/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/array-tiling/mlceu2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 17:39:27,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 17:39:27,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 17:39:27,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 17:39:27,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 17:39:27,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 17:39:27,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 17:39:27,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 17:39:27,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 17:39:27,150 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 17:39:27,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 17:39:27,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 17:39:27,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 17:39:27,153 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 17:39:27,153 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 17:39:27,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 17:39:27,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 17:39:27,153 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 17:39:27,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 17:39:27,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 17:39:27,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 17:39:27,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 17:39:27,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 17:39:27,155 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 17:39:27,155 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 17:39:27,155 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 17:39:27,155 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 17:39:27,155 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 17:39:27,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 17:39:27,156 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 17:39:27,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 17:39:27,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 17:39:27,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 17:39:27,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 17:39:27,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:39:27,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 17:39:27,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 17:39:27,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 17:39:27,157 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 17:39:27,157 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 17:39:27,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 17:39:27,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 17:39:27,158 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 17:39:27,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 17:39:27,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 17:39:27,158 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 17:39:27,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 17:39:27,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 17:39:27,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 17:39:27,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 17:39:27,351 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 17:39:27,353 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 17:39:27,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mlceu2.c [2023-12-21 17:39:28,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 17:39:28,573 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 17:39:28,574 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu2.c [2023-12-21 17:39:28,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f306424/bed640e89b9344a69ffe4aef6d222853/FLAG8cc2e2034 [2023-12-21 17:39:29,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f306424/bed640e89b9344a69ffe4aef6d222853 [2023-12-21 17:39:29,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 17:39:29,006 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 17:39:29,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 17:39:29,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 17:39:29,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 17:39:29,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224a8556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29, skipping insertion in model container [2023-12-21 17:39:29,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,028 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 17:39:29,145 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu2.c[397,410] [2023-12-21 17:39:29,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:39:29,167 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 17:39:29,179 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu2.c[397,410] [2023-12-21 17:39:29,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:39:29,195 INFO L206 MainTranslator]: Completed translation [2023-12-21 17:39:29,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29 WrapperNode [2023-12-21 17:39:29,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 17:39:29,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 17:39:29,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 17:39:29,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 17:39:29,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,222 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-12-21 17:39:29,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 17:39:29,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 17:39:29,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 17:39:29,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 17:39:29,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,240 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-21 17:39:29,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 17:39:29,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 17:39:29,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 17:39:29,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 17:39:29,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (1/1) ... [2023-12-21 17:39:29,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:39:29,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 17:39:29,272 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) [2023-12-21 17:39:29,283 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 [2023-12-21 17:39:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 17:39:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 17:39:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 17:39:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-21 17:39:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 17:39:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 17:39:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 17:39:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 17:39:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 17:39:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 17:39:29,361 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 17:39:29,362 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 17:39:29,474 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 17:39:29,498 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 17:39:29,498 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 17:39:29,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:39:29 BoogieIcfgContainer [2023-12-21 17:39:29,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 17:39:29,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 17:39:29,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 17:39:29,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 17:39:29,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:39:29" (1/3) ... [2023-12-21 17:39:29,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b849657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:39:29, skipping insertion in model container [2023-12-21 17:39:29,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:29" (2/3) ... [2023-12-21 17:39:29,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b849657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:39:29, skipping insertion in model container [2023-12-21 17:39:29,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:39:29" (3/3) ... [2023-12-21 17:39:29,508 INFO L112 eAbstractionObserver]: Analyzing ICFG mlceu2.c [2023-12-21 17:39:29,519 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 17:39:29,519 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 17:39:29,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 17:39:29,557 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;@44d9f41d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 17:39:29,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 17:39:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 17:39:29,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:29,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:29,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:29,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:29,568 INFO L85 PathProgramCache]: Analyzing trace with hash 955122675, now seen corresponding path program 1 times [2023-12-21 17:39:29,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:29,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652428637] [2023-12-21 17:39:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:29,578 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 [2023-12-21 17:39:29,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:29,580 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) [2023-12-21 17:39:29,584 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 [2023-12-21 17:39:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:29,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 17:39:29,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:29,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:39:29,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:29,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652428637] [2023-12-21 17:39:29,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652428637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:39:29,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:39:29,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 17:39:29,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360601724] [2023-12-21 17:39:29,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:39:29,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 17:39:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 17:39:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:39:29,664 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-12-21 17:39:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:29,682 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2023-12-21 17:39:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 17:39:29,684 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-12-21 17:39:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:29,688 INFO L225 Difference]: With dead ends: 23 [2023-12-21 17:39:29,688 INFO L226 Difference]: Without dead ends: 11 [2023-12-21 17:39:29,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:39:29,716 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:29,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:39:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-21 17:39:29,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-21 17:39:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-21 17:39:29,735 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2023-12-21 17:39:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:29,735 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-21 17:39:29,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-12-21 17:39:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-21 17:39:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 17:39:29,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:29,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:29,738 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 [2023-12-21 17:39:29,937 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 [2023-12-21 17:39:29,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:29,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:29,939 INFO L85 PathProgramCache]: Analyzing trace with hash 944963944, now seen corresponding path program 1 times [2023-12-21 17:39:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:29,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356861831] [2023-12-21 17:39:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:29,939 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 [2023-12-21 17:39:29,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:29,940 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) [2023-12-21 17:39:29,942 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 [2023-12-21 17:39:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:29,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 17:39:29,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:30,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:39:30,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356861831] [2023-12-21 17:39:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356861831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:39:30,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:39:30,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 17:39:30,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087484222] [2023-12-21 17:39:30,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:39:30,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 17:39:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:30,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 17:39:30,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 17:39:30,044 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-21 17:39:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:30,083 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-12-21 17:39:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 17:39:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-12-21 17:39:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:30,084 INFO L225 Difference]: With dead ends: 23 [2023-12-21 17:39:30,084 INFO L226 Difference]: Without dead ends: 14 [2023-12-21 17:39:30,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 17:39:30,085 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:30,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:39:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-21 17:39:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-12-21 17:39:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) [2023-12-21 17:39:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-21 17:39:30,089 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2023-12-21 17:39:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:30,089 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-21 17:39:30,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-21 17:39:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-21 17:39:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 17:39:30,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:30,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:30,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:30,292 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 [2023-12-21 17:39:30,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:30,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:30,293 INFO L85 PathProgramCache]: Analyzing trace with hash -273421, now seen corresponding path program 1 times [2023-12-21 17:39:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:30,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083983364] [2023-12-21 17:39:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:30,293 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 [2023-12-21 17:39:30,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:30,297 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) [2023-12-21 17:39:30,315 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 [2023-12-21 17:39:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:30,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 17:39:30,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:30,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 17:39:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:30,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:30,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-12-21 17:39:30,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-12-21 17:39:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:30,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083983364] [2023-12-21 17:39:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083983364] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:30,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:30,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-21 17:39:30,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364396393] [2023-12-21 17:39:30,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:30,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 17:39:30,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 17:39:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 17:39:30,545 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2023-12-21 17:39:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:30,678 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2023-12-21 17:39:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 17:39:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 10 [2023-12-21 17:39:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:30,680 INFO L225 Difference]: With dead ends: 34 [2023-12-21 17:39:30,680 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 17:39:30,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-21 17:39:30,683 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:30,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:39:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 17:39:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 19. [2023-12-21 17:39:30,691 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) [2023-12-21 17:39:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-21 17:39:30,692 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2023-12-21 17:39:30,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:30,692 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-21 17:39:30,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2023-12-21 17:39:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-21 17:39:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 17:39:30,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:30,693 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:30,700 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 [2023-12-21 17:39:30,897 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 [2023-12-21 17:39:30,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:30,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash 449754462, now seen corresponding path program 1 times [2023-12-21 17:39:30,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:30,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024754721] [2023-12-21 17:39:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:30,899 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 [2023-12-21 17:39:30,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:30,900 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) [2023-12-21 17:39:30,901 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 [2023-12-21 17:39:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:30,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 17:39:30,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 17:39:30,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 17:39:31,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024754721] [2023-12-21 17:39:31,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024754721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:31,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:31,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 17:39:31,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171145710] [2023-12-21 17:39:31,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:31,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 17:39:31,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:31,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 17:39:31,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 17:39:31,053 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2023-12-21 17:39:31,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:31,130 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2023-12-21 17:39:31,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 17:39:31,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 [2023-12-21 17:39:31,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:31,132 INFO L225 Difference]: With dead ends: 35 [2023-12-21 17:39:31,132 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 17:39:31,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-21 17:39:31,133 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:31,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 15 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:39:31,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 17:39:31,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-12-21 17:39:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2023-12-21 17:39:31,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-12-21 17:39:31,141 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2023-12-21 17:39:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:31,142 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-12-21 17:39:31,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2023-12-21 17:39:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-12-21 17:39:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 17:39:31,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:31,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:31,145 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 [2023-12-21 17:39:31,345 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 [2023-12-21 17:39:31,345 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:31,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:31,346 INFO L85 PathProgramCache]: Analyzing trace with hash 437531561, now seen corresponding path program 2 times [2023-12-21 17:39:31,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:31,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136224646] [2023-12-21 17:39:31,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:39:31,346 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 [2023-12-21 17:39:31,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:31,347 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) [2023-12-21 17:39:31,349 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 [2023-12-21 17:39:31,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:39:31,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:31,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 17:39:31,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:31,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:31,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:31,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:31,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:31,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136224646] [2023-12-21 17:39:31,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136224646] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:31,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:31,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-21 17:39:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029406434] [2023-12-21 17:39:31,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:31,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 17:39:31,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 17:39:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-21 17:39:31,601 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2023-12-21 17:39:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:31,827 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2023-12-21 17:39:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 17:39:31,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 16 [2023-12-21 17:39:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:31,828 INFO L225 Difference]: With dead ends: 45 [2023-12-21 17:39:31,828 INFO L226 Difference]: Without dead ends: 43 [2023-12-21 17:39:31,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-12-21 17:39:31,829 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:31,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 66 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:39:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-21 17:39:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 25. [2023-12-21 17:39:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2023-12-21 17:39:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-12-21 17:39:31,833 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2023-12-21 17:39:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:31,833 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-12-21 17:39:31,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2023-12-21 17:39:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-12-21 17:39:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 17:39:31,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:31,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:31,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:32,034 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 [2023-12-21 17:39:32,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:32,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash 746715473, now seen corresponding path program 1 times [2023-12-21 17:39:32,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:32,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453944608] [2023-12-21 17:39:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:32,036 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 [2023-12-21 17:39:32,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:32,037 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) [2023-12-21 17:39:32,037 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 [2023-12-21 17:39:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:32,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 17:39:32,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:32,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:32,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:32,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453944608] [2023-12-21 17:39:32,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453944608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:32,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:32,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-21 17:39:32,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077496586] [2023-12-21 17:39:32,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:32,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 17:39:32,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 17:39:32,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 17:39:32,126 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2023-12-21 17:39:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:32,264 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2023-12-21 17:39:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 17:39:32,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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 16 [2023-12-21 17:39:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:32,266 INFO L225 Difference]: With dead ends: 81 [2023-12-21 17:39:32,267 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 17:39:32,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 17:39:32,267 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:32,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 41 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:39:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 17:39:32,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 37. [2023-12-21 17:39:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 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) [2023-12-21 17:39:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-12-21 17:39:32,273 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 16 [2023-12-21 17:39:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:32,274 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-12-21 17:39:32,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2023-12-21 17:39:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-12-21 17:39:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 17:39:32,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:32,274 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:32,278 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 [2023-12-21 17:39:32,479 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 [2023-12-21 17:39:32,481 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:32,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:32,482 INFO L85 PathProgramCache]: Analyzing trace with hash -717704728, now seen corresponding path program 3 times [2023-12-21 17:39:32,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:32,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643855762] [2023-12-21 17:39:32,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:39:32,482 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 [2023-12-21 17:39:32,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:32,483 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) [2023-12-21 17:39:32,484 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 [2023-12-21 17:39:32,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 17:39:32,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:32,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 17:39:32,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:32,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:32,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643855762] [2023-12-21 17:39:32,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643855762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:32,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:32,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-21 17:39:32,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896466187] [2023-12-21 17:39:32,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:32,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 17:39:32,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 17:39:32,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-12-21 17:39:32,847 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) [2023-12-21 17:39:33,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:33,208 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2023-12-21 17:39:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 17:39:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) Word has length 19 [2023-12-21 17:39:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:33,209 INFO L225 Difference]: With dead ends: 61 [2023-12-21 17:39:33,209 INFO L226 Difference]: Without dead ends: 48 [2023-12-21 17:39:33,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2023-12-21 17:39:33,210 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 62 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:33,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 17:39:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-21 17:39:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2023-12-21 17:39:33,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 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) [2023-12-21 17:39:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-12-21 17:39:33,215 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 19 [2023-12-21 17:39:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:33,215 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-12-21 17:39:33,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) [2023-12-21 17:39:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-12-21 17:39:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 17:39:33,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:33,216 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:33,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-21 17:39:33,418 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 [2023-12-21 17:39:33,418 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:33,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1566247923, now seen corresponding path program 4 times [2023-12-21 17:39:33,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:33,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468890172] [2023-12-21 17:39:33,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:39:33,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:39:33,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:33,421 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) [2023-12-21 17:39:33,421 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 [2023-12-21 17:39:33,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:39:33,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:33,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 17:39:33,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:33,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:33,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:33,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:33,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:33,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468890172] [2023-12-21 17:39:33,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468890172] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:33,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:33,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-12-21 17:39:33,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374624650] [2023-12-21 17:39:33,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:33,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 17:39:33,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 17:39:33,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-21 17:39:33,739 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 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) [2023-12-21 17:39:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:34,061 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2023-12-21 17:39:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 17:39:34,061 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 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 22 [2023-12-21 17:39:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:34,062 INFO L225 Difference]: With dead ends: 64 [2023-12-21 17:39:34,062 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 17:39:34,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2023-12-21 17:39:34,062 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 35 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:34,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 111 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 17:39:34,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 17:39:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 40. [2023-12-21 17:39:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 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) [2023-12-21 17:39:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2023-12-21 17:39:34,068 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 22 [2023-12-21 17:39:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:34,068 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2023-12-21 17:39:34,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 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) [2023-12-21 17:39:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2023-12-21 17:39:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 17:39:34,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:34,069 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:34,075 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 [2023-12-21 17:39:34,271 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 [2023-12-21 17:39:34,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:34,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash -427524770, now seen corresponding path program 5 times [2023-12-21 17:39:34,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98764474] [2023-12-21 17:39:34,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:39:34,272 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 [2023-12-21 17:39:34,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:34,273 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) [2023-12-21 17:39:34,273 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 [2023-12-21 17:39:34,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 17:39:34,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:34,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 17:39:34,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:34,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:34,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:34,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98764474] [2023-12-21 17:39:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98764474] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:34,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:34,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-21 17:39:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114876930] [2023-12-21 17:39:34,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:34,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 17:39:34,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:34,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 17:39:34,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2023-12-21 17:39:34,831 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 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) [2023-12-21 17:39:35,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:35,474 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2023-12-21 17:39:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 17:39:35,474 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 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 [2023-12-21 17:39:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:35,475 INFO L225 Difference]: With dead ends: 72 [2023-12-21 17:39:35,475 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 17:39:35,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=933, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 17:39:35,476 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 86 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:35,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 74 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 17:39:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 17:39:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2023-12-21 17:39:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 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) [2023-12-21 17:39:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-12-21 17:39:35,481 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 25 [2023-12-21 17:39:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:35,481 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-12-21 17:39:35,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 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) [2023-12-21 17:39:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-12-21 17:39:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 17:39:35,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:35,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:35,486 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 [2023-12-21 17:39:35,684 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 [2023-12-21 17:39:35,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:35,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:35,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2082479319, now seen corresponding path program 6 times [2023-12-21 17:39:35,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729194490] [2023-12-21 17:39:35,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:39:35,685 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 [2023-12-21 17:39:35,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:35,688 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) [2023-12-21 17:39:35,691 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 [2023-12-21 17:39:35,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 17:39:35,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:35,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 17:39:35,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:35,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:35,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:36,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:36,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:36,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:36,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729194490] [2023-12-21 17:39:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729194490] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:36,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:36,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-12-21 17:39:36,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163000892] [2023-12-21 17:39:36,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:36,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 17:39:36,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 17:39:36,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-12-21 17:39:36,122 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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) [2023-12-21 17:39:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:36,614 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2023-12-21 17:39:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 17:39:36,615 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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 28 [2023-12-21 17:39:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:36,615 INFO L225 Difference]: With dead ends: 72 [2023-12-21 17:39:36,615 INFO L226 Difference]: Without dead ends: 70 [2023-12-21 17:39:36,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 17:39:36,616 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:36,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 176 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 17:39:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-21 17:39:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 43. [2023-12-21 17:39:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 42 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) [2023-12-21 17:39:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2023-12-21 17:39:36,621 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 28 [2023-12-21 17:39:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:36,622 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2023-12-21 17:39:36,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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) [2023-12-21 17:39:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2023-12-21 17:39:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 17:39:36,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:36,622 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:36,627 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 [2023-12-21 17:39:36,825 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 [2023-12-21 17:39:36,825 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:36,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:36,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1617954543, now seen corresponding path program 2 times [2023-12-21 17:39:36,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:36,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128240177] [2023-12-21 17:39:36,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:39:36,826 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 [2023-12-21 17:39:36,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:36,827 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) [2023-12-21 17:39:36,828 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 [2023-12-21 17:39:36,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:39:36,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:36,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 17:39:36,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:36,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:37,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:37,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128240177] [2023-12-21 17:39:37,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128240177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:37,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:37,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-21 17:39:37,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409652596] [2023-12-21 17:39:37,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:37,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 17:39:37,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 17:39:37,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-21 17:39:37,047 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 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) [2023-12-21 17:39:37,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:37,547 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2023-12-21 17:39:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 17:39:37,548 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 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 28 [2023-12-21 17:39:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:37,548 INFO L225 Difference]: With dead ends: 157 [2023-12-21 17:39:37,548 INFO L226 Difference]: Without dead ends: 148 [2023-12-21 17:39:37,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2023-12-21 17:39:37,549 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 220 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:37,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 173 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 17:39:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-21 17:39:37,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 67. [2023-12-21 17:39:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 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) [2023-12-21 17:39:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2023-12-21 17:39:37,556 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 28 [2023-12-21 17:39:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:37,557 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2023-12-21 17:39:37,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 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) [2023-12-21 17:39:37,557 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2023-12-21 17:39:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 17:39:37,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:37,557 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:37,562 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 [2023-12-21 17:39:37,762 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 [2023-12-21 17:39:37,762 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:37,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:37,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1666503272, now seen corresponding path program 7 times [2023-12-21 17:39:37,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:37,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540143940] [2023-12-21 17:39:37,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:39:37,763 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 [2023-12-21 17:39:37,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:37,765 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) [2023-12-21 17:39:37,779 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 [2023-12-21 17:39:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:37,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 17:39:37,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:38,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:38,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:38,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540143940] [2023-12-21 17:39:38,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540143940] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:38,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:38,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2023-12-21 17:39:38,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176523139] [2023-12-21 17:39:38,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:38,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 17:39:38,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 17:39:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2023-12-21 17:39:38,722 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 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) [2023-12-21 17:39:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:39,777 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2023-12-21 17:39:39,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 17:39:39,778 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 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 [2023-12-21 17:39:39,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:39,779 INFO L225 Difference]: With dead ends: 107 [2023-12-21 17:39:39,779 INFO L226 Difference]: Without dead ends: 88 [2023-12-21 17:39:39,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=412, Invalid=1658, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 17:39:39,781 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 104 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:39,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 109 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 17:39:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-21 17:39:39,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 67. [2023-12-21 17:39:39,792 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) [2023-12-21 17:39:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2023-12-21 17:39:39,793 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 31 [2023-12-21 17:39:39,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:39,793 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2023-12-21 17:39:39,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 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) [2023-12-21 17:39:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2023-12-21 17:39:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 17:39:39,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:39,794 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:39,799 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 (13)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:40,004 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 [2023-12-21 17:39:40,004 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:40,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash 409039859, now seen corresponding path program 8 times [2023-12-21 17:39:40,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:40,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285138831] [2023-12-21 17:39:40,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:39:40,006 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 [2023-12-21 17:39:40,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:40,007 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) [2023-12-21 17:39:40,009 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 [2023-12-21 17:39:40,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:39:40,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:40,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 17:39:40,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:40,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:40,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:40,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:40,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:40,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:40,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285138831] [2023-12-21 17:39:40,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285138831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:40,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:40,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-12-21 17:39:40,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126458196] [2023-12-21 17:39:40,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:40,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 17:39:40,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 17:39:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2023-12-21 17:39:40,522 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 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) [2023-12-21 17:39:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:41,186 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2023-12-21 17:39:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 17:39:41,186 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 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 34 [2023-12-21 17:39:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:41,186 INFO L225 Difference]: With dead ends: 104 [2023-12-21 17:39:41,187 INFO L226 Difference]: Without dead ends: 102 [2023-12-21 17:39:41,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1461, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 17:39:41,187 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:41,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 249 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 17:39:41,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-21 17:39:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2023-12-21 17:39:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 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) [2023-12-21 17:39:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2023-12-21 17:39:41,195 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 34 [2023-12-21 17:39:41,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:41,195 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2023-12-21 17:39:41,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 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) [2023-12-21 17:39:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2023-12-21 17:39:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 17:39:41,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:41,196 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:41,206 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 (14)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:41,398 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 [2023-12-21 17:39:41,399 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:41,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash 889525598, now seen corresponding path program 9 times [2023-12-21 17:39:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:41,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631216613] [2023-12-21 17:39:41,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:39:41,400 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 [2023-12-21 17:39:41,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:41,401 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) [2023-12-21 17:39:41,402 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 [2023-12-21 17:39:41,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 17:39:41,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:41,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 17:39:41,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 5 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:41,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 5 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:42,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631216613] [2023-12-21 17:39:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631216613] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:42,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:42,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-21 17:39:42,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847937548] [2023-12-21 17:39:42,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:42,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 17:39:42,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:42,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 17:39:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2023-12-21 17:39:42,435 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 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) [2023-12-21 17:39:44,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:44,010 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2023-12-21 17:39:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 17:39:44,011 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 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 37 [2023-12-21 17:39:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:44,012 INFO L225 Difference]: With dead ends: 118 [2023-12-21 17:39:44,012 INFO L226 Difference]: Without dead ends: 96 [2023-12-21 17:39:44,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=496, Invalid=2054, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 17:39:44,013 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 149 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:44,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 117 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 17:39:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-21 17:39:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2023-12-21 17:39:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 69 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) [2023-12-21 17:39:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2023-12-21 17:39:44,021 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 37 [2023-12-21 17:39:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:44,021 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2023-12-21 17:39:44,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 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) [2023-12-21 17:39:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2023-12-21 17:39:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 17:39:44,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:44,023 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:44,028 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 (15)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:44,228 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 [2023-12-21 17:39:44,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:44,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1968644777, now seen corresponding path program 10 times [2023-12-21 17:39:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591277649] [2023-12-21 17:39:44,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:39:44,229 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 [2023-12-21 17:39:44,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:44,230 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) [2023-12-21 17:39:44,231 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 [2023-12-21 17:39:44,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:39:44,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:44,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 17:39:44,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:44,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:44,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:44,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:44,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:44,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:44,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591277649] [2023-12-21 17:39:44,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591277649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:44,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:44,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-12-21 17:39:44,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969223664] [2023-12-21 17:39:44,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:44,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 17:39:44,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:44,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 17:39:44,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-21 17:39:44,871 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 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) [2023-12-21 17:39:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:45,721 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2023-12-21 17:39:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 17:39:45,722 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 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 40 [2023-12-21 17:39:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:45,722 INFO L225 Difference]: With dead ends: 112 [2023-12-21 17:39:45,722 INFO L226 Difference]: Without dead ends: 110 [2023-12-21 17:39:45,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 17:39:45,723 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 41 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:45,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 380 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 17:39:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-21 17:39:45,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 73. [2023-12-21 17:39:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 72 states have internal predecessors, (85), 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) [2023-12-21 17:39:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2023-12-21 17:39:45,732 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 40 [2023-12-21 17:39:45,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:45,732 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2023-12-21 17:39:45,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 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) [2023-12-21 17:39:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2023-12-21 17:39:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 17:39:45,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:45,732 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:45,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-21 17:39:45,936 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 [2023-12-21 17:39:45,936 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:45,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash 123429608, now seen corresponding path program 11 times [2023-12-21 17:39:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:45,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386915045] [2023-12-21 17:39:45,937 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:39:45,937 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 [2023-12-21 17:39:45,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:45,938 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) [2023-12-21 17:39:45,954 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 [2023-12-21 17:39:46,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-21 17:39:46,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:46,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 17:39:46,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:46,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 12 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:47,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:47,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386915045] [2023-12-21 17:39:47,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386915045] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:47,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:47,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2023-12-21 17:39:47,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241199430] [2023-12-21 17:39:47,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:47,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 17:39:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:47,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 17:39:47,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1124, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 17:39:47,488 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 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) [2023-12-21 17:39:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:49,691 