/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/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:40:00,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:40:01,016 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 22:40:01,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:40:01,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:40:01,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:40:01,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:40:01,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:40:01,051 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:40:01,054 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:40:01,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:40:01,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:40:01,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:40:01,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:40:01,056 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:40:01,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:40:01,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:40:01,057 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:40:01,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:40:01,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:40:01,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:40:01,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:40:01,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:40:01,059 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:40:01,059 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:40:01,059 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:40:01,059 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:40:01,059 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:40:01,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:40:01,060 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:40:01,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:40:01,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:40:01,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:40:01,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:40:01,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:40:01,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:40:01,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:40:01,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:40:01,062 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:40:01,062 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:40:01,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:40:01,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:40:01,062 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:40:01,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:40:01,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:40:01,063 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:40:01,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:40:01,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:40:01,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:40:01,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:40:01,308 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:40:01,308 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:40:01,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2023-12-24 22:40:02,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:40:02,600 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:40:02,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2023-12-24 22:40:02,606 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c25ad91b/28f3040e46274df19a39c01701338f0d/FLAG1328394cd [2023-12-24 22:40:02,619 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c25ad91b/28f3040e46274df19a39c01701338f0d [2023-12-24 22:40:02,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:40:02,622 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:40:02,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:40:02,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:40:02,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:40:02,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669e087d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02, skipping insertion in model container [2023-12-24 22:40:02,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,650 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:40:02,775 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2023-12-24 22:40:02,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:40:02,802 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:40:02,811 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2023-12-24 22:40:02,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:40:02,825 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:40:02,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02 WrapperNode [2023-12-24 22:40:02,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:40:02,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:40:02,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:40:02,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:40:02,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,850 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2023-12-24 22:40:02,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:40:02,851 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:40:02,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:40:02,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:40:02,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,861 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,869 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]. [2023-12-24 22:40:02,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:40:02,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:40:02,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:40:02,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:40:02,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (1/1) ... [2023-12-24 22:40:02,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:40:02,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:40:02,921 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) [2023-12-24 22:40:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:40:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:40:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:40:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:40:02,936 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 [2023-12-24 22:40:03,014 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:40:03,018 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:40:03,236 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:40:03,255 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:40:03,255 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-24 22:40:03,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:40:03 BoogieIcfgContainer [2023-12-24 22:40:03,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:40:03,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:40:03,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:40:03,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:40:03,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:40:02" (1/3) ... [2023-12-24 22:40:03,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0bd6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:40:03, skipping insertion in model container [2023-12-24 22:40:03,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:40:02" (2/3) ... [2023-12-24 22:40:03,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0bd6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:40:03, skipping insertion in model container [2023-12-24 22:40:03,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:40:03" (3/3) ... [2023-12-24 22:40:03,266 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2023-12-24 22:40:03,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:40:03,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:40:03,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:40:03,339 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;@5490c3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:40:03,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:40:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 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) [2023-12-24 22:40:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-24 22:40:03,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:03,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:03,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:03,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:03,366 INFO L85 PathProgramCache]: Analyzing trace with hash 217789248, now seen corresponding path program 1 times [2023-12-24 22:40:03,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:03,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262151354] [2023-12-24 22:40:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:40:03,378 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 [2023-12-24 22:40:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:03,380 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) [2023-12-24 22:40:03,399 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 [2023-12-24 22:40:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:40:03,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 22:40:03,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:03,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:40:03,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262151354] [2023-12-24 22:40:03,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262151354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:40:03,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:40:03,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:40:03,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277048538] [2023-12-24 22:40:03,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:40:03,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 22:40:03,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 22:40:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 22:40:03,505 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:40:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:03,522 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2023-12-24 22:40:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 22:40:03,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-24 22:40:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:03,529 INFO L225 Difference]: With dead ends: 29 [2023-12-24 22:40:03,529 INFO L226 Difference]: Without dead ends: 14 [2023-12-24 22:40:03,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 22:40:03,534 INFO L413 NwaCegarLoop]: 17 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, 17 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 [2023-12-24 22:40:03,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:40:03,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-24 22:40:03,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-24 22:40:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2023-12-24 22:40:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-12-24 22:40:03,557 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2023-12-24 22:40:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:03,557 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-12-24 22:40:03,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:40:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-12-24 22:40:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-24 22:40:03,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:03,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:03,561 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 (2)] Ended with exit code 0 [2023-12-24 22:40:03,760 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 [2023-12-24 22:40:03,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:03,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:03,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1079105914, now seen corresponding path program 1 times [2023-12-24 22:40:03,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:03,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248023945] [2023-12-24 22:40:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:40:03,762 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 [2023-12-24 22:40:03,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:03,763 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) [2023-12-24 22:40:03,764 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 [2023-12-24 22:40:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:40:03,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 22:40:03,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:03,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:40:03,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:03,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248023945] [2023-12-24 22:40:03,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248023945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:40:03,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:40:03,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 22:40:03,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241325530] [2023-12-24 22:40:03,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:40:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 22:40:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 22:40:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 22:40:03,854 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2023-12-24 22:40:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:03,885 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2023-12-24 22:40:03,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 22:40:03,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-12-24 22:40:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:03,886 INFO L225 Difference]: With dead ends: 22 [2023-12-24 22:40:03,886 INFO L226 Difference]: Without dead ends: 20 [2023-12-24 22:40:03,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 22:40:03,888 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:03,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:40:03,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-24 22:40:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2023-12-24 22:40:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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) [2023-12-24 22:40:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-24 22:40:03,893 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2023-12-24 22:40:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:03,893 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-24 22:40:03,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-12-24 22:40:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-24 22:40:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-24 22:40:03,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:03,894 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:03,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-24 22:40:04,096 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 [2023-12-24 22:40:04,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:04,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:04,097 INFO L85 PathProgramCache]: Analyzing trace with hash -858170849, now seen corresponding