/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops/linear_sea.ch.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:07:32,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:07:32,905 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 22:07:32,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:07:32,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:07:32,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:07:32,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:07:32,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:07:32,940 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:07:32,943 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:07:32,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:07:32,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:07:32,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:07:32,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:07:32,945 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:07:32,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:07:32,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:07:32,946 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:07:32,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:07:32,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:07:32,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:07:32,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:07:32,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:07:32,947 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:07:32,947 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:07:32,947 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:07:32,948 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:07:32,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:07:32,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:07:32,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:07:32,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:07:32,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:07:32,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:07:32,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:07:32,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:07:32,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:07:32,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:07:32,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:07:32,950 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:07:32,950 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:07:32,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:07:32,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:07:32,950 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:07:32,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:07:32,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:07:32,951 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:07:32,951 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:07:33,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:07:33,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:07:33,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:07:33,161 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:07:33,161 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:07:33,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_sea.ch.c [2023-12-24 22:07:34,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:07:34,405 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:07:34,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_sea.ch.c [2023-12-24 22:07:34,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9dd43ff0/08bc1ce036bd4685aee8b949210737cc/FLAG9a3787e54 [2023-12-24 22:07:34,810 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9dd43ff0/08bc1ce036bd4685aee8b949210737cc [2023-12-24 22:07:34,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:07:34,812 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:07:34,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:07:34,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:07:34,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:07:34,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:07:34" (1/1) ... [2023-12-24 22:07:34,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d0264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:34, skipping insertion in model container [2023-12-24 22:07:34,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:07:34" (1/1) ... [2023-12-24 22:07:34,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:07:34,958 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_sea.ch.c[383,396] [2023-12-24 22:07:34,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:07:34,984 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:07:34,992 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_sea.ch.c[383,396] [2023-12-24 22:07:34,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:07:35,006 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:07:35,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35 WrapperNode [2023-12-24 22:07:35,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:07:35,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:07:35,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:07:35,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:07:35,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,036 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 54 [2023-12-24 22:07:35,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:07:35,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:07:35,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:07:35,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:07:35,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,065 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]. [2023-12-24 22:07:35,066 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:07:35,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:07:35,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:07:35,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:07:35,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (1/1) ... [2023-12-24 22:07:35,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:07:35,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:07:35,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 22:07:35,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 22:07:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:07:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:07:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 22:07:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-24 22:07:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 22:07:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 22:07:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:07:35,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:07:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 22:07:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 22:07:35,224 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:07:35,226 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:07:35,412 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:07:35,458 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:07:35,459 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 22:07:35,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:07:35 BoogieIcfgContainer [2023-12-24 22:07:35,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:07:35,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:07:35,461 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:07:35,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:07:35,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:07:34" (1/3) ... [2023-12-24 22:07:35,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fef728c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:07:35, skipping insertion in model container [2023-12-24 22:07:35,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:07:35" (2/3) ... [2023-12-24 22:07:35,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fef728c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:07:35, skipping insertion in model container [2023-12-24 22:07:35,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:07:35" (3/3) ... [2023-12-24 22:07:35,465 INFO L112 eAbstractionObserver]: Analyzing ICFG linear_sea.ch.c [2023-12-24 22:07:35,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:07:35,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:07:35,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:07:35,523 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;@209a5a49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:07:35,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:07:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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) [2023-12-24 22:07:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-24 22:07:35,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:35,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:35,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:35,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash 357425661, now seen corresponding path program 1 times [2023-12-24 22:07:35,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:35,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970833860] [2023-12-24 22:07:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:07:35,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:35,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:35,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:35,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 22:07:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:07:35,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 22:07:35,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:35,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:07:35,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970833860] [2023-12-24 22:07:35,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970833860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:07:35,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:07:35,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:07:35,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390275981] [2023-12-24 22:07:35,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:07:35,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 22:07:35,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:35,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 22:07:35,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 22:07:35,759 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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) 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) [2023-12-24 22:07:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:07:35,783 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2023-12-24 22:07:35,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 22:07:35,785 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 [2023-12-24 22:07:35,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:07:35,791 INFO L225 Difference]: With dead ends: 21 [2023-12-24 22:07:35,792 INFO L226 Difference]: Without dead ends: 10 [2023-12-24 22:07:35,794 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 [2023-12-24 22:07:35,799 INFO L413 NwaCegarLoop]: 13 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, 13 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 [2023-12-24 22:07:35,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:07:35,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-24 22:07:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-24 22:07:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-24 22:07:35,825 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2023-12-24 22:07:35,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:07:35,826 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-24 22:07:35,826 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) [2023-12-24 22:07:35,826 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-24 22:07:35,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-24 22:07:35,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:35,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:35,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 22:07:36,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:36,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:36,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:36,057 INFO L85 PathProgramCache]: Analyzing trace with hash 881186324, now seen corresponding path program 1 times [2023-12-24 22:07:36,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:36,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697067134] [2023-12-24 22:07:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:07:36,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:36,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:36,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:36,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 22:07:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:07:36,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 22:07:36,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:36,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:07:36,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:36,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697067134] [2023-12-24 22:07:36,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697067134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:07:36,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:07:36,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 22:07:36,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557546017] [2023-12-24 22:07:36,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:07:36,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 22:07:36,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:36,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 22:07:36,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 22:07:36,152 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:07:36,174 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-12-24 22:07:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 22:07:36,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-24 22:07:36,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:07:36,175 INFO L225 Difference]: With dead ends: 14 [2023-12-24 22:07:36,175 INFO L226 Difference]: Without dead ends: 10 [2023-12-24 22:07:36,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 22:07:36,176 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:07:36,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:07:36,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-24 22:07:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-24 22:07:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-12-24 22:07:36,178 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2023-12-24 22:07:36,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:07:36,179 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-12-24 22:07:36,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-12-24 22:07:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-24 22:07:36,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:36,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:36,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-24 22:07:36,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:36,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:36,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash 881245906, now seen corresponding path program 1 times [2023-12-24 22:07:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:36,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165637857] [2023-12-24 22:07:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:07:36,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:36,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:36,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:36,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 22:07:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:07:36,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 22:07:36,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:36,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:07:36,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:36,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165637857] [2023-12-24 22:07:36,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165637857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:07:36,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:07:36,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 22:07:36,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565107406] [2023-12-24 22:07:36,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:07:36,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 22:07:36,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:36,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 22:07:36,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 22:07:36,556 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:07:36,606 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2023-12-24 22:07:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 22:07:36,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-24 22:07:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:07:36,608 INFO L225 Difference]: With dead ends: 18 [2023-12-24 22:07:36,608 INFO L226 Difference]: Without dead ends: 13 [2023-12-24 22:07:36,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 22:07:36,609 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:07:36,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 9 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:07:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-24 22:07:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-24 22:07:36,613 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) [2023-12-24 22:07:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-24 22:07:36,613 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2023-12-24 22:07:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:07:36,614 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-24 22:07:36,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-24 22:07:36,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-24 22:07:36,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:36,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:36,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 22:07:36,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:36,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:36,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1392530212, now seen corresponding path program 1 times [2023-12-24 22:07:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046198589] [2023-12-24 22:07:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:07:36,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:36,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:36,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:36,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 22:07:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:07:36,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 22:07:36,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:36,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:07:36,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:36,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046198589] [2023-12-24 22:07:36,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046198589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:07:36,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:07:36,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 22:07:36,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657091505] [2023-12-24 22:07:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:07:36,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 22:07:36,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:36,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 22:07:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 22:07:36,885 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:07:36,903 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-12-24 22:07:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 22:07:36,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-12-24 22:07:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:07:36,905 INFO L225 Difference]: With dead ends: 23 [2023-12-24 22:07:36,905 INFO L226 Difference]: Without dead ends: 14 [2023-12-24 22:07:36,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 22:07:36,906 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:07:36,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:07:36,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-24 22:07:36,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-24 22:07:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-24 22:07:36,909 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2023-12-24 22:07:36,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:07:36,909 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-24 22:07:36,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:36,909 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-24 22:07:36,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-24 22:07:36,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:36,910 