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2023-12-21 17:39:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 17:39:49,694 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 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 43 [2023-12-21 17:39:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:49,694 INFO L225 Difference]: With dead ends: 129 [2023-12-21 17:39:49,694 INFO L226 Difference]: Without dead ends: 104 [2023-12-21 17:39:49,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=728, Invalid=3178, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 17:39:49,695 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 167 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:49,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 163 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 17:39:49,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-21 17:39:49,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 73. [2023-12-21 17:39:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 72 states have internal predecessors, (84), 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) [2023-12-21 17:39:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2023-12-21 17:39:49,704 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 43 [2023-12-21 17:39:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:49,705 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2023-12-21 17:39:49,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 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) [2023-12-21 17:39:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2023-12-21 17:39:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 17:39:49,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:49,706 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:49,711 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 [2023-12-21 17:39:49,909 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 [2023-12-21 17:39:49,909 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:49,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1923288051, now seen corresponding path program 12 times [2023-12-21 17:39:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:49,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367813915] [2023-12-21 17:39:49,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:39:49,910 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 [2023-12-21 17:39:49,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:49,911 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) [2023-12-21 17:39:49,912 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 [2023-12-21 17:39:49,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-21 17:39:49,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:49,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 17:39:49,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:50,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:50,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:50,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:50,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:50,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:50,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367813915] [2023-12-21 17:39:50,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367813915] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:50,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:50,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2023-12-21 17:39:50,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699429276] [2023-12-21 17:39:50,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:50,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 17:39:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:50,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 17:39:50,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 17:39:50,712 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 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) [2023-12-21 17:39:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:51,796 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2023-12-21 17:39:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 17:39:51,796 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 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 46 [2023-12-21 17:39:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:51,797 INFO L225 Difference]: With dead ends: 120 [2023-12-21 17:39:51,797 INFO L226 Difference]: Without dead ends: 118 [2023-12-21 17:39:51,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=245, Invalid=2725, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 17:39:51,798 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:51,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 457 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 17:39:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-21 17:39:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2023-12-21 17:39:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.16) internal successors, (87), 75 states have internal predecessors, (87), 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) [2023-12-21 17:39:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2023-12-21 17:39:51,808 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 46 [2023-12-21 17:39:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:51,808 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2023-12-21 17:39:51,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 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) [2023-12-21 17:39:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2023-12-21 17:39:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 17:39:51,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:51,808 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:51,811 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 (18)] Ended with exit code 0 [2023-12-21 17:39:52,009 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 [2023-12-21 17:39:52,009 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:52,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:52,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1815903582, now seen corresponding path program 13 times [2023-12-21 17:39:52,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:52,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105077797] [2023-12-21 17:39:52,010 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:39:52,010 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 [2023-12-21 17:39:52,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:52,011 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) [2023-12-21 17:39:52,012 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 [2023-12-21 17:39:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:52,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 17:39:52,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 7 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:52,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 7 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:53,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:53,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105077797] [2023-12-21 17:39:53,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105077797] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:53,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:53,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20] total 43 [2023-12-21 17:39:53,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237131543] [2023-12-21 17:39:53,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:53,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 17:39:53,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:53,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 17:39:53,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1465, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 17:39:53,776 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 43 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 43 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) [2023-12-21 17:39:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:57,079 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2023-12-21 17:39:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 17:39:57,079 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 43 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) Word has length 49 [2023-12-21 17:39:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:57,080 INFO L225 Difference]: With dead ends: 140 [2023-12-21 17:39:57,080 INFO L226 Difference]: Without dead ends: 112 [2023-12-21 17:39:57,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=880, Invalid=4376, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 17:39:57,082 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 200 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:57,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 227 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 17:39:57,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-21 17:39:57,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2023-12-21 17:39:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1466666666666667) internal successors, (86), 75 states have internal predecessors, (86), 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) [2023-12-21 17:39:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2023-12-21 17:39:57,094 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 49 [2023-12-21 17:39:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:57,094 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2023-12-21 17:39:57,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 43 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) [2023-12-21 17:39:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2023-12-21 17:39:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 17:39:57,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:57,095 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:57,102 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 (19)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:57,298 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 [2023-12-21 17:39:57,298 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:57,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:57,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1229320745, now seen corresponding path program 14 times [2023-12-21 17:39:57,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012011731] [2023-12-21 17:39:57,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:39:57,299 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 [2023-12-21 17:39:57,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:57,300 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) [2023-12-21 17:39:57,303 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 [2023-12-21 17:39:57,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:39:57,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:57,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 17:39:57,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:57,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:57,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:58,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:58,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:58,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:58,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012011731] [2023-12-21 17:39:58,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012011731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:58,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:58,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2023-12-21 17:39:58,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968189856] [2023-12-21 17:39:58,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:58,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 17:39:58,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 17:39:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1220, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 17:39:58,221 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 37 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) [2023-12-21 17:39:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:59,579 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2023-12-21 17:39:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-21 17:39:59,579 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 37 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) Word has length 52 [2023-12-21 17:39:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:59,580 INFO L225 Difference]: With dead ends: 128 [2023-12-21 17:39:59,580 INFO L226 Difference]: Without dead ends: 126 [2023-12-21 17:39:59,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=278, Invalid=3504, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 17:39:59,581 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 54 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:59,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 645 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 17:39:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-21 17:39:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 79. [2023-12-21 17:39:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.141025641025641) internal successors, (89), 78 states have internal predecessors, (89), 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) [2023-12-21 17:39:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2023-12-21 17:39:59,594 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 52 [2023-12-21 17:39:59,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:59,594 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2023-12-21 17:39:59,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 37 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) [2023-12-21 17:39:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2023-12-21 17:39:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 17:39:59,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:59,594 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:59,598 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 (20)] Ended with exit code 0 [2023-12-21 17:39:59,798 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 [2023-12-21 17:39:59,798 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:59,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:59,798 INFO L85 PathProgramCache]: Analyzing trace with hash -371779439, now seen corresponding path program 3 times [2023-12-21 17:39:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:59,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400668995] [2023-12-21 17:39:59,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:39:59,799 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 [2023-12-21 17:39:59,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:59,800 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) [2023-12-21 17:39:59,803 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 [2023-12-21 17:39:59,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 17:39:59,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:59,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 17:39:59,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 29 proven. 14 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-12-21 17:39:59,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 29 proven. 14 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-12-21 17:40:00,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400668995] [2023-12-21 17:40:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400668995] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:00,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:00,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 17:40:00,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764518888] [2023-12-21 17:40:00,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:00,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 17:40:00,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 17:40:00,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 17:40:00,176 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:40:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:00,249 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2023-12-21 17:40:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 17:40:00,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 17:40:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:00,251 INFO L225 Difference]: With dead ends: 84 [2023-12-21 17:40:00,251 INFO L226 Difference]: Without dead ends: 75 [2023-12-21 17:40:00,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-21 17:40:00,252 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:00,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 4 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:40:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-21 17:40:00,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2023-12-21 17:40:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 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) [2023-12-21 17:40:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2023-12-21 17:40:00,264 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2023-12-21 17:40:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:00,264 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2023-12-21 17:40:00,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:40:00,264 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2023-12-21 17:40:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 17:40:00,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:00,264 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:00,266 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 [2023-12-21 17:40:00,466 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 [2023-12-21 17:40:00,467 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:00,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:00,467 INFO L85 PathProgramCache]: Analyzing trace with hash -486513816, now seen corresponding path program 15 times [2023-12-21 17:40:00,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:00,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590707303] [2023-12-21 17:40:00,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:40:00,467 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 [2023-12-21 17:40:00,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:00,468 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) [2023-12-21 17:40:00,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 17:40:00,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-21 17:40:00,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:00,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 17:40:00,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 8 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:01,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 11 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:02,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590707303] [2023-12-21 17:40:02,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590707303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:02,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:02,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-21 17:40:02,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103621468] [2023-12-21 17:40:02,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:02,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 17:40:02,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:02,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 17:40:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1479, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 17:40:02,831 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 43 states, 43 states have (on average 2.511627906976744) internal successors, (108), 43 states have internal predecessors, (108), 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) [2023-12-21 17:40:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:06,436 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2023-12-21 17:40:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 17:40:06,437 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.511627906976744) internal successors, (108), 43 states have internal predecessors, (108), 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 55 [2023-12-21 17:40:06,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:06,437 INFO L225 Difference]: With dead ends: 94 [2023-12-21 17:40:06,437 INFO L226 Difference]: Without dead ends: 63 [2023-12-21 17:40:06,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=922, Invalid=4334, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 17:40:06,439 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 169 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:06,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 169 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 17:40:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-21 17:40:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2023-12-21 17:40:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 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) [2023-12-21 17:40:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2023-12-21 17:40:06,465 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2023-12-21 17:40:06,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:06,466 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2023-12-21 17:40:06,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.511627906976744) internal successors, (108), 43 states have internal predecessors, (108), 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) [2023-12-21 17:40:06,466 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2023-12-21 17:40:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 17:40:06,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:06,466 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:06,470 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 [2023-12-21 17:40:06,667 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 [2023-12-21 17:40:06,667 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:06,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1521734643, now seen corresponding path program 16 times [2023-12-21 17:40:06,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527101316] [2023-12-21 17:40:06,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:40:06,668 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 [2023-12-21 17:40:06,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:06,669 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) [2023-12-21 17:40:06,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 17:40:06,740 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:40:06,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:06,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 17:40:06,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:06,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:40:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:07,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:07,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:40:07,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:40:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:07,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:07,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527101316] [2023-12-21 17:40:07,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527101316] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:07,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:07,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2023-12-21 17:40:07,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995516431] [2023-12-21 17:40:07,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:07,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 17:40:07,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:07,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 17:40:07,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1515, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 17:40:07,781 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 41 states have internal predecessors, (112), 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) [2023-12-21 17:40:09,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:09,091 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2023-12-21 17:40:09,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 17:40:09,092 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 41 states have internal predecessors, (112), 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 58 [2023-12-21 17:40:09,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:09,092 INFO L225 Difference]: With dead ends: 67 [2023-12-21 17:40:09,092 INFO L226 Difference]: Without dead ends: 65 [2023-12-21 17:40:09,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=257, Invalid=3283, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 17:40:09,093 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:09,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 238 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 17:40:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-21 17:40:09,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2023-12-21 17:40:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 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) [2023-12-21 17:40:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2023-12-21 17:40:09,108 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 58 [2023-12-21 17:40:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:09,108 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2023-12-21 17:40:09,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 41 states have internal predecessors, (112), 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) [2023-12-21 17:40:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2023-12-21 17:40:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 17:40:09,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:09,109 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:09,112 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 (23)] Ended with exit code 0 [2023-12-21 17:40:09,312 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 [2023-12-21 17:40:09,312 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:09,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash 622245214, now seen corresponding path program 17 times [2023-12-21 17:40:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455288011] [2023-12-21 17:40:09,313 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:40:09,313 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 [2023-12-21 17:40:09,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:09,313 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) [2023-12-21 17:40:09,315 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 [2023-12-21 17:40:09,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-12-21 17:40:09,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:09,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 17:40:09,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 9 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:09,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 12 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:12,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455288011] [2023-12-21 17:40:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455288011] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:12,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:12,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-12-21 17:40:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096651626] [2023-12-21 17:40:12,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:12,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 17:40:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 17:40:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1938, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 17:40:12,135 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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) [2023-12-21 17:40:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:17,068 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2023-12-21 17:40:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 17:40:17,069 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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 61 [2023-12-21 17:40:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:17,069 INFO L225 Difference]: With dead ends: 103 [2023-12-21 17:40:17,069 INFO L226 Difference]: Without dead ends: 69 [2023-12-21 17:40:17,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1134, Invalid=5508, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 17:40:17,071 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 195 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:17,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 216 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 17:40:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-21 17:40:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2023-12-21 17:40:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 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) [2023-12-21 17:40:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2023-12-21 17:40:17,084 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2023-12-21 17:40:17,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:17,084 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2023-12-21 17:40:17,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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) [2023-12-21 17:40:17,085 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2023-12-21 17:40:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 17:40:17,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:17,085 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:17,088 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 (24)] Ended with exit code 0 [2023-12-21 17:40:17,285 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 [2023-12-21 17:40:17,285 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:17,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:17,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1031295401, now seen corresponding path program 18 times [2023-12-21 17:40:17,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:17,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510955187] [2023-12-21 17:40:17,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:40:17,286 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 [2023-12-21 17:40:17,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:17,287 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) [2023-12-21 17:40:17,288 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 [2023-12-21 17:40:17,420 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-21 17:40:17,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:17,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 17:40:17,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:17,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 17:40:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:17,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:18,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:40:18,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:40:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:18,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:18,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510955187] [2023-12-21 17:40:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510955187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:18,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2023-12-21 17:40:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734656229] [2023-12-21 17:40:18,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:18,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 17:40:18,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 17:40:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1919, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 17:40:18,663 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 46 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) [2023-12-21 17:40:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:19,883 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2023-12-21 17:40:19,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 17:40:19,883 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 46 