path program 1 times [2023-12-24 22:40:04,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:04,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573193641] [2023-12-24 22:40:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:40:04,098 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 [2023-12-24 22:40:04,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:04,099 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) [2023-12-24 22:40:04,101 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 [2023-12-24 22:40:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:40:04,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 22:40:04,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:04,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:04,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:04,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573193641] [2023-12-24 22:40:04,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573193641] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:04,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:04,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-24 22:40:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109016641] [2023-12-24 22:40:04,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:04,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 22:40:04,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:04,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 22:40:04,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 22:40:04,224 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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) [2023-12-24 22:40:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:04,361 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2023-12-24 22:40:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 22:40:04,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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 13 [2023-12-24 22:40:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:04,362 INFO L225 Difference]: With dead ends: 49 [2023-12-24 22:40:04,362 INFO L226 Difference]: Without dead ends: 47 [2023-12-24 22:40:04,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:40:04,364 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:04,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 75 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:40:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-24 22:40:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2023-12-24 22:40:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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) [2023-12-24 22:40:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2023-12-24 22:40:04,371 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2023-12-24 22:40:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:04,371 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2023-12-24 22:40:04,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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) [2023-12-24 22:40:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2023-12-24 22:40:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-24 22:40:04,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:04,372 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:04,379 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 (4)] Forceful destruction successful, exit code 0 [2023-12-24 22:40:04,576 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 [2023-12-24 22:40:04,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:04,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1318207955, now seen corresponding path program 1 times [2023-12-24 22:40:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700491332] [2023-12-24 22:40:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:40:04,578 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 [2023-12-24 22:40:04,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:04,579 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) [2023-12-24 22:40:04,581 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 [2023-12-24 22:40:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:40:04,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 22:40:04,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:04,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:40:04,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:04,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700491332] [2023-12-24 22:40:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700491332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:40:04,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:40:04,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 22:40:04,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173982385] [2023-12-24 22:40:04,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:40:04,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 22:40:04,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 22:40:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 22:40:04,687 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:40:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:04,749 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-12-24 22:40:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 22:40:04,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-24 22:40:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:04,750 INFO L225 Difference]: With dead ends: 45 [2023-12-24 22:40:04,751 INFO L226 Difference]: Without dead ends: 34 [2023-12-24 22:40:04,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:40:04,752 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:04,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:40:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-24 22:40:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2023-12-24 22:40:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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) [2023-12-24 22:40:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-12-24 22:40:04,757 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2023-12-24 22:40:04,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:04,757 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-12-24 22:40:04,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:40:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-12-24 22:40:04,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-24 22:40:04,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:04,758 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:04,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 22:40:04,961 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 [2023-12-24 22:40:04,961 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:04,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1554750606, now seen corresponding path program 2 times [2023-12-24 22:40:04,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:04,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426987692] [2023-12-24 22:40:04,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:40:04,965 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 [2023-12-24 22:40:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:04,966 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) [2023-12-24 22:40:04,984 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 [2023-12-24 22:40:05,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:40:05,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:40:05,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 22:40:05,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:05,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:05,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:05,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426987692] [2023-12-24 22:40:05,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426987692] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:05,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:05,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-24 22:40:05,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733556679] [2023-12-24 22:40:05,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:05,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 22:40:05,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:05,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 22:40:05,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:40:05,245 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 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) [2023-12-24 22:40:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:06,188 INFO L93 Difference]: Finished difference Result 149 states and 170 transitions. [2023-12-24 22:40:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-24 22:40:06,189 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 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 19 [2023-12-24 22:40:06,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:06,190 INFO L225 Difference]: With dead ends: 149 [2023-12-24 22:40:06,190 INFO L226 Difference]: Without dead ends: 147 [2023-12-24 22:40:06,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=526, Invalid=1366, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:40:06,192 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 254 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:06,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 211 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:40:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-24 22:40:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 57. [2023-12-24 22:40:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 56 states have internal predecessors, (69), 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) [2023-12-24 22:40:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-12-24 22:40:06,205 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 19 [2023-12-24 22:40:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:06,205 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-12-24 22:40:06,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 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) [2023-12-24 22:40:06,205 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-12-24 22:40:06,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-24 22:40:06,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:06,206 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:06,211 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 (6)] Ended with exit code 0 [2023-12-24 22:40:06,408 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 [2023-12-24 22:40:06,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:06,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1862984443, now seen corresponding path program 1 times [2023-12-24 22:40:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264935994] [2023-12-24 22:40:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:40:06,410 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 [2023-12-24 22:40:06,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:06,411 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) [2023-12-24 22:40:06,412 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 [2023-12-24 22:40:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:40:06,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 22:40:06,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:40:06,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:40:06,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264935994] [2023-12-24 22:40:06,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264935994] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:06,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:06,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-24 22:40:06,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853433696] [2023-12-24 22:40:06,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:06,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 22:40:06,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:06,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 22:40:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-24 22:40:06,565 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2023-12-24 22:40:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:06,674 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2023-12-24 22:40:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 22:40:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 21 [2023-12-24 22:40:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:06,678 INFO L225 Difference]: With dead ends: 77 [2023-12-24 22:40:06,678 INFO L226 Difference]: Without dead ends: 64 [2023-12-24 22:40:06,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:40:06,679 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:06,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 56 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:40:06,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-24 22:40:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2023-12-24 22:40:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 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) [2023-12-24 22:40:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2023-12-24 22:40:06,690 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 21 [2023-12-24 22:40:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:06,691 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2023-12-24 22:40:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2023-12-24 22:40:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2023-12-24 22:40:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-24 22:40:06,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:06,694 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:06,699 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 [2023-12-24 22:40:06,896 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 [2023-12-24 22:40:06,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:06,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash -301823898, now seen corresponding path program 2 times [2023-12-24 22:40:06,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:06,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913492802] [2023-12-24 22:40:06,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:40:06,898 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 [2023-12-24 22:40:06,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:06,899 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) [2023-12-24 22:40:06,900 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 [2023-12-24 22:40:06,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:40:06,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:40:06,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 22:40:06,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:07,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:07,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:07,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913492802] [2023-12-24 22:40:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913492802] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:07,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:07,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-24 