/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/loops-crafted-1/mono-crafted_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:35:29,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:35:29,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:35:29,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:35:29,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:35:29,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:35:29,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:35:29,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:35:29,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:35:29,471 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:35:29,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:35:29,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:35:29,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:35:29,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:35:29,472 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:35:29,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:35:29,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:35:29,473 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:35:29,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:35:29,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:35:29,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:35:29,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:35:29,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:35:29,474 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:35:29,474 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:35:29,475 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:35:29,475 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:35:29,475 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:35:29,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:35:29,475 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:35:29,476 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:35:29,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:35:29,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:35:29,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:35:29,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:35:29,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:35:29,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:35:29,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:35:29,477 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:35:29,477 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:35:29,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:35:29,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:35:29,478 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:35:29,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:35:29,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:35:29,478 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:35:29,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:35:29,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:35:29,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:35:29,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:35:29,667 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:35:29,668 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:35:29,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_10.c [2023-12-16 16:35:30,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:35:30,901 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:35:30,902 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_10.c [2023-12-16 16:35:30,907 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5634a6e27/2fc7708c945146508a983500215b5d27/FLAG1bb9a0f10 [2023-12-16 16:35:30,919 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5634a6e27/2fc7708c945146508a983500215b5d27 [2023-12-16 16:35:30,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:35:30,922 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:35:30,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:35:30,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:35:30,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:35:30,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:35:30" (1/1) ... [2023-12-16 16:35:30,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a53448b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:30, skipping insertion in model container [2023-12-16 16:35:30,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:35:30" (1/1) ... [2023-12-16 16:35:30,941 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:35:31,056 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_10.c[319,332] [2023-12-16 16:35:31,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:35:31,075 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:35:31,082 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_10.c[319,332] [2023-12-16 16:35:31,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:35:31,097 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:35:31,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31 WrapperNode [2023-12-16 16:35:31,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:35:31,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:35:31,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:35:31,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:35:31,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,131 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2023-12-16 16:35:31,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:35:31,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:35:31,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:35:31,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:35:31,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,140 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,149 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]. [2023-12-16 16:35:31,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:35:31,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:35:31,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:35:31,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:35:31,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (1/1) ... [2023-12-16 16:35:31,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:35:31,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:35:31,184 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) [2023-12-16 16:35:31,219 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 [2023-12-16 16:35:31,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:35:31,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:35:31,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:35:31,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:35:31,278 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:35:31,280 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:35:31,359 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:35:31,378 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:35:31,378 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 16:35:31,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:35:31 BoogieIcfgContainer [2023-12-16 16:35:31,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:35:31,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:35:31,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:35:31,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:35:31,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:35:30" (1/3) ... [2023-12-16 16:35:31,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4aafbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:35:31, skipping insertion in model container [2023-12-16 16:35:31,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:31" (2/3) ... [2023-12-16 16:35:31,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4aafbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:35:31, skipping insertion in model container [2023-12-16 16:35:31,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:35:31" (3/3) ... [2023-12-16 16:35:31,386 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_10.c [2023-12-16 16:35:31,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:35:31,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:35:31,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:35:31,443 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;@38528f59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:35:31,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:35:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:35:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-16 16:35:31,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:31,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-16 16:35:31,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:31,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash 63417192, now seen corresponding path program 1 times [2023-12-16 16:35:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777052736] [2023-12-16 16:35:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:35:31,463 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 [2023-12-16 16:35:31,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:31,466 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) [2023-12-16 16:35:31,487 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 [2023-12-16 16:35:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:35:31,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:35:31,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:31,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:35:31,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777052736] [2023-12-16 16:35:31,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777052736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:35:31,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:35:31,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:35:31,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590834387] [2023-12-16 