/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2018/Problem16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 18:07:49,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 18:07:49,254 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 18:07:49,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 18:07:49,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 18:07:49,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 18:07:49,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 18:07:49,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 18:07:49,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 18:07:49,295 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 18:07:49,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 18:07:49,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 18:07:49,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 18:07:49,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 18:07:49,297 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 18:07:49,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 18:07:49,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 18:07:49,298 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 18:07:49,298 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 18:07:49,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 18:07:49,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 18:07:49,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 18:07:49,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 18:07:49,299 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 18:07:49,299 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 18:07:49,299 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 18:07:49,299 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 18:07:49,299 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 18:07:49,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 18:07:49,299 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 18:07:49,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 18:07:49,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 18:07:49,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 18:07:49,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 18:07:49,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 18:07:49,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 18:07:49,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 18:07:49,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 18:07:49,301 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 18:07:49,301 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 18:07:49,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 18:07:49,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 18:07:49,302 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 18:07:49,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 18:07:49,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 18:07:49,302 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 18:07:49,302 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 18:07:49,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 18:07:49,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 18:07:49,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 18:07:49,514 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 18:07:49,517 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 18:07:49,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2018/Problem16.c [2023-12-22 18:07:50,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 18:07:54,260 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 18:07:54,260 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem16.c [2023-12-22 18:07:54,819 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa35d1c8/9f210f58801f44878e32685897b7456a/FLAG41946c516 [2023-12-22 18:07:54,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa35d1c8/9f210f58801f44878e32685897b7456a [2023-12-22 18:07:54,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 18:07:54,831 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 18:07:54,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 18:07:54,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 18:07:54,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 18:07:54,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:07:54" (1/1) ... [2023-12-22 18:07:54,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9f445c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:54, skipping insertion in model container [2023-12-22 18:07:54,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:07:54" (1/1) ... [2023-12-22 18:07:56,670 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 18:07:57,527 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem16.c[778,791] [2023-12-22 18:07:57,645 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem16.c[817,830] [2023-12-22 18:10:15,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 18:10:15,863 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 18:10:15,890 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem16.c[778,791] [2023-12-22 18:10:15,891 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2018/Problem16.c[817,830] [2023-12-22 18:10:20,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 18:10:23,880 INFO L206 MainTranslator]: Completed translation [2023-12-22 18:10:23,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23 WrapperNode [2023-12-22 18:10:23,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 18:10:23,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 18:10:23,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 18:10:23,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 18:10:23,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:25,476 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:29,901 INFO L138 Inliner]: procedures = 1385, calls = 1376, calls flagged for inlining = 1272, calls inlined = 1272, statements flattened = 632995 [2023-12-22 18:10:29,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 18:10:29,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 18:10:29,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 18:10:29,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 18:10:29,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:29,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:30,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:32,010 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 18:10:32,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:32,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:33,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:34,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:34,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:35,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:36,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 18:10:36,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 18:10:36,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 18:10:36,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 18:10:36,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (1/1) ... [2023-12-22 18:10:36,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 18:10:36,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 18:10:36,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-22 18:10:36,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 18:10:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 18:10:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 18:10:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 18:10:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2023-12-22 18:10:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2023-12-22 18:10:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2023-12-22 18:10:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2023-12-22 18:10:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 18:10:36,718 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 18:10:36,720 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 18:12:48,405 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 18:12:48,640 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 