22:40:07,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274090821] [2023-12-24 22:40:07,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:07,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 22:40:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 22:40:07,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-24 22:40:07,203 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 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) [2023-12-24 22:40:08,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:08,603 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2023-12-24 22:40:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-24 22:40:08,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 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 25 [2023-12-24 22:40:08,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:08,605 INFO L225 Difference]: With dead ends: 191 [2023-12-24 22:40:08,605 INFO L226 Difference]: Without dead ends: 189 [2023-12-24 22:40:08,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=859, Invalid=2447, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 22:40:08,608 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 303 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:08,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 243 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:40:08,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-24 22:40:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 68. [2023-12-24 22:40:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 67 states have internal predecessors, (82), 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) [2023-12-24 22:40:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2023-12-24 22:40:08,618 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 25 [2023-12-24 22:40:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:08,618 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2023-12-24 22:40:08,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 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) [2023-12-24 22:40:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2023-12-24 22:40:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 22:40:08,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:08,620 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:08,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 22:40:08,822 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 [2023-12-24 22:40:08,823 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:08,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash -466534371, now seen corresponding path program 3 times [2023-12-24 22:40:08,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:08,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775664132] [2023-12-24 22:40:08,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:40:08,824 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 [2023-12-24 22:40:08,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:08,825 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) [2023-12-24 22:40:08,837 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 [2023-12-24 22:40:08,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 22:40:08,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:40:08,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 22:40:08,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:40:08,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:40:09,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:09,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775664132] [2023-12-24 22:40:09,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775664132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:09,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:09,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 22:40:09,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951110690] [2023-12-24 22:40:09,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:09,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 22:40:09,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:09,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 22:40:09,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:40:09,089 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2023-12-24 22:40:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:09,270 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2023-12-24 22:40:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 22:40:09,270 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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 27 [2023-12-24 22:40:09,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:09,270 INFO L225 Difference]: With dead ends: 96 [2023-12-24 22:40:09,270 INFO L226 Difference]: Without dead ends: 79 [2023-12-24 22:40:09,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-12-24 22:40:09,271 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:09,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 127 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:40:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-24 22:40:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2023-12-24 22:40:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 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) [2023-12-24 22:40:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2023-12-24 22:40:09,278 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 27 [2023-12-24 22:40:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:09,279 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2023-12-24 22:40:09,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2023-12-24 22:40:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2023-12-24 22:40:09,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-24 22:40:09,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:09,280 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:09,284 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 [2023-12-24 22:40:09,484 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 [2023-12-24 22:40:09,484 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:09,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:09,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2138204034, now seen corresponding path program 4 times [2023-12-24 22:40:09,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:09,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297090222] [2023-12-24 22:40:09,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:40:09,485 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 [2023-12-24 22:40:09,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:09,486 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) [2023-12-24 22:40:09,489 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 [2023-12-24 22:40:09,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:40:09,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:40:09,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:40:09,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:09,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:09,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:09,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297090222] [2023-12-24 22:40:09,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297090222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:09,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:09,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-24 22:40:09,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334885339] [2023-12-24 22:40:09,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:09,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 22:40:09,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:09,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 22:40:09,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-24 22:40:09,805 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 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) [2023-12-24 22:40:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:11,843 INFO L93 Difference]: Finished difference Result 235 states and 260 transitions. [2023-12-24 22:40:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-24 22:40:11,844 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 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 31 [2023-12-24 22:40:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:11,845 INFO L225 Difference]: With dead ends: 235 [2023-12-24 22:40:11,845 INFO L226 Difference]: Without dead ends: 233 [2023-12-24 22:40:11,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1312, Invalid=4090, Unknown=0, NotChecked=0, Total=5402 [2023-12-24 22:40:11,847 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 370 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:11,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 324 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:40:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-24 22:40:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 83. [2023-12-24 22:40:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 82 states have internal predecessors, (100), 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) [2023-12-24 22:40:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2023-12-24 22:40:11,857 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 31 [2023-12-24 22:40:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:11,857 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2023-12-24 22:40:11,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 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) [2023-12-24 22:40:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2023-12-24 22:40:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 22:40:11,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:11,859 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:11,863 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 [2023-12-24 22:40:12,061 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 [2023-12-24 22:40:12,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:12,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1870604427, now seen corresponding path program 5 times [2023-12-24 22:40:12,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:12,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558726847] [2023-12-24 22:40:12,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:40:12,063 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 [2023-12-24 22:40:12,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:12,064 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) [2023-12-24 22:40:12,101 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 [2023-12-24 22:40:12,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-24 22:40:12,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:40:12,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:40:12,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:12,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:12,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:12,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558726847] [2023-12-24 22:40:12,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558726847] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:12,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:12,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2023-12-24 22:40:12,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739631396] [2023-12-24 22:40:12,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:12,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 22:40:12,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:12,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 22:40:12,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2023-12-24 22:40:12,675 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 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) [2023-12-24 22:40:13,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:13,441 INFO L93 Difference]: Finished difference Result 139 states and 166 transitions. [2023-12-24 22:40:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 22:40:13,442 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 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 33 [2023-12-24 22:40:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:13,443 INFO L225 Difference]: With dead ends: 139 [2023-12-24 22:40:13,443 INFO L226 Difference]: Without dead ends: 101 [2023-12-24 22:40:13,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2023-12-24 22:40:13,444 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 69 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:13,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 219 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 22:40:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-24 22:40:13,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2023-12-24 22:40:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2) internal successors, (96), 80 states have internal predecessors, (96), 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) [2023-12-24 22:40:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2023-12-24 22:40:13,451 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 33 [2023-12-24 22:40:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:13,451 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2023-12-24 22:40:13,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 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) [2023-12-24 22:40:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2023-12-24 22:40:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 22:40:13,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:13,457 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:13,463 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 (11)] Forceful destruction successful, exit code 0 [2023-12-24 22:40:13,662 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 [2023-12-24 22:40:13,662 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:13,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1046206794, now seen corresponding path program 3 times [2023-12-24 22:40:13,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:13,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013197445] [2023-12-24 22:40:13,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:40:13,663 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 [2023-12-24 22:40:13,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:13,664 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-12-24 22:40:13,667 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 (12)] Waiting until timeout for monitored process [2023-12-24 22:40:13,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-24 22:40:13,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:40:13,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 22:40:13,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:13,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:14,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013197445] [2023-12-24 22:40:14,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013197445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:14,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:14,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-24 22:40:14,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45711987] [2023-12-24 