/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_m3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 18:54:21,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 18:54:21,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 18:54:21,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 18:54:21,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 18:54:21,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 18:54:21,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 18:54:21,280 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 18:54:21,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 18:54:21,284 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 18:54:21,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 18:54:21,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 18:54:21,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 18:54:21,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 18:54:21,286 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 18:54:21,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 18:54:21,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 18:54:21,287 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 18:54:21,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 18:54:21,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 18:54:21,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 18:54:21,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 18:54:21,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 18:54:21,288 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 18:54:21,288 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 18:54:21,288 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 18:54:21,288 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 18:54:21,288 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 18:54:21,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 18:54:21,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 18:54:21,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 18:54:21,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 18:54:21,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 18:54:21,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 18:54:21,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:54:21,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 18:54:21,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 18:54:21,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 18:54:21,290 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 18:54:21,290 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 18:54:21,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 18:54:21,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 18:54:21,291 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 18:54:21,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 18:54:21,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 18:54:21,291 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 18:54:21,291 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 18:54:21,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 18:54:21,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 18:54:21,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 18:54:21,513 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 18:54:21,513 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 18:54:21,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_m3.c [2023-12-21 18:54:22,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 18:54:22,707 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 18:54:22,707 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_m3.c [2023-12-21 18:54:22,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f1302928/293d5766794c46efbdafd037e6c9613a/FLAGdbc7a8a7f [2023-12-21 18:54:22,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f1302928/293d5766794c46efbdafd037e6c9613a [2023-12-21 18:54:22,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 18:54:22,731 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 18:54:22,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 18:54:22,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 18:54:22,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 18:54:22,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277df50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22, skipping insertion in model container [2023-12-21 18:54:22,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,753 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 18:54:22,843 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_m3.c[402,415] [2023-12-21 18:54:22,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:54:22,868 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 18:54:22,876 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_m3.c[402,415] [2023-12-21 18:54:22,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:54:22,891 INFO L206 MainTranslator]: Completed translation [2023-12-21 18:54:22,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22 WrapperNode [2023-12-21 18:54:22,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 18:54:22,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 18:54:22,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 18:54:22,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 18:54:22,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,913 INFO L138 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2023-12-21 18:54:22,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 18:54:22,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 18:54:22,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 18:54:22,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 18:54:22,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,935 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-21 18:54:22,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,944 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 18:54:22,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 18:54:22,946 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 18:54:22,946 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 18:54:22,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (1/1) ... [2023-12-21 18:54:22,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:54:22,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 18:54:22,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 18:54:22,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 18:54:23,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 18:54:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 18:54:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 18:54:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 18:54:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-21 18:54:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-21 18:54:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 18:54:23,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 18:54:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-21 18:54:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-21 18:54:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 18:54:23,076 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 18:54:23,077 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 18:54:23,285 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 18:54:23,314 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 18:54:23,314 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-21 18:54:23,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:54:23 BoogieIcfgContainer [2023-12-21 18:54:23,314 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 18:54:23,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 18:54:23,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 18:54:23,318 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 18:54:23,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:54:22" (1/3) ... [2023-12-21 18:54:23,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744a9958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:54:23, skipping insertion in model container [2023-12-21 18:54:23,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:54:22" (2/3) ... [2023-12-21 18:54:23,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744a9958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:54:23, skipping insertion in model container [2023-12-21 18:54:23,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:54:23" (3/3) ... [2023-12-21 18:54:23,320 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_m3.c [2023-12-21 18:54:23,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 18:54:23,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 18:54:23,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 18:54:23,365 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;@36a4b57b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 18:54:23,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 18:54:23,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:23,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 18:54:23,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:23,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:23,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:23,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash -978184044, now seen corresponding path program 1 times [2023-12-21 18:54:23,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:23,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409142750] [2023-12-21 18:54:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:54:23,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:23,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:23,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:23,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 18:54:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:54:23,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 18:54:23,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:54:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:54:23,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:54:23,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:54:23,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409142750] [2023-12-21 18:54:23,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409142750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:54:23,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:54:23,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:54:23,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695215127] [2023-12-21 18:54:23,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:54:23,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 18:54:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:54:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 18:54:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:54:23,500 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:54:23,531 INFO L93 Difference]: Finished difference Result 41 states and 68 transitions. [2023-12-21 18:54:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 18:54:23,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 18:54:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:54:23,538 INFO L225 Difference]: With dead ends: 41 [2023-12-21 18:54:23,538 INFO L226 Difference]: Without dead ends: 19 [2023-12-21 