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 64 [2023-12-21 17:40:19,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:19,883 INFO L225 Difference]: With dead ends: 73 [2023-12-21 17:40:19,883 INFO L226 Difference]: Without dead ends: 71 [2023-12-21 17:40:19,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=309, Invalid=4113, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 17:40:19,884 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:19,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 293 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 17:40:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-21 17:40:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2023-12-21 17:40:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 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) [2023-12-21 17:40:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2023-12-21 17:40:19,900 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 64 [2023-12-21 17:40:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:19,900 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2023-12-21 17:40:19,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 46 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) [2023-12-21 17:40:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2023-12-21 17:40:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 17:40:19,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:19,900 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:19,904 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 (25)] Ended with exit code 0 [2023-12-21 17:40:20,104 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 [2023-12-21 17:40:20,104 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:20,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1425527784, now seen corresponding path program 19 times [2023-12-21 17:40:20,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:20,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127939116] [2023-12-21 17:40:20,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:40:20,105 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 [2023-12-21 17:40:20,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:20,106 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) [2023-12-21 17:40:20,107 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 [2023-12-21 17:40:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:40:20,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 17:40:20,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:20,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:23,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:23,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127939116] [2023-12-21 17:40:23,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127939116] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:23,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:23,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26] total 55 [2023-12-21 17:40:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727246694] [2023-12-21 17:40:23,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:23,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 17:40:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 17:40:23,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=2434, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 17:40:23,263 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 55 states, 55 states have (on average 2.4) internal successors, (132), 55 states have internal predecessors, (132), 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) [2023-12-21 17:40:30,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:30,454 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2023-12-21 17:40:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 17:40:30,455 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.4) internal successors, (132), 55 states have internal predecessors, (132), 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 67 [2023-12-21 17:40:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:30,455 INFO L225 Difference]: With dead ends: 112 [2023-12-21 17:40:30,455 INFO L226 Difference]: Without dead ends: 75 [2023-12-21 17:40:30,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2155 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1405, Invalid=7337, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 17:40:30,456 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 220 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:30,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 287 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 17:40:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-21 17:40:30,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2023-12-21 17:40:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 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) [2023-12-21 17:40:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2023-12-21 17:40:30,472 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 67 [2023-12-21 17:40:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:30,472 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2023-12-21 17:40:30,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.4) internal successors, (132), 55 states have internal predecessors, (132), 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) [2023-12-21 17:40:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2023-12-21 17:40:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 17:40:30,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:30,473 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:30,477 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 (26)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:30,676 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 [2023-12-21 17:40:30,676 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:30,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1406678029, now seen corresponding path program 20 times [2023-12-21 17:40:30,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:30,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106288991] [2023-12-21 17:40:30,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:40:30,677 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 [2023-12-21 17:40:30,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:30,678 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) [2023-12-21 17:40:30,679 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 [2023-12-21 17:40:30,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:40:30,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:30,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 17:40:30,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:30,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:40:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:31,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:31,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:40:31,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:40:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:32,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106288991] [2023-12-21 17:40:32,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106288991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:32,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:32,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2023-12-21 17:40:32,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520100119] [2023-12-21 17:40:32,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:32,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 17:40:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:32,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 17:40:32,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2201, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 17:40:32,265 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 49 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:40:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:34,283 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2023-12-21 17:40:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 17:40:34,284 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 49 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-21 17:40:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:34,284 INFO L225 Difference]: With dead ends: 79 [2023-12-21 17:40:34,284 INFO L226 Difference]: Without dead ends: 77 [2023-12-21 17:40:34,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=311, Invalid=4801, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 17:40:34,285 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:34,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 358 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 17:40:34,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-21 17:40:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2023-12-21 17:40:34,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 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) [2023-12-21 17:40:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2023-12-21 17:40:34,302 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 70 [2023-12-21 17:40:34,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:34,303 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2023-12-21 17:40:34,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 49 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:40:34,303 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2023-12-21 17:40:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 17:40:34,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:34,303 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:34,307 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 [2023-12-21 17:40:34,503 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 [2023-12-21 17:40:34,504 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:34,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash -343949986, now seen corresponding path program 21 times [2023-12-21 17:40:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83356667] [2023-12-21 17:40:34,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:40:34,504 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 [2023-12-21 17:40:34,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:34,505 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-21 17:40:34,506 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 (28)] Waiting until timeout for monitored process [2023-12-21 17:40:34,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 17:40:34,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:34,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 17:40:34,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 11 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:35,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 11 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:37,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:37,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83356667] [2023-12-21 17:40:37,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83356667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:37,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:37,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2023-12-21 17:40:37,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766877279] [2023-12-21 17:40:37,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:37,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 17:40:37,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 17:40:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2292, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 17:40:37,207 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 53 states, 53 states have (on average 2.7169811320754715) internal successors, (144), 53 states have internal predecessors, (144), 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) [2023-12-21 17:40:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:44,402 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2023-12-21 17:40:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 17:40:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.7169811320754715) internal successors, (144), 53 states have internal predecessors, (144), 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 [2023-12-21 17:40:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:44,403 INFO L225 Difference]: With dead ends: 121 [2023-12-21 17:40:44,403 INFO L226 Difference]: Without dead ends: 81 [2023-12-21 17:40:44,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1315, Invalid=6695, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 17:40:44,404 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 252 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:44,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 307 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-21 17:40:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-21 17:40:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2023-12-21 17:40:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 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) [2023-12-21 17:40:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2023-12-21 17:40:44,428 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 73 [2023-12-21 17:40:44,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:44,429 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2023-12-21 17:40:44,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.7169811320754715) internal successors, (144), 53 states have internal predecessors, (144), 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) [2023-12-21 17:40:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2023-12-21 17:40:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 17:40:44,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:44,429 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:44,435 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 (28)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:44,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-12-21 17:40:44,633 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:44,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:44,633 INFO L85 PathProgramCache]: Analyzing trace with hash 851067177, now seen corresponding path program 22 times [2023-12-21 17:40:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:44,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302602930] [2023-12-21 17:40:44,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:40:44,634 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 [2023-12-21 17:40:44,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:44,635 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-21 17:40:44,635 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 (29)] Waiting until timeout for monitored process [2023-12-21 17:40:44,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:40:44,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:44,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 17:40:44,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:44,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:40:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:45,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:45,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:40:45,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:40:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:46,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:46,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302602930] [2023-12-21 17:40:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302602930] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:46,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-12-21 17:40:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202550325] [2023-12-21 17:40:46,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:46,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 17:40:46,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 17:40:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2592, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 17:40:46,342 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 53 states have internal predecessors, (148), 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) [2023-12-21 17:40:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:48,622 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2023-12-21 17:40:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 17:40:48,622 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 53 states have internal predecessors, (148), 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 76 [2023-12-21 17:40:48,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:48,622 INFO L225 Difference]: With dead ends: 85 [2023-12-21 17:40:48,622 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 17:40:48,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=338, Invalid=5668, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 17:40:48,626 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:48,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 438 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 17:40:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 17:40:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2023-12-21 17:40:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 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) [2023-12-21 17:40:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2023-12-21 17:40:48,646 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2023-12-21 17:40:48,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:48,646 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2023-12-21 17:40:48,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 53 states have internal predecessors, (148), 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) [2023-12-21 17:40:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2023-12-21 17:40:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 17:40:48,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:48,647 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:48,651 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 (29)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:48,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-12-21 17:40:48,851 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:48,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash 955626600, now seen corresponding path program 23 times [2023-12-21 17:40:48,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:48,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933853019] [2023-12-21 17:40:48,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:40:48,852 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 [2023-12-21 17:40:48,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:48,853 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-21 17:40:48,854 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 (30)] Waiting until timeout for monitored process [2023-12-21 17:40:49,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-21 17:40:49,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:49,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 17:40:49,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 12 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:49,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 24 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:52,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:52,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933853019] [2023-12-21 17:40:52,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933853019] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:52,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:52,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2023-12-21 17:40:52,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753717138] [2023-12-21 17:40:52,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:52,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 17:40:52,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:52,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 17:40:52,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=3051, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 17:40:52,444 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 61 states, 61 states have (on average 2.557377049180328) internal successors, (156), 61 states have internal predecessors, (156), 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) [2023-12-21 17:41:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:01,562 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2023-12-21 17:41:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 17:41:01,563 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.557377049180328) internal successors, (156), 61 states have internal predecessors, (156), 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 79 [2023-12-21 17:41:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:01,563 INFO L225 Difference]: With dead ends: 130 [2023-12-21 17:41:01,563 INFO L226 Difference]: Without dead ends: 87 [2023-12-21 17:41:01,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2507 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1710, Invalid=8796, Unknown=0, NotChecked=0, Total=10506 [2023-12-21 17:41:01,565 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 285 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:01,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 396 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-21 17:41:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-21 17:41:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2023-12-21 17:41:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 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) [2023-12-21 17:41:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2023-12-21 17:41:01,586 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2023-12-21 17:41:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:01,586 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2023-12-21 17:41:01,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.557377049180328) internal successors, (156), 61 states have internal predecessors, (156), 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) [2023-12-21 17:41:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2023-12-21 17:41:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-21 17:41:01,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:01,587 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:01,593 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 (30)] Forceful destruction successful, exit code 0 [2023-12-21 17:41:01,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 [2023-12-21 17:41:01,791 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:01,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1871901683, now seen corresponding path program 24 times [2023-12-21 17:41:01,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:01,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638914123] [2023-12-21 17:41:01,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:41:01,792 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 [2023-12-21 17:41:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:01,793 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-12-21 17:41:01,793 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 (31)] Waiting until timeout for monitored process [2023-12-21 17:41:02,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-12-21 17:41:02,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:41:02,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 17:41:02,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:02,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:41:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:02,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:03,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:41:03,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:41:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:03,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:03,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638914123] [2023-12-21 17:41:03,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638914123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:03,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:03,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 57 [2023-12-21 17:41:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744537464] [2023-12-21 17:41:03,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:03,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 17:41:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 17:41:03,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3015, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 17:41:03,869 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 57 states have internal predecessors, (160), 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) [2023-12-21 17:41:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:06,461 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2023-12-21 17:41:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 17:41:06,462 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 57 states have internal predecessors, (160), 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 82 [2023-12-21 17:41:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:06,462 INFO L225 Difference]: With dead ends: 91 [2023-12-21 17:41:06,462 INFO L226 Difference]: Without dead ends: 89 [2023-12-21 17:41:06,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=365, Invalid=6607, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 17:41:06,463 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:06,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 499 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 17:41:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-21 17:41:06,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2023-12-21 17:41:06,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 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) [2023-12-21 17:41:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2023-12-21 17:41:06,486 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 82 [2023-12-21 17:41:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:06,486 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2023-12-21 17:41:06,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 57 states have internal predecessors, (160), 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) [2023-12-21 17:41:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2023-12-21 17:41:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 17:41:06,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:06,486 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:06,490 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 (31)] Ended with exit code 0 [2023-12-21 17:41:06,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 [2023-12-21 17:41:06,687 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:06,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash -27028130, now seen corresponding path program 25 times [2023-12-21 17:41:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:06,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691107951] [2023-12-21 17:41:06,687 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:41:06,688 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 [2023-12-21 17:41:06,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:06,688 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-21 17:41:06,689 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 (32)] Waiting until timeout for monitored process [2023-12-21 17:41:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:41:06,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 17:41:06,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 13 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:07,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 13 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:11,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:11,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691107951] [2023-12-21 17:41:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691107951] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:11,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:11,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 32] total 68 [2023-12-21 17:41:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857188694] [2023-12-21 17:41:11,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-21 17:41:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-21 17:41:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=791, Invalid=3765, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 17:41:11,294 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 68 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 68 states have internal predecessors, (168), 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) [2023-12-21 17:41:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:24,376 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2023-12-21 17:41:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 17:41:24,377 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 68 states have internal predecessors, (168), 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 [2023-12-21 17:41:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:24,377 INFO L225 Difference]: With dead ends: 139 [2023-12-21 17:41:24,377 INFO L226 Difference]: Without dead ends: 93 [2023-12-21 17:41:24,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3422 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=2100, Invalid=11472, Unknown=0, NotChecked=0, Total=13572 [2023-12-21 17:41:24,378 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 316 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:24,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 405 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1793 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-21 17:41:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-21 17:41:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2023-12-21 17:41:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 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) [2023-12-21 17:41:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2023-12-21 17:41:24,402 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 85 [2023-12-21 17:41:24,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:24,402 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2023-12-21 17:41:24,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 68 states have internal predecessors, (168), 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) [2023-12-21 17:41:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2023-12-21 17:41:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 17:41:24,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:24,403 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:24,414 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 (32)] Forceful destruction successful, exit code 0 [2023-12-21 17:41:24,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 [2023-12-21 17:41:24,607 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:24,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:24,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1826078889, now seen corresponding path program 26 times [2023-12-21 17:41:24,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:24,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6705996] [2023-12-21 17:41:24,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:41:24,608 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 [2023-12-21 17:41:24,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:24,609 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-21 17:41:24,609 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 (33)] Waiting until timeout for monitored process [2023-12-21 17:41:24,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:41:24,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:41:24,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 17:41:24,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:24,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:41:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:25,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:26,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:41:26,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:41:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:26,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:26,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6705996] [2023-12-21 