22:40:14,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:14,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 22:40:14,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 22:40:14,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2023-12-24 22:40:14,255 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 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) [2023-12-24 22:40:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:27,417 INFO L93 Difference]: Finished difference Result 730 states and 778 transitions. [2023-12-24 22:40:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-12-24 22:40:27,417 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 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 [2023-12-24 22:40:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:27,420 INFO L225 Difference]: With dead ends: 730 [2023-12-24 22:40:27,420 INFO L226 Difference]: Without dead ends: 728 [2023-12-24 22:40:27,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18791 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=9392, Invalid=35340, Unknown=0, NotChecked=0, Total=44732 [2023-12-24 22:40:27,428 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 2485 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:27,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 803 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:40:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-12-24 22:40:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 132. [2023-12-24 22:40:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.1984732824427482) internal successors, (157), 131 states have internal predecessors, (157), 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) [2023-12-24 22:40:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2023-12-24 22:40:27,443 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 35 [2023-12-24 22:40:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:27,444 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2023-12-24 22:40:27,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 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) [2023-12-24 22:40:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2023-12-24 22:40:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-24 22:40:27,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:27,445 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:27,452 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 (12)] Forceful destruction successful, exit code 0 [2023-12-24 22:40:27,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2023-12-24 22:40:27,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:27,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:27,649 INFO L85 PathProgramCache]: Analyzing trace with hash 417649806, now seen corresponding path program 6 times [2023-12-24 22:40:27,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:27,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438605105] [2023-12-24 22:40:27,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:40:27,649 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 [2023-12-24 22:40:27,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:27,650 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-12-24 22:40:27,651 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 (13)] Waiting until timeout for monitored process [2023-12-24 22:40:27,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-12-24 22:40:27,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:40:27,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 22:40:27,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:27,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:28,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:28,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438605105] [2023-12-24 22:40:28,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438605105] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:28,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:28,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 35 [2023-12-24 22:40:28,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661379217] [2023-12-24 22:40:28,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:28,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 22:40:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 22:40:28,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 22:40:28,754 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 36 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 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) [2023-12-24 22:40:36,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:36,777 INFO L93 Difference]: Finished difference Result 329 states and 369 transitions. [2023-12-24 22:40:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-24 22:40:36,778 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 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 41 [2023-12-24 22:40:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:36,779 INFO L225 Difference]: With dead ends: 329 [2023-12-24 22:40:36,779 INFO L226 Difference]: Without dead ends: 327 [2023-12-24 22:40:36,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4384 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3877, Invalid=9695, Unknown=0, NotChecked=0, Total=13572 [2023-12-24 22:40:36,781 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1147 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:36,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 808 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 22:40:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-24 22:40:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 149. [2023-12-24 22:40:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.2027027027027026) internal successors, (178), 148 states have internal predecessors, (178), 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) [2023-12-24 22:40:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2023-12-24 22:40:36,796 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 41 [2023-12-24 22:40:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:36,797 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2023-12-24 22:40:36,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 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) [2023-12-24 22:40:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2023-12-24 22:40:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-24 22:40:36,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:36,798 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:36,804 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 (13)] Ended with exit code 0 [2023-12-24 22:40:37,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-12-24 22:40:37,002 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:37,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:37,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1513020699, now seen corresponding path program 7 times [2023-12-24 22:40:37,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:37,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159066800] [2023-12-24 22:40:37,003 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:40:37,003 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 [2023-12-24 22:40:37,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:37,004 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-12-24 22:40:37,004 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 (14)] Waiting until timeout for monitored process [2023-12-24 22:40:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:40:37,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 22:40:37,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:40:37,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:37,654 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:40:37,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:37,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159066800] [2023-12-24 22:40:37,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159066800] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:37,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:37,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-24 22:40:37,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57897370] [2023-12-24 22:40:37,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:37,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 22:40:37,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:37,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 22:40:37,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-12-24 22:40:37,655 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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) [2023-12-24 22:40:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:40:38,114 INFO L93 Difference]: Finished difference Result 209 states and 251 transitions. [2023-12-24 22:40:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 22:40:38,114 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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 45 [2023-12-24 22:40:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:40:38,115 INFO L225 Difference]: With dead ends: 209 [2023-12-24 22:40:38,115 INFO L226 Difference]: Without dead ends: 172 [2023-12-24 22:40:38,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2023-12-24 22:40:38,117 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 92 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:40:38,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 390 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 22:40:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-24 22:40:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 148. [2023-12-24 22:40:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.1972789115646258) internal successors, (176), 147 states have internal predecessors, (176), 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) [2023-12-24 22:40:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2023-12-24 22:40:38,131 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 45 [2023-12-24 22:40:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:40:38,131 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2023-12-24 22:40:38,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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) [2023-12-24 22:40:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2023-12-24 22:40:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-24 22:40:38,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:40:38,132 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:40:38,139 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 (14)] Ended with exit code 0 [2023-12-24 22:40:38,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 [2023-12-24 22:40:38,333 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:40:38,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:40:38,333 INFO L85 PathProgramCache]: Analyzing trace with hash 394274470, now seen corresponding path program 8 times [2023-12-24 22:40:38,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:40:38,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786699663] [2023-12-24 22:40:38,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:40:38,333 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 [2023-12-24 22:40:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:40:38,334 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-12-24 22:40:38,335 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 (15)] Waiting until timeout for monitored process [2023-12-24 22:40:38,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:40:38,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:40:38,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 22:40:38,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:40:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:38,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:40:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:40:39,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:40:39,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786699663] [2023-12-24 22:40:39,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786699663] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:40:39,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:40:39,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2023-12-24 22:40:39,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014297754] [2023-12-24 22:40:39,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:40:39,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-24 22:40:39,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:40:39,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-24 22:40:39,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 22:40:39,040 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand has 34 states, 34 states have (on average 2.735294117647059) internal successors, (93), 33 states have internal predecessors, (93), 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) [2023-12-24 22:41:00,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:41:00,543 INFO L93 Difference]: Finished difference Result 846 states and 901 transitions. [2023-12-24 22:41:00,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 273 states. [2023-12-24 22:41:00,543 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.735294117647059) internal successors, (93), 33 states have internal predecessors, (93), 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 47 [2023-12-24 22:41:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:41:00,550 INFO L225 Difference]: With dead ends: 846 [2023-12-24 22:41:00,550 INFO L226 Difference]: Without dead ends: 844 [2023-12-24 22:41:00,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32297 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=14958, Invalid=59844, Unknown=0, NotChecked=0, Total=74802 [2023-12-24 22:41:00,557 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 3214 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3214 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:41:00,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3214 Valid, 963 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 22:41:00,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2023-12-24 22:41:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 203. [2023-12-24 22:41:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.1485148514851484) internal successors, (232), 202 states have internal predecessors, (232), 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) [2023-12-24 22:41:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 232 transitions. [2023-12-24 22:41:00,576 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 232 transitions. Word has length 47 [2023-12-24 22:41:00,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:41:00,577 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 232 transitions. [2023-12-24 22:41:00,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.735294117647059) internal successors, (93), 33 states have internal predecessors, (93), 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) [2023-12-24 22:41:00,577 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 232 transitions. [2023-12-24 22:41:00,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-24 22:41:00,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:41:00,577 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:41:00,581 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 (15)] Ended with exit code 0 [2023-12-24 22:41:00,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-12-24 22:41:00,778 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:41:00,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:41:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1116419837, now seen corresponding path program 9 times [2023-12-24 22:41:00,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:41:00,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964520810] [2023-12-24 22:41:00,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:41:00,779 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 [2023-12-24 22:41:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:41:00,779 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-24 22:41:00,782 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 (16)] Waiting until timeout for monitored process [2023-12-24 22:41:00,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-24 22:41:00,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:41:00,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 22:41:00,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:41:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 36 proven. 