18:54:23,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:54:23,542 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:54:23,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:54:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-21 18:54:23,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-21 18:54:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-12-21 18:54:23,561 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 18 [2023-12-21 18:54:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:54:23,561 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-12-21 18:54:23,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-12-21 18:54:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 18:54:23,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:23,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:23,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 18:54:23,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:23,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:23,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:23,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2084842272, now seen corresponding path program 1 times [2023-12-21 18:54:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:23,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382706329] [2023-12-21 18:54:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:54:23,767 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 [2023-12-21 18:54:23,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:23,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:23,770 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 (3)] Waiting until timeout for monitored process [2023-12-21 18:54:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:54:23,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 18:54:23,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:54:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:54:23,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:54:23,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:54:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382706329] [2023-12-21 18:54:23,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382706329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:54:23,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:54:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 18:54:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398017498] [2023-12-21 18:54:23,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:54:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 18:54:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:54:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 18:54:23,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:54:23,857 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:54:23,902 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2023-12-21 18:54:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 18:54:23,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 18:54:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:54:23,903 INFO L225 Difference]: With dead ends: 34 [2023-12-21 18:54:23,903 INFO L226 Difference]: Without dead ends: 30 [2023-12-21 18:54:23,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 18:54:23,904 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:54:23,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 44 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:54:23,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-21 18:54:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-21 18:54:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2023-12-21 18:54:23,909 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 18 [2023-12-21 18:54:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:54:23,909 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2023-12-21 18:54:23,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-12-21 18:54:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 18:54:23,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:23,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:23,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 18:54:24,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:24,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:24,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2062272203, now seen corresponding path program 1 times [2023-12-21 18:54:24,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:24,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491154869] [2023-12-21 18:54:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:54:24,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:24,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:24,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:24,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 18:54:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:54:24,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:54:24,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:54:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 18:54:24,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:54:24,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:54:24,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491154869] [2023-12-21 18:54:24,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491154869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:54:24,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:54:24,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 18:54:24,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10439950] [2023-12-21 18:54:24,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:54:24,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 18:54:24,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:54:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 18:54:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:54:24,200 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:24,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:54:24,251 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2023-12-21 18:54:24,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 18:54:24,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-21 18:54:24,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:54:24,253 INFO L225 Difference]: With dead ends: 58 [2023-12-21 18:54:24,253 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 18:54:24,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:54:24,255 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:54:24,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:54:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 18:54:24,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-21 18:54:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 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) [2023-12-21 18:54:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2023-12-21 18:54:24,260 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 19 [2023-12-21 18:54:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:54:24,260 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2023-12-21 18:54:24,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2023-12-21 18:54:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 18:54:24,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:24,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:24,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 18:54:24,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:24,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:24,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:24,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1827835709, now seen corresponding path program 1 times [2023-12-21 18:54:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385093680] [2023-12-21 18:54:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:54:24,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:24,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:24,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:24,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 18:54:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:54:24,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 18:54:24,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:54:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 18:54:24,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:54:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 18:54:24,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:54:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385093680] [2023-12-21 18:54:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385093680] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:54:24,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:54:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 18:54:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136178149] [2023-12-21 18:54:24,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:54:24,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 18:54:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:54:24,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 18:54:24,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:54:24,567 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:54:24,637 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2023-12-21 18:54:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 18:54:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 18:54:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:54:24,638 INFO L225 Difference]: With dead ends: 59 [2023-12-21 18:54:24,638 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 18:54:24,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:54:24,639 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:54:24,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:54:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 18:54:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-21 18:54:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-12-21 18:54:24,643 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 20 [2023-12-21 18:54:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:54:24,643 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-12-21 18:54:24,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:24,643 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-12-21 18:54:24,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 18:54:24,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:24,644 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:24,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 18:54:24,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:24,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:24,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:24,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1144728309, now seen corresponding path program 2 times [2023-12-21 18:54:24,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:24,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108175658] [2023-12-21 18:54:24,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:54:24,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:24,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:24,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:24,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 