18:12:48,640 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 18:12:48,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:12:48 BoogieIcfgContainer [2023-12-22 18:12:48,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 18:12:48,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 18:12:48,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 18:12:48,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 18:12:48,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:07:54" (1/3) ... [2023-12-22 18:12:48,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48957d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:12:48, skipping insertion in model container [2023-12-22 18:12:48,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:23" (2/3) ... [2023-12-22 18:12:48,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48957d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:12:48, skipping insertion in model container [2023-12-22 18:12:48,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:12:48" (3/3) ... [2023-12-22 18:12:48,653 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16.c [2023-12-22 18:12:48,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 18:12:48,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 18:12:48,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 18:12:48,830 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;@419e5871, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 18:12:48,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 18:12:48,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 8613 states, 8508 states have (on average 1.8506111894687354) internal successors, (15745), 8510 states have internal predecessors, (15745), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-22 18:12:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-22 18:12:48,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:12:48,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 18:12:48,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:12:48,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:12:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1396961519, now seen corresponding path program 1 times [2023-12-22 18:12:48,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:12:48,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574425528] [2023-12-22 18:12:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:12:48,909 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 [2023-12-22 18:12:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:12:48,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2023-12-22 18:12:48,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:12:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:12:49,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 18:12:49,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:12:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:12:49,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:12:49,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:12:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574425528] [2023-12-22 18:12:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574425528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:12:49,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:12:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 18:12:49,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519148094] [2023-12-22 18:12:49,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:12:49,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 18:12:49,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:12:49,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 18:12:49,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:12:49,948 INFO L87 Difference]: Start difference. First operand has 8613 states, 8508 states have (on average 1.8506111894687354) internal successors, (15745), 8510 states have internal predecessors, (15745), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:13:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:13:59,817 INFO L93 Difference]: Finished difference Result 19842 states and 36825 transitions. [2023-12-22 18:13:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 18:13:59,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-22 18:13:59,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:13:59,884 INFO L225 Difference]: With dead ends: 19842 [2023-12-22 18:13:59,884 INFO L226 Difference]: Without dead ends: 11224 [2023-12-22 18:13:59,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:13:59,903 INFO L413 NwaCegarLoop]: 14948 mSDtfsCounter, 3493 mSDsluCounter, 11494 mSDsCounter, 0 mSdLazyCounter, 25190 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3493 SdHoareTripleChecker+Valid, 26442 SdHoareTripleChecker+Invalid, 25551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 25190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.7s IncrementalHoareTripleChecker+Time [2023-12-22 18:13:59,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3493 Valid, 26442 Invalid, 25551 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [361 Valid, 25190 Invalid, 0 Unknown, 0 Unchecked, 68.7s Time] [2023-12-22 18:13:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11224 states. [2023-12-22 18:14:00,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11224 to 10281. [2023-12-22 18:14:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10281 states, 10179 states have (on average 1.8513606444640927) internal successors, (18845), 10278 states have internal predecessors, (18845), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:14:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10281 states to 10281 states and 18945 transitions. [2023-12-22 18:14:00,268 INFO L78 Accepts]: Start accepts. Automaton has 10281 states and 18945 transitions. Word has length 12 [2023-12-22 18:14:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:14:00,269 INFO L495 AbstractCegarLoop]: Abstraction has 10281 states and 18945 transitions. [2023-12-22 18:14:00,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:14:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 10281 states and 18945 transitions. [2023-12-22 18:14:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-22 18:14:00,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:14:00,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 18:14:00,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:14:00,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:14:00,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:14:00,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:14:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1229885771, now seen corresponding path program 1 times [2023-12-22 18:14:00,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:14:00,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649260002] [2023-12-22 18:14:00,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:14:00,490 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 [2023-12-22 18:14:00,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:14:00,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2023-12-22 18:14:00,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:14:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:14:01,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 18:14:01,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:14:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:14:01,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:14:01,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:14:01,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649260002] [2023-12-22 18:14:01,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649260002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:14:01,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:14:01,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 18:14:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459954742] [2023-12-22 18:14:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:14:01,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 