./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 e45fd403bdea0e38df4202df32820dd99db87a388b8be6e5049c26042da28d7d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:23:32,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:23:32,376 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:23:32,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:23:32,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:23:32,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:23:32,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:23:32,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:23:32,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:23:32,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:23:32,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:23:32,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:23:32,462 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:23:32,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:23:32,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:23:32,465 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:23:32,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:23:32,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:23:32,466 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:23:32,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:23:32,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:23:32,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:23:32,468 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:23:32,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:23:32,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:23:32,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:23:32,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:23:32,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:23:32,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:32,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:23:32,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:23:32,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:23:32,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:23:32,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:23:32,497 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:23:32,497 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:23:32,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:23:32,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:23:32,498 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:23:32,498 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_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45fd403bdea0e38df4202df32820dd99db87a388b8be6e5049c26042da28d7d [2023-11-12 02:23:32,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:23:32,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:23:32,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:23:32,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:23:32,923 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:23:32,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2023-11-12 02:23:36,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:23:36,358 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:23:36,359 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2023-11-12 02:23:36,366 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/data/a9df89472/8e3dc3a5b4824c2bb55dc891df9690b0/FLAG49777ad73 [2023-11-12 02:23:36,380 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/data/a9df89472/8e3dc3a5b4824c2bb55dc891df9690b0 [2023-11-12 02:23:36,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:23:36,385 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:23:36,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:36,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:23:36,396 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:23:36,397 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cdf57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36, skipping insertion in model container [2023-11-12 02:23:36,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,426 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:23:36,628 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_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/sv-benchmarks/c/floats-cdfpl/newton_1_2.i[1722,1735] [2023-11-12 02:23:36,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:36,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:23:36,679 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_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/sv-benchmarks/c/floats-cdfpl/newton_1_2.i[1722,1735] [2023-11-12 02:23:36,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:36,695 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:23:36,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36 WrapperNode [2023-11-12 02:23:36,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:36,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:36,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:23:36,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:23:36,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,734 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2023-11-12 02:23:36,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:36,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:23:36,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:23:36,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:23:36,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,757 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:23:36,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:23:36,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:23:36,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:23:36,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (1/1) ... [2023-11-12 02:23:36,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:36,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:36,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:23:36,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:23:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:23:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:23:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:23:36,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:23:36,940 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:23:36,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:23:37,034 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:23:37,041 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:23:37,041 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:23:37,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:37 BoogieIcfgContainer [2023-11-12 02:23:37,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:23:37,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:23:37,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:23:37,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:23:37,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:23:36" (1/3) ... [2023-11-12 02:23:37,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37afb70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:37, skipping insertion in model container [2023-11-12 02:23:37,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:36" (2/3) ... [2023-11-12 02:23:37,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37afb70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:37, skipping insertion in model container [2023-11-12 02:23:37,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:37" (3/3) ... [2023-11-12 02:23:37,053 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_1_2.i [2023-11-12 02:23:37,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:23:37,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:23:37,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:23:37,126 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@136147e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:23:37,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:23:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-11-12 02:23:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:23:37,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:37,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:37,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:37,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:37,146 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2023-11-12 02:23:37,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:37,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615847096] [2023-11-12 02:23:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:37,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:37,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:37,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615847096] [2023-11-12 02:23:37,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615847096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:37,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:37,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:23:37,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822682276] [2023-11-12 02:23:37,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:37,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:23:37,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:23:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:23:37,335 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-12 02:23:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:37,349 