-08 15:26:13,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-09-08 15:26:14,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-08 15:26:14,936 INFO L384 CDTParser]: Found 1 translation units. [2024-09-08 15:26:14,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-09-08 15:26:14,946 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/0a32b3b55/405d369d2d3e41cf90495af02d4c003c/FLAGcff593182 [2024-09-08 15:26:14,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/0a32b3b55/405d369d2d3e41cf90495af02d4c003c [2024-09-08 15:26:14,965 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-08 15:26:14,965 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-08 15:26:14,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-09-02_08-21-23.files/mutex-meet-local/popl20-more-nonblocking-counter-alt2.wvr.yml/witness.yml [2024-09-08 15:26:15,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-08 15:26:15,029 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-08 15:26:15,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-08 15:26:15,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-08 15:26:15,036 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-08 15:26:15,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 03:26:14" (1/2) ... [2024-09-08 15:26:15,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169ae0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:15, skipping insertion in model container [2024-09-08 15:26:15,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 03:26:14" (1/2) ... [2024-09-08 15:26:15,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43b37e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 03:26:15, skipping insertion in model container [2024-09-08 15:26:15,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 08.09 03:26:15" (2/2) ... [2024-09-08 15:26:15,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169ae0a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15, skipping insertion in model container [2024-09-08 15:26:15,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 08.09 03:26:15" (2/2) ... [2024-09-08 15:26:15,053 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-08 15:26:15,053 INFO L1541 ArrayList]: Location invariant before [L54-L57] ((1U <= M) && ((-1LL + (long long )C) + (long long )M >= 0LL)) && ((4294967294LL - (long long )C) + (long long )M >= 0LL) [2024-09-08 15:26:15,053 INFO L1541 ArrayList]: Location invariant before [L43-L43] ((1U <= M) && ((-1LL + (long long )C) + (long long )M >= 0LL)) && ((4294967294LL - (long long )C) + (long long )M >= 0LL) [2024-09-08 15:26:15,071 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-08 15:26:15,254 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2024-09-08 15:26:15,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 15:26:15,266 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-09-08 15:26:15,307 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2024-09-08 15:26:15,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 15:26:15,321 INFO L204 MainTranslator]: Completed translation [2024-09-08 15:26:15,321 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15 WrapperNode [2024-09-08 15:26:15,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-08 15:26:15,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-08 15:26:15,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-08 15:26:15,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-08 15:26:15,329 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 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,335 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 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,352 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2024-09-08 15:26:15,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-08 15:26:15,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-08 15:26:15,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-08 15:26:15,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-08 15:26:15,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,363 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-08 15:26:15,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-08 15:26:15,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-08 15:26:15,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-08 15:26:15,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (1/1) ... [2024-09-08 15:26:15,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 15:26:15,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 15:26:15,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-09-08 15:26:15,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-09-08 15:26:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-08 15:26:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-09-08 15:26:15,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-09-08 15:26:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-09-08 15:26:15,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-09-08 15:26:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-08 15:26:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-09-08 15:26:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-09-08 15:26:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-08 15:26:15,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-08 15:26:15,456 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-09-08 15:26:15,530 INFO L242 CfgBuilder]: Building ICFG [2024-09-08 15:26:15,531 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-08 15:26:15,676 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-09-08 15:26:15,676 INFO L291 CfgBuilder]: Performing block encoding [2024-09-08 15:26:15,803 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-08 15:26:15,804 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-08 15:26:15,804 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 03:26:15 BoogieIcfgContainer [2024-09-08 15:26:15,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-08 15:26:15,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-08 15:26:15,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-08 15:26:15,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-08 15:26:15,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 03:26:14" (1/4) ... [2024-09-08 15:26:15,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bc6f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 03:26:15, skipping insertion in model container [2024-09-08 15:26:15,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 08.09 03:26:15" (2/4) ... [2024-09-08 15:26:15,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bc6f9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 08.09 03:26:15, skipping insertion in model container [2024-09-08 15:26:15,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 03:26:15" (3/4) ... [2024-09-08 15:26:15,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bc6f9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 08.09 03:26:15, skipping insertion in model container [2024-09-08 15:26:15,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 03:26:15" (4/4) ... [2024-09-08 15:26:15,814 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2024-09-08 15:26:15,830 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-08 15:26:15,830 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-08 15:26:15,830 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-09-08 15:26:15,876 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-09-08 15:26:15,911 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 15:26:15,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 15:26:15,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 15:26:15,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 15:26:15,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-09-08 15:26:15,942 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 15:26:15,959 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread2Thread1of1ForFork0 ======== [2024-09-08 15:26:15,967 INFO L336 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2d47c1f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 15:26:15,968 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 15:26:16,076 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 15:26:16,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 15:26:16,087 INFO L85 PathProgramCache]: Analyzing trace with hash 981461810, now seen corresponding path program 1 times [2024-09-08 15:26:16,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 15:26:16,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488637241] [2024-09-08 15:26:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 