18:14:01,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:14:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 18:14:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:14:01,537 INFO L87 Difference]: Start difference. First operand 10281 states and 18945 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:21,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:15:21,916 INFO L93 Difference]: Finished difference Result 28163 states and 51657 transitions. [2023-12-22 18:15:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 18:15:21,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-22 18:15:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:15:21,963 INFO L225 Difference]: With dead ends: 28163 [2023-12-22 18:15:21,963 INFO L226 Difference]: Without dead ends: 17883 [2023-12-22 18:15:21,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 18:15:21,974 INFO L413 NwaCegarLoop]: 18433 mSDtfsCounter, 8816 mSDsluCounter, 12971 mSDsCounter, 0 mSdLazyCounter, 33257 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8816 SdHoareTripleChecker+Valid, 31404 SdHoareTripleChecker+Invalid, 34409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 33257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.3s IncrementalHoareTripleChecker+Time [2023-12-22 18:15:21,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8816 Valid, 31404 Invalid, 34409 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1152 Valid, 33257 Invalid, 0 Unknown, 0 Unchecked, 79.3s Time] [2023-12-22 18:15:21,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17883 states. [2023-12-22 18:15:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17883 to 15287. [2023-12-22 18:15:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15287 states, 15185 states have (on average 1.828580836351663) internal successors, (27767), 15284 states have internal predecessors, (27767), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15287 states to 15287 states and 27867 transitions. [2023-12-22 18:15:22,241 INFO L78 Accepts]: Start accepts. Automaton has 15287 states and 27867 transitions. Word has length 19 [2023-12-22 18:15:22,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:15:22,242 INFO L495 AbstractCegarLoop]: Abstraction has 15287 states and 27867 transitions. [2023-12-22 18:15:22,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:22,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15287 states and 27867 transitions. [2023-12-22 18:15:22,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-22 18:15:22,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:15:22,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 18:15:22,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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)] Ended with exit code 0 [2023-12-22 18:15:22,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:15:22,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:15:22,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:15:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash 32366642, now seen corresponding path program 1 times [2023-12-22 18:15:22,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:15:22,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853640234] [2023-12-22 18:15:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:15:22,461 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 [2023-12-22 18:15:22,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:15:22,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2023-12-22 18:15:22,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:15:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:15:23,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:15:23,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:15:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:15:23,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:15:23,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:15:23,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853640234] [2023-12-22 18:15:23,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853640234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:15:23,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:15:23,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:15:23,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475007509] [2023-12-22 18:15:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:15:23,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:15:23,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:15:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:15:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:23,221 INFO L87 Difference]: Start difference. First operand 15287 states and 27867 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:15:25,336 INFO L93 Difference]: Finished difference Result 44286 states and 80689 transitions. [2023-12-22 18:15:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:15:25,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-22 18:15:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:15:25,386 INFO L225 Difference]: With dead ends: 44286 [2023-12-22 18:15:25,386 INFO L226 Difference]: Without dead ends: 29000 [2023-12-22 18:15:25,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:25,402 INFO L413 NwaCegarLoop]: 16242 mSDtfsCounter, 14855 mSDsluCounter, 15368 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14855 SdHoareTripleChecker+Valid, 31610 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-22 18:15:25,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14855 Valid, 31610 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-22 18:15:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29000 states. [2023-12-22 18:15:25,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29000 to 28892. [2023-12-22 18:15:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28892 states, 28790 states have (on average 1.8268843348384856) internal successors, (52596), 28889 states have internal predecessors, (52596), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:25,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28892 states to 28892 states and 52696 transitions. [2023-12-22 18:15:25,824 INFO L78 Accepts]: Start accepts. Automaton has 28892 states and 52696 transitions. Word has length 32 [2023-12-22 18:15:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:15:25,824 INFO L495 AbstractCegarLoop]: Abstraction has 28892 states and 52696 transitions. [2023-12-22 18:15:25,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 28892 states and 52696 transitions. [2023-12-22 18:15:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-22 18:15:25,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:15:25,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 18:15:25,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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)] Ended with exit code 0 [2023-12-22 18:15:26,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:15:26,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:15:26,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:15:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash 675749198, now seen corresponding path program 1 times [2023-12-22 18:15:26,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:15:26,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099681017] [2023-12-22 18:15:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:15:26,035 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 [2023-12-22 18:15:26,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:15:26,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2023-12-22 18:15:26,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:15:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:15:26,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:15:26,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:15:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:15:26,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:15:26,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:15:26,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099681017] [2023-12-22 