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:36,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 22:07:37,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:37,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:37,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:37,113 INFO L85 PathProgramCache]: Analyzing trace with hash 712471842, now seen corresponding path program 1 times [2023-12-24 22:07:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:37,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488075109] [2023-12-24 22:07:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:07:37,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:37,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:37,115 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:37,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 22:07:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:07:37,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 22:07:37,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:37,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:07:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:37,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:37,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488075109] [2023-12-24 22:07:37,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488075109] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:07:37,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:07:37,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-24 22:07:37,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405116408] [2023-12-24 22:07:37,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:07:37,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 22:07:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:37,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 22:07:37,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:07:37,346 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:07:37,427 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2023-12-24 22:07:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 22:07:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 12 [2023-12-24 22:07:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:07:37,428 INFO L225 Difference]: With dead ends: 23 [2023-12-24 22:07:37,428 INFO L226 Difference]: Without dead ends: 17 [2023-12-24 22:07:37,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-24 22:07:37,429 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:07:37,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 17 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:07:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-24 22:07:37,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-24 22:07:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) [2023-12-24 22:07:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-12-24 22:07:37,432 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2023-12-24 22:07:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:07:37,433 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-12-24 22:07:37,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-12-24 22:07:37,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-24 22:07:37,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:37,433 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:37,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-24 22:07:37,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:37,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:37,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2123932462, now seen corresponding path program 2 times [2023-12-24 22:07:37,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:37,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406727024] [2023-12-24 22:07:37,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:07:37,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:37,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:37,641 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:37,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 22:07:37,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:07:37,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:07:37,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 22:07:37,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:37,799 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:07:37,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:07:37,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:07:37,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:07:37,890 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-24 22:07:37,906 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 9 treesize of output 3 [2023-12-24 22:07:38,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:07:38,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:07:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:38,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:07:38,354 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 36 treesize of output 34 [2023-12-24 22:07:38,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:07:38,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:07:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:38,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:38,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406727024] [2023-12-24 22:07:38,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406727024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:07:38,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:07:38,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-24 22:07:38,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775714820] [2023-12-24 22:07:38,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:07:38,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 22:07:38,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:38,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 22:07:38,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-24 22:07:38,363 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:07:38,677 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2023-12-24 22:07:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 22:07:38,677 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-24 22:07:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:07:38,678 INFO L225 Difference]: With dead ends: 31 [2023-12-24 22:07:38,678 INFO L226 Difference]: Without dead ends: 23 [2023-12-24 22:07:38,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-12-24 22:07:38,678 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:07:38,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 24 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:07:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-24 22:07:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-24 22:07:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-12-24 22:07:38,683 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2023-12-24 22:07:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:07:38,683 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-12-24 22:07:38,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-12-24 22:07:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-24 22:07:38,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:38,684 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:38,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 22:07:38,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:38,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:38,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1093043502, now seen corresponding path program 3 times [2023-12-24 22:07:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:38,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361181320] [2023-12-24 22:07:38,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:07:38,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:38,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:38,888 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:38,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 22:07:38,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-24 22:07:38,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:07:38,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 22:07:38,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:39,009 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:07:39,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:07:39,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:07:39,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:07:39,070 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-24 22:07:39,077 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 9 treesize of output 3 [2023-12-24 22:07:39,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:07:39,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:07:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:39,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:07:41,013 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 36 treesize of output 34 [2023-12-24 22:07:41,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:07:41,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:07:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:41,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:41,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361181320] [2023-12-24 22:07:41,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361181320] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:07:41,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:07:41,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-24 22:07:41,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079197351] [2023-12-24 22:07:41,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:07:41,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 22:07:41,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:41,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 22:07:41,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2023-12-24 22:07:41,023 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:07:41,861 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-12-24 22:07:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 22:07:41,861 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-24 22:07:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:07:41,862 INFO L225 Difference]: With dead ends: 38 [2023-12-24 22:07:41,862 INFO L226 Difference]: Without dead ends: 29 [2023-12-24 22:07:41,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=275, Invalid=1057, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 22:07:41,863 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 45 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:07:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 46 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:07:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-24 22:07:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-24 22:07:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2023-12-24 22:07:41,868 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 21 [2023-12-24 22:07:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:07:41,868 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2023-12-24 22:07:41,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:41,868 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2023-12-24 22:07:41,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 22:07:41,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:41,869 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:41,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 22:07:42,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:42,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:42,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:42,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1715660590, now seen corresponding path program 4 times [2023-12-24 22:07:42,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:42,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514298918] [2023-12-24 22:07:42,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:07:42,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:42,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:42,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:42,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 22:07:42,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:07:42,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:07:42,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 22:07:42,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:42,201 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:07:42,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:07:42,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:07:42,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:07:42,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 9 [2023-12-24 22:07:42,260 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 9 treesize of output 3 [2023-12-24 22:07:42,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:07:42,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:07:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:43,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:07:44,500 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 36 treesize of output 34 [2023-12-24 22:07:44,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:07:44,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:07:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:44,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:44,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514298918] [2023-12-24 22:07:44,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514298918] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:07:44,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:07:44,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-12-24 22:07:44,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765297532] [2023-12-24 22:07:44,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:07:44,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-24 22:07:44,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:44,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-24 22:07:44,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2023-12-24 22:07:44,509 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 27 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:45,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:07:45,952 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2023-12-24 22:07:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 22:07:45,952 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 27 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-24 22:07:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:07:45,954 INFO L225 Difference]: With dead ends: 43 [2023-12-24 22:07:45,954 INFO L226 Difference]: Without dead ends: 35 [2023-12-24 22:07:45,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=297, Invalid=1509, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 22:07:45,957 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 59 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:07:45,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 42 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 22:07:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-24 22:07:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-24 22:07:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2023-12-24 22:07:45,970 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 27 [2023-12-24 22:07:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:07:45,970 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2023-12-24 22:07:45,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 27 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2023-12-24 22:07:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 22:07:45,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:45,972 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:45,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 22:07:46,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:46,175 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:46,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:46,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1762511150, now seen corresponding path program 5 times [2023-12-24 22:07:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:46,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626793275] [2023-12-24 22:07:46,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:07:46,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:46,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:46,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:46,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 22:07:46,237 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-24 22:07:46,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:07:46,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 22:07:46,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:46,308 INFO L349 Elim1Store]: treesize reduction 42, result has 31.1 percent of original size [2023-12-24 22:07:46,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 80 [2023-12-24 22:07:46,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2023-12-24 22:07:46,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2023-12-24 22:07:46,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 22 [2023-12-24 22:07:46,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:07:46,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 22:07:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:47,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:07:49,117 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 36 treesize of output 34 [2023-12-24 22:07:49,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:07:49,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:07:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:49,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:49,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626793275] [2023-12-24 22:07:49,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626793275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:07:49,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:07:49,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-12-24 22:07:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629916386] [2023-12-24 22:07:49,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:07:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-24 22:07:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:49,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-24 22:07:49,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 22:07:49,126 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 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) [2023-12-24 22:07:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:07:51,386 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2023-12-24 22:07:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 22:07:51,386 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 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 33 [2023-12-24 22:07:51,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:07:51,387 INFO L225 Difference]: With dead ends: 51 [2023-12-24 22:07:51,387 INFO L226 Difference]: Without dead ends: 45 [2023-12-24 22:07:51,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=412, Invalid=3010, Unknown=0, NotChecked=0, Total=3422 [2023-12-24 22:07:51,388 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 79 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:07:51,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 49 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:07:51,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-24 22:07:51,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2023-12-24 22:07:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:07:51,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2023-12-24 22:07:51,398 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 33 [2023-12-24 22:07:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:07:51,398 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2023-12-24 22:07:51,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 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) [2023-12-24 22:07:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2023-12-24 22:07:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 22:07:51,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:07:51,399 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:07:51,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 22:07:51,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:51,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:07:51,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:07:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1819769452, now seen corresponding path program 1 times [2023-12-24 22:07:51,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:07:51,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853099386] [2023-12-24 22:07:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:07:51,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:07:51,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:07:51,604 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:07:51,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 