102 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:41:01,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:41:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 40 proven. 98 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:41:01,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:41:01,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964520810] [2023-12-24 22:41:01,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964520810] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:41:01,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:41:01,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2023-12-24 22:41:01,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640805698] [2023-12-24 22:41:01,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:41:01,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 22:41:01,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:41:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 22:41:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2023-12-24 22:41:01,738 INFO L87 Difference]: Start difference. First operand 203 states and 232 transitions. Second operand has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 31 states have internal predecessors, (90), 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) [2023-12-24 22:41:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:41:02,313 INFO L93 Difference]: Finished difference Result 271 states and 315 transitions. [2023-12-24 22:41:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 22:41:02,313 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 31 states have internal predecessors, (90), 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 51 [2023-12-24 22:41:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:41:02,314 INFO L225 Difference]: With dead ends: 271 [2023-12-24 22:41:02,314 INFO L226 Difference]: Without dead ends: 230 [2023-12-24 22:41:02,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 22:41:02,315 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 151 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:41:02,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 534 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:41:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-24 22:41:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 202. [2023-12-24 22:41:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.144278606965174) internal successors, (230), 201 states have internal predecessors, (230), 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) [2023-12-24 22:41:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 230 transitions. [2023-12-24 22:41:02,330 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 230 transitions. Word has length 51 [2023-12-24 22:41:02,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:41:02,330 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 230 transitions. [2023-12-24 22:41:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.903225806451613) internal successors, (90), 31 states have internal predecessors, (90), 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) [2023-12-24 22:41:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 230 transitions. [2023-12-24 22:41:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-24 22:41:02,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:41:02,331 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:41:02,335 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 (16)] Forceful destruction successful, exit code 0 [2023-12-24 22:41:02,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-12-24 22:41:02,533 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:41:02,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:41:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1935461630, now seen corresponding path program 10 times [2023-12-24 22:41:02,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:41:02,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156715205] [2023-12-24 22:41:02,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:41:02,534 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 [2023-12-24 22:41:02,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:41:02,535 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-12-24 22:41:02,536 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 (17)] Waiting until timeout for monitored process [2023-12-24 22:41:02,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:41:02,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:41:02,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 22:41:02,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:41:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:41:02,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:41:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:41:03,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:41:03,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156715205] [2023-12-24 22:41:03,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156715205] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:41:03,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:41:03,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-12-24 22:41:03,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897994544] [2023-12-24 22:41:03,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:41:03,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 22:41:03,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:41:03,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 22:41:03,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 22:41:03,354 INFO L87 Difference]: Start difference. First operand 202 states and 230 transitions. Second operand has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 35 states have internal predecessors, (105), 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) [2023-12-24 22:41:31,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:41:31,204 INFO L93 Difference]: Finished difference Result 984 states and 1040 transitions. [2023-12-24 22:41:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2023-12-24 22:41:31,205 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 35 states have internal predecessors, (105), 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 53 [2023-12-24 22:41:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:41:31,207 INFO L225 Difference]: With dead ends: 984 [2023-12-24 22:41:31,207 INFO L226 Difference]: Without dead ends: 982 [2023-12-24 22:41:31,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41411 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=18458, Invalid=76098, Unknown=0, NotChecked=0, Total=94556 [2023-12-24 22:41:31,212 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 3559 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3559 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:41:31,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3559 Valid, 1089 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 22:41:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-12-24 22:41:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 225. [2023-12-24 22:41:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.15625) internal successors, (259), 224 states have internal predecessors, (259), 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) [2023-12-24 22:41:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 259 transitions. [2023-12-24 22:41:31,236 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 259 transitions. Word has length 53 [2023-12-24 22:41:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:41:31,236 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 259 transitions. [2023-12-24 22:41:31,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 35 states have internal predecessors, (105), 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) [2023-12-24 22:41:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 259 transitions. [2023-12-24 22:41:31,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-24 22:41:31,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:41:31,237 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:41:31,244 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 (17)] Forceful destruction successful, exit code 0 [2023-12-24 22:41:31,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-12-24 22:41:31,440 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:41:31,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:41:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1036746581, now seen corresponding path program 11 times [2023-12-24 22:41:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:41:31,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297289865] [2023-12-24 22:41:31,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:41:31,441 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 [2023-12-24 22:41:31,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:41:31,441 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-12-24 22:41:31,442 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 (18)] Waiting until timeout for monitored process [2023-12-24 22:41:31,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-24 22:41:31,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:41:31,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 22:41:31,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:41:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 16 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:41:31,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:41:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 20 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:41:32,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:41:32,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297289865] [2023-12-24 22:41:32,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297289865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:41:32,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:41:32,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 37 [2023-12-24 22:41:32,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780931307] [2023-12-24 22:41:32,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:41:32,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-24 22:41:32,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:41:32,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-24 22:41:32,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 22:41:32,840 INFO L87 Difference]: Start difference. First operand 225 states and 259 transitions. Second operand has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 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) [2023-12-24 22:41:34,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:41:34,864 INFO L93 Difference]: Finished difference Result 337 states and 390 transitions. [2023-12-24 22:41:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 22:41:34,865 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 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 57 [2023-12-24 22:41:34,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:41:34,866 INFO L225 Difference]: With dead ends: 337 [2023-12-24 22:41:34,866 INFO L226 Difference]: Without dead ends: 259 [2023-12-24 22:41:34,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=396, Invalid=2466, Unknown=0, NotChecked=0, Total=2862 [2023-12-24 22:41:34,867 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 173 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:41:34,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 743 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 22:41:34,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-24 22:41:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 223. [2023-12-24 22:41:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.1486486486486487) internal successors, (255), 222 states have internal predecessors, (255), 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) [2023-12-24 22:41:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 255 transitions. [2023-12-24 22:41:34,887 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 255 transitions. Word has length 57 [2023-12-24 22:41:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:41:34,888 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 255 transitions. [2023-12-24 22:41:34,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 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) [2023-12-24 22:41:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 255 transitions. [2023-12-24 22:41:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-24 22:41:34,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:41:34,889 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:41:34,894 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 (18)] Forceful destruction successful, exit code 0 [2023-12-24 22:41:35,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-12-24 22:41:35,092 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:41:35,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:41:35,093 INFO L85 PathProgramCache]: Analyzing trace with hash 976058262, now seen corresponding path program 12 times [2023-12-24 22:41:35,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:41:35,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39363686] [2023-12-24 22:41:35,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:41:35,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:41:35,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:41:35,094 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-24 22:41:35,103 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 (19)] Waiting until timeout for monitored process [2023-12-24 22:41:35,190 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2023-12-24 22:41:35,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:41:35,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 22:41:35,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:41:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:41:35,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:41:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:41:36,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:41:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39363686] [2023-12-24 