15:26:16,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 15:26:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 15:26:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 15:26:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 15:26:16,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488637241] [2024-09-08 15:26:16,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488637241] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 15:26:16,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 15:26:16,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 15:26:16,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860930327] [2024-09-08 15:26:16,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 15:26:16,426 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 15:26:16,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 15:26:16,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 15:26:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 15:26:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:16,453 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 15:26:16,454 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-09-08 15:26:16,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 15:26:16,617 INFO L785 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 1 remaining) [2024-09-08 15:26:16,619 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-08 15:26:16,626 INFO L408 BasicCegarLoop]: Path program histogram: [1] [2024-09-08 15:26:16,628 INFO L312 ceAbstractionStarter]: Result for error location thread2Thread1of1ForFork0 was SAFE (1/3) [2024-09-08 15:26:16,631 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 15:26:16,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 15:26:16,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 15:26:16,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 15:26:16,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2024-09-08 15:26:16,636 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 15:26:16,637 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread1Thread1of1ForFork1 ======== [2024-09-08 15:26:16,638 INFO L336 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2d47c1f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 15:26:16,638 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 15:26:16,691 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 15:26:16,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 15:26:16,692 INFO L85 PathProgramCache]: Analyzing trace with hash 684819408, now seen corresponding path program 1 times [2024-09-08 15:26:16,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 15:26:16,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812746074] [2024-09-08 15:26:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 15:26:16,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 15:26:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 15:26:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 15:26:16,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 15:26:16,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812746074] [2024-09-08 15:26:16,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812746074] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 15:26:16,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 15:26:16,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-08 15:26:16,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802584154] [2024-09-08 15:26:16,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 15:26:16,821 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 15:26:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 15:26:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 15:26:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 15:26:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:16,822 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 15:26:16,822 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-09-08 15:26:16,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 15:26:16,909 INFO L785 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 1 remaining) [2024-09-08 15:26:16,910 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-08 15:26:16,912 INFO L408 BasicCegarLoop]: Path program histogram: [1] [2024-09-08 15:26:16,915 INFO L312 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork1 was SAFE (2/3) [2024-09-08 15:26:16,917 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 15:26:16,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 15:26:16,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 15:26:16,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 15:26:16,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2024-09-08 15:26:16,927 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 15:26:16,928 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-08 15:26:16,929 INFO L336 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2d47c1f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 15:26:16,932 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-08 15:26:16,994 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 15:26:16,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 15:26:16,995 INFO L85 PathProgramCache]: Analyzing trace with hash -576755428, now seen corresponding path program 1 times [2024-09-08 15:26:16,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 15:26:16,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953886431] [2024-09-08 15:26:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 15:26:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 15:26:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 15:26:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 15:26:17,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 15:26:17,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953886431] [2024-09-08 15:26:17,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953886431] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 15:26:17,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 15:26:17,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 15:26:17,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811573485] [2024-09-08 15:26:17,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 15:26:17,132 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-08 15:26:17,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 15:26:17,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-08 15:26:17,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-08 15:26:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:17,134 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 15:26:17,134 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-09-08 15:26:17,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 15:26:17,216 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-08 15:26:17,216 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 15:26:17,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 15:26:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1463444959, now seen corresponding path program 1 times [2024-09-08 15:26:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 15:26:17,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650988921] [2024-09-08 15:26:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 15:26:17,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 15:26:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 15:26:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 15:26:17,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 15:26:17,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650988921] [2024-09-08 15:26:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650988921] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 15:26:17,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741636978] [2024-09-08 15:26:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 15:26:17,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 15:26:17,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 15:26:17,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 15:26:17,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-08 15:26:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 15:26:17,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-08 15:26:17,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 15:26:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 15:26:17,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 15:26:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 15:26:18,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741636978] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 