22:07:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:07:51,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 22:07:51,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:07:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:52,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:07:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:07:56,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:07:56,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853099386] [2023-12-24 22:07:56,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853099386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:07:56,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:07:56,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2023-12-24 22:07:56,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693424394] [2023-12-24 22:07:56,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:07:56,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-24 22:07:56,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:07:56,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-24 22:07:56,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=1487, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 22:07:56,696 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 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) [2023-12-24 22:08:27,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:08:27,210 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2023-12-24 22:08:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-24 22:08:27,210 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 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) Word has length 33 [2023-12-24 22:08:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:08:27,212 INFO L225 Difference]: With dead ends: 102 [2023-12-24 22:08:27,212 INFO L226 Difference]: Without dead ends: 88 [2023-12-24 22:08:27,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3468 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=2729, Invalid=8613, Unknown=0, NotChecked=0, Total=11342 [2023-12-24 22:08:27,215 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 332 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:08:27,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 69 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-24 22:08:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-24 22:08:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 65. [2023-12-24 22:08:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.15625) internal successors, (74), 64 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:08:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2023-12-24 22:08:27,227 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 33 [2023-12-24 22:08:27,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:08:27,227 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2023-12-24 22:08:27,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 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) [2023-12-24 22:08:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2023-12-24 22:08:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-24 22:08:27,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:08:27,228 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:08:27,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-24 22:08:27,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:08:27,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:08:27,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:08:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash 324588754, now seen corresponding path program 6 times [2023-12-24 22:08:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:08:27,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961297035] [2023-12-24 22:08:27,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:08:27,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:08:27,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:08:27,436 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:08:27,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 22:08:27,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-24 22:08:27,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:08:27,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 22:08:27,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:08:27,613 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:08:27,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:08:27,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:08:27,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:08:27,662 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-24 22:08:27,672 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 9 treesize of output 3 [2023-12-24 22:08:28,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:08:28,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:08:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:08:29,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:08:32,354 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 36 treesize of output 34 [2023-12-24 22:08:32,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:08:32,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:08:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:08:32,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:08:32,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961297035] [2023-12-24 22:08:32,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961297035] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:08:32,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:08:32,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 44 [2023-12-24 22:08:32,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836044668] [2023-12-24 22:08:32,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:08:32,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 22:08:32,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:08:32,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 22:08:32,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:08:32,365 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 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) [2023-12-24 22:08:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:08:35,815 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2023-12-24 22:08:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 22:08:35,816 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 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) Word has length 39 [2023-12-24 22:08:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:08:35,817 INFO L225 Difference]: With dead ends: 73 [2023-12-24 22:08:35,817 INFO L226 Difference]: Without dead ends: 65 [2023-12-24 22:08:35,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=477, Invalid=4215, Unknown=0, NotChecked=0, Total=4692 [2023-12-24 22:08:35,818 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 62 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:08:35,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 71 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 22:08:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-24 22:08:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-24 22:08:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.125) internal successors, (72), 64 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) [2023-12-24 22:08:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2023-12-24 22:08:35,846 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 39 [2023-12-24 22:08:35,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:08:35,847 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2023-12-24 22:08:35,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 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) [2023-12-24 22:08:35,847 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2023-12-24 22:08:35,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-24 22:08:35,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:08:35,847 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:08:35,851 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 (12)] Ended with exit code 0 [2023-12-24 22:08:36,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:08:36,050 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:08:36,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:08:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1137767122, now seen corresponding path program 7 times [2023-12-24 22:08:36,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:08:36,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771685090] [2023-12-24 22:08:36,051 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:08:36,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:08:36,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:08:36,052 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:08:36,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 22:08:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:08:36,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 22:08:36,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:08:36,196 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:08:36,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:08:36,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:08:36,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:08:36,259 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-24 22:08:36,272 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 9 treesize of output 3 [2023-12-24 22:08:37,154 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:08:37,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:08:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:08:38,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:08:42,417 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 36 treesize of output 34 [2023-12-24 22:08:42,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:08:42,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:08:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:08:42,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:08:42,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771685090] [2023-12-24 22:08:42,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771685090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:08:42,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:08:42,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 52 [2023-12-24 22:08:42,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137008714] [2023-12-24 22:08:42,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:08:42,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-24 22:08:42,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:08:42,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-24 22:08:42,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2417, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 22:08:42,428 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 52 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 52 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) [2023-12-24 22:08:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:08:46,841 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2023-12-24 22:08:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-24 22:08:46,842 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 52 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) Word has length 45 [2023-12-24 22:08:46,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:08:46,843 INFO L225 Difference]: With dead ends: 73 [2023-12-24 22:08:46,843 INFO L226 Difference]: Without dead ends: 65 [2023-12-24 22:08:46,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=628, Invalid=5852, Unknown=0, NotChecked=0, Total=6480 [2023-12-24 22:08:46,844 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 85 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:08:46,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 74 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:08:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-24 22:08:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-24 22:08:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.09375) internal successors, (70), 64 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:08:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2023-12-24 22:08:46,856 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 45 [2023-12-24 22:08:46,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:08:46,856 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2023-12-24 22:08:46,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 52 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) [2023-12-24 22:08:46,857 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2023-12-24 22:08:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-24 22:08:46,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:08:46,857 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:08:46,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-24 22:08:47,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:08:47,058 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:08:47,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:08:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash 893030610, now seen corresponding path program 8 times [2023-12-24 22:08:47,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:08:47,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018662461] [2023-12-24 22:08:47,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:08:47,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:08:47,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:08:47,059 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:08:47,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 22:08:47,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:08:47,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:08:47,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 22:08:47,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:08:47,211 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:08:47,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:08:47,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:08:47,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:08:47,258 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-24 22:08:47,266 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 9 treesize of output 3 [2023-12-24 22:08:47,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:08:47,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:08:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:08:48,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:08:52,906 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 36 treesize of output 34 [2023-12-24 22:08:52,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:08:52,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:08:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:08:52,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:08:52,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018662461] [2023-12-24 22:08:52,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018662461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:08:52,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:08:52,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-24 22:08:52,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915230866] [2023-12-24 22:08:52,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:08:52,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-24 22:08:52,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:08:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-24 22:08:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1990, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 22:08:52,916 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 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) [2023-12-24 22:08:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:08:57,339 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2023-12-24 22:08:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 22:08:57,340 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 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) Word has length 51 [2023-12-24 22:08:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:08:57,341 INFO L225 Difference]: With dead ends: 73 [2023-12-24 22:08:57,341 INFO L226 Difference]: Without dead ends: 65 [2023-12-24 22:08:57,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=512, Invalid=5340, Unknown=0, NotChecked=0, Total=5852 [2023-12-24 22:08:57,342 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 91 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:08:57,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 94 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 22:08:57,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-24 22:08:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-24 22:08:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:08:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2023-12-24 22:08:57,354 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 51 [2023-12-24 22:08:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:08:57,354 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2023-12-24 22:08:57,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 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) [2023-12-24 22:08:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2023-12-24 22:08:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-24 22:08:57,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:08:57,355 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:08:57,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-24 22:08:57,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:08:57,557 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:08:57,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:08:57,558 INFO L85 PathProgramCache]: Analyzing trace with hash -864702766, now seen corresponding path program 9 times [2023-12-24 22:08:57,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:08:57,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134195420] [2023-12-24 22:08:57,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:08:57,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:08:57,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:08:57,574 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:08:57,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 22:08:57,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2023-12-24 22:08:57,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:08:57,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 22:08:57,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:08:57,824 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:08:57,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:08:57,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:08:57,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:08:57,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 16 [2023-12-24 22:08:57,885 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 9 treesize of output 3 [2023-12-24 22:08:58,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:08:58,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:08:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 16 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:08:59,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:03,471 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 36 treesize of output 34 [2023-12-24 22:09:03,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:09:03,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:09:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:09:03,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:03,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134195420] [2023-12-24 22:09:03,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134195420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:03,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:03,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2023-12-24 22:09:03,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404028495] [2023-12-24 22:09:03,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:03,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-24 22:09:03,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:03,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-24 22:09:03,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2082, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 22:09:03,490 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 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) [2023-12-24 22:09:07,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:07,088 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2023-12-24 22:09:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 22:09:07,089 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 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) Word has length 57 [2023-12-24 22:09:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:07,090 INFO L225 Difference]: With dead ends: 73 [2023-12-24 22:09:07,090 INFO L226 Difference]: Without dead ends: 65 [2023-12-24 22:09:07,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=432, Invalid=5268, Unknown=0, NotChecked=0, Total=5700 [2023-12-24 22:09:07,091 