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-11-12 02:23:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:23:37,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-12 02:23:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:37,359 INFO L225 Difference]: With dead ends: 23 [2023-11-12 02:23:37,359 INFO L226 Difference]: Without dead ends: 9 [2023-11-12 02:23:37,362 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 [2023-11-12 02:23:37,366 INFO L413 NwaCegarLoop]: 12 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, 12 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 [2023-11-12 02:23:37,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:23:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-12 02:23:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-12 02:23:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2023-11-12 02:23:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2023-11-12 02:23:37,395 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2023-11-12 02:23:37,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:37,395 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2023-11-12 02:23:37,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-12 02:23:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2023-11-12 02:23:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:23:37,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:37,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:37,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:23:37,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:37,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:37,397 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2023-11-12 02:23:37,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:37,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612296608] [2023-11-12 02:23:37,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:37,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:23:37,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:23:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:23:37,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:23:37,451 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:23:37,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 02:23:37,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:23:37,458 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:23:37,462 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:23:37,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:23:37 BoogieIcfgContainer [2023-11-12 02:23:37,482 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:23:37,483 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:23:37,483 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:23:37,484 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:23:37,484 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:37" (3/4) ... [2023-11-12 02:23:37,487 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 02:23:37,488 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:23:37,489 INFO L158 Benchmark]: Toolchain (without parser) took 1103.85ms. Allocated memory is still 169.9MB. Free memory was 137.8MB in the beginning and 91.7MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-12 02:23:37,489 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory was 102.8MB in the beginning and 102.7MB in the end (delta: 69.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:23:37,490 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.31ms. Allocated memory is still 169.9MB. Free memory was 137.8MB in the beginning and 127.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:23:37,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.32ms. Allocated memory is still 169.9MB. Free memory was 127.3MB in the beginning and 125.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:23:37,491 INFO L158 Benchmark]: Boogie Preprocessor took 23.84ms. Allocated memory is still 169.9MB. Free memory was 125.6MB in the beginning and 124.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:23:37,492 INFO L158 Benchmark]: RCFGBuilder took 282.61ms. Allocated memory is still 169.9MB. Free memory was 124.5MB in the beginning and 115.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:23:37,492 INFO L158 Benchmark]: TraceAbstraction took 436.13ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 92.1MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 02:23:37,493 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 169.9MB. Free memory was 92.1MB in the beginning and 91.7MB in the end (delta: 364.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:23:37,497 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory was 102.8MB in the beginning and 102.7MB in the end (delta: 69.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.31ms. Allocated memory is still 169.9MB. Free memory was 137.8MB in the beginning and 127.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.32ms. Allocated memory is still 169.9MB. Free memory was 127.3MB in the beginning and 125.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.84ms. Allocated memory is still 169.9MB. Free memory was 125.6MB in the beginning and 124.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 282.61ms. Allocated memory is still 169.9MB. Free memory was 124.5MB in the beginning and 115.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 436.13ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 92.1MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 169.9MB. Free memory was 92.1MB in the beginning and 91.7MB in the end (delta: 364.4kB). Peak memory consumption was 2.1MB. 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: 51]: 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 someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 42. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L42] CALL, EXPR f(IN) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=53, x=53] [L42] RET, EXPR f(IN) [L42] CALL, EXPR fp(IN) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=53, x=53] [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=53] [L51] reach_error() VAL [IN=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 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, 12 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, 12 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=13occurred 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2023-11-12 02:23:37,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 e45fd403bdea0e38df4202df32820dd99db87a388b8be6e5049c26042da28d7d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:23:40,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:23:40,352 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-12 02:23:40,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:23:40,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:23:40,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:23:40,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:23:40,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:23:40,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:23:40,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:23:40,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:23:40,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:23:40,428 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:23:40,430 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:23:40,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:23:40,431 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:23:40,432 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:23:40,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:23:40,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:23:40,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:23:40,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:23:40,439 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:23:40,440 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:23:40,441 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:23:40,441 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:23:40,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:23:40,442 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:23:40,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:23:40,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:23:40,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:23:40,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:40,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:23:40,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:23:40,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:23:40,447 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:23:40,448 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:23:40,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:23:40,448 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:23:40,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:23:40,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:23:40,450 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:23:40,451 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:23:40,451 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_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45fd403bdea0e38df4202df32820dd99db87a388b8be6e5049c26042da28d7d [2023-11-12 02:23:40,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:23:40,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:23:40,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:23:40,996 