22:41:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39363686] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:41:36,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:41:36,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 41 [2023-12-24 22:41:36,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007427503] [2023-12-24 22:41:36,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:41:36,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-24 22:41:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:41:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-24 22:41:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1255, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 22:41:36,533 INFO L87 Difference]: Start difference. First operand 223 states and 255 transitions. Second operand has 42 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 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) [2023-12-24 22:41:49,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:41:49,732 INFO L93 Difference]: Finished difference Result 516 states and 566 transitions. [2023-12-24 22:41:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-24 22:41:49,733 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 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 59 [2023-12-24 22:41:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:41:49,734 INFO L225 Difference]: With dead ends: 516 [2023-12-24 22:41:49,734 INFO L226 Difference]: Without dead ends: 514 [2023-12-24 22:41:49,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8464 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=6237, Invalid=18255, Unknown=0, NotChecked=0, Total=24492 [2023-12-24 22:41:49,735 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 1154 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:41:49,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1087 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 22:41:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-24 22:41:49,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 217. [2023-12-24 22:41:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.1898148148148149) internal successors, (257), 216 states have internal predecessors, (257), 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) [2023-12-24 22:41:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 257 transitions. [2023-12-24 22:41:49,763 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 257 transitions. Word has length 59 [2023-12-24 22:41:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:41:49,763 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 257 transitions. [2023-12-24 22:41:49,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 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) [2023-12-24 22:41:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 257 transitions. [2023-12-24 22:41:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-24 22:41:49,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:41:49,764 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:41:49,770 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 (19)] Ended with exit code 0 [2023-12-24 22:41:49,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-12-24 22:41:49,968 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:41:49,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:41:49,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2140088722, now seen corresponding path program 13 times [2023-12-24 22:41:49,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:41:49,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106921279] [2023-12-24 22:41:49,968 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:41:49,969 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 [2023-12-24 22:41:49,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:41:49,969 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-12-24 22:41:49,971 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 (20)] Waiting until timeout for monitored process [2023-12-24 22:41:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:41:50,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 22:41:50,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:41:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:41:50,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:41:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:41:50,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:41:50,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106921279] [2023-12-24 22:41:50,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106921279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:41:50,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:41:50,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-24 22:41:50,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094719155] [2023-12-24 22:41:50,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:41:50,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 22:41:50,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:41:50,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 22:41:50,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1173, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:41:50,976 INFO L87 Difference]: Start difference. First operand 217 states and 257 transitions. Second operand has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 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) [2023-12-24 22:42:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:42:36,179 INFO L93 Difference]: Finished difference Result 1116 states and 1174 transitions. [2023-12-24 22:42:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 381 states. [2023-12-24 22:42:36,180 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 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 65 [2023-12-24 22:42:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:42:36,182 INFO L225 Difference]: With dead ends: 1116 [2023-12-24 22:42:36,182 INFO L226 Difference]: Without dead ends: 1114 [2023-12-24 22:42:36,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65246 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=27162, Invalid=118380, Unknown=0, NotChecked=0, Total=145542 [2023-12-24 22:42:36,188 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 4360 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4360 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:42:36,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4360 Valid, 1205 Invalid, 2410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 22:42:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2023-12-24 22:42:36,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 268. [2023-12-24 22:42:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.1535580524344569) internal successors, (308), 267 states have internal predecessors, (308), 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) [2023-12-24 22:42:36,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 308 transitions. [2023-12-24 22:42:36,226 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 308 transitions. Word has length 65 [2023-12-24 22:42:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:42:36,226 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 308 transitions. [2023-12-24 22:42:36,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 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) [2023-12-24 22:42:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 308 transitions. [2023-12-24 22:42:36,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-24 22:42:36,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:42:36,227 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:42:36,232 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 (20)] Forceful destruction successful, exit code 0 [2023-12-24 22:42:36,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-12-24 22:42:36,432 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:42:36,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:42:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -233476923, now seen corresponding path program 14 times [2023-12-24 22:42:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:42:36,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567218591] [2023-12-24 22:42:36,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:42:36,433 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 [2023-12-24 22:42:36,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:42:36,434 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-24 22:42:36,436 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 (21)] Waiting until timeout for monitored process [2023-12-24 22:42:36,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:42:36,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:42:36,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 22:42:36,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:42:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 54 proven. 234 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:42:36,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:42:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 54 proven. 234 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:42:37,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:42:37,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567218591] [2023-12-24 22:42:37,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567218591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:42:37,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:42:37,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2023-12-24 22:42:37,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765350074] [2023-12-24 22:42:37,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:42:37,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-24 22:42:37,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:42:37,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-24 22:42:37,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 22:42:37,944 INFO L87 Difference]: Start difference. First operand 268 states and 308 transitions. Second operand has 42 states, 42 states have (on average 3.0) internal successors, (126), 42 states have internal predecessors, (126), 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) [2023-12-24 22:42:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:42:38,948 INFO L93 Difference]: Finished difference Result 372 states and 433 transitions. [2023-12-24 22:42:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 22:42:38,948 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.0) internal successors, (126), 42 states have internal predecessors, (126), 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 69 [2023-12-24 22:42:38,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:42:38,949 INFO L225 Difference]: With dead ends: 372 [2023-12-24 22:42:38,949 INFO L226 Difference]: Without dead ends: 307 [2023-12-24 22:42:38,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=341, Invalid=2311, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 22:42:38,950 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 278 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:42:38,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 976 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 22:42:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-24 22:42:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 267. [2023-12-24 22:42:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.150375939849624) internal successors, (306), 266 states have internal predecessors, (306), 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) [2023-12-24 22:42:39,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 306 transitions. [2023-12-24 22:42:39,003 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 306 transitions. Word has length 69 [2023-12-24 22:42:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:42:39,003 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 306 transitions. [2023-12-24 22:42:39,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.0) internal successors, (126), 42 states have internal predecessors, (126), 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) [2023-12-24 22:42:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 306 transitions. [2023-12-24 22:42:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-24 22:42:39,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:42:39,004 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:42:39,012 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 (21)] Forceful destruction successful, exit code 0 [2023-12-24 22:42:39,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-12-24 22:42:39,208 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:42:39,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:42:39,209 INFO L85 PathProgramCache]: Analyzing trace with hash -797861498, now seen corresponding path program 15 times [2023-12-24 22:42:39,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:42:39,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34421205] [2023-12-24 22:42:39,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:42:39,209 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 [2023-12-24 22:42:39,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:42:39,211 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-24 22:42:39,241 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 (22)] Waiting until timeout for monitored process [2023-12-24 22:42:39,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-12-24 22:42:39,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:42:39,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 22:42:39,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:42:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:42:39,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:42:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:42:41,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:42:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34421205] [2023-12-24 22:42:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34421205] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:42:41,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:42:41,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 45 [2023-12-24 22:42:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549180470] [2023-12-24 22:42:41,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:42:41,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-24 22:42:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:42:41,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-24 22:42:41,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1517, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 22:42:41,033 INFO L87 Difference]: Start difference. First operand 267 states and 306 transitions. Second operand has 46 states, 46 states have (on average 3.0652173913043477) internal successors, (141), 45 states have internal predecessors, (141), 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) [2023-12-24 22:43:00,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:43:00,796 INFO L93 Difference]: Finished difference Result 654 states and 711 transitions. [2023-12-24 