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 87 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:07,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 70 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 22:09:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-24 22:09:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-24 22:09:07,106 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) [2023-12-24 22:09:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2023-12-24 22:09:07,106 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 57 [2023-12-24 22:09:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:07,106 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2023-12-24 22:09:07,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 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) [2023-12-24 22:09:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2023-12-24 22:09:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-24 22:09:07,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:07,107 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:07,112 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 (15)] Ended with exit code 0 [2023-12-24 22:09:07,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:07,308 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:07,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash -966636334, now seen corresponding path program 10 times [2023-12-24 22:09:07,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:07,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825205371] [2023-12-24 22:09:07,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:09:07,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:07,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:07,311 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:09:07,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 22:09:07,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:09:07,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:09:07,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-24 22:09:07,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:07,451 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:09:07,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:09:07,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:09:07,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:09:07,506 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 9 treesize of output 3 [2023-12-24 22:09:08,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:09:08,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:09:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 18 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:09:09,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:17,019 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 36 treesize of output 34 [2023-12-24 22:09:17,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:09:17,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:09:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:09:17,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825205371] [2023-12-24 22:09:17,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825205371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:17,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:17,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 66 [2023-12-24 22:09:17,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563306954] [2023-12-24 22:09:17,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:17,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-24 22:09:17,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:17,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-24 22:09:17,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=4012, Unknown=0, NotChecked=0, Total=4290 [2023-12-24 22:09:17,033 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 66 states, 66 states have (on average 1.8636363636363635) internal successors, (123), 66 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) [2023-12-24 22:09:24,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:24,225 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2023-12-24 22:09:24,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-24 22:09:24,226 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.8636363636363635) internal successors, (123), 66 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) Word has length 63 [2023-12-24 22:09:24,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:24,232 INFO L225 Difference]: With dead ends: 80 [2023-12-24 22:09:24,232 INFO L226 Difference]: Without dead ends: 71 [2023-12-24 22:09:24,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1960 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=728, Invalid=9778, Unknown=0, NotChecked=0, Total=10506 [2023-12-24 22:09:24,237 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 110 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:24,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 134 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 22:09:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-24 22:09:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-24 22:09:24,267 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) [2023-12-24 22:09:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2023-12-24 22:09:24,268 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 63 [2023-12-24 22:09:24,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:24,268 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2023-12-24 22:09:24,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.8636363636363635) internal successors, (123), 66 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) [2023-12-24 22:09:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2023-12-24 22:09:24,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-24 22:09:24,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:24,269 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:24,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 22:09:24,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:24,472 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:24,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:24,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1210029358, now seen corresponding path program 11 times [2023-12-24 22:09:24,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:24,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810645809] [2023-12-24 22:09:24,473 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:09:24,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:24,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:24,474 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:09:24,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 22:09:24,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-12-24 22:09:24,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:09:24,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 22:09:24,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:24,651 INFO L349 Elim1Store]: treesize reduction 42, result has 31.1 percent of original size [2023-12-24 22:09:24,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 80 [2023-12-24 22:09:24,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2023-12-24 22:09:24,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2023-12-24 22:09:24,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 treesize of output 13 [2023-12-24 22:09:24,716 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 13 treesize of output 3 [2023-12-24 22:09:25,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:09:25,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 22:09:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 20 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:09:27,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:33,760 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 36 treesize of output 34 [2023-12-24 22:09:33,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:09:33,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:09:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 20 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:09:33,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:33,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810645809] [2023-12-24 22:09:33,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810645809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:33,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:33,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2023-12-24 22:09:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468033616] [2023-12-24 22:09:33,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:33,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-24 22:09:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:33,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-24 22:09:33,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3794, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 22:09:33,768 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 64 states, 64 states have (on average 2.0625) internal successors, (132), 64 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) [2023-12-24 22:09:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:41,956 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2023-12-24 22:09:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-24 22:09:41,957 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 64 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 69 [2023-12-24 22:09:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:41,957 INFO L225 Difference]: With dead ends: 87 [2023-12-24 22:09:41,958 INFO L226 Difference]: Without dead ends: 81 [2023-12-24 22:09:41,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=720, Invalid=11052, Unknown=0, NotChecked=0, Total=11772 [2023-12-24 22:09:41,959 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 120 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:41,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 140 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 22:09:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-24 22:09:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2023-12-24 22:09:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:09:41,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2023-12-24 22:09:41,983 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 69 [2023-12-24 22:09:41,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:41,983 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2023-12-24 22:09:41,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 64 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) [2023-12-24 22:09:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2023-12-24 22:09:41,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-24 22:09:41,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:41,984 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:41,987 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 (17)] Ended with exit code 0 [2023-12-24 22:09:42,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:42,187 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:42,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1267287660, now seen corresponding path program 2 times [2023-12-24 22:09:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:42,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074780203] [2023-12-24 22:09:42,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:09:42,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:42,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:42,189 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:09:42,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 22:09:42,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-24 22:09:42,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:09:42,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 22:09:42,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-24 22:09:42,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-24 22:09:42,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:42,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074780203] [2023-12-24 22:09:42,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074780203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:42,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:42,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-24 22:09:42,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84826079] [2023-12-24 22:09:42,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:42,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 22:09:42,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:42,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 22:09:42,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 22:09:42,708 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:09:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:42,824 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2023-12-24 22:09:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 22:09:42,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-24 22:09:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:42,825 INFO L225 Difference]: With dead ends: 81 [2023-12-24 22:09:42,825 INFO L226 Difference]: Without dead ends: 76 [2023-12-24 22:09:42,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-24 22:09:42,826 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:42,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:09:42,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-24 22:09:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-24 22:09:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 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) [2023-12-24 22:09:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2023-12-24 22:09:42,848 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 69 [2023-12-24 22:09:42,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:42,848 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2023-12-24 22:09:42,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:09:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2023-12-24 22:09:42,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-24 22:09:42,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:42,849 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:42,854 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 [2023-12-24 22:09:43,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:43,054 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:43,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash 231737554, now seen corresponding path program 12 times [2023-12-24 22:09:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:43,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581724725] [2023-12-24 22:09:43,055 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:09:43,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:43,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:43,057 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:09:43,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 22:09:43,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-12-24 22:09:43,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:09:43,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-24 22:09:43,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:43,422 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:09:43,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:09:43,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:09:43,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:09:43,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2023-12-24 22:09:43,479 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 9 treesize of output 3 [2023-12-24 22:09:45,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:09:45,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:09:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:09:46,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:55,978 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 36 treesize of output 34 [2023-12-24 22:09:55,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:09:55,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:09:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:09:55,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:55,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581724725] [2023-12-24 22:09:55,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581724725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:55,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:55,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39] total 76 [2023-12-24 22:09:55,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290537437] [2023-12-24 22:09:55,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:55,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-24 22:09:55,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:55,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-24 22:09:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=5373, Unknown=0, NotChecked=0, Total=5700 [2023-12-24 22:09:55,990 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 76 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 76 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) [2023-12-24 22:10:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:10:04,799 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2023-12-24 22:10:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 22:10:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 76 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) Word has length 75 [2023-12-24 22:10:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:10:04,800 INFO L225 Difference]: With dead ends: 91 [2023-12-24 22:10:04,800 INFO L226 Difference]: Without dead ends: 83 [2023-12-24 22:10:04,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=751, Invalid=12821, Unknown=0, NotChecked=0, Total=13572 [2023-12-24 22:10:04,802 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 108 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2851 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:10:04,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 120 Invalid, 2883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2851 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 22:10:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-24 22:10:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2023-12-24 22:10:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:10:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2023-12-24 22:10:04,822 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2023-12-24 22:10:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:10:04,822 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2023-12-24 22:10:04,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 76 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) [2023-12-24 22:10:04,822 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2023-12-24 22:10:04,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-24 22:10:04,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:10:04,823 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:10:04,827 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 [2023-12-24 22:10:05,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:10:05,027 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:10:05,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:10:05,027 INFO L85 PathProgramCache]: Analyzing trace with hash 219227858, now seen corresponding path program 13 times [2023-12-24 22:10:05,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:10:05,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642908226] [2023-12-24 22:10:05,027 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:10:05,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:10:05,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:10:05,028 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:10:05,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 22:10:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:10:05,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-24 22:10:05,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:10:05,202 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:10:05,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:10:05,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:10:05,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:10:05,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 9 [2023-12-24 22:10:05,256 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 9 treesize of output 3 [2023-12-24 22:10:06,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:10:06,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:10:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 24 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:10:09,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:10:21,246 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 36 treesize of output 34 [2023-12-24 22:10:21,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:10:21,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:10:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:10:21,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:10:21,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642908226] [2023-12-24 