./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/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_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/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_97a23574-8647-4976-978f-40f83fbcbd58/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 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:07:18,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:07:18,784 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:07:18,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:07:18,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:07:18,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:07:18,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:07:18,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:07:18,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:07:18,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:07:18,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:07:18,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:07:18,847 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:07:18,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:07:18,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:07:18,849 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:07:18,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:07:18,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:07:18,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:07:18,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:07:18,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:07:18,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:07:18,852 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:07:18,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:07:18,853 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:07:18,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:07:18,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:07:18,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:07:18,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:18,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:07:18,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:07:18,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:07:18,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:07:18,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:07:18,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:07:18,858 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:07:18,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:07:18,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:07:18,858 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:07:18,859 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_97a23574-8647-4976-978f-40f83fbcbd58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef [2023-11-06 22:07:19,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:07:19,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:07:19,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:07:19,207 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:07:19,208 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:07:19,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/float-benchs/filter1.c [2023-11-06 22:07:22,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:07:22,682 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:07:22,683 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/sv-benchmarks/c/float-benchs/filter1.c [2023-11-06 22:07:22,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/data/de8ea9d29/062599fbba0a4a69958fdfb638dd5cc8/FLAGb55b8dbc6 [2023-11-06 22:07:22,717 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/data/de8ea9d29/062599fbba0a4a69958fdfb638dd5cc8 [2023-11-06 22:07:22,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:07:22,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:07:22,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:22,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:07:22,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:07:22,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:22,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a6ba3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22, skipping insertion in model container [2023-11-06 22:07:22,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:22,766 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:07:22,935 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_97a23574-8647-4976-978f-40f83fbcbd58/sv-benchmarks/c/float-benchs/filter1.c[627,640] [2023-11-06 22:07:22,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:22,959 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:07:22,972 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_97a23574-8647-4976-978f-40f83fbcbd58/sv-benchmarks/c/float-benchs/filter1.c[627,640] [2023-11-06 22:07:22,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:22,992 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:07:22,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22 WrapperNode [2023-11-06 22:07:22,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:22,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:22,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:07:22,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:07:23,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,029 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2023-11-06 22:07:23,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:23,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:07:23,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:07:23,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:07:23,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:07:23,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:07:23,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:07:23,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:07:23,066 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (1/1) ... [2023-11-06 22:07:23,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:23,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:23,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:23,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:07:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:07:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:07:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:07:23,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:07:23,222 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:07:23,225 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:07:23,357 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:07:23,363 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:07:23,363 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:07:23,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:23 BoogieIcfgContainer [2023-11-06 22:07:23,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:07:23,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:07:23,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:07:23,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:07:23,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:07:22" (1/3) ... [2023-11-06 22:07:23,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf5114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:23, skipping insertion in model container [2023-11-06 22:07:23,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:22" (2/3) ... [2023-11-06 22:07:23,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf5114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:23, skipping insertion in model container [2023-11-06 22:07:23,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:23" (3/3) ... [2023-11-06 22:07:23,376 INFO L112 eAbstractionObserver]: Analyzing ICFG filter1.c [2023-11-06 22:07:23,397 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:07:23,397 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:07:23,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:07:23,455 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;@ca4c77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:07:23,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:07:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 22:07:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:07:23,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:23,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:23,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:23,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:23,476 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2023-11-06 22:07:23,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304876440] [2023-11-06 22:07:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:23,627 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 22:07:23,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:23,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304876440] [2023-11-06 22:07:23,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304876440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:23,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:23,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:07:23,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457738316] [2023-11-06 