16:35:31,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:35:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:35:31,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:31,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:35:31,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:35:31,542 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-16 16:35:31,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:31,555 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2023-12-16 16:35:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:35:31,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-12-16 16:35:31,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:31,561 INFO L225 Difference]: With dead ends: 16 [2023-12-16 16:35:31,561 INFO L226 Difference]: Without dead ends: 8 [2023-12-16 16:35:31,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:35:31,566 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:31,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:35:31,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-16 16:35:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-16 16:35:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:35:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-12-16 16:35:31,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2023-12-16 16:35:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:31,586 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-12-16 16:35:31,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-16 16:35:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-12-16 16:35:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-16 16:35:31,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:31,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-16 16:35:31,591 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 [2023-12-16 16:35:31,791 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 [2023-12-16 16:35:31,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:31,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash 63089491, now seen corresponding path program 1 times [2023-12-16 16:35:31,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:31,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254648868] [2023-12-16 16:35:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:35:31,794 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 [2023-12-16 16:35:31,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:31,795 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) [2023-12-16 16:35:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:35:31,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 16:35:31,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:31,826 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 [2023-12-16 16:35:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:31,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:35:31,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:31,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254648868] [2023-12-16 16:35:31,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254648868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:35:31,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:35:31,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:35:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081954616] [2023-12-16 16:35:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:35:31,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:35:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:31,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:35:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:35:31,842 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-16 16:35:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:31,870 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2023-12-16 16:35:31,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:35:31,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-12-16 16:35:31,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:31,871 INFO L225 Difference]: With dead ends: 18 [2023-12-16 16:35:31,871 INFO L226 Difference]: Without dead ends: 11 [2023-12-16 16:35:31,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:35:31,872 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:31,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:35:31,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-16 16:35:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2023-12-16 16:35:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:35:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-12-16 16:35:31,876 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2023-12-16 16:35:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:31,876 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-12-16 16:35:31,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-12-16 16:35:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-12-16 16:35:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 16:35:31,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:31,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:31,881 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 (3)] Forceful destruction successful, exit code 0 [2023-12-16 16:35:32,078 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 [2023-12-16 16:35:32,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:32,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash -100395752, now seen corresponding path program 1 times [2023-12-16 16:35:32,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:32,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136916018] [2023-12-16 16:35:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:35:32,080 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 [2023-12-16 16:35:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:32,088 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) [2023-12-16 16:35:32,089 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 [2023-12-16 16:35:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:35:32,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:35:32,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:32,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:32,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:32,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136916018] [2023-12-16 16:35:32,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136916018] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:32,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 16:35:32,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416515527] [2023-12-16 16:35:32,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:32,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:35:32,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:35:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:35:32,240 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:35:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:32,308 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-12-16 16:35:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:35:32,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 16:35:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:32,310 INFO L225 Difference]: With dead ends: 25 [2023-12-16 16:35:32,311 INFO L226 Difference]: Without dead ends: 18 [2023-12-16 16:35:32,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:35:32,312 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:32,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:35:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-16 16:35:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-16 16:35:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:35:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-12-16 16:35:32,315 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2023-12-16 16:35:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:32,316 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-12-16 16:35:32,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:35:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-12-16 16:35:32,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 16:35:32,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:32,326 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2023-12-16 16:35:32,334 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 [2023-12-16 16:35:32,534 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 [2023-12-16 16:35:32,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:32,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1140498195, now seen corresponding path program 2 times [2023-12-16 16:35:32,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:32,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972119454] [2023-12-16 16:35:32,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:35:32,536 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 [2023-12-16 16:35:32,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:32,536 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) [2023-12-16 16:35:32,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:35:32,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:32,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:35:32,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:32,564 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 [2023-12-16 16:35:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:32,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:32,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:32,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972119454] [2023-12-16 16:35:32,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972119454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:32,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:32,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 16:35:32,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834677618] [2023-12-16 16:35:32,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:32,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 16:35:32,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 