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:23:40,997 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:23:40,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2023-11-12 02:23:44,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:23:44,661 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:23:44,662 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2023-11-12 02:23:44,676 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/data/0303d9e72/0fd15e77260148059c6805a2af6624d0/FLAG9c5119a8f [2023-11-12 02:23:44,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/data/0303d9e72/0fd15e77260148059c6805a2af6624d0 [2023-11-12 02:23:44,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:23:44,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:23:44,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:44,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:23:44,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:23:44,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:44" (1/1) ... [2023-11-12 02:23:44,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f74de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:44, skipping insertion in model container [2023-11-12 02:23:44,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:44" (1/1) ... [2023-11-12 02:23:44,758 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:23:45,029 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_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/sv-benchmarks/c/floats-cdfpl/newton_1_2.i[1722,1735] [2023-11-12 02:23:45,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:45,061 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:23:45,085 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_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/sv-benchmarks/c/floats-cdfpl/newton_1_2.i[1722,1735] [2023-11-12 02:23:45,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:45,107 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:23:45,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45 WrapperNode [2023-11-12 02:23:45,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:45,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:45,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:23:45,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:23:45,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,160 INFO L138 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2023-11-12 02:23:45,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:45,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:23:45,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:23:45,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:23:45,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:23:45,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:23:45,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:23:45,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:23:45,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (1/1) ... [2023-11-12 02:23:45,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:45,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:45,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:23:45,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:23:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:23:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:23:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:23:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:23:45,409 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:23:45,414 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:23:50,926 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:23:50,932 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:23:50,933 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:23:50,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:50 BoogieIcfgContainer [2023-11-12 02:23:50,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:23:50,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:23:50,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:23:50,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:23:50,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:23:44" (1/3) ... [2023-11-12 02:23:50,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5915d7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:50, skipping insertion in model container [2023-11-12 02:23:50,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:45" (2/3) ... [2023-11-12 02:23:50,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5915d7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:50, skipping insertion in model container [2023-11-12 02:23:50,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:50" (3/3) ... [2023-11-12 02:23:50,946 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_1_2.i [2023-11-12 02:23:50,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:23:50,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:23:51,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:23:51,037 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67d0fbc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:23:51,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:23:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-11-12 02:23:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:23:51,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:51,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:51,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:51,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:51,077 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2023-11-12 02:23:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:51,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036330491] [2023-11-12 02:23:51,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:51,093 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 [2023-11-12 02:23:51,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:51,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:23:51,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:23:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:52,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:23:52,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:52,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:52,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:52,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036330491] [2023-11-12 02:23:52,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036330491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:52,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:52,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:23:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503390819] [2023-11-12 02:23:52,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:52,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:23:52,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:52,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:23:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:23:52,508 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-12 02:23:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:52,522 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-11-12 02:23:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:23:52,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-12 02:23:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:52,534 INFO L225 Difference]: With dead ends: 23 [2023-11-12 02:23:52,534 INFO L226 Difference]: Without dead ends: 9 [2023-11-12 02:23:52,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:23:52,542 INFO L413 NwaCegarLoop]: 12 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, 12 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 [2023-11-12 02:23:52,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:23:52,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-12 02:23:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-12 02:23:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2023-11-12 02:23:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2023-11-12 02:23:52,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2023-11-12 02:23:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:52,583 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2023-11-12 02:23:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-12 02:23:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2023-11-12 02:23:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:23:52,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:52,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:52,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:23:52,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:23:52,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:52,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2023-11-12 02:23:52,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:52,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668772654] [2023-11-12 02:23:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:52,802 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 [2023-11-12 02:23:52,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:52,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:23:52,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4783bdb0-6c74-43bd-bee8-fe09fe0fc99f/bin/uautomizer-verify-uTZkv6EMXl/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