17:41:26,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6705996] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:26,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:26,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 61 [2023-12-21 17:41:26,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10381447] [2023-12-21 17:41:26,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:26,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 17:41:26,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:26,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 17:41:26,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3470, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 17:41:26,797 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 61 states, 61 states have (on average 2.819672131147541) internal successors, (172), 61 states have internal predecessors, (172), 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) [2023-12-21 17:41:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:29,783 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2023-12-21 17:41:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-21 17:41:29,783 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.819672131147541) internal successors, (172), 61 states have internal predecessors, (172), 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 88 [2023-12-21 17:41:29,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:29,783 INFO L225 Difference]: With dead ends: 97 [2023-12-21 17:41:29,783 INFO L226 Difference]: Without dead ends: 95 [2023-12-21 17:41:29,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=392, Invalid=7618, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 17:41:29,784 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 3045 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 3075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:29,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 563 Invalid, 3075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3045 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 17:41:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-21 17:41:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2023-12-21 17:41:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 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) [2023-12-21 17:41:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2023-12-21 17:41:29,811 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 88 [2023-12-21 17:41:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:29,811 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2023-12-21 17:41:29,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.819672131147541) internal successors, (172), 61 states have internal predecessors, (172), 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) [2023-12-21 17:41:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2023-12-21 17:41:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 17:41:29,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:29,811 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:29,816 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 (33)] Forceful destruction successful, exit code 0 [2023-12-21 17:41:30,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /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 [2023-12-21 17:41:30,015 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:30,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash 665715944, now seen corresponding path program 27 times [2023-12-21 17:41:30,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:30,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022834616] [2023-12-21 17:41:30,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:41:30,016 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 [2023-12-21 17:41:30,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:30,017 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-21 17:41:30,018 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 (34)] Waiting until timeout for monitored process [2023-12-21 17:41:30,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-21 17:41:30,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:41:30,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 17:41:30,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 14 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:31,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 14 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:33,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:33,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022834616] [2023-12-21 17:41:33,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022834616] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:33,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:33,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2023-12-21 17:41:33,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359965043] [2023-12-21 17:41:33,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:33,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 17:41:33,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:33,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 17:41:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=3492, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 17:41:33,808 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 65 states, 65 states have (on average 2.769230769230769) internal successors, (180), 65 states have internal predecessors, (180), 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) [2023-12-21 17:41:46,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:46,136 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2023-12-21 17:41:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 17:41:46,137 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.769230769230769) internal successors, (180), 65 states have internal predecessors, (180), 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 91 [2023-12-21 17:41:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:46,137 INFO L225 Difference]: With dead ends: 148 [2023-12-21 17:41:46,137 INFO L226 Difference]: Without dead ends: 99 [2023-12-21 17:41:46,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2703 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1933, Invalid=10277, Unknown=0, NotChecked=0, Total=12210 [2023-12-21 17:41:46,140 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 353 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:46,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 477 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-21 17:41:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-21 17:41:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2023-12-21 17:41:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 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) [2023-12-21 17:41:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2023-12-21 17:41:46,176 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 91 [2023-12-21 17:41:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:46,177 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2023-12-21 17:41:46,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.769230769230769) internal successors, (180), 65 states have internal predecessors, (180), 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) [2023-12-21 17:41:46,177 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2023-12-21 17:41:46,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 17:41:46,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:46,177 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:46,182 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 (34)] Ended with exit code 0 [2023-12-21 17:41:46,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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 [2023-12-21 17:41:46,382 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:46,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash 445205491, now seen corresponding path program 28 times [2023-12-21 17:41:46,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:46,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669790251] [2023-12-21 17:41:46,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:41:46,383 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 [2023-12-21 17:41:46,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:46,384 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-12-21 17:41:46,384 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 (35)] Waiting until timeout for monitored process [2023-12-21 17:41:46,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:41:46,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:41:46,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 17:41:46,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:46,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:41:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:47,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:48,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:41:48,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:41:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:48,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:48,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669790251] [2023-12-21 17:41:48,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669790251] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:48,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:48,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 65 [2023-12-21 17:41:48,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393998526] [2023-12-21 17:41:48,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:48,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 17:41:48,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:48,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 17:41:48,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3957, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 17:41:48,901 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 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) [2023-12-21 17:41:52,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:52,375 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2023-12-21 17:41:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 17:41:52,375 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 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 94 [2023-12-21 17:41:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:52,376 INFO L225 Difference]: With dead ends: 103 [2023-12-21 17:41:52,376 INFO L226 Difference]: Without dead ends: 101 [2023-12-21 17:41:52,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1964 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=419, Invalid=8701, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 17:41:52,376 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 3344 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:52,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 618 Invalid, 3377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3344 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 17:41:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-21 17:41:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2023-12-21 17:41:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 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) [2023-12-21 17:41:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2023-12-21 17:41:52,405 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 94 [2023-12-21 17:41:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:52,405 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2023-12-21 17:41:52,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 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) [2023-12-21 17:41:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2023-12-21 17:41:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 17:41:52,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:52,406 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:52,416 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 (35)] Ended with exit code 0 [2023-12-21 17:41:52,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /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 [2023-12-21 17:41:52,610 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:52,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:52,611 INFO L85 PathProgramCache]: Analyzing trace with hash 263077214, now seen corresponding path program 29 times [2023-12-21 17:41:52,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:52,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753075129] [2023-12-21 17:41:52,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:41:52,611 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 [2023-12-21 17:41:52,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:52,612 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-12-21 17:41:52,613 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 (36)] Waiting until timeout for monitored process [2023-12-21 17:41:52,830 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-12-21 17:41:52,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:41:52,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-21 17:41:52,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 15 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:53,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 16 proven. 659 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:56,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:56,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753075129] [2023-12-21 17:41:56,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753075129] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:56,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:56,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 70 [2023-12-21 17:41:56,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196463270] [2023-12-21 17:41:56,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:56,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-21 17:41:56,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:56,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-21 17:41:56,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=752, Invalid=4078, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 17:41:56,821 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 70 states, 70 states have (on average 2.742857142857143) internal successors, (192), 70 states have internal predecessors, (192), 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) [2023-12-21 17:42:11,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:11,783 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2023-12-21 17:42:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-21 17:42:11,783 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.742857142857143) internal successors, (192), 70 states have internal predecessors, (192), 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 97 [2023-12-21 17:42:11,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:11,784 INFO L225 Difference]: With dead ends: 157 [2023-12-21 17:42:11,784 INFO L226 Difference]: Without dead ends: 105 [2023-12-21 17:42:11,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3332 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=2274, Invalid=12246, Unknown=0, NotChecked=0, Total=14520 [2023-12-21 17:42:11,785 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 391 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:11,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 512 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-21 17:42:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-21 17:42:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2023-12-21 17:42:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 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) [2023-12-21 17:42:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2023-12-21 17:42:11,814 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 97 [2023-12-21 17:42:11,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:11,814 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2023-12-21 17:42:11,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.742857142857143) internal successors, (192), 70 states have internal predecessors, (192), 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) [2023-12-21 17:42:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2023-12-21 17:42:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 17:42:11,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:11,815 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:11,819 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 (36)] Ended with exit code 0 [2023-12-21 17:42:12,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /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 [2023-12-21 17:42:12,020 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:12,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:12,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1386008617, now seen corresponding path program 30 times [2023-12-21 17:42:12,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:12,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644537708] [2023-12-21 17:42:12,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:42:12,020 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 [2023-12-21 17:42:12,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:12,021 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-12-21 17:42:12,023 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 (37)] Waiting until timeout for monitored process [2023-12-21 17:42:12,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2023-12-21 17:42:12,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:42:12,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 17:42:12,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:12,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:42:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:13,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:42:14,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:42:14,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:42:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:14,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:42:14,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644537708] [2023-12-21 17:42:14,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644537708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:42:14,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:42:14,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 69 [2023-12-21 17:42:14,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340618382] [2023-12-21 17:42:14,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:42:14,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 17:42:14,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:42:14,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 17:42:14,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=4476, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 17:42:14,996 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 69 states, 69 states have (on average 2.8405797101449277) internal successors, (196), 69 states have internal predecessors, (196), 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) [2023-12-21 17:42:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:18,894 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2023-12-21 17:42:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 17:42:18,895 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.8405797101449277) internal successors, (196), 69 states have internal predecessors, (196), 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 100 [2023-12-21 17:42:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:18,895 INFO L225 Difference]: With dead ends: 109 [2023-12-21 17:42:18,895 INFO L226 Difference]: Without dead ends: 107 [2023-12-21 17:42:18,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=446, Invalid=9856, Unknown=0, NotChecked=0, Total=10302 [2023-12-21 17:42:18,896 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 4077 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 4111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:18,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 781 Invalid, 4111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4077 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 17:42:18,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-21 17:42:18,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2023-12-21 17:42:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 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) [2023-12-21 17:42:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2023-12-21 17:42:18,936 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2023-12-21 17:42:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:18,936 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2023-12-21 17:42:18,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.8405797101449277) internal successors, (196), 69 states have internal predecessors, (196), 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) [2023-12-21 17:42:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2023-12-21 17:42:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 17:42:18,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:18,937 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:18,942 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 (37)] Ended with exit code 0 [2023-12-21 17:42:19,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /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 [2023-12-21 17:42:19,142 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:19,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1227569816, now seen corresponding path program 31 times [2023-12-21 17:42:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:19,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7691076] [2023-12-21 17:42:19,143 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:42:19,143 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 [2023-12-21 17:42:19,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:19,144 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-12-21 17:42:19,145 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 (38)] Waiting until timeout for monitored process [2023-12-21 17:42:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:42:19,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 17:42:19,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 16 proven. 752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:20,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:42:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 16 proven. 752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:25,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:42:25,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7691076] [2023-12-21 17:42:25,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7691076] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:42:25,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:42:25,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 38] total 80 [2023-12-21 17:42:25,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952410749] [2023-12-21 17:42:25,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:42:25,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-21 17:42:25,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:42:25,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-21 17:42:25,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1067, Invalid=5253, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 17:42:25,644 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 80 states, 80 states have (on average 2.55) internal successors, (204), 80 states have internal predecessors, (204), 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) [2023-12-21 17:42:48,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:48,856 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2023-12-21 17:42:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 17:42:48,857 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.55) internal successors, (204), 80 states have internal predecessors, (204), 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 103 [2023-12-21 17:42:48,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:48,857 INFO L225 Difference]: With dead ends: 166 [2023-12-21 17:42:48,857 INFO L226 Difference]: Without dead ends: 111 [2023-12-21 17:42:48,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4769 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=2881, Invalid=16025, Unknown=0, NotChecked=0, Total=18906 [2023-12-21 17:42:48,859 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 461 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:48,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 602 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-21 17:42:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-21 17:42:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2023-12-21 17:42:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 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) [2023-12-21 17:42:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2023-12-21 17:42:48,903 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 103 [2023-12-21 17:42:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:48,903 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2023-12-21 17:42:48,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.55) internal successors, (204), 80 states have internal predecessors, (204), 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) [2023-12-21 17:42:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2023-12-21 17:42:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 17:42:48,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:48,903 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:48,908 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 (38)] Ended with exit code 0 [2023-12-21 17:42:49,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /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 [2023-12-21 17:42:49,104 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:49,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash -811674637, now seen corresponding path program 32 times [2023-12-21 17:42:49,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:49,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024671283] [2023-12-21 17:42:49,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:42:49,105 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 [2023-12-21 17:42:49,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:49,106 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-12-21 17:42:49,106 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 (39)] Waiting until timeout for monitored process [2023-12-21 17:42:49,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:42:49,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:42:49,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 17:42:49,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:49,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:42:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:50,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:42:51,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:42:51,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:42:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:52,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:42:52,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024671283] [2023-12-21 17:42:52,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024671283] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:42:52,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:42:52,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 73 [2023-12-21 17:42:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736688208] [2023-12-21 17:42:52,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:42:52,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-21 17:42:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:42:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-21 17:42:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=5027, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 17:42:52,235 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 73 states, 73 states have (on average 2.8493150684931505) internal successors, (208), 73 states have internal predecessors, (208), 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) [2023-12-21 17:42:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:56,567 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2023-12-21 17:42:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-21 17:42:56,567 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.8493150684931505) internal successors, (208), 73 states have internal predecessors, (208), 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 106 [2023-12-21 17:42:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:56,568 INFO L225 Difference]: With dead ends: 115 [2023-12-21 17:42:56,568 INFO L226 Difference]: Without dead ends: 113 [2023-12-21 17:42:56,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2515 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=473, Invalid=11083, Unknown=0, NotChecked=0, Total=11556 [2023-12-21 17:42:56,569 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 4638 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 4675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:56,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 879 Invalid, 4675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4638 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 17:42:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-21 17:42:56,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2023-12-21 17:42:56,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 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) [2023-12-21 17:42:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2023-12-21 17:42:56,612 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 106 [2023-12-21 17:42:56,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:56,612 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2023-12-21 17:42:56,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.8493150684931505) internal successors, (208), 73 states have internal predecessors, (208), 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) [2023-12-21 17:42:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2023-12-21 17:42:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 17:42:56,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:56,612 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:56,617 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 (39)] Ended with exit code 0 [2023-12-21 17:42:56,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /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 [2023-12-21 17:42:56,814 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:56,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:56,815 INFO L85 PathProgramCache]: Analyzing trace with hash 72070494, now seen corresponding path program 33 times [2023-12-21 17:42:56,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:56,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680917764] [2023-12-21 17:42:56,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:42:56,815 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 [2023-12-21 17:42:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:56,816 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-12-21 17:42:56,817 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 (40)] Waiting until timeout for monitored process [2023-12-21 17:42:57,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-12-21 17:42:57,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:42:57,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 17:42:57,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 17 proven. 850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:58,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:43:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 17 proven. 