18:15:26,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099681017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:15:26,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:15:26,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:15:26,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516127883] [2023-12-22 18:15:26,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:15:26,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:15:26,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:15:26,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:15:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:26,809 INFO L87 Difference]: Start difference. First operand 28892 states and 52696 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:15:28,274 INFO L93 Difference]: Finished difference Result 85808 states and 156474 transitions. [2023-12-22 18:15:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:15:28,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-22 18:15:28,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:15:28,388 INFO L225 Difference]: With dead ends: 85808 [2023-12-22 18:15:28,389 INFO L226 Difference]: Without dead ends: 56917 [2023-12-22 18:15:28,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:28,438 INFO L413 NwaCegarLoop]: 16100 mSDtfsCounter, 15270 mSDsluCounter, 15458 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15270 SdHoareTripleChecker+Valid, 31558 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 18:15:28,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15270 Valid, 31558 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 18:15:28,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56917 states. [2023-12-22 18:15:29,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56917 to 56819. [2023-12-22 18:15:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56819 states, 56717 states have (on average 1.8255725796498405) internal successors, (103541), 56816 states have internal predecessors, (103541), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56819 states to 56819 states and 103641 transitions. [2023-12-22 18:15:29,178 INFO L78 Accepts]: Start accepts. Automaton has 56819 states and 103641 transitions. Word has length 36 [2023-12-22 18:15:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:15:29,178 INFO L495 AbstractCegarLoop]: Abstraction has 56819 states and 103641 transitions. [2023-12-22 18:15:29,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 56819 states and 103641 transitions. [2023-12-22 18:15:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-22 18:15:29,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:15:29,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 18:15:29,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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)] Forceful destruction successful, exit code 0 [2023-12-22 18:15:29,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:15:29,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:15:29,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:15:29,394 INFO L85 PathProgramCache]: Analyzing trace with hash -527285036, now seen corresponding path program 1 times [2023-12-22 18:15:29,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:15:29,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595392727] [2023-12-22 18:15:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:15:29,395 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 [2023-12-22 18:15:29,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:15:29,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2023-12-22 18:15:29,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 (6)] Waiting until timeout for monitored process [2023-12-22 18:15:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:15:30,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:15:30,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:15:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:15:30,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:15:30,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:15:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595392727] [2023-12-22 18:15:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595392727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:15:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:15:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:15:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121443917] [2023-12-22 18:15:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:15:30,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:15:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:15:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:15:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:30,144 INFO L87 Difference]: Start difference. First operand 56819 states and 103641 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:15:31,363 INFO L93 Difference]: Finished difference Result 170102 states and 310278 transitions. [2023-12-22 18:15:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:15:31,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-22 18:15:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:15:31,570 INFO L225 Difference]: With dead ends: 170102 [2023-12-22 18:15:31,571 INFO L226 Difference]: Without dead ends: 113284 [2023-12-22 18:15:31,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:31,648 INFO L413 NwaCegarLoop]: 15908 mSDtfsCounter, 15541 mSDsluCounter, 15661 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15541 SdHoareTripleChecker+Valid, 31569 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 18:15:31,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15541 Valid, 31569 Invalid, 106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 18:15:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113284 states. [2023-12-22 18:15:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113284 to 113177. [2023-12-22 18:15:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113177 states, 113075 states have (on average 1.8249215122706168) internal successors, (206353), 113174 states have internal predecessors, (206353), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:33,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113177 states to 113177 states and 206453 transitions. [2023-12-22 18:15:33,998 INFO L78 Accepts]: Start accepts. Automaton has 113177 states and 206453 transitions. Word has length 37 [2023-12-22 18:15:33,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:15:33,998 INFO L495 AbstractCegarLoop]: Abstraction has 113177 states and 206453 transitions. [2023-12-22 18:15:33,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:33,998 INFO L276 IsEmpty]: Start isEmpty. Operand 113177 states and 206453 transitions. [2023-12-22 18:15:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-22 18:15:34,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:15:34,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 18:15:34,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 (6)] Forceful destruction successful, exit code 0 [2023-12-22 18:15:34,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:15:34,202 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:15:34,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:15:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash 833366166, now seen corresponding path program 1 times [2023-12-22 18:15:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:15:34,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938227112] [2023-12-22 18:15:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:15:34,204 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 [2023-12-22 18:15:34,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:15:34,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2023-12-22 18:15:34,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 (7)] Waiting until timeout for monitored process [2023-12-22 18:15:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:15:35,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:15:35,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:15:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:15:35,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:15:35,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:15:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938227112] [2023-12-22 