22:07:23,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:23,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:07:23,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:23,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:07:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:07:23,671 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 2 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) [2023-11-06 22:07:23,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:23,688 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-11-06 22:07:23,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:07:23,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 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) Word has length 9 [2023-11-06 22:07:23,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:23,700 INFO L225 Difference]: With dead ends: 30 [2023-11-06 22:07:23,700 INFO L226 Difference]: Without dead ends: 12 [2023-11-06 22:07:23,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:07:23,707 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:23,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:07:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-06 22:07:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-06 22:07:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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 22:07:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-06 22:07:23,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2023-11-06 22:07:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:23,743 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-06 22:07:23,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2023-11-06 22:07:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-06 22:07:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:07:23,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:23,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:23,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:07:23,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:23,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2023-11-06 22:07:23,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:23,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145805257] [2023-11-06 22:07:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:23,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:23,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:23,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:23,808 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:07:23,809 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:07:23,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:07:23,815 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:07:23,819 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:07:23,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:07:23 BoogieIcfgContainer [2023-11-06 22:07:23,838 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:07:23,839 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:07:23,839 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:07:23,840 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:07:23,840 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:23" (3/4) ... [2023-11-06 22:07:23,843 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:07:23,844 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:07:23,845 INFO L158 Benchmark]: Toolchain (without parser) took 1119.05ms. Allocated memory is still 184.5MB. Free memory was 154.6MB in the beginning and 125.9MB in the end (delta: 28.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2023-11-06 22:07:23,846 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:07:23,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.68ms. Allocated memory is still 184.5MB. Free memory was 154.6MB in the beginning and 144.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:07:23,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.57ms. Allocated memory is still 184.5MB. Free memory was 144.1MB in the beginning and 142.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:07:23,848 INFO L158 Benchmark]: Boogie Preprocessor took 32.88ms. Allocated memory is still 184.5MB. Free memory was 142.0MB in the beginning and 141.1MB in the end (delta: 881.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:07:23,848 INFO L158 Benchmark]: RCFGBuilder took 301.26ms. Allocated memory is still 184.5MB. Free memory was 141.1MB in the beginning and 150.1MB in the end (delta: -9.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:07:23,849 INFO L158 Benchmark]: TraceAbstraction took 469.55ms. Allocated memory is still 184.5MB. Free memory was 149.0MB in the beginning and 125.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 22:07:23,850 INFO L158 Benchmark]: Witness Printer took 5.26ms. Allocated memory is still 184.5MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:07:23,853 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.68ms. Allocated memory is still 184.5MB. Free memory was 154.6MB in the beginning and 144.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.57ms. Allocated memory is still 184.5MB. Free memory was 144.1MB in the beginning and 142.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.88ms. Allocated memory is still 184.5MB. Free memory was 142.0MB in the beginning and 141.1MB in the end (delta: 881.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 301.26ms. Allocated memory is still 184.5MB. Free memory was 141.1MB in the beginning and 150.1MB in the end (delta: -9.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 469.55ms. Allocated memory is still 184.5MB. Free memory was 149.0MB in the beginning and 125.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.26ms. Allocated memory is still 184.5MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 17]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of to_real at line 34. Possible FailurePath: [L22] double E0, E1, S; [L23] int i; [L25] E1 = 0 [L26] S = 0 [L28] i = 0 VAL [i=0] [L28] COND TRUE i <= 1000000 [L30] E0 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(E0 >= -1. && E0 <= 1.) [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L31] RET assume_abort_if_not(E0 >= -1. && E0 <= 1.) [L33] COND TRUE __VERIFIER_nondet_int() [L34] S = 0 VAL [i=0] [L39] E1 = E0 [L41] CALL __VERIFIER_assert(S >= -10000. && S <= 10000.) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:07:23,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/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_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/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 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:07:26,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:07:26,628 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 22:07:26,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:07:26,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:07:26,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:07:26,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:07:26,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:07:26,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:07:26,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:07:26,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:07:26,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:07:26,693 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:07:26,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:07:26,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:07:26,696 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:07:26,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:07:26,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:07:26,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:07:26,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:07:26,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:07:26,699 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:07:26,699 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:07:26,699 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:07:26,700 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:07:26,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:07:26,700 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:07:26,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:07:26,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:07:26,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:07:26,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:26,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:07:26,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:07:26,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:07:26,704 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:07:26,704 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:07:26,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:07:26,705 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:07:26,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:07:26,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:07:26,706 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:07:26,706 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:07:26,706 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_97a23574-8647-4976-978f-40f83fbcbd58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef [2023-11-06 22:07:27,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:07:27,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:07:27,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:07:27,154 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:07:27,154 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:07:27,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/float-benchs/filter1.c [2023-11-06 22:07:30,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:07:30,684 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:07:30,686 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/sv-benchmarks/c/float-benchs/filter1.c [2023-11-06 22:07:30,696 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/data/e5ea4acfa/e4138e275e784449902a8732ef05ce19/FLAG150532f59 [2023-11-06 22:07:30,712 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/data/e5ea4acfa/e4138e275e784449902a8732ef05ce19 [2023-11-06 22:07:30,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:07:30,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:07:30,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:30,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:07:30,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:07:30,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:30" (1/1) ... [2023-11-06 22:07:30,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1952d7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:30, skipping insertion in model container [2023-11-06 22:07:30,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:30" (1/1) ... [2023-11-06 22:07:30,752 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:07:30,926 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_97a23574-8647-4976-978f-40f83fbcbd58/sv-benchmarks/c/float-benchs/filter1.c[627,640] [2023-11-06 22:07:30,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:30,960 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:07:30,977 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_97a23574-8647-4976-978f-40f83fbcbd58/sv-benchmarks/c/float-benchs/filter1.c[627,640] [2023-11-06 22:07:30,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:31,018 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:07:31,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31 WrapperNode [2023-11-06 22:07:31,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:31,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:31,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:07:31,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:07:31,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,073 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2023-11-06 22:07:31,074 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:31,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:07:31,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:07:31,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:07:31,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:07:31,137 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:07:31,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:07:31,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:07:31,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:31,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:31,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:31,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:07:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:07:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:07:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:07:31,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:07:31,365 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:07:31,368 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:07:33,608 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:07:33,615 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:07:33,615 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:07:33,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:33 BoogieIcfgContainer [2023-11-06 22:07:33,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:07:33,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:07:33,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:07:33,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:07:33,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:07:30" (1/3) ... [2023-11-06 22:07:33,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5321440d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:33, skipping insertion in model container [2023-11-06 22:07:33,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31" (2/3) ... [2023-11-06 22:07:33,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5321440d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:33, skipping insertion in model container [2023-11-06 22:07:33,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:33" (3/3) ... [2023-11-06 22:07:33,627 INFO L112 eAbstractionObserver]: Analyzing ICFG filter1.c [2023-11-06 22:07:33,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:07:33,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:07:33,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:07:33,703 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;@1d528333, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:07:33,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:07:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 22:07:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:07:33,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:33,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:33,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:33,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2023-11-06 22:07:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:33,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18573994] [2023-11-06 22:07:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:33,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:07:33,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:33,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:07:33,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:07:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:33,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:07:33,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:33,891 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 22:07:33,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:33,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:07:33,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18573994] [2023-11-06 22:07:33,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18573994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:33,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:33,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:07:33,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851829060] [2023-11-06 22:07:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:33,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:07:33,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:07:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:07:33,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:07:33,953 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 2 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) [2023-11-06 22:07:33,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:33,972 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-11-06 22:07:33,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:07:33,974 INFO L78 Accepts]: Start accepts. Automaton has has 2 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) Word has length 9 [2023-11-06 22:07:33,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:33,983 INFO L225 Difference]: With dead ends: 30 [2023-11-06 22:07:33,984 INFO L226 Difference]: Without dead ends: 12 [2023-11-06 22:07:33,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:07:33,992 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:33,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:07:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-06 22:07:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-06 22:07:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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 22:07:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-06 22:07:34,026 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2023-11-06 22:07:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:34,027 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-06 22:07:34,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2023-11-06 22:07:34,028 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-06 22:07:34,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:07:34,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:34,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:34,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:34,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:07:34,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:34,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2023-11-06 22:07:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138421693] [2023-11-06 