15:26:18,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 15:26:18,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-09-08 15:26:18,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209624351] [2024-09-08 15:26:18,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 15:26:18,486 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-08 15:26:18,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 15:26:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-08 15:26:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-09-08 15:26:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:18,490 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 15:26:18,490 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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) [2024-09-08 15:26:18,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 15:26:18,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:20,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 15:26:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-08 15:26:20,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-08 15:26:21,011 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 15:26:21,012 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 15:26:21,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 15:26:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1797394431, now seen corresponding path program 2 times [2024-09-08 15:26:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 15:26:21,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675687187] [2024-09-08 15:26:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 15:26:21,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 15:26:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 15:26:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 15:26:22,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 15:26:22,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675687187] [2024-09-08 15:26:22,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675687187] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 15:26:22,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121549639] [2024-09-08 15:26:22,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-08 15:26:22,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 15:26:22,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 15:26:22,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 15:26:22,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-08 15:26:22,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-08 15:26:22,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-08 15:26:22,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-08 15:26:22,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 15:26:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 15:26:23,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 15:26:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 15:26:42,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121549639] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 15:26:42,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 15:26:42,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 17] total 40 [2024-09-08 15:26:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561414128] [2024-09-08 15:26:42,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 15:26:42,546 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-08 15:26:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 15:26:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-08 15:26:42,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1222, Unknown=1, NotChecked=0, Total=1560 [2024-09-08 15:26:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:42,549 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 15:26:42,549 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.0) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 15:26:42,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 15:26:42,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-09-08 15:26:42,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 15:26:49,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:27:15,541 WARN L293 SmtUtils]: Spent 26.15s on a formula simplification. DAG size of input: 129 DAG size of output: 93 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:27:17,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:27:34,618 WARN L293 SmtUtils]: Spent 13.65s on a formula simplification. DAG size of input: 76 DAG size of output: 76 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:28:01,600 WARN L293 SmtUtils]: Spent 18.62s on a formula simplification. DAG size of input: 134 DAG size of output: 44 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:28:14,637 WARN L293 SmtUtils]: Spent 12.32s on a formula simplification. DAG size of input: 138 DAG size of output: 48 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:28:29,820 WARN L293 SmtUtils]: Spent 14.00s on a formula simplification. DAG size of input: 144 DAG size of output: 59 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:28:31,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:28:33,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:28:35,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:28:37,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:29:09,264 WARN L293 SmtUtils]: Spent 31.12s on a formula simplification. DAG size of input: 114 DAG size of output: 81 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:29:11,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:29:13,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:31:37,139 WARN L293 SmtUtils]: Spent 2.23m on a formula simplification. DAG size of input: 148 DAG size of output: 90 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:31:52,800 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 50 DAG size of output: 15 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:31:54,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:31:56,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:31:58,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-09-08 15:32:47,706 WARN L293 SmtUtils]: Spent 38.02s on a formula simplification. DAG size of input: 135 DAG size of output: 81 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:32:55,673 WARN L293 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 57 DAG size of output: 44 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:33:14,954 WARN L293 SmtUtils]: Spent 17.03s on a formula simplification. DAG size of input: 109 DAG size of output: 84 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:33:17,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:33:56,262 WARN L293 SmtUtils]: Spent 30.94s on a formula simplification. DAG size of input: 134 DAG size of output: 60 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:33:58,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:00,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:04,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:07,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:09,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:19,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:21,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:23,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:25,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:27,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:53,935 WARN L293 SmtUtils]: Spent 25.80s on a formula simplification. DAG size of input: 83 DAG size of output: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-08 15:34:55,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:57,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:59,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-08 15:34:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 15:34:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-08 15:34:59,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-08 15:34:59,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-08 15:34:59,822 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 15:34:59,822 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 15:34:59,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 15:34:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash 316027103, now seen corresponding path program 3 times [2024-09-08 15:34:59,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 15:34:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408086663] [2024-09-08 15:34:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 15:34:59,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 15:35:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15