22:10:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642908226] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:10:21,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:10:21,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 46] total 90 [2023-12-24 22:10:21,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713783438] [2023-12-24 22:10:21,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:10:21,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2023-12-24 22:10:21,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:10:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2023-12-24 22:10:21,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=7610, Unknown=0, NotChecked=0, Total=8010 [2023-12-24 22:10:21,255 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 90 states, 90 states have (on average 1.7666666666666666) internal successors, (159), 90 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) [2023-12-24 22:10:35,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:10:35,853 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2023-12-24 22:10:35,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-24 22:10:35,854 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.7666666666666666) internal successors, (159), 90 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) Word has length 81 [2023-12-24 22:10:35,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:10:35,854 INFO L225 Difference]: With dead ends: 97 [2023-12-24 22:10:35,854 INFO L226 Difference]: Without dead ends: 89 [2023-12-24 22:10:35,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4048 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=1234, Invalid=18788, Unknown=0, NotChecked=0, Total=20022 [2023-12-24 22:10:35,856 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 187 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 3535 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:10:35,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 142 Invalid, 3632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3535 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-24 22:10:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-24 22:10:35,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2023-12-24 22:10:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 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) [2023-12-24 22:10:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2023-12-24 22:10:35,881 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 81 [2023-12-24 22:10:35,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:10:35,882 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2023-12-24 22:10:35,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.7666666666666666) internal successors, (159), 90 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) [2023-12-24 22:10:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2023-12-24 22:10:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 22:10:35,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:10:35,882 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:10:35,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 22:10:36,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:10:36,086 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:10:36,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:10:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash -763116334, now seen corresponding path program 14 times [2023-12-24 22:10:36,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:10:36,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729040569] [2023-12-24 22:10:36,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:10:36,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:10:36,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:10:36,089 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:10:36,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 22:10:36,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:10:36,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:10:36,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 22:10:36,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:10:36,257 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:10:36,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:10:36,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:10:36,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:10:36,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 9 [2023-12-24 22:10:36,313 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 9 treesize of output 3 [2023-12-24 22:10:37,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:10:37,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:10:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:10:39,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:10:51,453 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 36 treesize of output 34 [2023-12-24 22:10:51,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:10:51,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:10:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:10:51,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:10:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729040569] [2023-12-24 22:10:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729040569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:10:51,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:10:51,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2023-12-24 22:10:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261271051] [2023-12-24 22:10:51,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:10:51,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-24 22:10:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:10:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-24 22:10:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=5282, Unknown=0, NotChecked=0, Total=5550 [2023-12-24 22:10:51,462 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 75 states, 75 states have (on average 2.28) internal successors, (171), 75 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:11:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:11:03,132 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2023-12-24 22:11:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-24 22:11:03,133 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.28) internal successors, (171), 75 states have internal predecessors, (171), 0 states have call successors, (0), 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 87 [2023-12-24 22:11:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:11:03,133 INFO L225 Difference]: With dead ends: 103 [2023-12-24 22:11:03,133 INFO L226 Difference]: Without dead ends: 95 [2023-12-24 22:11:03,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2168 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=732, Invalid=13548, Unknown=0, NotChecked=0, Total=14280 [2023-12-24 22:11:03,134 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 122 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3781 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 3814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:11:03,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 139 Invalid, 3814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3781 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-24 22:11:03,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-24 22:11:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2023-12-24 22:11:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:11:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2023-12-24 22:11:03,173 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 87 [2023-12-24 22:11:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:11:03,173 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2023-12-24 22:11:03,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.28) internal successors, (171), 75 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:11:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2023-12-24 22:11:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-24 22:11:03,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:11:03,174 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:11:03,178 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 (21)] Ended with exit code 0 [2023-12-24 22:11:03,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:11:03,378 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:11:03,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:11:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1393025746, now seen corresponding path program 15 times [2023-12-24 22:11:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:11:03,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118641229] [2023-12-24 22:11:03,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:11:03,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:11:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:11:03,379 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:11:03,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 22:11:03,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2023-12-24 22:11:03,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:11:03,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 22:11:03,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:11:03,890 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:11:03,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:11:03,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:11:03,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:11:03,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 9 [2023-12-24 22:11:03,956 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 9 treesize of output 3 [2023-12-24 22:11:05,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:11:05,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:11:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 28 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:11:07,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:11:16,578 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 36 treesize of output 34 [2023-12-24 22:11:16,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:11:16,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:11:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:11:16,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:11:16,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118641229] [2023-12-24 22:11:16,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118641229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:11:16,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:11:16,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37] total 72 [2023-12-24 22:11:16,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986449460] [2023-12-24 22:11:16,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:11:16,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-24 22:11:16,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:11:16,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-24 22:11:16,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=4872, Unknown=0, NotChecked=0, Total=5112 [2023-12-24 22:11:16,587 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 72 states, 72 states have (on average 2.5416666666666665) internal successors, (183), 72 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:11:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:11:25,436 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2023-12-24 22:11:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-24 22:11:25,437 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.5416666666666665) internal successors, (183), 72 states have internal predecessors, (183), 0 states have call successors, (0), 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 93 [2023-12-24 22:11:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:11:25,438 INFO L225 Difference]: With dead ends: 109 [2023-12-24 22:11:25,438 INFO L226 Difference]: Without dead ends: 101 [2023-12-24 22:11:25,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=576, Invalid=11856, Unknown=0, NotChecked=0, Total=12432 [2023-12-24 22:11:25,439 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 126 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 3934 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 3956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:11:25,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 132 Invalid, 3956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3934 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-24 22:11:25,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-24 22:11:25,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2023-12-24 22:11:25,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:11:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2023-12-24 22:11:25,466 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2023-12-24 22:11:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:11:25,466 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2023-12-24 22:11:25,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.5416666666666665) internal successors, (183), 72 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:11:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2023-12-24 22:11:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-24 22:11:25,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:11:25,467 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:11:25,492 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 (22)] Ended with exit code 0 [2023-12-24 22:11:25,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:11:25,672 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:11:25,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:11:25,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1534951634, now seen corresponding path program 16 times [2023-12-24 22:11:25,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:11:25,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657848431] [2023-12-24 22:11:25,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:11:25,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:11:25,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:11:25,674 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:11:25,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 22:11:25,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:11:25,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:11:25,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-24 22:11:25,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:11:25,849 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:11:25,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:11:25,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:11:25,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:11:25,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 9 [2023-12-24 22:11:25,936 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 9 treesize of output 3 [2023-12-24 22:11:27,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:11:27,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:11:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:11:30,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:11:47,194 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 36 treesize of output 34 [2023-12-24 22:11:47,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:11:47,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:11:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:11:47,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:11:47,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657848431] [2023-12-24 22:11:47,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657848431] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:11:47,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:11:47,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2023-12-24 22:11:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905910985] [2023-12-24 22:11:47,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:11:47,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-12-24 22:11:47,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:11:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-12-24 22:11:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=7164, Unknown=0, NotChecked=0, Total=7482 [2023-12-24 22:11:47,204 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 87 states, 87 states have (on average 2.2413793103448274) internal successors, (195), 87 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:12:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:12:03,504 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2023-12-24 22:12:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-24 22:12:03,505 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.2413793103448274) internal successors, (195), 87 states have internal predecessors, (195), 0 states have call successors, (0), 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 99 [2023-12-24 22:12:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:12:03,505 INFO L225 Difference]: With dead ends: 115 [2023-12-24 22:12:03,505 INFO L226 Difference]: Without dead ends: 107 [2023-12-24 22:12:03,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=917, Invalid=18823, Unknown=0, NotChecked=0, Total=19740 [2023-12-24 22:12:03,507 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 149 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4299 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 4363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 4299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:12:03,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 139 Invalid, 4363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 4299 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 22:12:03,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-24 22:12:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2023-12-24 22:12:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:12:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2023-12-24 22:12:03,536 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 99 [2023-12-24 22:12:03,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:12:03,536 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2023-12-24 22:12:03,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.2413793103448274) internal successors, (195), 87 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:12:03,537 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2023-12-24 22:12:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 22:12:03,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:12:03,537 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:12:03,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 22:12:03,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:12:03,741 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:12:03,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:12:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1866162478, now seen corresponding path program 17 times [2023-12-24 22:12:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:12:03,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438825306] [2023-12-24 22:12:03,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:12:03,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:12:03,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:12:03,743 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:12:03,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 22:12:03,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2023-12-24 22:12:03,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:12:03,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-24 22:12:03,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:12:04,051 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:12:04,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:12:04,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:12:04,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:12:04,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 16 [2023-12-24 22:12:04,104 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 9 treesize of output 3 [2023-12-24 22:12:05,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:12:05,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:12:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 32 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:12:08,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:12:22,338 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 36 treesize of output 34 [2023-12-24 22:12:22,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:12:22,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:12:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:12:22,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:12:22,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438825306] [2023-12-24 22:12:22,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438825306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:12:22,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:12:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 92 [2023-12-24 22:12:22,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498801025] [2023-12-24 22:12:22,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:12:22,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-12-24 