22:43:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-12-24 22:43:00,797 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.0652173913043477) internal successors, (141), 45 states have internal predecessors, (141), 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 71 [2023-12-24 22:43:00,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:43:00,798 INFO L225 Difference]: With dead ends: 654 [2023-12-24 22:43:00,798 INFO L226 Difference]: Without dead ends: 652 [2023-12-24 22:43:00,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14150 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=9018, Invalid=29988, Unknown=0, NotChecked=0, Total=39006 [2023-12-24 22:43:00,800 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1674 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:43:00,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 1414 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:43:00,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-12-24 22:43:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 284. [2023-12-24 22:43:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.1943462897526502) internal successors, (338), 283 states have internal predecessors, (338), 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) [2023-12-24 22:43:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 338 transitions. [2023-12-24 22:43:00,840 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 338 transitions. Word has length 71 [2023-12-24 22:43:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:43:00,840 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 338 transitions. [2023-12-24 22:43:00,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.0652173913043477) internal successors, (141), 45 states have internal predecessors, (141), 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) [2023-12-24 22:43:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 338 transitions. [2023-12-24 22:43:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-24 22:43:00,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:43:00,841 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:43:00,851 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 (22)] Forceful destruction successful, exit code 0 [2023-12-24 22:43:01,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-12-24 22:43:01,046 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:43:01,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:43:01,046 INFO L85 PathProgramCache]: Analyzing trace with hash -994638795, now seen corresponding path program 4 times [2023-12-24 22:43:01,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:43:01,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645535794] [2023-12-24 22:43:01,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:43:01,046 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 [2023-12-24 22:43:01,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:43:01,047 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-24 22:43:01,048 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 (23)] Waiting until timeout for monitored process [2023-12-24 22:43:01,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:43:01,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:43:01,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 22:43:01,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:43:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:01,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:43:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:43:03,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:43:03,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645535794] [2023-12-24 22:43:03,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645535794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:43:03,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:43:03,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2023-12-24 22:43:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202412212] [2023-12-24 22:43:03,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:43:03,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-24 22:43:03,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:43:03,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-24 22:43:03,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1158, Invalid=3398, Unknown=0, NotChecked=0, Total=4556 [2023-12-24 22:43:03,457 INFO L87 Difference]: Start difference. First operand 284 states and 338 transitions. Second operand has 68 states, 68 states have (on average 2.1323529411764706) internal successors, (145), 67 states have internal predecessors, (145), 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) [2023-12-24 22:49:56,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:49:56,966 INFO L93 Difference]: Finished difference Result 3822 states and 3937 transitions. [2023-12-24 22:49:56,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1123 states. [2023-12-24 22:49:56,967 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.1323529411764706) internal successors, (145), 67 states have internal predecessors, (145), 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 73 [2023-12-24 22:49:56,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:49:56,975 INFO L225 Difference]: With dead ends: 3822 [2023-12-24 22:49:56,976 INFO L226 Difference]: Without dead ends: 3820 [2023-12-24 22:49:57,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617854 ImplicationChecksByTransitivity, 405.1s TimeCoverageRelationStatistics Valid=209614, Invalid=1052638, Unknown=0, NotChecked=0, Total=1262252 [2023-12-24 22:49:57,063 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 30879 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 4437 mSolverCounterSat, 6654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30879 SdHoareTripleChecker+Valid, 4212 SdHoareTripleChecker+Invalid, 11091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6654 IncrementalHoareTripleChecker+Valid, 4437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:49:57,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30879 Valid, 4212 Invalid, 11091 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6654 Valid, 4437 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-24 22:49:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2023-12-24 22:49:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 445. [2023-12-24 22:49:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1666666666666667) internal successors, (518), 444 states have internal predecessors, (518), 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) [2023-12-24 22:49:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 518 transitions. [2023-12-24 22:49:57,163 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 518 transitions. Word has length 73 [2023-12-24 22:49:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:49:57,164 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 518 transitions. [2023-12-24 22:49:57,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.1323529411764706) internal successors, (145), 67 states have internal predecessors, (145), 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) [2023-12-24 22:49:57,164 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 518 transitions. [2023-12-24 22:49:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-24 22:49:57,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:49:57,165 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:49:57,173 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 (23)] Forceful destruction successful, exit code 0 [2023-12-24 22:49:57,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-12-24 22:49:57,370 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:49:57,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:49:57,370 INFO L85 PathProgramCache]: Analyzing trace with hash -315067939, now seen corresponding path program 16 times [2023-12-24 22:49:57,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:49:57,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370467886] [2023-12-24 22:49:57,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:49:57,370 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 [2023-12-24 22:49:57,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:49:57,371 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-24 22:49:57,373 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 (24)] Waiting until timeout for monitored process [2023-12-24 22:49:57,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:49:57,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:49:57,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 22:49:57,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:49:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 60 proven. 290 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:49:57,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:49:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 60 proven. 290 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-24 22:49:59,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:49:59,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370467886] [2023-12-24 22:49:59,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370467886] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:49:59,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:49:59,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2023-12-24 22:49:59,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6361764] [2023-12-24 22:49:59,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:49:59,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-24 22:49:59,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:49:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-24 22:49:59,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1849, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 22:49:59,209 INFO L87 Difference]: Start difference. First operand 445 states and 518 transitions. Second operand has 46 states, 46 states have (on average 3.0) internal successors, (138), 46 states have internal predecessors, (138), 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) [2023-12-24 22:50:00,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:50:00,467 INFO L93 Difference]: Finished difference Result 565 states and 661 transitions. [2023-12-24 22:50:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 22:50:00,468 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.0) internal successors, (138), 46 states have internal predecessors, (138), 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 75 [2023-12-24 22:50:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:50:00,469 INFO L225 Difference]: With dead ends: 565 [2023-12-24 22:50:00,469 INFO L226 Difference]: Without dead ends: 488 [2023-12-24 22:50:00,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=397, Invalid=2795, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 22:50:00,470 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 265 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:50:00,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1203 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:50:00,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-24 22:50:00,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 444. [2023-12-24 22:50:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.164785553047404) internal successors, (516), 443 states have internal predecessors, (516), 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) [2023-12-24 22:50:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 516 transitions. [2023-12-24 22:50:00,550 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 516 transitions. Word has length 75 [2023-12-24 22:50:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:50:00,550 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 516 transitions. [2023-12-24 22:50:00,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.0) internal successors, (138), 46 states have internal predecessors, (138), 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) [2023-12-24 22:50:00,550 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 516 transitions. [2023-12-24 22:50:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-24 22:50:00,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:50:00,551 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:50:00,559 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 (24)] Forceful destruction successful, exit code 0 [2023-12-24 22:50:00,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-24 22:50:00,756 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:50:00,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:50:00,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1762945845, now seen corresponding path program 17 times [2023-12-24 22:50:00,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:50:00,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658339928] [2023-12-24 22:50:00,757 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:50:00,757 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 [2023-12-24 22:50:00,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:50:00,758 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-24 22:50:00,759 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 (25)] Waiting until timeout for monitored process [2023-12-24 22:50:00,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-24 22:50:00,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:50:00,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 22:50:00,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:50:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 24 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:50:01,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:50:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:50:03,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:50:03,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658339928] [2023-12-24 22:50:03,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658339928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:50:03,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:50:03,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28] total 53 [2023-12-24 22:50:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410909300] [2023-12-24 22:50:03,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:50:03,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-24 22:50:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:50:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-24 22:50:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=2445, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 22:50:03,446 INFO L87 Difference]: Start difference. First operand 444 states and 516 transitions. Second operand has 53 states, 53 states have (on average 2.9245283018867925) internal successors, (155), 53 states have internal predecessors, (155), 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) [2023-12-24 22:50:07,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:50:07,340 INFO L93 Difference]: Finished difference Result 624 states and 723 transitions. [2023-12-24 22:50:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-24 22:50:07,340 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.9245283018867925) internal successors, (155), 53 states have internal predecessors, (155), 