16:35:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:35:32,810 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2023-12-16 16:35:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:33,111 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2023-12-16 16:35:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:35:33,112 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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 17 [2023-12-16 16:35:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:33,112 INFO L225 Difference]: With dead ends: 45 [2023-12-16 16:35:33,112 INFO L226 Difference]: Without dead ends: 36 [2023-12-16 16:35:33,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 16:35:33,115 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:33,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 22 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:35:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-16 16:35:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-16 16:35:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 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) [2023-12-16 16:35:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-12-16 16:35:33,120 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 17 [2023-12-16 16:35:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:33,120 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-12-16 16:35:33,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2023-12-16 16:35:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-12-16 16:35:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 16:35:33,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:33,121 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1] [2023-12-16 16:35:33,128 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 (5)] Ended with exit code 0 [2023-12-16 16:35:33,326 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 [2023-12-16 16:35:33,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:33,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1831092403, now seen corresponding path program 3 times [2023-12-16 16:35:33,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774135570] [2023-12-16 16:35:33,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:35:33,330 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 [2023-12-16 16:35:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:33,331 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) [2023-12-16 16:35:33,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 16:35:33,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:33,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:35:33,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:33,358 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 [2023-12-16 16:35:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-16 16:35:33,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:35:33,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:33,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774135570] [2023-12-16 16:35:33,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774135570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:35:33,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:35:33,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 16:35:33,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547583804] [2023-12-16 16:35:33,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:35:33,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:35:33,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:35:33,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:35:33,468 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-12-16 16:35:33,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:33,502 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2023-12-16 16:35:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:35:33,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 35 [2023-12-16 16:35:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:33,506 INFO L225 Difference]: With dead ends: 62 [2023-12-16 16:35:33,506 INFO L226 Difference]: Without dead ends: 58 [2023-12-16 16:35:33,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:35:33,508 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:33,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:35:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-16 16:35:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 36. [2023-12-16 16:35:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 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) [2023-12-16 16:35:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-12-16 16:35:33,523 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 35 [2023-12-16 16:35:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:33,524 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-12-16 16:35:33,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-12-16 16:35:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-12-16 16:35:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 16:35:33,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:33,525 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:33,529 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 [2023-12-16 16:35:33,729 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 [2023-12-16 16:35:33,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:33,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:33,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1773834101, now seen corresponding path program 1 times [2023-12-16 16:35:33,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:33,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438525660] [2023-12-16 16:35:33,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:35:33,731 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 [2023-12-16 16:35:33,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:33,732 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) [2023-12-16 16:35:33,733 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 [2023-12-16 16:35:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:35:33,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 16:35:33,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:33,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:34,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:34,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438525660] [2023-12-16 16:35:34,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438525660] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:34,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:34,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-16 16:35:34,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826454963] [2023-12-16 16:35:34,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:34,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 16:35:34,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 16:35:34,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2023-12-16 16:35:34,053 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 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) [2023-12-16 16:35:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:34,538 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2023-12-16 16:35:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 16:35:34,539 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 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 35 [2023-12-16 16:35:34,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:34,540 INFO L225 Difference]: With dead ends: 87 [2023-12-16 16:35:34,540 INFO L226 Difference]: Without dead ends: 69 [2023-12-16 16:35:34,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=591, Unknown=0, NotChecked=0, Total=930 [2023-12-16 16:35:34,541 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:34,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 25 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:35:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-16 16:35:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-16 16:35:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 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) [2023-12-16 16:35:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2023-12-16 16:35:34,549 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 35 [2023-12-16 16:35:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:34,549 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2023-12-16 16:35:34,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 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) [2023-12-16 16:35:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2023-12-16 16:35:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 16:35:34,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:34,551 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:34,555 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 (7)] Forceful destruction successful, exit code 0 [2023-12-16 16:35:34,751 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 [2023-12-16 16:35:34,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:34,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:34,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1186010854, now seen corresponding path program 2 times [2023-12-16 16:35:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120571466] [2023-12-16 16:35:34,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:35:34,755 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 [2023-12-16 16:35:34,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:34,756 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) [2023-12-16 16:35:34,760 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 [2023-12-16 16:35:34,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:35:34,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:34,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 16:35:34,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 41 