22:07:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:34,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:07:34,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:34,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:07:34,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:07:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:34,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:07:34,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:34,525 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 22:07:34,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:34,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:07:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138421693] [2023-11-06 22:07:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138421693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:34,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:34,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:07:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294161362] [2023-11-06 22:07:34,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:34,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:07:34,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:07:34,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:07:34,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:07:34,531 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-11-06 22:07:35,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:35,204 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-11-06 22:07:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:07:35,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Word has length 9 [2023-11-06 22:07:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:35,206 INFO L225 Difference]: With dead ends: 22 [2023-11-06 22:07:35,206 INFO L226 Difference]: Without dead ends: 20 [2023-11-06 22:07:35,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:07:35,208 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:35,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:07:35,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-06 22:07:35,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2023-11-06 22:07:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 22:07:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-11-06 22:07:35,214 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2023-11-06 22:07:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:35,215 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-11-06 22:07:35,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-11-06 22:07:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-06 22:07:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:07:35,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:35,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:35,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:35,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:07:35,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:35,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:35,418 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2023-11-06 22:07:35,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:35,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062431695] [2023-11-06 22:07:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:35,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:07:35,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:35,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:07:35,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:07:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:35,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:07:35,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:36,986 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 22:07:36,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:36,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:07:36,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062431695] [2023-11-06 22:07:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062431695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:36,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:36,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:07:36,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872035134] [2023-11-06 22:07:36,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:36,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:07:36,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:07:36,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:07:36,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:07:36,989 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 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) [2023-11-06 22:07:40,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:43,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:07:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:43,092 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-11-06 22:07:43,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:07:43,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 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) Word has length 9 [2023-11-06 22:07:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:43,133 INFO L225 Difference]: With dead ends: 29 [2023-11-06 22:07:43,133 INFO L226 Difference]: Without dead ends: 27 [2023-11-06 22:07:43,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:07:43,135 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:43,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 25 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2023-11-06 22:07:43,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-06 22:07:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2023-11-06 22:07:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 22:07:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-06 22:07:43,147 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2023-11-06 22:07:43,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:43,148 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-06 22:07:43,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 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) [2023-11-06 22:07:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-06 22:07:43,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 22:07:43,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:43,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:43,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:07:43,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:43,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:43,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1443795685, now seen corresponding path program 1 times [2023-11-06 22:07:43,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:43,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130515467] [2023-11-06 22:07:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:43,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:07:43,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:43,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:07:43,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a23574-8647-4976-978f-40f83fbcbd58/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:07:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:43,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:07:43,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:15,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:28,418 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2023-11-06 22:08:30,469 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2023-11-06 22:08:53,498 WARN L839 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) is different from false [2023-11-06 22:08:55,545 WARN L861 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) is different from true [2023-11-06 22:09:22,676 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.neg .cse2)) (.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (forall ((|v_ULTIMATE.start_main_~E0~0#1_7| (_ FloatingPoint 11 53))) (or (fp.leq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~E0~0#1_7|) |c_ULTIMATE.start_main_~E1~0#1|) .cse1) (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_7| .cse2)) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_7| .cse3)))) (forall ((|v_ULTIMATE.start_main_~E0~0#1_7| (_ FloatingPoint 11 53))) (or (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_7| .cse2)) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_7| .cse3)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~E0~0#1_7|) |c_ULTIMATE.start_main_~E1~0#1|) (fp.neg .cse1))))))) is different from true [2023-11-06 22:11:05,122 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0)) (.cse3 (fp.neg .cse2))) (and (forall ((|v_ULTIMATE.start_main_~E0~0#1_7| (_ FloatingPoint 11 53))) (or (fp.leq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~E0~0#1_7|) |c_ULTIMATE.start_main_~E0~0#1|) .cse1) (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_7| .cse2)) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_7| .cse3)))) (forall ((|v_ULTIMATE.start_main_~E0~0#1_7| (_ FloatingPoint 11 53))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~E0~0#1_7|) |c_ULTIMATE.start_main_~E0~0#1|) (fp.neg .cse1)) (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_7| .cse2)) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_7| .cse3))))))) is different from true