22:12:22,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:12:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-12-24 22:12:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=8023, Unknown=0, NotChecked=0, Total=8372 [2023-12-24 22:12:22,352 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 92 states, 92 states have (on average 2.25) internal successors, (207), 92 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:12:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:12:36,658 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2023-12-24 22:12:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-24 22:12:36,659 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.25) internal successors, (207), 92 states have internal predecessors, (207), 0 states have call successors, (0), 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 105 [2023-12-24 22:12:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:12:36,660 INFO L225 Difference]: With dead ends: 121 [2023-12-24 22:12:36,660 INFO L226 Difference]: Without dead ends: 113 [2023-12-24 22:12:36,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3572 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=1003, Invalid=21049, Unknown=0, NotChecked=0, Total=22052 [2023-12-24 22:12:36,662 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 160 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 5597 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 5651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:12:36,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 168 Invalid, 5651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5597 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-24 22:12:36,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-24 22:12:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2023-12-24 22:12:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.009009009009009) internal successors, (112), 111 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) [2023-12-24 22:12:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2023-12-24 22:12:36,705 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 105 [2023-12-24 22:12:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:12:36,705 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2023-12-24 22:12:36,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.25) internal successors, (207), 92 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:12:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2023-12-24 22:12:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 22:12:36,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:12:36,706 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:12:36,711 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 (24)] Forceful destruction successful, exit code 0 [2023-12-24 22:12:36,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:12:36,911 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:12:36,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:12:36,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1874672850, now seen corresponding path program 18 times [2023-12-24 22:12:36,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:12:36,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786594114] [2023-12-24 22:12:36,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:12:36,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:12:36,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:12:36,913 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:12:36,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 22:12:37,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2023-12-24 22:12:37,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:12:37,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-24 22:12:37,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:12:37,701 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:12:37,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:12:37,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:12:37,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:12:37,744 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-24 22:12:37,754 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 9 treesize of output 3 [2023-12-24 22:12:40,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:12:40,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:12:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 34 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:12:43,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:13:03,640 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 36 treesize of output 34 [2023-12-24 22:13:03,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:13:03,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:13:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 0 proven. 1785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:13:03,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:13:03,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786594114] [2023-12-24 22:13:03,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786594114] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:13:03,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:13:03,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 57] total 112 [2023-12-24 22:13:03,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882041583] [2023-12-24 22:13:03,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:13:03,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2023-12-24 22:13:03,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:13:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2023-12-24 22:13:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=11944, Unknown=0, NotChecked=0, Total=12432 [2023-12-24 22:13:03,650 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand has 112 states, 112 states have (on average 1.9553571428571428) internal successors, (219), 112 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:13:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:13:22,361 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2023-12-24 22:13:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-24 22:13:22,362 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.9553571428571428) internal successors, (219), 112 states have internal predecessors, (219), 0 states have call successors, (0), 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 111 [2023-12-24 22:13:22,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:13:22,363 INFO L225 Difference]: With dead ends: 127 [2023-12-24 22:13:22,363 INFO L226 Difference]: Without dead ends: 119 [2023-12-24 22:13:22,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5857 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=1157, Invalid=29293, Unknown=0, NotChecked=0, Total=30450 [2023-12-24 22:13:22,364 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 162 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 6579 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 6632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 6579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:13:22,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 177 Invalid, 6632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 6579 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-24 22:13:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-24 22:13:22,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2023-12-24 22:13:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0085470085470085) internal successors, (118), 117 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:13:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2023-12-24 22:13:22,442 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 111 [2023-12-24 22:13:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:13:22,442 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2023-12-24 22:13:22,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 1.9553571428571428) internal successors, (219), 112 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:13:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2023-12-24 22:13:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 22:13:22,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:13:22,443 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:13:22,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 22:13:22,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:13:22,648 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:13:22,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:13:22,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1296521938, now seen corresponding path program 19 times [2023-12-24 22:13:22,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:13:22,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560659765] [2023-12-24 22:13:22,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:13:22,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:13:22,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:13:22,650 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:13:22,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 22:13:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:13:22,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-24 22:13:22,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:13:22,847 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:13:22,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:13:22,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:13:22,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:13:22,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-12-24 22:13:22,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 16 [2023-12-24 22:13:25,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:13:25,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:13:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1998 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:13:28,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:13:47,676 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 36 treesize of output 34 [2023-12-24 22:13:47,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:13:47,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:13:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1998 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:13:47,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:13:47,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560659765] [2023-12-24 22:13:47,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560659765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:13:47,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:13:47,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 54] total 106 [2023-12-24 22:13:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71439813] [2023-12-24 22:13:47,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:13:47,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-12-24 22:13:47,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:13:47,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-12-24 22:13:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=10718, Unknown=0, NotChecked=0, Total=11130 [2023-12-24 22:13:47,685 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand has 106 states, 106 states have (on average 2.1792452830188678) internal successors, (231), 106 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:14:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:14:08,477 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2023-12-24 22:14:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-24 22:14:08,478 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.1792452830188678) internal successors, (231), 106 states have internal predecessors, (231), 0 states have call successors, (0), 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 117 [2023-12-24 22:14:08,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:14:08,478 INFO L225 Difference]: With dead ends: 133 [2023-12-24 22:14:08,479 INFO L226 Difference]: Without dead ends: 125 [2023-12-24 22:14:08,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4775 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=1111, Invalid=26945, Unknown=0, NotChecked=0, Total=28056 [2023-12-24 22:14:08,480 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 194 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 6789 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 6852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 6789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:14:08,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 182 Invalid, 6852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 6789 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-24 22:14:08,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-24 22:14:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2023-12-24 22:14:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.008130081300813) internal successors, (124), 123 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:14:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2023-12-24 22:14:08,561 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 117 [2023-12-24 22:14:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:14:08,562 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2023-12-24 22:14:08,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.1792452830188678) internal successors, (231), 106 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:14:08,562 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2023-12-24 22:14:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 22:14:08,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:14:08,563 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:14:08,568 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 [2023-12-24 22:14:08,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:14:08,767 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:14:08,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:14:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1447229650, now seen corresponding path program 20 times [2023-12-24 22:14:08,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:14:08,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169780387] [2023-12-24 22:14:08,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:14:08,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:14:08,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:14:08,769 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:14:08,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 22:14:08,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:14:08,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:14:08,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-24 22:14:08,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:14:08,997 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:14:08,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:14:09,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:14:09,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:14:09,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 16 [2023-12-24 22:14:11,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:14:11,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:14:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:14:14,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:14:33,396 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 36 treesize of output 34 [2023-12-24 22:14:33,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:14:33,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:14:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:14:33,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:14:33,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169780387] [2023-12-24 22:14:33,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169780387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:14:33,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:14:33,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 54] total 106 [2023-12-24 22:14:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304590956] [2023-12-24 22:14:33,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:14:33,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-12-24 22:14:33,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:14:33,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-12-24 22:14:33,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=10733, Unknown=0, NotChecked=0, Total=11130 [2023-12-24 22:14:33,406 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand has 106 states, 106 states have (on average 2.292452830188679) internal successors, (243), 106 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:14:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:14:52,298 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2023-12-24 22:14:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-24 22:14:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.292452830188679) internal successors, (243), 106 states have internal predecessors, (243), 0 states have call successors, (0), 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 123 [2023-12-24 22:14:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:14:52,300 INFO L225 Difference]: With dead ends: 139 [2023-12-24 22:14:52,300 INFO L226 Difference]: Without dead ends: 131 [2023-12-24 22:14:52,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4527 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=1072, Invalid=27320, Unknown=0, NotChecked=0, Total=28392 [2023-12-24 22:14:52,302 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 212 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 7421 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 7421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:14:52,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 185 Invalid, 7496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 7421 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-24 22:14:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-24 22:14:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2023-12-24 22:14:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0077519379844961) internal successors, (130), 129 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:14:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2023-12-24 22:14:52,388 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 123 [2023-12-24 22:14:52,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:14:52,389 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2023-12-24 22:14:52,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.292452830188679) internal successors, (243), 106 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:14:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2023-12-24 22:14:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 22:14:52,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:14:52,389 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:14:52,396 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 (27)] Forceful destruction successful, exit code 0 [2023-12-24 22:14:52,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:14:52,594 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:14:52,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:14:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1886382382, now seen corresponding path program 21 times [2023-12-24 22:14:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:14:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323857096] [2023-12-24 22:14:52,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:14:52,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:14:52,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:14:52,596 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) [2023-12-24 22:14:52,597 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 [2023-12-24 22:14:53,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2023-12-24 22:14:53,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:14:53,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-24 22:14:53,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:14:53,533 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:14:53,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:14:53,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:14:53,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:14:53,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 9 [2023-12-24 22:14:53,608 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 9 treesize of output 3 [2023-12-24 22:14:56,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:14:56,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:14:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 40 proven. 2420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:14:59,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:15:16,938 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 36 treesize of output 34 [2023-12-24 22:15:16,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:15:16,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:15:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 0 proven. 