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:35,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 41 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:35,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:35,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120571466] [2023-12-16 16:35:35,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120571466] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:35,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:35,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-16 16:35:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739316920] [2023-12-16 16:35:35,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:35,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-16 16:35:35,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:35,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-16 16:35:35,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1366, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 16:35:35,907 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 44 states, 44 states have (on average 2.977272727272727) internal successors, (131), 43 states have internal predecessors, (131), 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) [2023-12-16 16:35:38,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:38,354 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2023-12-16 16:35:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-16 16:35:38,355 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.977272727272727) internal successors, (131), 43 states have internal predecessors, (131), 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 68 [2023-12-16 16:35:38,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:38,356 INFO L225 Difference]: With dead ends: 144 [2023-12-16 16:35:38,356 INFO L226 Difference]: Without dead ends: 135 [2023-12-16 16:35:38,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1406, Invalid=2626, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 16:35:38,358 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:38,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 51 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 16:35:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-16 16:35:38,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-12-16 16:35:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 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) [2023-12-16 16:35:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2023-12-16 16:35:38,368 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 68 [2023-12-16 16:35:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:38,369 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2023-12-16 16:35:38,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.977272727272727) internal successors, (131), 43 states have internal predecessors, (131), 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) [2023-12-16 16:35:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2023-12-16 16:35:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 16:35:38,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:38,371 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:38,378 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 (8)] Ended with exit code 0 [2023-12-16 16:35:38,574 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 [2023-12-16 16:35:38,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:38,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash 523367546, now seen corresponding path program 3 times [2023-12-16 16:35:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:38,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444665386] [2023-12-16 16:35:38,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:35:38,576 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 [2023-12-16 16:35:38,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:38,577 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) [2023-12-16 16:35:38,578 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 [2023-12-16 16:35:38,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 16:35:38,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:38,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:35:38,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2023-12-16 16:35:38,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2023-12-16 16:35:40,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:40,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444665386] [2023-12-16 16:35:40,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444665386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:40,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:40,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-16 16:35:40,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882123043] [2023-12-16 16:35:40,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:40,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 16:35:40,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:40,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 16:35:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:35:40,227 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2023-12-16 16:35:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:40,364 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2023-12-16 16:35:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:35:40,365 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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 134 [2023-12-16 16:35:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:40,369 INFO L225 Difference]: With dead ends: 157 [2023-12-16 16:35:40,369 INFO L226 Difference]: Without dead ends: 148 [2023-12-16 16:35:40,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=187, Unknown=0, NotChecked=0, Total=306 [2023-12-16 16:35:40,372 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 33 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:40,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:35:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-16 16:35:40,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2023-12-16 16:35:40,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0342465753424657) internal successors, (151), 146 states have internal predecessors, (151), 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) [2023-12-16 16:35:40,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2023-12-16 16:35:40,395 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 134 [2023-12-16 16:35:40,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:40,395 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2023-12-16 16:35:40,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2023-12-16 16:35:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2023-12-16 16:35:40,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 16:35:40,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:40,396 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 42, 5, 1, 1, 1, 1, 1] [2023-12-16 16:35:40,412 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 16:35:40,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-12-16 16:35:40,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:40,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:40,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1957541690, now seen corresponding path program 4 times [2023-12-16 16:35:40,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:40,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657926140] [2023-12-16 16:35:40,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 16:35:40,601 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 [2023-12-16 16:35:40,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:40,616 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-12-16 16:35:40,628 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 (10)] Waiting until timeout for monitored process [2023-12-16 16:35:40,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 16:35:40,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:40,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-16 16:35:40,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 597 proven. 2667 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 16:35:41,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 597 proven. 2667 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 16:35:44,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:44,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657926140] [2023-12-16 16:35:44,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657926140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:44,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:44,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2023-12-16 16:35:44,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399132420] [2023-12-16 16:35:44,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:44,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-12-16 16:35:44,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-12-16 16:35:44,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=5634, Unknown=0, NotChecked=0, Total=7656 [2023-12-16 16:35:44,242 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand has 88 states, 88 states have (on average 3.0113636363636362) internal successors, (265), 87 states have internal predecessors, (265), 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) [2023-12-16 16:35:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:57,817 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2023-12-16 16:35:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-16 16:35:57,818 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 3.0113636363636362) internal successors, (265), 87 states have internal predecessors, (265), 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 146 [2023-12-16 16:35:57,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:57,820 INFO L225 Difference]: With dead ends: 300 [2023-12-16 16:35:57,820 INFO L226 