850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:01,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:43:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680917764] [2023-12-21 17:43:01,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680917764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:43:01,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:43:01,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77 [2023-12-21 17:43:01,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571716028] [2023-12-21 17:43:01,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:43:01,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-21 17:43:01,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:43:01,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-21 17:43:01,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=908, Invalid=4944, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 17:43:01,908 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 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) [2023-12-21 17:43:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:43:21,071 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2023-12-21 17:43:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-21 17:43:21,072 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 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 109 [2023-12-21 17:43:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:43:21,072 INFO L225 Difference]: With dead ends: 175 [2023-12-21 17:43:21,072 INFO L226 Difference]: Without dead ends: 117 [2023-12-21 17:43:21,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3891 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=2668, Invalid=14624, Unknown=0, NotChecked=0, Total=17292 [2023-12-21 17:43:21,074 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 473 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 3337 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 3337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:43:21,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 612 Invalid, 3515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 3337 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-12-21 17:43:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-21 17:43:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2023-12-21 17:43:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 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) [2023-12-21 17:43:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2023-12-21 17:43:21,112 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 109 [2023-12-21 17:43:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:43:21,112 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2023-12-21 17:43:21,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 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) [2023-12-21 17:43:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2023-12-21 17:43:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 17:43:21,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:43:21,112 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2023-12-21 17:43:21,120 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 (40)] Forceful destruction successful, exit code 0 [2023-12-21 17:43:21,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /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 [2023-12-21 17:43:21,318 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:43:21,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:43:21,318 INFO L85 PathProgramCache]: Analyzing trace with hash 768962473, now seen corresponding path program 34 times [2023-12-21 17:43:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:43:21,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142329441] [2023-12-21 17:43:21,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:43:21,319 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 [2023-12-21 17:43:21,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:43:21,319 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-12-21 17:43:21,320 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 (41)] Waiting until timeout for monitored process [2023-12-21 17:43:21,491 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:43:21,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:43:21,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 17:43:21,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:43:21,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:43:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 0 proven. 919 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:22,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:43:23,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:43:23,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:43:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 0 proven. 919 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:24,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:43:24,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142329441] [2023-12-21 17:43:24,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142329441] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:43:24,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:43:24,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 77 [2023-12-21 17:43:24,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073737131] [2023-12-21 17:43:24,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:43:24,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-21 17:43:24,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:43:24,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-21 17:43:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=5610, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 17:43:24,648 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 77 states, 77 states have (on average 2.857142857142857) internal successors, (220), 77 states have internal predecessors, (220), 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) [2023-12-21 17:43:29,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:43:29,222 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2023-12-21 17:43:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-21 17:43:29,223 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.857142857142857) internal successors, (220), 77 states have internal predecessors, (220), 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 112 [2023-12-21 17:43:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:43:29,223 INFO L225 Difference]: With dead ends: 121 [2023-12-21 17:43:29,223 INFO L226 Difference]: Without dead ends: 119 [2023-12-21 17:43:29,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2816 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=500, Invalid=12382, Unknown=0, NotChecked=0, Total=12882 [2023-12-21 17:43:29,224 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 4482 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 4521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:43:29,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 858 Invalid, 4521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4482 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 17:43:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-21 17:43:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2023-12-21 17:43:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 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) [2023-12-21 17:43:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2023-12-21 17:43:29,263 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 112 [2023-12-21 17:43:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:43:29,263 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2023-12-21 17:43:29,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.857142857142857) internal successors, (220), 77 states have internal predecessors, (220), 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) [2023-12-21 17:43:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2023-12-21 17:43:29,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 17:43:29,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:43:29,264 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2023-12-21 17:43:29,271 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 (41)] Forceful destruction successful, exit code 0 [2023-12-21 17:43:29,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /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 [2023-12-21 17:43:29,469 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:43:29,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:43:29,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1189218840, now seen corresponding path program 35 times [2023-12-21 17:43:29,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:43:29,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960281630] [2023-12-21 17:43:29,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:43:29,469 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 [2023-12-21 17:43:29,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:43:29,470 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-12-21 17:43:29,471 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 (42)] Waiting until timeout for monitored process [2023-12-21 17:43:29,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-12-21 17:43:29,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:43:29,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 17:43:29,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:43:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 18 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:31,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:43:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 18 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:37,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:43:37,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960281630] [2023-12-21 17:43:37,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960281630] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:43:37,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:43:37,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 84 [2023-12-21 17:43:37,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213745588] [2023-12-21 17:43:37,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:43:37,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-21 17:43:37,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:43:37,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-21 17:43:37,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1222, Invalid=5750, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 17:43:37,398 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 84 states, 84 states have (on average 2.7142857142857144) internal successors, (228), 84 states have internal predecessors, (228), 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) [2023-12-21 17:44:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:44:07,153 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions. [2023-12-21 17:44:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-21 17:44:07,153 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.7142857142857144) internal successors, (228), 84 states have internal predecessors, (228), 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 115 [2023-12-21 17:44:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:44:07,154 INFO L225 Difference]: With dead ends: 184 [2023-12-21 17:44:07,154 INFO L226 Difference]: Without dead ends: 123 [2023-12-21 17:44:07,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4745 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=3252, Invalid=17054, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 17:44:07,156 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 518 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 3439 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 3439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:44:07,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 772 Invalid, 3649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 3439 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-21 17:44:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-21 17:44:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2023-12-21 17:44:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 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) [2023-12-21 17:44:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2023-12-21 17:44:07,205 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 115 [2023-12-21 17:44:07,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:44:07,205 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2023-12-21 17:44:07,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.7142857142857144) internal successors, (228), 84 states have internal predecessors, (228), 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) [2023-12-21 17:44:07,206 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2023-12-21 17:44:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 17:44:07,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:44:07,206 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1] [2023-12-21 17:44:07,211 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 (42)] Ended with exit code 0 [2023-12-21 17:44:07,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /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 [2023-12-21 17:44:07,407 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:44:07,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:44:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1637381133, now seen corresponding path program 36 times [2023-12-21 17:44:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:44:07,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831598374] [2023-12-21 17:44:07,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:44:07,407 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 [2023-12-21 17:44:07,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:44:07,408 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-12-21 17:44:07,409 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 (43)] Waiting until timeout for monitored process [2023-12-21 17:44:07,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2023-12-21 17:44:07,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:44:07,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 17:44:07,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:44:08,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:44:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:08,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:44:10,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:44:10,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:44:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:11,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:44:11,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831598374] [2023-12-21 17:44:11,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831598374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:44:11,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:44:11,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 81 [2023-12-21 17:44:11,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623909513] [2023-12-21 17:44:11,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:44:11,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-21 17:44:11,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:44:11,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-21 17:44:11,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=6225, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 17:44:11,383 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 81 states, 81 states have (on average 2.8641975308641974) internal successors, (232), 81 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) [2023-12-21 17:44:16,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:44:16,674 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2023-12-21 17:44:16,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-21 17:44:16,674 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.8641975308641974) internal successors, (232), 81 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) Word has length 118 [2023-12-21 17:44:16,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:44:16,675 INFO L225 Difference]: With dead ends: 127 [2023-12-21 17:44:16,675 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 17:44:16,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3134 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=527, Invalid=13753, Unknown=0, NotChecked=0, Total=14280 [2023-12-21 17:44:16,676 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 5221 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 5261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 5221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:44:16,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1044 Invalid, 5261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 5221 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-21 17:44:16,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 17:44:16,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2023-12-21 17:44:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 121 states have internal predecessors, (123), 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) [2023-12-21 17:44:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2023-12-21 17:44:16,723 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 118 [2023-12-21 17:44:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:44:16,724 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2023-12-21 17:44:16,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.8641975308641974) internal successors, (232), 81 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) [2023-12-21 17:44:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2023-12-21 17:44:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 17:44:16,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:44:16,724 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2023-12-21 17:44:16,730 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 (43)] Forceful destruction successful, exit code 0 [2023-12-21 17:44:16,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /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 [2023-12-21 17:44:16,931 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:44:16,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:44:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1272447650, now seen corresponding path program 37 times [2023-12-21 17:44:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:44:16,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088887175] [2023-12-21 17:44:16,932 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:44:16,932 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 [2023-12-21 17:44:16,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:44:16,933 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-12-21 17:44:16,966 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 (44)] Waiting until timeout for monitored process [2023-12-21 17:44:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:44:17,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 17:44:17,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:44:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 19 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:18,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:44:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 19 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:25,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:44:25,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088887175] [2023-12-21 17:44:25,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088887175] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:44:25,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:44:25,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 44] total 89 [2023-12-21 17:44:25,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003537158] [2023-12-21 17:44:25,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:44:25,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-21 17:44:25,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:44:25,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-21 17:44:25,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=6477, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 17:44:25,739 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 89 states, 89 states have (on average 2.696629213483146) internal successors, (240), 89 states have internal predecessors, (240), 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) [2023-12-21 17:45:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:45:00,471 INFO L93 Difference]: Finished difference Result 193 states and 195 transitions. [2023-12-21 17:45:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 17:45:00,471 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.696629213483146) internal successors, (240), 89 states have internal predecessors, (240), 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 121 [2023-12-21 17:45:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:45:00,472 INFO L225 Difference]: With dead ends: 193 [2023-12-21 17:45:00,472 INFO L226 Difference]: Without dead ends: 129 [2023-12-21 17:45:00,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5528 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=3630, Invalid=19626, Unknown=0, NotChecked=0, Total=23256 [2023-12-21 17:45:00,473 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 563 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 3639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:45:00,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 799 Invalid, 3639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 3406 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-12-21 17:45:00,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-21 17:45:00,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2023-12-21 17:45:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 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) [2023-12-21 17:45:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2023-12-21 17:45:00,518 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 121 [2023-12-21 17:45:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:45:00,518 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2023-12-21 17:45:00,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.696629213483146) internal successors, (240), 89 states have internal predecessors, (240), 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) [2023-12-21 17:45:00,519 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2023-12-21 17:45:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 17:45:00,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:45:00,519 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1] [2023-12-21 17:45:00,524 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 (44)] Ended with exit code 0 [2023-12-21 17:45:00,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /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 [2023-12-21 17:45:00,724 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:45:00,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:45:00,724 INFO L85 PathProgramCache]: Analyzing trace with hash -347234519, now seen corresponding path program 38 times [2023-12-21 17:45:00,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:45:00,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871772822] [2023-12-21 17:45:00,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:45:00,725 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 [2023-12-21 17:45:00,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:45:00,726 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2023-12-21 17:45:00,727 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 (45)] Waiting until timeout for monitored process [2023-12-21 17:45:00,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:45:00,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:45:00,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 17:45:00,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:45:01,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:45:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 1141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:02,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:45:03,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:45:03,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:45:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 1141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:04,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:45:04,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871772822] [2023-12-21 17:45:04,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871772822] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:45:04,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:45:04,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 85 [2023-12-21 17:45:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849808407] [2023-12-21 17:45:04,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:45:04,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-21 17:45:04,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:45:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-21 17:45:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6872, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 17:45:04,845 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 85 states, 85 states have (on average 2.8705882352941177) internal successors, (244), 85 states have internal predecessors, (244), 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) [2023-12-21 17:45:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:45:10,550 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2023-12-21 17:45:10,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-21 17:45:10,550 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.8705882352941177) internal successors, (244), 85 states have internal predecessors, (244), 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 124 [2023-12-21 17:45:10,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:45:10,551 INFO L225 Difference]: With dead ends: 133 [2023-12-21 17:45:10,551 INFO L226 Difference]: Without dead ends: 131 [2023-12-21 17:45:10,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3469 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=554, Invalid=15196, Unknown=0, NotChecked=0, Total=15750 [2023-12-21 17:45:10,552 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 5648 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 5691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 5648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:45:10,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1073 Invalid, 5691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 5648 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-21 17:45:10,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-21 17:45:10,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2023-12-21 17:45:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 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) [2023-12-21 17:45:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2023-12-21 17:45:10,599 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2023-12-21 17:45:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:45:10,599 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2023-12-21 17:45:10,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.8705882352941177) internal successors, (244), 85 states have internal predecessors, (244), 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) [2023-12-21 17:45:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2023-12-21 17:45:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 17:45:10,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:45:10,600 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2023-12-21 17:45:10,608 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 (45)] Forceful destruction successful, exit code 0 [2023-12-21 17:45:10,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /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 [2023-12-21 17:45:10,806 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:45:10,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:45:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2117965416, now seen corresponding path program 39 times [2023-12-21 17:45:10,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:45:10,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855148272] [2023-12-21 17:45:10,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:45:10,806 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 [2023-12-21 17:45:10,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:45:10,807 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-12-21 17:45:10,808 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 (46)] Waiting until timeout for monitored process [2023-12-21 17:45:11,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-12-21 17:45:11,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:45:11,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 17:45:11,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:45:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 20 proven. 1180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:12,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:45:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 23 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:21,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:45:21,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855148272] [2023-12-21 17:45:21,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855148272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:45:21,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:45:21,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2023-12-21 17:45:21,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316538797] [2023-12-21 17:45:21,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:45:21,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-12-21 17:45:21,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:45:21,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-12-21 17:45:21,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1239, Invalid=6951, Unknown=0, NotChecked=0, Total=8190 [2023-12-21 17:45:21,217 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 91 states, 91 states have (on average 2.769230769230769) internal successors, (252), 91 states have internal predecessors, (252), 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) [2023-12-21 17:45:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:45:52,620 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2023-12-21 17:45:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 17:45:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.769230769230769) internal successors, (252), 91 states have internal predecessors, (252), 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 127 [2023-12-21 17:45:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:45:52,621 INFO L225 Difference]: With dead ends: 202 [2023-12-21 17:45:52,622 INFO L226 Difference]: Without dead ends: 135 [2023-12-21 17:45:52,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5734 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=3724, Invalid=20768, Unknown=0, NotChecked=0, Total=24492 [2023-12-21 17:45:52,623 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 611 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 4790 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 5044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 4790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:45:52,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 910 Invalid, 5044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 4790 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2023-12-21 17:45:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-21 17:45:52,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2023-12-21 17:45:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 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) [2023-12-21 17:45:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2023-12-21 17:45:52,674 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 127 [2023-12-21 17:45:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:45:52,674 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2023-12-21 17:45:52,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.769230769230769) internal successors, (252), 91 states have internal predecessors, (252), 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) [2023-12-21 17:45:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2023-12-21 17:45:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 17:45:52,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:45:52,674 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1] [2023-12-21 17:45:52,691 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 (46)] Forceful destruction successful, exit code 0 [2023-12-21 17:45:52,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /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 [2023-12-21 17:45:52,880 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:45:52,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:45:52,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1015581709, now seen corresponding path program 40 times [2023-12-21 17:45:52,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:45:52,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56934150] [2023-12-21 17:45:52,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:45:52,881 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 [2023-12-21 17:45:52,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:45:52,882 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-12-21 17:45:52,882 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 (47)] Waiting until timeout for monitored process [2023-12-21 17:45:53,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:45:53,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:45:53,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 17:45:53,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:45:53,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:45:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 0 proven. 