18:54:24,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 18:54:24,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:54:24,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:54:24,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:54:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:54:24,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:54:24,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:54:24,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108175658] [2023-12-21 18:54:24,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108175658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:54:24,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:54:24,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 18:54:24,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291546050] [2023-12-21 18:54:24,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:54:24,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 18:54:24,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:54:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 18:54:24,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:54:24,934 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:54:25,000 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2023-12-21 18:54:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 18:54:25,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-21 18:54:25,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:54:25,003 INFO L225 Difference]: With dead ends: 50 [2023-12-21 18:54:25,003 INFO L226 Difference]: Without dead ends: 27 [2023-12-21 18:54:25,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:54:25,005 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:54:25,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 13 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:54:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-21 18:54:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-21 18:54:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-12-21 18:54:25,012 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 21 [2023-12-21 18:54:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:54:25,012 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-12-21 18:54:25,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-12-21 18:54:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 18:54:25,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:25,013 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:25,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 18:54:25,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:25,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:25,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:25,217 INFO L85 PathProgramCache]: Analyzing trace with hash -927551976, now seen corresponding path program 1 times [2023-12-21 18:54:25,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:25,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506280771] [2023-12-21 18:54:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:54:25,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:25,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:25,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:25,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 18:54:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:54:25,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 18:54:25,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:54:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 18:54:25,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:54:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 18:54:25,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:54:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506280771] [2023-12-21 18:54:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506280771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:54:25,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:54:25,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-21 18:54:25,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133410272] [2023-12-21 18:54:25,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:54:25,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 18:54:25,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:54:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 18:54:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-21 18:54:25,563 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:54:25,842 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2023-12-21 18:54:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:54:25,843 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 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 26 [2023-12-21 18:54:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:54:25,843 INFO L225 Difference]: With dead ends: 81 [2023-12-21 18:54:25,843 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 18:54:25,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-21 18:54:25,844 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 67 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:54:25,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 55 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 18:54:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 18:54:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 33. [2023-12-21 18:54:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 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) [2023-12-21 18:54:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-12-21 18:54:25,849 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 26 [2023-12-21 18:54:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:54:25,850 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-12-21 18:54:25,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-12-21 18:54:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 18:54:25,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:25,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:25,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 18:54:26,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:26,051 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:26,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:26,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1100979040, now seen corresponding path program 2 times [2023-12-21 18:54:26,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:26,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474274620] [2023-12-21 18:54:26,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:54:26,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:26,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:26,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:26,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 18:54:36,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:54:36,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:54:36,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 18:54:36,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:54:37,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:54:37,724 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 41 treesize of output 21 [2023-12-21 18:54:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 18:54:37,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:54:44,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 18:54:44,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 63 [2023-12-21 18:54:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 18:54:44,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:54:44,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474274620] [2023-12-21 18:54:44,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474274620] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:54:44,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:54:44,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 31 [2023-12-21 18:54:44,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436127139] [2023-12-21 18:54:44,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:54:44,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 18:54:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:54:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 18:54:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=852, Unknown=1, NotChecked=0, Total=930 [2023-12-21 18:54:44,757 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:54:47,186 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2023-12-21 18:54:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 18:54:47,186 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 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 32 [2023-12-21 18:54:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:54:47,186 INFO L225 Difference]: With dead ends: 58 [2023-12-21 18:54:47,187 INFO L226 Difference]: Without dead ends: 54 [2023-12-21 18:54:47,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=87, Invalid=968, Unknown=1, NotChecked=0, Total=1056 [2023-12-21 18:54:47,188 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 18:54:47,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 166 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 18:54:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-21 18:54:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2023-12-21 18:54:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 51 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2023-12-21 18:54:47,199 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 32 [2023-12-21 18:54:47,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:54:47,199 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2023-12-21 18:54:47,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:47,199 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2023-12-21 18:54:47,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 18:54:47,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:47,200 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:47,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 18:54:47,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:47,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:47,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash -891767627, now seen corresponding path program 3 times [2023-12-21 18:54:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:47,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092432117] [2023-12-21 18:54:47,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:54:47,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:47,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:47,403 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:47,405 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 (9)] Waiting until timeout for monitored process [2023-12-21 18:54:47,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 18:54:47,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:54:47,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 18:54:47,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:54:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 18:54:47,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:54:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 18:54:47,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:54:47,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092432117] [2023-12-21 