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 81 [2023-12-24 22:50:07,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:50:07,342 INFO L225 Difference]: With dead ends: 624 [2023-12-24 22:50:07,342 INFO L226 Difference]: Without dead ends: 494 [2023-12-24 22:50:07,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=706, Invalid=5300, Unknown=0, NotChecked=0, Total=6006 [2023-12-24 22:50:07,343 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 354 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:50:07,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1793 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 22:50:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-24 22:50:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 442. [2023-12-24 22:50:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.1609977324263039) internal successors, (512), 441 states have internal predecessors, (512), 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) [2023-12-24 22:50:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 512 transitions. [2023-12-24 22:50:07,399 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 512 transitions. Word has length 81 [2023-12-24 22:50:07,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:50:07,399 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 512 transitions. [2023-12-24 22:50:07,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.9245283018867925) internal successors, (155), 53 states have internal predecessors, (155), 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) [2023-12-24 22:50:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 512 transitions. [2023-12-24 22:50:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-24 22:50:07,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:50:07,401 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:50:07,408 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 (25)] Forceful destruction successful, exit code 0 [2023-12-24 22:50:07,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-12-24 22:50:07,608 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:50:07,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:50:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2081177220, now seen corresponding path program 18 times [2023-12-24 22:50:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:50:07,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954872020] [2023-12-24 22:50:07,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:50:07,609 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 [2023-12-24 22:50:07,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:50:07,609 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-24 22:50:07,611 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 (26)] Waiting until timeout for monitored process [2023-12-24 22:50:07,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2023-12-24 22:50:07,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:50:07,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-24 22:50:07,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:50:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 0 proven. 1262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:50:08,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:50:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 0 proven. 1262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:50:11,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:50:11,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954872020] [2023-12-24 22:50:11,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954872020] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:50:11,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:50:11,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 41] total 79 [2023-12-24 22:50:11,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180438752] [2023-12-24 22:50:11,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:50:11,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-24 22:50:11,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:50:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-24 22:50:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1673, Invalid=4647, Unknown=0, NotChecked=0, Total=6320 [2023-12-24 22:50:11,957 INFO L87 Difference]: Start difference. First operand 442 states and 512 transitions. Second operand has 80 states, 80 states have (on average 2.1125) internal successors, (169), 79 states have internal predecessors, (169), 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) [2023-12-24 22:51:37,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:37,439 INFO L93 Difference]: Finished difference Result 1040 states and 1149 transitions. [2023-12-24 22:51:37,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2023-12-24 22:51:37,440 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.1125) internal successors, (169), 79 states have internal predecessors, (169), 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 85 [2023-12-24 22:51:37,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:37,442 INFO L225 Difference]: With dead ends: 1040 [2023-12-24 22:51:37,442 INFO L226 Difference]: Without dead ends: 1038 [2023-12-24 22:51:37,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30013 ImplicationChecksByTransitivity, 85.4s TimeCoverageRelationStatistics Valid=23842, Invalid=61714, Unknown=0, NotChecked=0, Total=85556 [2023-12-24 22:51:37,446 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 5832 mSDsluCounter, 4519 mSDsCounter, 0 mSdLazyCounter, 5353 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5832 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 6132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 5353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:37,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5832 Valid, 4646 Invalid, 6132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 5353 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-24 22:51:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-12-24 22:51:37,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 499. [2023-12-24 22:51:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.1526104417670682) internal successors, (574), 498 states have internal predecessors, (574), 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) [2023-12-24 22:51:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 574 transitions. [2023-12-24 22:51:37,556 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 574 transitions. Word has length 85 [2023-12-24 22:51:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:37,557 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 574 transitions. [2023-12-24 22:51:37,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.1125) internal successors, (169), 79 states have internal predecessors, (169), 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) [2023-12-24 22:51:37,557 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 574 transitions. [2023-12-24 22:51:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-24 22:51:37,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:37,558 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:37,562 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 (26)] Ended with exit code 0 [2023-12-24 22:51:37,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-12-24 22:51:37,763 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:37,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:37,763 INFO L85 PathProgramCache]: Analyzing trace with hash -323409644, now seen corresponding path program 19 times [2023-12-24 22:51:37,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:37,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942611201] [2023-12-24 22:51:37,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:51:37,763 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 [2023-12-24 22:51:37,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:37,764 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-24 22:51:37,765 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 (27)] Waiting until timeout for monitored process [2023-12-24 22:51:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:51:37,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 22:51:37,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:38,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:40,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942611201] [2023-12-24 22:51:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942611201] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:40,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:40,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77 [2023-12-24 22:51:40,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813939555] [2023-12-24 22:51:40,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:40,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-24 22:51:40,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:40,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-24 22:51:40,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1520, Invalid=4486, Unknown=0, NotChecked=0, Total=6006 [2023-12-24 22:51:40,918 INFO L87 Difference]: Start difference. First operand 499 states and 574 transitions. Second operand has 78 states, 78 states have (on average 2.3205128205128207) internal successors, (181), 77 states have internal predecessors, (181), 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... [2023-12-24 22:54:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 324 states. [2023-12-24 22:54:07,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48760 ImplicationChecksByTransitivity, 143.1s TimeCoverageRelationStatistics Valid=33658, Invalid=97748, Unknown=0, NotChecked=0, Total=131406 [2023-12-24 22:54:07,044 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 15415 mSDsluCounter, 4688 mSDsCounter, 0 mSdLazyCounter, 5562 mSolverCounterSat, 3671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15415 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 9233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3671 IncrementalHoareTripleChecker+Valid, 5562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:54:07,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15415 Valid, 4817 Invalid, 9233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3671 Valid, 5562 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-24 22:54:07,046 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 22:54:07,050 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 (27)] Ended with exit code 0 [2023-12-24 22:54:07,075 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 (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:54:07,075 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 [2023-12-24 22:54:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-12-24 22:54:07,247 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (499states) and FLOYD_HOARE automaton (currently 324 states, 78 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 363 known predicates. [2023-12-24 22:54:07,252 INFO L445 BasicCegarLoop]: Path program histogram: [19, 4, 1, 1, 1] [2023-12-24 22:54:07,254 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 22:54:07,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:54:07 BoogieIcfgContainer [2023-12-24 22:54:07,257 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 22:54:07,258 INFO L158 Benchmark]: Toolchain (without parser) took 844635.18ms. Allocated memory was 185.6MB in the beginning and 759.2MB in the end (delta: 573.6MB). Free memory was 138.1MB in the beginning and 395.1MB in the end (delta: -257.0MB). Peak memory consumption was 317.2MB. Max. memory is 8.0GB. [2023-12-24 22:54:07,258 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 22:54:07,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.12ms. Allocated memory is still 185.6MB. Free memory was 138.1MB in the beginning and 126.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 22:54:07,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.20ms. Allocated memory is still 185.6MB. Free memory was 126.7MB in the beginning and 125.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 22:54:07,258 INFO L158 Benchmark]: Boogie Preprocessor took 30.33ms. Allocated memory is still 185.6MB. Free memory was 125.1MB in the beginning and 123.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 22:54:07,260 INFO L158 Benchmark]: RCFGBuilder took 373.40ms. Allocated memory is still 185.6MB. Free memory was 123.4MB in the beginning and 111.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 22:54:07,261 INFO L158 Benchmark]: TraceAbstraction took 843999.79ms. Allocated memory was 185.6MB in the beginning and 759.2MB in the end (delta: 573.6MB). Free memory was 111.5MB in the beginning and 395.1MB in the end (delta: -283.7MB). Peak memory consumption was 290.9MB. Max. memory is 8.0GB. [2023-12-24 22:54:07,268 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.12ms. Allocated memory is still 185.6MB. Free memory was 138.1MB in the beginning and 126.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.20ms. Allocated memory is still 185.6MB. Free memory was 126.7MB in the beginning and 125.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.33ms. Allocated memory is still 185.6MB. Free memory was 125.1MB in the beginning and 123.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 373.40ms. Allocated memory is still 185.6MB. Free memory was 123.4MB in the beginning and 111.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 843999.79ms. Allocated memory was 185.6MB in the beginning and 759.2MB in the end (delta: 573.6MB). Free memory was 111.5MB in the beginning and 395.1MB in the end (delta: -283.7MB). Peak memory consumption was 290.9MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (499states) and FLOYD_HOARE automaton (currently 324 states, 78 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 363 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 843.9s, OverallIterations: 26, TraceHistogramMax: 37, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 809.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72124 SdHoareTripleChecker+Valid, 30.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72124 mSDsluCounter, 28014 SdHoareTripleChecker+Invalid, 26.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26786 mSDsCounter, 15653 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33500 IncrementalHoareTripleChecker+Invalid, 49153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15653 mSolverCounterUnsat, 1228 mSDtfsCounter, 33500 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5485 GetRequests, 1535 SyntacticMatches, 0 SemanticMatches, 3949 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885918 ImplicationChecksByTransitivity, 794.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=499occurred in iteration=25, InterpolantAutomatonStates: 3358, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 25 MinimizatonAttempts, 8244 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 27.0s InterpolantComputationTime, 1202 NumberOfCodeBlocks, 1202 NumberOfCodeBlocksAsserted, 158 NumberOfCheckSat, 2320 ConstructedInterpolants, 0 QuantifiedInterpolants, 11024 SizeOfPredicates, 48 NumberOfNonLiveVariables, 2947 ConjunctsInSsa, 479 ConjunctsInUnsatCore, 49 InterpolantComputations, 3 PerfectInterpolantSequences, 534/14310 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