1261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:54,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:45:55,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:45:55,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:45:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 0 proven. 1261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:57,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:45:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56934150] [2023-12-21 17:45:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56934150] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:45:57,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:45:57,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 89 [2023-12-21 17:45:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749237356] [2023-12-21 17:45:57,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:45:57,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-21 17:45:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:45:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-21 17:45:57,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=7551, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 17:45:57,193 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 89 states, 89 states have (on average 2.8764044943820224) internal successors, (256), 89 states have internal predecessors, (256), 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) [2023-12-21 17:46:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:46:03,471 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2023-12-21 17:46:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-21 17:46:03,471 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.8764044943820224) internal successors, (256), 89 states have internal predecessors, (256), 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 130 [2023-12-21 17:46:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:46:03,472 INFO L225 Difference]: With dead ends: 139 [2023-12-21 17:46:03,472 INFO L226 Difference]: Without dead ends: 137 [2023-12-21 17:46:03,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3821 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=581, Invalid=16711, Unknown=0, NotChecked=0, Total=17292 [2023-12-21 17:46:03,473 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 6449 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 6493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 6449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:46:03,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1231 Invalid, 6493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 6449 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-21 17:46:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-21 17:46:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2023-12-21 17:46:03,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 133 states have internal predecessors, (135), 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) [2023-12-21 17:46:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2023-12-21 17:46:03,535 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 130 [2023-12-21 17:46:03,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:46:03,536 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2023-12-21 17:46:03,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.8764044943820224) internal successors, (256), 89 states have internal predecessors, (256), 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) [2023-12-21 17:46:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2023-12-21 17:46:03,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 17:46:03,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:46:03,536 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2023-12-21 17:46:03,541 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 (47)] Ended with exit code 0 [2023-12-21 17:46:03,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /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 [2023-12-21 17:46:03,737 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:46:03,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:46:03,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1439754914, now seen corresponding path program 41 times [2023-12-21 17:46:03,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:46:03,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611184840] [2023-12-21 17:46:03,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:46:03,738 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 [2023-12-21 17:46:03,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:46:03,738 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-12-21 17:46:03,739 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 (48)] Waiting until timeout for monitored process [2023-12-21 17:46:04,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-12-21 17:46:04,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:46:04,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-21 17:46:04,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:46:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 21 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:46:05,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:46:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 21 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:46:13,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:46:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611184840] [2023-12-21 17:46:13,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611184840] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:46:13,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:46:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 48] total 99 [2023-12-21 17:46:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227134129] [2023-12-21 17:46:13,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:46:13,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-21 17:46:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:46:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-21 17:46:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1630, Invalid=8072, Unknown=0, NotChecked=0, Total=9702 [2023-12-21 17:46:13,998 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand has 99 states, 99 states have (on average 2.6666666666666665) internal successors, (264), 99 states have internal predecessors, (264), 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) [2023-12-21 17:46:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:46:58,928 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2023-12-21 17:46:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-21 17:46:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.6666666666666665) internal successors, (264), 99 states have internal predecessors, (264), 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 133 [2023-12-21 17:46:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:46:58,929 INFO L225 Difference]: With dead ends: 211 [2023-12-21 17:46:58,929 INFO L226 Difference]: Without dead ends: 141 [2023-12-21 17:46:58,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7025 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=4339, Invalid=24391, Unknown=0, NotChecked=0, Total=28730 [2023-12-21 17:46:58,931 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 705 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 4192 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 4503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 4192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:46:58,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 981 Invalid, 4503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 4192 Invalid, 0 Unknown, 0 Unchecked, 19.8s Time] [2023-12-21 17:46:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-21 17:46:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2023-12-21 17:46:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 136 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) [2023-12-21 17:46:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2023-12-21 17:46:58,990 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 133 [2023-12-21 17:46:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:46:58,990 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2023-12-21 17:46:58,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.6666666666666665) internal successors, (264), 99 states have internal predecessors, (264), 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) [2023-12-21 17:46:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2023-12-21 17:46:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 17:46:58,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:46:58,991 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2023-12-21 17:46:58,999 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 (48)] Forceful destruction successful, exit code 0 [2023-12-21 17:46:59,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /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 [2023-12-21 17:46:59,191 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:46:59,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:46:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash -623812951, now seen corresponding path program 42 times [2023-12-21 17:46:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:46:59,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755330544] [2023-12-21 17:46:59,192 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:46:59,192 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 [2023-12-21 17:46:59,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:46:59,193 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2023-12-21 17:46:59,196 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 (49)] Waiting until timeout for monitored process [2023-12-21 17:46:59,592 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-12-21 17:46:59,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:46:59,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 17:46:59,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:46:59,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:47:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 0 proven. 1387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:00,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:47:02,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:47:02,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:47:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 0 proven. 1387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:04,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:47:04,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755330544] [2023-12-21 17:47:04,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755330544] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:47:04,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:47:04,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 93 [2023-12-21 17:47:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076931988] [2023-12-21 17:47:04,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:47:04,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-12-21 17:47:04,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:47:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-12-21 17:47:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=8262, Unknown=0, NotChecked=0, Total=8556 [2023-12-21 17:47:04,054 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 93 states, 93 states have (on average 2.881720430107527) internal successors, (268), 93 states have internal predecessors, (268), 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) [2023-12-21 17:47:10,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:47:10,574 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2023-12-21 17:47:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-21 17:47:10,575 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.881720430107527) internal successors, (268), 93 states have internal predecessors, (268), 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 136 [2023-12-21 17:47:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:47:10,575 INFO L225 Difference]: With dead ends: 145 [2023-12-21 17:47:10,575 INFO L226 Difference]: Without dead ends: 143 [2023-12-21 17:47:10,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4190 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=608, Invalid=18298, Unknown=0, NotChecked=0, Total=18906 [2023-12-21 17:47:10,577 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 6596 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 6643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:47:10,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1294 Invalid, 6643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 6596 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-21 17:47:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-21 17:47:10,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2023-12-21 17:47:10,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 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) [2023-12-21 17:47:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2023-12-21 17:47:10,641 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 136 [2023-12-21 17:47:10,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:47:10,642 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2023-12-21 17:47:10,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.881720430107527) internal successors, (268), 93 states have internal predecessors, (268), 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) [2023-12-21 17:47:10,642 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2023-12-21 17:47:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 17:47:10,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:47:10,642 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2023-12-21 17:47:10,650 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 (49)] Forceful destruction successful, exit code 0 [2023-12-21 17:47:10,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /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 [2023-12-21 17:47:10,844 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:47:10,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:47:10,844 INFO L85 PathProgramCache]: Analyzing trace with hash 317171432, now seen corresponding path program 43 times [2023-12-21 17:47:10,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:47:10,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933339219] [2023-12-21 17:47:10,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:47:10,845 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 [2023-12-21 17:47:10,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:47:10,846 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-12-21 17:47:10,846 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 (50)] Waiting until timeout for monitored process [2023-12-21 17:47:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:47:11,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-21 17:47:11,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:47:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 22 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:12,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:47:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 22 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:21,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:47:21,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933339219] [2023-12-21 17:47:21,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933339219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:47:21,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:47:21,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 50] total 102 [2023-12-21 17:47:21,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262617431] [2023-12-21 17:47:21,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:47:21,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-12-21 17:47:21,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:47:21,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-12-21 17:47:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1718, Invalid=8584, Unknown=0, NotChecked=0, Total=10302 [2023-12-21 17:47:21,641 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 102 states, 102 states have (on average 2.7058823529411766) internal successors, (276), 102 states have internal predecessors, (276), 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) [2023-12-21 17:48:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:48:12,881 INFO L93 Difference]: Finished difference Result 220 states and 222 transitions. [2023-12-21 17:48:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 17:48:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.7058823529411766) internal successors, (276), 102 states have internal predecessors, (276), 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 139 [2023-12-21 17:48:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:48:12,882 INFO L225 Difference]: With dead ends: 220 [2023-12-21 17:48:12,882 INFO L226 Difference]: Without dead ends: 147 [2023-12-21 17:48:12,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7453 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=4665, Invalid=26135, Unknown=0, NotChecked=0, Total=30800 [2023-12-21 17:48:12,883 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 757 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 4178 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 4507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 4178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:48:12,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1022 Invalid, 4507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 4178 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2023-12-21 17:48:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-21 17:48:12,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2023-12-21 17:48:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 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) [2023-12-21 17:48:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2023-12-21 17:48:12,940 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 139 [2023-12-21 17:48:12,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:48:12,941 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2023-12-21 17:48:12,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.7058823529411766) internal successors, (276), 102 states have internal predecessors, (276), 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) [2023-12-21 17:48:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2023-12-21 17:48:12,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 17:48:12,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:48:12,941 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2023-12-21 17:48:12,947 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 (50)] Forceful destruction successful, exit code 0 [2023-12-21 17:48:13,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /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 [2023-12-21 17:48:13,147 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:48:13,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:48:13,147 INFO L85 PathProgramCache]: Analyzing trace with hash -396194829, now seen corresponding path program 44 times [2023-12-21 17:48:13,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:48:13,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95812006] [2023-12-21 17:48:13,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:48:13,148 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 [2023-12-21 17:48:13,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:48:13,148 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2023-12-21 17:48:13,149 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 (51)] Waiting until timeout for monitored process [2023-12-21 17:48:13,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:48:13,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:48:13,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 17:48:13,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:48:13,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:48:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 0 proven. 1519 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:14,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:48:16,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:48:16,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:48:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 0 proven. 1519 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:18,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:48:18,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95812006] [2023-12-21 17:48:18,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95812006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:48:18,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:48:18,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 97 [2023-12-21 17:48:18,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774137908] [2023-12-21 17:48:18,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:48:18,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-12-21 17:48:18,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:48:18,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-12-21 17:48:18,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=9005, Unknown=0, NotChecked=0, Total=9312 [2023-12-21 17:48:18,220 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 97 states, 97 states have (on average 2.88659793814433) internal successors, (280), 97 states have internal predecessors, (280), 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) [2023-12-21 17:48:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:48:25,950 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2023-12-21 17:48:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 17:48:25,950 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.88659793814433) internal successors, (280), 97 states have internal predecessors, (280), 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 142 [2023-12-21 17:48:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:48:25,950 INFO L225 Difference]: With dead ends: 151 [2023-12-21 17:48:25,951 INFO L226 Difference]: Without dead ends: 149 [2023-12-21 17:48:25,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4576 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=635, Invalid=19957, Unknown=0, NotChecked=0, Total=20592 [2023-12-21 17:48:25,952 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 7641 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 7689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 7641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:48:25,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1463 Invalid, 7689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 7641 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-21 17:48:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-21 17:48:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2023-12-21 17:48:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.013793103448276) internal successors, (147), 145 states have internal predecessors, (147), 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) [2023-12-21 17:48:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2023-12-21 17:48:26,017 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 142 [2023-12-21 17:48:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:48:26,017 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2023-12-21 17:48:26,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.88659793814433) internal successors, (280), 97 states have internal predecessors, (280), 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) [2023-12-21 17:48:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2023-12-21 17:48:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 17:48:26,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:48:26,018 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2023-12-21 17:48:26,025 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 (51)] Forceful destruction successful, exit code 0 [2023-12-21 17:48:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /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 [2023-12-21 17:48:26,220 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:48:26,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:48:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash -464716450, now seen corresponding path program 45 times [2023-12-21 17:48:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:48:26,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120368207] [2023-12-21 17:48:26,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:48:26,221 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 [2023-12-21 17:48:26,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:48:26,226 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2023-12-21 17:48:26,227 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 (52)] Waiting until timeout for monitored process [2023-12-21 17:48:26,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-12-21 17:48:26,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:48:26,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 17:48:26,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:48:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 23 proven. 1564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:28,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:48:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 47 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:36,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:48:36,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120368207] [2023-12-21 17:48:36,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120368207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:48:36,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:48:36,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2023-12-21 17:48:36,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257319424] [2023-12-21 17:48:36,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:48:36,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-12-21 17:48:36,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:48:36,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-12-21 17:48:36,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1564, Invalid=8942, Unknown=0, NotChecked=0, Total=10506 [2023-12-21 17:48:36,217 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand has 103 states, 103 states have (on average 2.796116504854369) internal successors, (288), 103 states have internal predecessors, (288), 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) [2023-12-21 17:49:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:49:18,913 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2023-12-21 17:49:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-21 17:49:18,913 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.796116504854369) internal successors, (288), 103 states have internal predecessors, (288), 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 145 [2023-12-21 17:49:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:49:18,914 INFO L225 Difference]: With dead ends: 229 [2023-12-21 17:49:18,914 INFO L226 Difference]: Without dead ends: 153 [2023-12-21 17:49:18,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7648 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=4724, Invalid=26782, Unknown=0, NotChecked=0, Total=31506 [2023-12-21 17:49:18,915 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 767 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 5537 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 5864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 5537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:49:18,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1102 Invalid, 5864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 5537 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2023-12-21 17:49:18,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-21 17:49:18,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2023-12-21 17:49:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 148 states have internal predecessors, (150), 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) [2023-12-21 17:49:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2023-12-21 17:49:18,977 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 145 [2023-12-21 17:49:18,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:49:18,977 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2023-12-21 17:49:18,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.796116504854369) internal successors, (288), 103 states have internal predecessors, (288), 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) [2023-12-21 17:49:18,978 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2023-12-21 17:49:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 17:49:18,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:49:18,978 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2023-12-21 17:49:18,984 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 (52)] Forceful destruction successful, exit code 0 [2023-12-21 17:49:19,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /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 [2023-12-21 17:49:19,184 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:49:19,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:49:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1865199145, now seen corresponding path program 46 times [2023-12-21 17:49:19,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:49:19,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558823612] [2023-12-21 17:49:19,184 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:49:19,185 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 [2023-12-21 17:49:19,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:49:19,185 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2023-12-21 17:49:19,186 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 (53)] Waiting until timeout for monitored process [2023-12-21 17:49:19,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:49:19,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:49:19,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 17:49:19,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:49:19,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:49:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 0 proven. 1657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:49:20,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:49:23,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:49:23,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:49:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 0 proven. 