18:54:47,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092432117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:54:47,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:54:47,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-21 18:54:47,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415154240] [2023-12-21 18:54:47,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:54:47,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 18:54:47,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:54:47,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 18:54:47,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:54:47,848 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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) [2023-12-21 18:54:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:54:48,165 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2023-12-21 18:54:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 18:54:48,165 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 33 [2023-12-21 18:54:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:54:48,168 INFO L225 Difference]: With dead ends: 102 [2023-12-21 18:54:48,168 INFO L226 Difference]: Without dead ends: 53 [2023-12-21 18:54:48,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-12-21 18:54:48,170 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 18:54:48,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 71 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 18:54:48,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-21 18:54:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-21 18:54:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:48,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2023-12-21 18:54:48,189 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 33 [2023-12-21 18:54:48,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:54:48,190 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2023-12-21 18:54:48,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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) [2023-12-21 18:54:48,190 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2023-12-21 18:54:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 18:54:48,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:48,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:48,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 18:54:48,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:48,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:48,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1822071747, now seen corresponding path program 4 times [2023-12-21 18:54:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:48,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740820227] [2023-12-21 18:54:48,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:54:48,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:48,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:48,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:48,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 18:54:48,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:54:48,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:54:48,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 18:54:48,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:54:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 18:54:48,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:54:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 18:54:48,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:54:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740820227] [2023-12-21 18:54:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740820227] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:54:48,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:54:48,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-21 18:54:48,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210544078] [2023-12-21 18:54:48,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:54:48,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 18:54:48,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:54:48,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 18:54:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 18:54:48,776 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:49,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:54:49,334 INFO L93 Difference]: Finished difference Result 114 states and 146 transitions. [2023-12-21 18:54:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 18:54:49,335 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 18:54:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:54:49,335 INFO L225 Difference]: With dead ends: 114 [2023-12-21 18:54:49,335 INFO L226 Difference]: Without dead ends: 75 [2023-12-21 18:54:49,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2023-12-21 18:54:49,336 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 292 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:54:49,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 66 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 18:54:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-21 18:54:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 40. [2023-12-21 18:54:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-12-21 18:54:49,341 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 34 [2023-12-21 18:54:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:54:49,341 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-12-21 18:54:49,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:54:49,342 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-12-21 18:54:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 18:54:49,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:54:49,342 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:54:49,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 18:54:49,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:49,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:54:49,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:54:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1120646518, now seen corresponding path program 5 times [2023-12-21 18:54:49,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:54:49,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959125064] [2023-12-21 18:54:49,564 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:54:49,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:54:49,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:54:49,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:54:49,567 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 Received shutdown request... [2023-12-21 19:09:11,906 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 19:09:11,921 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 19:09:12,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-21 19:09:13,107 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Forcibly destroying the process [2023-12-21 19:09:13,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-21 19:09:13,192 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 19:09:13,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:13,192 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 40 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1959125064] and IpTcStrategyModuleCvc4 [764945613]. [2023-12-21 19:09:13,195 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1] [2023-12-21 19:09:13,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 137 [2023-12-21 19:09:13,211 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 19:09:13,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 07:09:13 BoogieIcfgContainer [2023-12-21 19:09:13,212 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 19:09:13,213 INFO L158 Benchmark]: Toolchain (without parser) took 890481.76ms. Allocated memory is still 295.7MB. Free memory was 250.4MB in the beginning and 175.4MB in the end (delta: 75.0MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2023-12-21 19:09:13,213 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 158.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 19:09:13,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.75ms. Allocated memory is still 295.7MB. Free memory was 250.1MB in the beginning and 238.4MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 19:09:13,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.21ms. Allocated memory is still 295.7MB. Free memory was 238.4MB in the beginning and 236.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:09:13,214 INFO L158 Benchmark]: Boogie Preprocessor took 31.61ms. Allocated memory is still 295.7MB. Free memory was 236.5MB in the beginning and 234.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:09:13,214 INFO L158 Benchmark]: RCFGBuilder took 368.06ms. Allocated memory is still 295.7MB. Free memory was 234.2MB in the beginning and 217.1MB in the end (delta: 17.0MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-21 19:09:13,216 INFO L158 Benchmark]: TraceAbstraction took 889896.92ms. Allocated memory is still 295.7MB. Free memory was 216.3MB in the beginning and 175.4MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-12-21 19:09:13,217 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 158.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.75ms. Allocated memory is still 295.7MB. Free memory was 250.1MB in the beginning and 238.4MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.21ms. Allocated memory is still 295.7MB. Free memory was 238.4MB in the beginning and 236.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.61ms. Allocated memory is still 295.7MB. Free memory was 236.5MB in the beginning and 234.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 368.06ms. Allocated memory is still 295.7MB. Free memory was 234.2MB in the beginning and 217.1MB in the end (delta: 17.0MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 889896.92ms. Allocated memory is still 295.7MB. Free memory was 216.3MB in the beginning and 175.4MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was analyzing trace of length 40 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1959125064] and IpTcStrategyModuleCvc4 [764945613]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 889.8s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 423 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 423 mSDsluCounter, 501 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 374 mSDsCounter, 170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1624 IncrementalHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 170 mSolverCounterUnsat, 127 mSDtfsCounter, 1624 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 266 SyntacticMatches, 6 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=8, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 66 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 10.9s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 221 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 352 ConstructedInterpolants, 1 QuantifiedInterpolants, 2086 SizeOfPredicates, 24 NumberOfNonLiveVariables, 548 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 93/171 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