2460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:15:16,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:15:16,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323857096] [2023-12-24 22:15:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323857096] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:15:16,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:15:16,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 51] total 100 [2023-12-24 22:15:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098746621] [2023-12-24 22:15:16,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:15:16,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-12-24 22:15:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:15:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-12-24 22:15:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=9555, Unknown=0, NotChecked=0, Total=9900 [2023-12-24 22:15:16,947 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand has 100 states, 100 states have (on average 2.55) internal successors, (255), 100 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:15:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:15:33,632 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2023-12-24 22:15:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-24 22:15:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.55) internal successors, (255), 100 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-24 22:15:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:15:33,633 INFO L225 Difference]: With dead ends: 145 [2023-12-24 22:15:33,633 INFO L226 Difference]: Without dead ends: 137 [2023-12-24 22:15:33,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3395 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=862, Invalid=23944, Unknown=0, NotChecked=0, Total=24806 [2023-12-24 22:15:33,635 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 156 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 7784 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 7784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:15:33,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 187 Invalid, 7808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 7784 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-24 22:15:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-24 22:15:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2023-12-24 22:15:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0074074074074073) internal successors, (136), 135 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) [2023-12-24 22:15:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2023-12-24 22:15:33,693 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 129 [2023-12-24 22:15:33,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:15:33,693 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2023-12-24 22:15:33,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.55) internal successors, (255), 100 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:15:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2023-12-24 22:15:33,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 22:15:33,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:15:33,694 INFO L195 NwaCegarLoop]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:15:33,700 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 (28)] Forceful destruction successful, exit code 0 [2023-12-24 22:15:33,899 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 [2023-12-24 22:15:33,900 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:15:33,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:15:33,900 INFO L85 PathProgramCache]: Analyzing trace with hash -703679278, now seen corresponding path program 22 times [2023-12-24 22:15:33,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:15:33,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036234449] [2023-12-24 22:15:33,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:15:33,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:15:33,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:15:33,902 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) [2023-12-24 22:15:33,903 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 [2023-12-24 22:15:34,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:15:34,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:15:34,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-24 22:15:34,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:15:34,130 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:15:34,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:15:34,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:15:34,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:15:34,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 9 [2023-12-24 22:15:34,178 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 9 treesize of output 3 [2023-12-24 22:15:36,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:15:36,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:15:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 0 proven. 2709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:15:39,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:00,643 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 36 treesize of output 34 [2023-12-24 22:16:00,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:16:00,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:16:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 0 proven. 2709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:16:00,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036234449] [2023-12-24 22:16:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036234449] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:00,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:00,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 54] total 106 [2023-12-24 22:16:00,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842636435] [2023-12-24 22:16:00,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:00,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-12-24 22:16:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-12-24 22:16:00,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=10763, Unknown=0, NotChecked=0, Total=11130 [2023-12-24 22:16:00,653 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand has 106 states, 106 states have (on average 2.518867924528302) internal successors, (267), 106 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:19,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:16:19,207 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2023-12-24 22:16:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-24 22:16:19,208 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.518867924528302) internal successors, (267), 106 states have internal predecessors, (267), 0 states have call successors, (0), 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 135 [2023-12-24 22:16:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:16:19,208 INFO L225 Difference]: With dead ends: 151 [2023-12-24 22:16:19,208 INFO L226 Difference]: Without dead ends: 143 [2023-12-24 22:16:19,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3797 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=936, Invalid=26454, Unknown=0, NotChecked=0, Total=27390 [2023-12-24 22:16:19,210 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 197 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 8226 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 8270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 8226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:16:19,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 188 Invalid, 8270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 8226 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-24 22:16:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-24 22:16:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2023-12-24 22:16:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0070921985815602) internal successors, (142), 141 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2023-12-24 22:16:19,259 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 135 [2023-12-24 22:16:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:16:19,259 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2023-12-24 22:16:19,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.518867924528302) internal successors, (267), 106 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:16:19,259 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2023-12-24 22:16:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 22:16:19,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:16:19,260 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:16:19,265 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 [2023-12-24 22:16:19,465 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 [2023-12-24 22:16:19,465 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:16:19,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:16:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash -560016686, now seen corresponding path program 23 times [2023-12-24 22:16:19,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:16:19,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128891089] [2023-12-24 22:16:19,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:16:19,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:16:19,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:16:19,467 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) [2023-12-24 22:16:19,468 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 [2023-12-24 22:16:19,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2023-12-24 22:16:19,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:16:19,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-24 22:16:19,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:16:19,951 INFO L349 Elim1Store]: treesize reduction 42, result has 31.1 percent of original size [2023-12-24 22:16:19,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 80 [2023-12-24 22:16:19,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2023-12-24 22:16:20,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:16:20,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-24 22:16:20,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 20 [2023-12-24 22:16:22,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:16:22,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 22:16:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 44 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:16:27,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:16:50,477 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 36 treesize of output 34 [2023-12-24 22:16:50,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:16:50,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:16:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 44 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:16:50,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:16:50,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128891089] [2023-12-24 22:16:50,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128891089] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:16:50,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:16:50,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2023-12-24 22:16:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696301603] [2023-12-24 22:16:50,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:16:50,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2023-12-24 22:16:50,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:16:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2023-12-24 22:16:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=16769, Unknown=0, NotChecked=0, Total=17292 [2023-12-24 22:16:50,486 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand has 132 states, 132 states have (on average 2.090909090909091) internal successors, (276), 132 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) [2023-12-24 22:17:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:17:26,495 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2023-12-24 22:17:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-24 22:17:26,496 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.090909090909091) internal successors, (276), 132 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 141 [2023-12-24 22:17:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:17:26,496 INFO L225 Difference]: With dead ends: 155 [2023-12-24 22:17:26,496 INFO L226 Difference]: Without dead ends: 149 [2023-12-24 22:17:26,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9760 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=1928, Invalid=49828, Unknown=0, NotChecked=0, Total=51756 [2023-12-24 22:17:26,498 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 276 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 10585 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 10723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 10585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:17:26,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 234 Invalid, 10723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 10585 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-24 22:17:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-24 22:17:26,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2023-12-24 22:17:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0068027210884354) internal successors, (148), 147 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) [2023-12-24 22:17:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2023-12-24 22:17:26,555 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 141 [2023-12-24 22:17:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:17:26,555 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2023-12-24 22:17:26,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.090909090909091) internal successors, (276), 132 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) [2023-12-24 22:17:26,556 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2023-12-24 22:17:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 22:17:26,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:17:26,556 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:17:26,563 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 [2023-12-24 22:17:26,758 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 [2023-12-24 22:17:26,766 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:17:26,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:17:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash 908095698, now seen corresponding path program 24 times [2023-12-24 22:17:26,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:17:26,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439412903] [2023-12-24 22:17:26,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:17:26,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:17:26,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:17:26,768 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) [2023-12-24 22:17:26,770 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 [2023-12-24 22:17:27,911 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2023-12-24 22:17:27,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:17:27,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-24 22:17:27,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:17:27,981 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:17:27,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:17:27,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:17:27,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:17:28,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 16 [2023-12-24 22:17:31,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:17:31,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:17:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:17:35,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:18:04,033 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 36 treesize of output 34 [2023-12-24 22:18:04,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:18:04,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:18:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:18:04,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:18:04,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439412903] [2023-12-24 22:18:04,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439412903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:18:04,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:18:04,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 71] total 140 [2023-12-24 22:18:04,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824321369] [2023-12-24 22:18:04,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:18:04,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2023-12-24 22:18:04,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:18:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2023-12-24 22:18:04,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=18865, Unknown=0, NotChecked=0, Total=19460 [2023-12-24 22:18:04,042 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand has 140 states, 140 states have (on average 2.0785714285714287) internal successors, (291), 140 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:18:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:18:31,567 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2023-12-24 22:18:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-24 22:18:31,567 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.0785714285714287) internal successors, (291), 140 states have internal predecessors, (291), 0 states have call successors, (0), 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 147 [2023-12-24 22:18:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:18:31,568 INFO L225 Difference]: With dead ends: 163 [2023-12-24 22:18:31,568 INFO L226 Difference]: Without dead ends: 155 [2023-12-24 22:18:31,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8328 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=1311, Invalid=43845, Unknown=0, NotChecked=0, Total=45156 [2023-12-24 22:18:31,570 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 181 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 10428 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 10463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 10428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:18:31,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 216 Invalid, 10463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 10428 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-24 22:18:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-24 22:18:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2023-12-24 22:18:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.0065359477124183) internal successors, (154), 153 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:18:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2023-12-24 22:18:31,650 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 147 [2023-12-24 22:18:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:18:31,650 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2023-12-24 22:18:31,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.0785714285714287) internal successors, (291), 140 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:18:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2023-12-24 22:18:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 22:18:31,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:18:31,650 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:18:31,658 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 (31)] Forceful destruction successful, exit code 0 [2023-12-24 22:18:31,856 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 [2023-12-24 22:18:31,856 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:18:31,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:18:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1098092242, now seen corresponding path program 25 times [2023-12-24 22:18:31,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:18:31,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100319206] [2023-12-24 22:18:31,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:18:31,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:18:31,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:18:31,858 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) [2023-12-24 22:18:31,883 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 [2023-12-24 22:18:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:18:32,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-24 22:18:32,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:18:32,070 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:18:32,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:18:32,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:18:32,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:18:32,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 9 [2023-12-24 22:18:32,151 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 9 treesize of output 3 [2023-12-24 22:18:34,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:18:34,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:18:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:18:39,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:19:23,278 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 36 treesize of output 34 [2023-12-24 