1657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:49:24,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:49:24,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558823612] [2023-12-21 17:49:24,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558823612] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:49:24,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:49:24,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 101 [2023-12-21 17:49:24,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399592797] [2023-12-21 17:49:24,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:49:24,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-12-21 17:49:24,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:49:24,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-12-21 17:49:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=9780, Unknown=0, NotChecked=0, Total=10100 [2023-12-21 17:49:24,685 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand has 101 states, 101 states have (on average 2.891089108910891) internal successors, (292), 101 states have internal predecessors, (292), 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) [2023-12-21 17:49:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:49:32,675 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2023-12-21 17:49:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-21 17:49:32,676 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.891089108910891) internal successors, (292), 101 states have internal predecessors, (292), 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 148 [2023-12-21 17:49:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:49:32,676 INFO L225 Difference]: With dead ends: 157 [2023-12-21 17:49:32,676 INFO L226 Difference]: Without dead ends: 155 [2023-12-21 17:49:32,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4979 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=662, Invalid=21688, Unknown=0, NotChecked=0, Total=22350 [2023-12-21 17:49:32,678 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 7996 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 8046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 7996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:49:32,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1573 Invalid, 8046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 7996 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-21 17:49:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-21 17:49:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2023-12-21 17:49:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 151 states have internal predecessors, (153), 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) [2023-12-21 17:49:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2023-12-21 17:49:32,752 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2023-12-21 17:49:32,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:49:32,752 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2023-12-21 17:49:32,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.891089108910891) internal successors, (292), 101 states have internal predecessors, (292), 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) [2023-12-21 17:49:32,752 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2023-12-21 17:49:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 17:49:32,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:49:32,753 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2023-12-21 17:49:32,759 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 (53)] Ended with exit code 0 [2023-12-21 17:49:32,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /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 [2023-12-21 17:49:32,953 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:49:32,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:49:32,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2133842072, now seen corresponding path program 47 times [2023-12-21 17:49:32,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:49:32,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725483872] [2023-12-21 17:49:32,954 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:49:32,954 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 [2023-12-21 17:49:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:49:32,955 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2023-12-21 17:49:32,963 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 (54)] Waiting until timeout for monitored process [2023-12-21 17:49:33,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-12-21 17:49:33,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:49:33,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 17:49:33,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:49:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 24 proven. 1704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:49:35,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:49:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 24 proven. 1704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:49:44,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:49:44,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725483872] [2023-12-21 17:49:44,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725483872] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:49:44,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:49:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 108 [2023-12-21 17:49:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441676439] [2023-12-21 17:49:44,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:49:44,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2023-12-21 17:49:44,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:49:44,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2023-12-21 17:49:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=9704, Unknown=0, NotChecked=0, Total=11556 [2023-12-21 17:49:44,289 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 108 states, 108 states have (on average 2.7777777777777777) internal successors, (300), 108 states have internal predecessors, (300), 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) [2023-12-21 17:50:41,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:50:41,128 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2023-12-21 17:50:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-21 17:50:41,129 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.7777777777777777) internal successors, (300), 108 states have internal predecessors, (300), 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 151 [2023-12-21 17:50:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:50:41,130 INFO L225 Difference]: With dead ends: 238 [2023-12-21 17:50:41,130 INFO L226 Difference]: Without dead ends: 159 [2023-12-21 17:50:41,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8057 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=5187, Invalid=28853, Unknown=0, NotChecked=0, Total=34040 [2023-12-21 17:50:41,131 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 823 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 5491 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 5845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 5491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:50:41,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1184 Invalid, 5845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 5491 Invalid, 0 Unknown, 0 Unchecked, 24.6s Time] [2023-12-21 17:50:41,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-21 17:50:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2023-12-21 17:50:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 154 states have internal predecessors, (156), 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) [2023-12-21 17:50:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2023-12-21 17:50:41,206 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 151 [2023-12-21 17:50:41,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:50:41,206 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2023-12-21 17:50:41,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.7777777777777777) internal successors, (300), 108 states have internal predecessors, (300), 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) [2023-12-21 17:50:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2023-12-21 17:50:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 17:50:41,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:50:41,207 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1] [2023-12-21 17:50:41,213 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 (54)] Ended with exit code 0 [2023-12-21 17:50:41,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /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 [2023-12-21 17:50:41,407 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:50:41,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:50:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1673319411, now seen corresponding path program 48 times [2023-12-21 17:50:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:50:41,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736013565] [2023-12-21 17:50:41,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:50:41,408 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 [2023-12-21 17:50:41,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:50:41,409 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2023-12-21 17:50:41,410 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 (55)] Waiting until timeout for monitored process [2023-12-21 17:50:42,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2023-12-21 17:50:42,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:50:42,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 17:50:42,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:50:42,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:50:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 0 proven. 1801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:50:43,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:50:45,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:50:45,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:50:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 0 proven. 1801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:50:47,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:50:47,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736013565] [2023-12-21 17:50:47,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736013565] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:50:47,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:50:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 105 [2023-12-21 17:50:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201631534] [2023-12-21 17:50:47,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:50:47,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-12-21 17:50:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:50:47,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-12-21 17:50:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=10587, Unknown=0, NotChecked=0, Total=10920 [2023-12-21 17:50:47,715 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand has 105 states, 105 states have (on average 2.895238095238095) internal successors, (304), 105 states have internal predecessors, (304), 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) [2023-12-21 17:50:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:50:56,732 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2023-12-21 17:50:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-21 17:50:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.895238095238095) internal successors, (304), 105 states have internal predecessors, (304), 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 154 [2023-12-21 17:50:56,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:50:56,732 INFO L225 Difference]: With dead ends: 163 [2023-12-21 17:50:56,732 INFO L226 Difference]: Without dead ends: 161 [2023-12-21 17:50:56,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5399 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=689, Invalid=23491, Unknown=0, NotChecked=0, Total=24180 [2023-12-21 17:50:56,734 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 9704 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 9757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 9704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:50:56,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1843 Invalid, 9757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 9704 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-21 17:50:56,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-21 17:50:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 158. [2023-12-21 17:50:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.0127388535031847) internal successors, (159), 157 states have internal predecessors, (159), 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) [2023-12-21 17:50:56,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2023-12-21 17:50:56,809 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 154 [2023-12-21 17:50:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:50:56,809 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2023-12-21 17:50:56,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.895238095238095) internal successors, (304), 105 states have internal predecessors, (304), 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) [2023-12-21 17:50:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2023-12-21 17:50:56,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 17:50:56,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:50:56,810 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2023-12-21 17:50:56,816 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 (55)] Ended with exit code 0 [2023-12-21 17:50:57,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /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 [2023-12-21 17:50:57,010 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:50:57,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:50:57,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1821526690, now seen corresponding path program 49 times [2023-12-21 17:50:57,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:50:57,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70282242] [2023-12-21 17:50:57,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:50:57,011 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 [2023-12-21 17:50:57,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:50:57,012 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2023-12-21 17:50:57,013 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 (56)] Waiting until timeout for monitored process [2023-12-21 17:50:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:50:57,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-21 17:50:57,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:50:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 25 proven. 1850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:50:59,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:51:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 25 proven. 1850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:51:11,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:51:11,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70282242] [2023-12-21 17:51:11,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70282242] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:51:11,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:51:11,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 56] total 113 [2023-12-21 17:51:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609243461] [2023-12-21 17:51:11,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:51:11,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-21 17:51:11,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:51:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-21 17:51:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2150, Invalid=10506, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 17:51:11,085 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand has 113 states, 113 states have (on average 2.7610619469026547) internal successors, (312), 113 states have internal predecessors, (312), 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) [2023-12-21 17:52:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:52:22,697 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2023-12-21 17:52:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-21 17:52:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.7610619469026547) internal successors, (312), 113 states have internal predecessors, (312), 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 157 [2023-12-21 17:52:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:52:22,698 INFO L225 Difference]: With dead ends: 247 [2023-12-21 17:52:22,698 INFO L226 Difference]: Without dead ends: 165 [2023-12-21 17:52:22,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9074 ImplicationChecksByTransitivity, 52.6s TimeCoverageRelationStatistics Valid=5814, Invalid=32016, Unknown=0, NotChecked=0, Total=37830 [2023-12-21 17:52:22,700 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 932 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 5426 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 5817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 5426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:52:22,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1298 Invalid, 5817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 5426 Invalid, 0 Unknown, 0 Unchecked, 31.2s Time] [2023-12-21 17:52:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-21 17:52:22,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-12-21 17:52:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.0125) internal successors, (162), 160 states have internal predecessors, (162), 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) [2023-12-21 17:52:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2023-12-21 17:52:22,778 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 157 [2023-12-21 17:52:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:52:22,778 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2023-12-21 17:52:22,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.7610619469026547) internal successors, (312), 113 states have internal predecessors, (312), 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) [2023-12-21 17:52:22,778 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2023-12-21 17:52:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 17:52:22,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:52:22,778 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1] [2023-12-21 17:52:22,784 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 (56)] Ended with exit code 0 [2023-12-21 17:52:22,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /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 [2023-12-21 17:52:22,979 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:52:22,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:52:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash -30700119, now seen corresponding path program 50 times [2023-12-21 17:52:22,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:52:22,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114554017] [2023-12-21 17:52:22,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:52:22,980 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 [2023-12-21 17:52:22,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:52:22,981 INFO L229 MonitoredProcess]: Starting monitored process 57 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) [2023-12-21 17:52:22,981 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 (57)] Waiting until timeout for monitored process [2023-12-21 17:52:23,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:52:23,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:52:23,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 17:52:23,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:52:23,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:52:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 0 proven. 1951 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:52:24,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:52:27,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:52:27,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:52:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 0 proven. 1951 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:52:29,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:52:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114554017] [2023-12-21 17:52:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114554017] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:52:29,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:52:29,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 109 [2023-12-21 17:52:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986784870] [2023-12-21 17:52:29,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:52:29,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-21 17:52:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:52:29,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-21 17:52:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=11426, Unknown=0, NotChecked=0, Total=11772 [2023-12-21 17:52:29,463 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 109 states, 109 states have (on average 2.8990825688073394) internal successors, (316), 109 states have internal predecessors, (316), 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) [2023-12-21 17:52:39,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:52:39,429 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2023-12-21 17:52:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-12-21 17:52:39,430 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.8990825688073394) internal successors, (316), 109 states have internal predecessors, (316), 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 160 [2023-12-21 17:52:39,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:52:39,430 INFO L225 Difference]: With dead ends: 169 [2023-12-21 17:52:39,430 INFO L226 Difference]: Without dead ends: 167 [2023-12-21 17:52:39,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5836 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=716, Invalid=25366, Unknown=0, NotChecked=0, Total=26082 [2023-12-21 17:52:39,431 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 10883 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 10938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 10883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:52:39,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2093 Invalid, 10938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 10883 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-21 17:52:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-21 17:52:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2023-12-21 17:52:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0122699386503067) internal successors, (165), 163 states have internal predecessors, (165), 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) [2023-12-21 17:52:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2023-12-21 17:52:39,505 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 160 [2023-12-21 17:52:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:52:39,505 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2023-12-21 17:52:39,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.8990825688073394) internal successors, (316), 109 states have internal predecessors, (316), 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) [2023-12-21 17:52:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2023-12-21 17:52:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 17:52:39,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:52:39,506 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2023-12-21 17:52:39,512 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 (57)] Ended with exit code 0 [2023-12-21 17:52:39,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /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 [2023-12-21 17:52:39,707 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:52:39,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:52:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash 246093800, now seen corresponding path program 51 times [2023-12-21 17:52:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:52:39,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955192701] [2023-12-21 17:52:39,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:52:39,708 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 [2023-12-21 17:52:39,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:52:39,709 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2023-12-21 17:52:39,709 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 (58)] Waiting until timeout for monitored process [2023-12-21 17:52:40,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-12-21 17:52:40,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:52:40,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 17:52:40,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:52:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 26 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:52:42,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:52:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 26 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:52:54,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:52:54,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955192701] [2023-12-21 17:52:54,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955192701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:52:54,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:52:54,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 59] total 116 [2023-12-21 17:52:54,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753142463] [2023-12-21 17:52:54,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:52:54,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2023-12-21 17:52:54,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:52:54,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2023-12-21 17:52:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2320, Invalid=11020, Unknown=0, NotChecked=0, Total=13340 [2023-12-21 17:52:54,710 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand has 116 states, 116 states have (on average 2.793103448275862) internal successors, (324), 116 states have internal predecessors, (324), 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... [2023-12-21 17:53:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 17:53:57,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5849 ImplicationChecksByTransitivity, 58.2s TimeCoverageRelationStatistics Valid=3788, Invalid=23272, Unknown=0, NotChecked=0, Total=27060 [2023-12-21 17:53:57,340 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 406 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 3710 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 3901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:53:57,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 397 Invalid, 3901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 3710 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-12-21 17:53:57,341 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 17:53:57,344 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 (58)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 17:53:57,346 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 [2023-12-21 17:53:57,351 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 (58)] Forceful destruction successful, exit code 0 [2023-12-21 17:53:57,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /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 [2023-12-21 17:53:57,542 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (164states) and FLOYD_HOARE automaton (currently 52 states, 116 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-4-1 term,while SimplifyDDA2 was simplifying 4 xjuncts wrt. a ∧-20-4-1 context. [2023-12-21 17:53:57,548 INFO L445 BasicCegarLoop]: Path program histogram: [51, 3, 1, 1, 1] [2023-12-21 17:53:57,563 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 17:53:57,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:53:57 BoogieIcfgContainer [2023-12-21 17:53:57,565 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 17:53:57,566 INFO L158 Benchmark]: Toolchain (without parser) took 868559.74ms. Allocated memory was 220.2MB in the beginning and 324.0MB in the end (delta: 103.8MB). Free memory was 165.7MB in the beginning and 262.2MB in the end (delta: -96.6MB). Peak memory consumption was 180.1MB. Max. memory is 8.0GB. [2023-12-21 17:53:57,566 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 220.2MB. Free memory is still 168.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 17:53:57,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.88ms. Allocated memory is still 220.2MB. Free memory was 165.3MB in the beginning and 153.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 17:53:57,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.10ms. Allocated memory is still 220.2MB. Free memory was 153.8MB in the beginning and 152.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 17:53:57,566 INFO L158 Benchmark]: Boogie Preprocessor took 25.84ms. Allocated memory is still 220.2MB. Free memory was 152.4MB in the beginning and 150.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 17:53:57,566 INFO L158 Benchmark]: RCFGBuilder took 249.57ms. Allocated memory is still 220.2MB. Free memory was 150.3MB in the beginning and 138.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 17:53:57,566 INFO L158 Benchmark]: TraceAbstraction took 868065.18ms. Allocated memory was 220.2MB in the beginning and 324.0MB in the end (delta: 103.8MB). Free memory was 137.4MB in the beginning and 262.2MB in the end (delta: -124.9MB). Peak memory consumption was 151.8MB. Max. memory is 8.0GB. [2023-12-21 17:53:57,567 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 220.2MB. Free memory is still 168.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.88ms. Allocated memory is still 220.2MB. Free memory was 165.3MB in the beginning and 153.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.10ms. Allocated memory is still 220.2MB. Free memory was 153.8MB in the beginning and 152.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.84ms. Allocated memory is still 220.2MB. Free memory was 152.4MB in the beginning and 150.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 249.57ms. Allocated memory is still 220.2MB. Free memory was 150.3MB in the beginning and 138.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 868065.18ms. Allocated memory was 220.2MB in the beginning and 324.0MB in the end (delta: 103.8MB). Free memory was 137.4MB in the beginning and 262.2MB in the end (delta: -124.9MB). Peak memory consumption was 151.8MB. 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: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was constructing difference of abstraction (164states) and FLOYD_HOARE automaton (currently 52 states, 116 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-4-1 term,while SimplifyDDA2 was simplifying 4 xjuncts wrt. a ∧-20-4-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 868.0s, OverallIterations: 57, TraceHistogramMax: 27, PathProgramHistogramMax: 51, EmptinessCheckTime: 0.0s, AutomataDifference: 643.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10943 SdHoareTripleChecker+Valid, 295.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10943 mSDsluCounter, 32701 SdHoareTripleChecker+Invalid, 281.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31663 mSDsCounter, 4953 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 156317 IncrementalHoareTripleChecker+Invalid, 161270 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4953 mSolverCounterUnsat, 1038 mSDtfsCounter, 156317 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11042 GetRequests, 5919 SyntacticMatches, 0 SemanticMatches, 5122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146494 ImplicationChecksByTransitivity, 513.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=56, InterpolantAutomatonStates: 2797, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 56 MinimizatonAttempts, 642 StatesRemovedByMinimization, 55 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 8.0s SatisfiabilityAnalysisTime, 200.8s InterpolantComputationTime, 4608 NumberOfCodeBlocks, 4569 NumberOfCodeBlocksAsserted, 419 NumberOfCheckSat, 9090 ConstructedInterpolants, 45 QuantifiedInterpolants, 81668 SizeOfPredicates, 321 NumberOfNonLiveVariables, 10164 ConjunctsInSsa, 1814 ConjunctsInUnsatCore, 112 InterpolantComputations, 2 PerfectInterpolantSequences, 1424/73182 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