18:15:35,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938227112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:15:35,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:15:35,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:15:35,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720415407] [2023-12-22 18:15:35,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:15:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:15:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:15:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:15:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:35,479 INFO L87 Difference]: Start difference. First operand 113177 states and 206453 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:15:44,230 INFO L93 Difference]: Finished difference Result 298278 states and 545798 transitions. [2023-12-22 18:15:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:15:44,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-22 18:15:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:15:44,583 INFO L225 Difference]: With dead ends: 298278 [2023-12-22 18:15:44,583 INFO L226 Difference]: Without dead ends: 185102 [2023-12-22 18:15:44,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:44,680 INFO L413 NwaCegarLoop]: 19766 mSDtfsCounter, 14452 mSDsluCounter, 14737 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14452 SdHoareTripleChecker+Valid, 34503 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-22 18:15:44,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14452 Valid, 34503 Invalid, 1408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [388 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-22 18:15:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185102 states. [2023-12-22 18:15:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185102 to 184777. [2023-12-22 18:15:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184777 states, 184675 states have (on average 1.8318505482604575) internal successors, (338297), 184774 states have internal predecessors, (338297), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184777 states to 184777 states and 338397 transitions. [2023-12-22 18:15:47,458 INFO L78 Accepts]: Start accepts. Automaton has 184777 states and 338397 transitions. Word has length 38 [2023-12-22 18:15:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:15:47,459 INFO L495 AbstractCegarLoop]: Abstraction has 184777 states and 338397 transitions. [2023-12-22 18:15:47,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 184777 states and 338397 transitions. [2023-12-22 18:15:47,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 18:15:47,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:15:47,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 18:15:47,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 (7)] Ended with exit code 0 [2023-12-22 18:15:47,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:15:47,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:15:47,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:15:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2085598333, now seen corresponding path program 1 times [2023-12-22 18:15:47,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:15:47,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254288130] [2023-12-22 18:15:47,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:15:47,666 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 [2023-12-22 18:15:47,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:15:47,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2023-12-22 18:15:47,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 (8)] Waiting until timeout for monitored process [2023-12-22 18:15:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 18:15:48,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 18:15:48,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 18:15:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 18:15:48,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 18:15:48,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 18:15:48,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254288130] [2023-12-22 18:15:48,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254288130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 18:15:48,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 18:15:48,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 18:15:48,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431604145] [2023-12-22 18:15:48,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 18:15:48,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 18:15:48,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 18:15:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 18:15:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:48,346 INFO L87 Difference]: Start difference. First operand 184777 states and 338397 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 18:15:52,051 INFO L93 Difference]: Finished difference Result 543373 states and 995009 transitions. [2023-12-22 18:15:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 18:15:52,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-22 18:15:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 18:15:53,009 INFO L225 Difference]: With dead ends: 543373 [2023-12-22 18:15:53,009 INFO L226 Difference]: Without dead ends: 358597 [2023-12-22 18:15:53,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 18:15:53,144 INFO L413 NwaCegarLoop]: 16192 mSDtfsCounter, 15459 mSDsluCounter, 15627 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15459 SdHoareTripleChecker+Valid, 31819 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 18:15:53,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15459 Valid, 31819 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 18:15:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358597 states. [2023-12-22 18:15:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358597 to 358493. [2023-12-22 18:15:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358493 states, 358391 states have (on average 1.8310476546565064) internal successors, (656231), 358490 states have internal predecessors, (656231), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358493 states to 358493 states and 656331 transitions. [2023-12-22 18:15:58,361 INFO L78 Accepts]: Start accepts. Automaton has 358493 states and 656331 transitions. Word has length 39 [2023-12-22 18:15:58,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 18:15:58,361 INFO L495 AbstractCegarLoop]: Abstraction has 358493 states and 656331 transitions. [2023-12-22 18:15:58,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 18:15:58,361 INFO L276 IsEmpty]: Start isEmpty. Operand 358493 states and 656331 transitions. [2023-12-22 18:15:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 18:15:58,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 18:15:58,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 18:15:58,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 (8)] Forceful destruction successful, exit code 0 [2023-12-22 18:15:58,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2023-12-22 18:15:58,570 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 18:15:58,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 18:15:58,570 INFO L85 PathProgramCache]: Analyzing trace with hash 63887164, now seen corresponding path program 1 times [2023-12-22 18:15:58,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 18:15:58,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144904041] [2023-12-22 18:15:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 18:15:58,572 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 [2023-12-22 18:15:58,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 18:15:58,574 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2023-12-22 18:15:58,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 (9)] Waiting until timeout for monitored process