22:19:23,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:19:23,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:19:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:19:23,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:19:23,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100319206] [2023-12-24 22:19:23,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100319206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:19:23,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:19:23,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2023-12-24 22:19:23,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017050968] [2023-12-24 22:19:23,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:19:23,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2023-12-24 22:19:23,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:19:23,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2023-12-24 22:19:23,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=15553, Unknown=0, NotChecked=0, Total=16002 [2023-12-24 22:19:23,287 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand has 127 states, 127 states have (on average 2.3858267716535435) internal successors, (303), 127 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:20:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:20:03,235 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2023-12-24 22:20:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-24 22:20:03,236 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.3858267716535435) internal successors, (303), 127 states have internal predecessors, (303), 0 states have call successors, (0), 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 153 [2023-12-24 22:20:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:20:03,237 INFO L225 Difference]: With dead ends: 169 [2023-12-24 22:20:03,237 INFO L226 Difference]: Without dead ends: 161 [2023-12-24 22:20:03,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6861 ImplicationChecksByTransitivity, 62.9s TimeCoverageRelationStatistics Valid=1416, Invalid=42474, Unknown=0, NotChecked=0, Total=43890 [2023-12-24 22:20:03,239 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 228 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 11206 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 11293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 11206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:20:03,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 227 Invalid, 11293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 11206 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2023-12-24 22:20:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-24 22:20:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2023-12-24 22:20:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0062893081761006) internal successors, (160), 159 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) [2023-12-24 22:20:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2023-12-24 22:20:03,303 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 153 [2023-12-24 22:20:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:20:03,304 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2023-12-24 22:20:03,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.3858267716535435) internal successors, (303), 127 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:20:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2023-12-24 22:20:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 22:20:03,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:20:03,304 INFO L195 NwaCegarLoop]: trace histogram [51, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:20:03,310 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 [2023-12-24 22:20:03,510 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 [2023-12-24 22:20:03,510 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:20:03,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:20:03,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1031285970, now seen corresponding path program 26 times [2023-12-24 22:20:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:20:03,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315888620] [2023-12-24 22:20:03,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:20:03,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:20:03,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:20:03,512 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) [2023-12-24 22:20:03,513 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 [2023-12-24 22:20:03,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:20:03,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:20:03,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-24 22:20:03,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:20:03,753 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:20:03,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:20:03,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:20:03,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:20:03,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 9 [2023-12-24 22:20:03,806 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 9 treesize of output 3 [2023-12-24 22:20:06,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:20:06,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:20:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3825 backedges. 0 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:20:11,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:20:40,514 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 36 treesize of output 34 [2023-12-24 22:20:40,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:20:40,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:20:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3825 backedges. 0 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:20:40,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:20:40,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315888620] [2023-12-24 22:20:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315888620] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:20:40,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:20:40,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2023-12-24 22:20:40,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198290031] [2023-12-24 22:20:40,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:20:40,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2023-12-24 22:20:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:20:40,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2023-12-24 22:20:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=14595, Unknown=0, NotChecked=0, Total=15006 [2023-12-24 22:20:40,524 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand has 123 states, 123 states have (on average 2.5609756097560976) internal successors, (315), 123 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:21:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:21:09,947 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2023-12-24 22:21:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-24 22:21:09,948 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.5609756097560976) internal successors, (315), 123 states have internal predecessors, (315), 0 states have call successors, (0), 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 159 [2023-12-24 22:21:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:21:09,948 INFO L225 Difference]: With dead ends: 175 [2023-12-24 22:21:09,948 INFO L226 Difference]: Without dead ends: 167 [2023-12-24 22:21:09,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5081 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=1051, Invalid=36005, Unknown=0, NotChecked=0, Total=37056 [2023-12-24 22:21:09,950 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 195 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 11079 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 11120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:21:09,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 217 Invalid, 11120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11079 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-24 22:21:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-24 22:21:10,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2023-12-24 22:21:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.006060606060606) internal successors, (166), 165 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:21:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2023-12-24 22:21:10,030 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 159 [2023-12-24 22:21:10,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:21:10,030 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2023-12-24 22:21:10,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.5609756097560976) internal successors, (315), 123 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:21:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2023-12-24 22:21:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 22:21:10,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:21:10,031 INFO L195 NwaCegarLoop]: trace histogram [53, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:21:10,038 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 (33)] Ended with exit code 0 [2023-12-24 22:21:10,237 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 [2023-12-24 22:21:10,238 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:21:10,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:21:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1057901266, now seen corresponding path program 27 times [2023-12-24 22:21:10,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:21:10,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230633596] [2023-12-24 22:21:10,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:21:10,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:21:10,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:21:10,239 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) [2023-12-24 22:21:10,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 22:21:11,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2023-12-24 22:21:11,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:21:11,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-24 22:21:11,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:21:11,686 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:21:11,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:21:11,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:21:11,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:21:11,739 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 9 treesize of output 3 [2023-12-24 22:21:14,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:21:14,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-12-24 22:21:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 0 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:21:18,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:21:41,591 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 36 treesize of output 34 [2023-12-24 22:21:41,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:21:41,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 22:21:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 0 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:21:41,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:21:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230633596] [2023-12-24 22:21:41,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230633596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:21:41,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:21:41,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 61] total 120 [2023-12-24 22:21:41,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197070590] [2023-12-24 22:21:41,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:21:41,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2023-12-24 22:21:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:21:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2023-12-24 22:21:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=13896, Unknown=0, NotChecked=0, Total=14280 [2023-12-24 22:21:41,601 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 120 states, 120 states have (on average 2.725) internal successors, (327), 120 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:22:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:22:03,162 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2023-12-24 22:22:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-24 22:22:03,163 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.725) internal successors, (327), 120 states have internal predecessors, (327), 0 states have call successors, (0), 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 165 [2023-12-24 22:22:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:22:03,163 INFO L225 Difference]: With dead ends: 181 [2023-12-24 22:22:03,164 INFO L226 Difference]: Without dead ends: 173 [2023-12-24 22:22:03,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4115 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=876, Invalid=32796, Unknown=0, NotChecked=0, Total=33672 [2023-12-24 22:22:03,165 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 194 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 11602 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 11624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:22:03,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 216 Invalid, 11624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 11602 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-24 22:22:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-24 22:22:03,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2023-12-24 22:22:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.0058479532163742) internal successors, (172), 171 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) [2023-12-24 22:22:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2023-12-24 22:22:03,245 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 165 [2023-12-24 22:22:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:22:03,245 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2023-12-24 22:22:03,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.725) internal successors, (327), 120 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:22:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2023-12-24 22:22:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-24 22:22:03,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:22:03,246 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:22:03,252 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 [2023-12-24 22:22:03,455 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 [2023-12-24 22:22:03,455 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:22:03,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:22:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash 857073874, now seen corresponding path program 28 times [2023-12-24 22:22:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:22:03,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843437969] [2023-12-24 22:22:03,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:22:03,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:22:03,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:22:03,457 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) [2023-12-24 22:22:03,458 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 [2023-12-24 22:22:03,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:22:03,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:22:03,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 87 conjunts are in the unsatisfiable core [2023-12-24 22:22:03,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:22:03,707 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-12-24 22:22:03,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-12-24 22:22:03,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:22:03,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-24 22:22:03,749 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-24 22:22:03,760 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 9 treesize of output 3 [2023-12-24 22:22:06,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 22:22:06,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 Received shutdown request... [2023-12-24 22:22:09,870 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 (35)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:22:09,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 22:22:09,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 22:22:09,907 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:22:10,080 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 [2023-12-24 22:22:10,080 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 172 with TraceHistMax 55,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ATOM-1 context. [2023-12-24 22:22:10,084 INFO L445 BasicCegarLoop]: Path program histogram: [28, 2, 1, 1, 1, 1] [2023-12-24 22:22:10,086 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 22:22:10,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:22:10 BoogieIcfgContainer [2023-12-24 22:22:10,087 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 22:22:10,087 INFO L158 Benchmark]: Toolchain (without parser) took 875274.99ms. Allocated memory was 311.4MB in the beginning and 374.3MB in the end (delta: 62.9MB). Free memory was 269.4MB in the beginning and 154.0MB in the end (delta: 115.4MB). Peak memory consumption was 180.1MB. Max. memory is 8.0GB. [2023-12-24 22:22:10,087 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 218.1MB. Free memory is still 165.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 22:22:10,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.61ms. Allocated memory is still 311.4MB. Free memory was 268.9MB in the beginning and 257.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 22:22:10,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.31ms. Allocated memory is still 311.4MB. Free memory was 257.9MB in the beginning and 255.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 22:22:10,089 INFO L158 Benchmark]: Boogie Preprocessor took 37.25ms. Allocated memory is still 311.4MB. Free memory was 255.8MB in the beginning and 254.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 22:22:10,089 INFO L158 Benchmark]: RCFGBuilder took 384.17ms. Allocated memory is still 311.4MB. Free memory was 254.2MB in the beginning and 239.0MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 22:22:10,089 INFO L158 Benchmark]: TraceAbstraction took 874626.38ms. Allocated memory was 311.4MB in the beginning and 374.3MB in the end (delta: 62.9MB). Free memory was 238.0MB in the beginning and 154.0MB in the end (delta: 83.9MB). Peak memory consumption was 148.6MB. Max. memory is 8.0GB. [2023-12-24 22:22:10,090 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 218.1MB. Free memory is still 165.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.61ms. Allocated memory is still 311.4MB. Free memory was 268.9MB in the beginning and 257.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.31ms. Allocated memory is still 311.4MB. Free memory was 257.9MB in the beginning and 255.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.25ms. Allocated memory is still 311.4MB. Free memory was 255.8MB in the beginning and 254.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 384.17ms. Allocated memory is still 311.4MB. Free memory was 254.2MB in the beginning and 239.0MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 874626.38ms. Allocated memory was 311.4MB in the beginning and 374.3MB in the end (delta: 62.9MB). Free memory was 238.0MB in the beginning and 154.0MB in the end (delta: 83.9MB). Peak memory consumption was 148.6MB. 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 analyzing trace of length 172 with TraceHistMax 55,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 874.6s, OverallIterations: 34, TraceHistogramMax: 55, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 389.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4008 SdHoareTripleChecker+Valid, 129.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4008 mSDsluCounter, 3768 SdHoareTripleChecker+Invalid, 115.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3611 mSDsCounter, 1211 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126319 IncrementalHoareTripleChecker+Invalid, 127530 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1211 mSolverCounterUnsat, 157 mSDtfsCounter, 126319 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6189 GetRequests, 2794 SyntacticMatches, 0 SemanticMatches, 3395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86047 ImplicationChecksByTransitivity, 608.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=33, InterpolantAutomatonStates: 1404, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 33 MinimizatonAttempts, 49 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 462.3s InterpolantComputationTime, 2491 NumberOfCodeBlocks, 2431 NumberOfCodeBlocksAsserted, 394 NumberOfCheckSat, 4883 ConstructedInterpolants, 2310 QuantifiedInterpolants, 137824 SizeOfPredicates, 450 NumberOfNonLiveVariables, 5889 ConjunctsInSsa, 1580 ConjunctsInUnsatCore, 62 InterpolantComputations, 4 PerfectInterpolantSequences, 1523/78003 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