Difference]: Without dead ends: 279 [2023-12-16 16:35:57,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=5718, Invalid=11052, Unknown=0, NotChecked=0, Total=16770 [2023-12-16 16:35:57,823 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5848 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 5850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:57,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 91 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5848 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 16:35:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-16 16:35:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-12-16 16:35:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.0179856115107915) internal successors, (283), 278 states have internal predecessors, (283), 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) [2023-12-16 16:35:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 283 transitions. [2023-12-16 16:35:57,848 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 283 transitions. Word has length 146 [2023-12-16 16:35:57,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:57,849 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 283 transitions. [2023-12-16 16:35:57,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 3.0113636363636362) internal successors, (265), 87 states have internal predecessors, (265), 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) [2023-12-16 16:35:57,849 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 283 transitions. [2023-12-16 16:35:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-16 16:35:57,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:57,852 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 86, 5, 1, 1, 1, 1, 1] [2023-12-16 16:35:57,858 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 (10)] Forceful destruction successful, exit code 0 [2023-12-16 16:35:58,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-12-16 16:35:58,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:58,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1315481082, now seen corresponding path program 5 times [2023-12-16 16:35:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:58,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054792084] [2023-12-16 16:35:58,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 16:35:58,064 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 [2023-12-16 16:35:58,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:58,065 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-12-16 16:35:58,066 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 (11)] Waiting until timeout for monitored process [2023-12-16 16:35:58,688 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 92 check-sat command(s) [2023-12-16 16:35:58,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:58,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 144 conjunts are in the unsatisfiable core [2023-12-16 16:35:58,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:36:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 1213 proven. 11137 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 16:36:01,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:36:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 1213 proven. 11137 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 16:36:13,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:36:13,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054792084] [2023-12-16 16:36:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054792084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:36:13,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:36:13,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 89] total 176 [2023-12-16 16:36:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134286151] [2023-12-16 16:36:13,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:36:13,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2023-12-16 16:36:13,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:36:13,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2023-12-16 16:36:13,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8008, Invalid=23144, Unknown=0, NotChecked=0, Total=31152 [2023-12-16 16:36:13,059 INFO L87 Difference]: Start difference. First operand 279 states and 283 transitions. Second operand has 177 states, 177 states have (on average 2.9887005649717513) internal successors, (529), 176 states have internal predecessors, (529), 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) Received shutdown request... [2023-12-16 16:36:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-12-16 16:36:45,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=10486, Invalid=25804, Unknown=0, NotChecked=0, Total=36290 [2023-12-16 16:36:45,725 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22835 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:36:45,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 22851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22835 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-16 16:36:45,727 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:36:45,735 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 (11)] Ended with exit code 0 [2023-12-16 16:36:45,750 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:36:45,750 WARN L340 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 (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:36:45,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2023-12-16 16:36:45,928 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (279states) and FLOYD_HOARE automaton (currently 103 states, 177 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 191 known predicates. [2023-12-16 16:36:45,931 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1] [2023-12-16 16:36:45,933 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:36:45,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:36:45 BoogieIcfgContainer [2023-12-16 16:36:45,934 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:36:45,935 INFO L158 Benchmark]: Toolchain (without parser) took 75012.38ms. Allocated memory was 198.2MB in the beginning and 434.1MB in the end (delta: 235.9MB). Free memory was 158.7MB in the beginning and 277.3MB in the end (delta: -118.5MB). Peak memory consumption was 118.9MB. Max. memory is 8.0GB. [2023-12-16 16:36:45,935 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 161.5MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:36:45,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.06ms. Allocated memory is still 198.2MB. Free memory was 158.7MB in the beginning and 147.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:36:45,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.95ms. Allocated memory is still 198.2MB. Free memory was 147.7MB in the beginning and 146.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 16:36:45,935 INFO L158 Benchmark]: Boogie Preprocessor took 29.69ms. Allocated memory is still 198.2MB. Free memory was 146.1MB in the beginning and 144.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:36:45,935 INFO L158 Benchmark]: RCFGBuilder took 216.51ms. Allocated memory is still 198.2MB. Free memory was 144.5MB in the beginning and 134.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 16:36:45,936 INFO L158 Benchmark]: TraceAbstraction took 74554.23ms. Allocated memory was 198.2MB in the beginning and 434.1MB in the end (delta: 235.9MB). Free memory was 133.0MB in the beginning and 277.3MB in the end (delta: -144.3MB). Peak memory consumption was 92.7MB. Max. memory is 8.0GB. [2023-12-16 16:36:45,936 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 161.5MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.06ms. Allocated memory is still 198.2MB. Free memory was 158.7MB in the beginning and 147.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.95ms. Allocated memory is still 198.2MB. Free memory was 147.7MB in the beginning and 146.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.69ms. Allocated memory is still 198.2MB. Free memory was 146.1MB in the beginning and 144.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 216.51ms. Allocated memory is still 198.2MB. Free memory was 144.5MB in the beginning and 134.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 74554.23ms. Allocated memory was 198.2MB in the beginning and 434.1MB in the end (delta: 235.9MB). Free memory was 133.0MB in the beginning and 277.3MB in the end (delta: -144.3MB). Peak memory consumption was 92.7MB. Max. memory is 8.0GB. * 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 - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was constructing difference of abstraction (279states) and FLOYD_HOARE automaton (currently 103 states, 177 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 191 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.5s, OverallIterations: 10, TraceHistogramMax: 91, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 49.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 7.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187 mSDsluCounter, 234 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30779 IncrementalHoareTripleChecker+Invalid, 30821 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 42 mSDtfsCounter, 30779 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1497 GetRequests, 1048 SyntacticMatches, 0 SemanticMatches, 448 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 58.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=9, InterpolantAutomatonStates: 195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 21.4s InterpolantComputationTime, 731 NumberOfCodeBlocks, 584 NumberOfCodeBlocksAsserted, 107 NumberOfCheckSat, 1400 ConstructedInterpolants, 125 QuantifiedInterpolants, 9492 SizeOfPredicates, 5 NumberOfNonLiveVariables, 760 ConjunctsInSsa, 247 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 9281/38619 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: Timeout Completed graceful shutdown