./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5f3baf3278e480ee3252cf956e13d227a7b17ef9bf91a877ae670efdcd2b9fd2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:13:46,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:13:46,329 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:13:46,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:13:46,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:13:46,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:13:46,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:13:46,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:13:46,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:13:46,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:13:46,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:13:46,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:13:46,390 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:13:46,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:13:46,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:13:46,393 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:13:46,393 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:13:46,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:13:46,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:13:46,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:13:46,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:13:46,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:13:46,396 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:13:46,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:13:46,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:13:46,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:13:46,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:13:46,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:13:46,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:46,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:13:46,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:13:46,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:13:46,403 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:13:46,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:13:46,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:13:46,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:13:46,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:13:46,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:13:46,405 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:13:46,405 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f3baf3278e480ee3252cf956e13d227a7b17ef9bf91a877ae670efdcd2b9fd2 [2023-11-06 22:13:46,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:13:46,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:13:46,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:13:46,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:13:46,838 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:13:46,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem07_label08.c [2023-11-06 22:13:50,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:13:52,822 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:13:52,822 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/sv-benchmarks/c/eca-rers2012/Problem07_label08.c [2023-11-06 22:13:52,998 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/data/9ecca35cc/a695ac12bf6440a394376db0ed3273c7/FLAGe4cb837a3 [2023-11-06 22:13:53,021 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/data/9ecca35cc/a695ac12bf6440a394376db0ed3273c7 [2023-11-06 22:13:53,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:13:53,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:13:53,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:53,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:13:53,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:13:53,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:53" (1/1) ... [2023-11-06 22:13:53,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ef513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:53, skipping insertion in model container [2023-11-06 22:13:53,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:53" (1/1) ... [2023-11-06 22:13:54,223 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:14:07,275 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/sv-benchmarks/c/eca-rers2012/Problem07_label08.c[2772053,2772066] [2023-11-06 22:14:07,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:07,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:14:15,660 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/sv-benchmarks/c/eca-rers2012/Problem07_label08.c[2772053,2772066] [2023-11-06 22:14:15,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:16,833 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:14:16,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16 WrapperNode [2023-11-06 22:14:16,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:16,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:16,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:14:16,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:14:16,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:17,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:20,809 INFO L138 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83774 [2023-11-06 22:14:20,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:20,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:14:20,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:14:20,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:14:20,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:20,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:21,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:21,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:23,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:23,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:23,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:23,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:24,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:14:24,137 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:14:24,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:14:24,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:14:24,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (1/1) ... [2023-11-06 22:14:24,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:24,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:24,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:14:24,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922818e3-72e9-40fc-beea-2eafd8fcbca7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:14:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:14:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:14:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:14:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:14:24,396 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:14:24,399 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:15:20,527 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:15:20,601 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:15:20,601 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:15:20,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:20 BoogieIcfgContainer [2023-11-06 22:15:20,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:15:20,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:15:20,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:15:20,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:15:20,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:53" (1/3) ... [2023-11-06 22:15:20,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3b889f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:20, skipping insertion in model container [2023-11-06 22:15:20,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:16" (2/3) ... [2023-11-06 22:15:20,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3b889f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:20, skipping insertion in model container [2023-11-06 22:15:20,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:20" (3/3) ... [2023-11-06 22:15:20,623 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem07_label08.c [2023-11-06 22:15:20,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:15:20,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:15:20,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:15:20,911 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@78a04a96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:15:20,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:15:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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) [2023-11-06 22:15:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10118 [2023-11-06 22:15:21,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:21,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:21,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:21,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:21,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2015113497, now seen corresponding path program 1 times [2023-11-06 22:15:21,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:21,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427891994] [2023-11-06 22:15:21,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:21,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:02,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:02,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427891994] [2023-11-06 22:16:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427891994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:02,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:02,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:16:02,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487548731] [2023-11-06 22:16:02,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:02,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:16:02,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:02,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:16:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:02,389 INFO L87 Difference]: Start difference. First operand has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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) Second operand has 3 states, 3 states have (on average 3372.3333333333335) internal successors, (10117), 2 states have internal predecessors, (10117), 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) [2023-11-06 22:16:53,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:53,662 INFO L93 Difference]: Finished difference Result 30705 states and 61134 transitions. [2023-11-06 22:16:53,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:16:53,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3372.3333333333335) internal successors, (10117), 2 states have internal predecessors, (10117), 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) Word has length 10117 [2023-11-06 22:16:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:53,851 INFO L225 Difference]: With dead ends: 30705 [2023-11-06 22:16:53,851 INFO L226 Difference]: Without dead ends: 20384 [2023-11-06 22:16:53,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:53,879 INFO L413 NwaCegarLoop]: 4082 mSDtfsCounter, 471 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31005 mSolverCounterSat, 12527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 43532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12527 IncrementalHoareTripleChecker+Valid, 31005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:53,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 4135 Invalid, 43532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12527 Valid, 31005 Invalid, 0 Unknown, 0 Unchecked, 50.0s Time] [2023-11-06 22:16:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20384 states. [2023-11-06 22:16:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384. [2023-11-06 22:16:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20384 states, 20383 states have (on average 1.7945346612373057) internal successors, (36578), 20383 states have internal predecessors, (36578), 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) [2023-11-06 22:16:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36578 transitions. [2023-11-06 22:16:54,620 INFO L78 Accepts]: Start accepts. Automaton has 20384 states and 36578 transitions. Word has length 10117 [2023-11-06 22:16:54,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:54,642 INFO L495 AbstractCegarLoop]: Abstraction has 20384 states and 36578 transitions. [2023-11-06 22:16:54,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3372.3333333333335) internal successors, (10117), 2 states have internal predecessors, (10117), 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) [2023-11-06 22:16:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 20384 states and 36578 transitions. [2023-11-06 22:16:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10122 [2023-11-06 22:16:55,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:55,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:55,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:16:55,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:55,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash 982250481, now seen corresponding path program 1 times [2023-11-06 22:16:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:55,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588762401] [2023-11-06 22:16:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:55,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat