/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/eca-rers2012/Problem19_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 17:06:11,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 17:06:11,207 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 17:06:11,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 17:06:11,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 17:06:11,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 17:06:11,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 17:06:11,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 17:06:11,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 17:06:11,237 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 17:06:11,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 17:06:11,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 17:06:11,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 17:06:11,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 17:06:11,239 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 17:06:11,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 17:06:11,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 17:06:11,239 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 17:06:11,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 17:06:11,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 17:06:11,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 17:06:11,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 17:06:11,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 17:06:11,240 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 17:06:11,241 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 17:06:11,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 17:06:11,241 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 17:06:11,241 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 17:06:11,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 17:06:11,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 17:06:11,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 17:06:11,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 17:06:11,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 17:06:11,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 17:06:11,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 17:06:11,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 17:06:11,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 17:06:11,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 17:06:11,243 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 17:06:11,243 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 17:06:11,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 17:06:11,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 17:06:11,244 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 17:06:11,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 17:06:11,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 17:06:11,244 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 17:06:11,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 17:06:11,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 17:06:11,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 17:06:11,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 17:06:11,437 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 17:06:11,439 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 17:06:11,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label07.c [2023-12-22 17:06:12,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 17:06:12,979 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 17:06:12,980 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label07.c [2023-12-22 17:06:13,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4948f8ea4/a4076f4fa7a94f5096c5e1d27f2d16e7/FLAGbd82a7490 [2023-12-22 17:06:13,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4948f8ea4/a4076f4fa7a94f5096c5e1d27f2d16e7 [2023-12-22 17:06:13,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 17:06:13,043 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 17:06:13,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 17:06:13,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 17:06:13,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 17:06:13,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:06:13" (1/1) ... [2023-12-22 17:06:13,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f22311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:13, skipping insertion in model container [2023-12-22 17:06:13,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:06:13" (1/1) ... [2023-12-22 17:06:13,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 17:06:13,453 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label07.c[7920,7933] [2023-12-22 17:06:14,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 17:06:14,455 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 17:06:14,479 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label07.c[7920,7933] [2023-12-22 17:06:15,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 17:06:15,141 INFO L206 MainTranslator]: Completed translation [2023-12-22 17:06:15,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15 WrapperNode [2023-12-22 17:06:15,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 17:06:15,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 17:06:15,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 17:06:15,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 17:06:15,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,503 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9424 [2023-12-22 17:06:15,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 17:06:15,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 17:06:15,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 17:06:15,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 17:06:15,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,573 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,661 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 17:06:15,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:15,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:16,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 17:06:16,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 17:06:16,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 17:06:16,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 17:06:16,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (1/1) ... [2023-12-22 17:06:16,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 17:06:16,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 17:06:16,045 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) [2023-12-22 17:06:16,073 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 [2023-12-22 17:06:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 17:06:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 17:06:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 17:06:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 17:06:16,172 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 17:06:16,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 17:07:19,436 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 17:07:19,514 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 17:07:19,515 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 17:07:19,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:07:19 BoogieIcfgContainer [2023-12-22 17:07:19,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 17:07:19,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 17:07:19,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 17:07:19,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 17:07:19,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:06:13" (1/3) ... [2023-12-22 17:07:19,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e21c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:07:19, skipping insertion in model container [2023-12-22 17:07:19,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:15" (2/3) ... [2023-12-22 17:07:19,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e21c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:07:19, skipping insertion in model container [2023-12-22 17:07:19,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:07:19" (3/3) ... [2023-12-22 17:07:19,521 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label07.c [2023-12-22 17:07:19,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 17:07:19,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 17:07:19,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 17:07:19,601 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;@42f757f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 17:07:19,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 17:07:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:07:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 17:07:19,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 17:07:19,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:07:19,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 17:07:19,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 17:07:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash 42518515, now seen corresponding path program 1 times [2023-12-22 17:07:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 17:07:19,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746011234] [2023-12-22 17:07:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 17:07:19,636 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 [2023-12-22 17:07:19,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 17:07:19,638 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) [2023-12-22 17:07:19,668 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 [2023-12-22 17:07:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 17:07:19,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 17:07:19,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 17:07:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 17:07:19,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 17:07:19,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 17:07:19,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746011234] [2023-12-22 17:07:19,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746011234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 17:07:19,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 17:07:19,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 17:07:19,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465066113] [2023-12-22 17:07:19,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 17:07:19,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 17:07:19,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 17:07:19,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 17:07:19,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 17:07:19,805 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:07:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 17:07:19,913 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2023-12-22 17:07:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 17:07:19,915 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-22 17:07:19,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 17:07:19,943 INFO L225 Difference]: With dead ends: 3371 [2023-12-22 17:07:19,944 INFO L226 Difference]: Without dead ends: 1684 [2023-12-22 17:07:19,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 17:07:19,958 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 17:07:19,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 17:07:19,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-22 17:07:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-12-22 17:07:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:07:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2023-12-22 17:07:20,132 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 60 [2023-12-22 17:07:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 17:07:20,133 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2023-12-22 17:07:20,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:07:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2023-12-22 17:07:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 17:07:20,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 17:07:20,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:07:20,142 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 [2023-12-22 17:07:20,339 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 [2023-12-22 17:07:20,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 17:07:20,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 17:07:20,342 INFO L85 PathProgramCache]: Analyzing trace with hash 213981920, now seen corresponding path program 1 times [2023-12-22 17:07:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 17:07:20,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313754382] [2023-12-22 17:07:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 17:07:20,343 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 [2023-12-22 17:07:20,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 17:07:20,360 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) [2023-12-22 17:07:20,364 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 [2023-12-22 17:07:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 17:07:20,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 17:07:20,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 17:07:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 17:07:20,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 17:07:20,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 17:07:20,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313754382] [2023-12-22 17:07:20,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313754382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 17:07:20,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 17:07:20,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 17:07:20,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190505071] [2023-12-22 17:07:20,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 17:07:20,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 17:07:20,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 17:07:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 17:07:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:07:20,726 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:08:53,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 17:08:53,321 INFO L93 Difference]: Finished difference Result 4782 states and 8990 transitions. [2023-12-22 17:08:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 17:08:53,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-22 17:08:53,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 17:08:53,332 INFO L225 Difference]: With dead ends: 4782 [2023-12-22 17:08:53,333 INFO L226 Difference]: Without dead ends: 3099 [2023-12-22 17:08:53,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:08:53,336 INFO L413 NwaCegarLoop]: 1477 mSDtfsCounter, 1418 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4446 mSolverCounterSat, 1139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 5585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1139 IncrementalHoareTripleChecker+Valid, 4446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.2s IncrementalHoareTripleChecker+Time [2023-12-22 17:08:53,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 1679 Invalid, 5585 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1139 Valid, 4446 Invalid, 0 Unknown, 0 Unchecked, 92.2s Time] [2023-12-22 17:08:53,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2023-12-22 17:08:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 3097. [2023-12-22 17:08:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 3096 states have (on average 1.571705426356589) internal successors, (4866), 3096 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:08:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4866 transitions. [2023-12-22 17:08:53,389 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4866 transitions. Word has length 60 [2023-12-22 17:08:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 17:08:53,390 INFO L495 AbstractCegarLoop]: Abstraction has 3097 states and 4866 transitions. [2023-12-22 17:08:53,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:08:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4866 transitions. [2023-12-22 17:08:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-22 17:08:53,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 17:08:53,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:08:53,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-22 17:08:53,599 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 [2023-12-22 17:08:53,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 17:08:53,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 17:08:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash -657836965, now seen corresponding path program 1 times [2023-12-22 17:08:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 17:08:53,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229011054] [2023-12-22 17:08:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 17:08:53,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 17:08:53,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 17:08:53,608 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) [2023-12-22 17:08:53,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 17:08:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 17:08:53,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 17:08:53,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 17:08:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 17:08:53,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 17:08:53,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 17:08:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229011054] [2023-12-22 17:08:53,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229011054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 17:08:53,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 17:08:53,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 17:08:53,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934116579] [2023-12-22 17:08:53,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 17:08:53,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 17:08:53,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 17:08:53,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 17:08:53,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:08:53,992 INFO L87 Difference]: Start difference. First operand 3097 states and 4866 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:10:44,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 17:10:44,683 INFO L93 Difference]: Finished difference Result 9073 states and 14291 transitions. [2023-12-22 17:10:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 17:10:44,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-22 17:10:44,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 17:10:44,704 INFO L225 Difference]: With dead ends: 9073 [2023-12-22 17:10:44,704 INFO L226 Difference]: Without dead ends: 5977 [2023-12-22 17:10:44,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:10:44,708 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2516 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 5283 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 5283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.3s IncrementalHoareTripleChecker+Time [2023-12-22 17:10:44,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2516 Valid, 987 Invalid, 5548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [265 Valid, 5283 Invalid, 0 Unknown, 0 Unchecked, 110.3s Time] [2023-12-22 17:10:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5977 states. [2023-12-22 17:10:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5977 to 5974. [2023-12-22 17:10:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5974 states, 5973 states have (on average 1.5220157374853507) internal successors, (9091), 5973 states have internal predecessors, (9091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:10:44,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5974 states to 5974 states and 9091 transitions. [2023-12-22 17:10:44,789 INFO L78 Accepts]: Start accepts. Automaton has 5974 states and 9091 transitions. Word has length 129 [2023-12-22 17:10:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 17:10:44,789 INFO L495 AbstractCegarLoop]: Abstraction has 5974 states and 9091 transitions. [2023-12-22 17:10:44,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:10:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5974 states and 9091 transitions. [2023-12-22 17:10:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-22 17:10:44,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 17:10:44,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:10:44,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-22 17:10:44,994 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 [2023-12-22 17:10:44,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 17:10:44,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 17:10:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash -232366008, now seen corresponding path program 1 times [2023-12-22 17:10:44,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 17:10:44,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110286662] [2023-12-22 17:10:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 17:10:44,998 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 [2023-12-22 17:10:44,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 17:10:44,999 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) [2023-12-22 17:10:45,019 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 [2023-12-22 17:10:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 17:10:45,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 17:10:45,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 17:10:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 17:10:45,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 17:10:45,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 17:10:45,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110286662] [2023-12-22 17:10:45,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110286662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 17:10:45,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 17:10:45,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 17:10:45,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430383491] [2023-12-22 17:10:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 17:10:45,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 17:10:45,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 17:10:45,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 17:10:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:10:45,505 INFO L87 Difference]: Start difference. First operand 5974 states and 9091 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:12:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 17:12:24,351 INFO L93 Difference]: Finished difference Result 14707 states and 22257 transitions. [2023-12-22 17:12:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 17:12:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-22 17:12:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 17:12:24,375 INFO L225 Difference]: With dead ends: 14707 [2023-12-22 17:12:24,375 INFO L226 Difference]: Without dead ends: 8734 [2023-12-22 17:12:24,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:12:24,446 INFO L413 NwaCegarLoop]: 1702 mSDtfsCounter, 1448 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 4770 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 5493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 4770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.5s IncrementalHoareTripleChecker+Time [2023-12-22 17:12:24,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 1922 Invalid, 5493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [723 Valid, 4770 Invalid, 0 Unknown, 0 Unchecked, 98.5s Time] [2023-12-22 17:12:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8734 states. [2023-12-22 17:12:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8734 to 8718. [2023-12-22 17:12:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8718 states, 8717 states have (on average 1.404955833428932) internal successors, (12247), 8717 states have internal predecessors, (12247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:12:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8718 states to 8718 states and 12247 transitions. [2023-12-22 17:12:24,559 INFO L78 Accepts]: Start accepts. Automaton has 8718 states and 12247 transitions. Word has length 151 [2023-12-22 17:12:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 17:12:24,560 INFO L495 AbstractCegarLoop]: Abstraction has 8718 states and 12247 transitions. [2023-12-22 17:12:24,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:12:24,560 INFO L276 IsEmpty]: Start isEmpty. Operand 8718 states and 12247 transitions. [2023-12-22 17:12:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-22 17:12:24,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 17:12:24,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:12:24,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-22 17:12:24,764 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 [2023-12-22 17:12:24,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 17:12:24,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 17:12:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash -214680137, now seen corresponding path program 1 times [2023-12-22 17:12:24,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 17:12:24,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39370742] [2023-12-22 17:12:24,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 17:12:24,767 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 [2023-12-22 17:12:24,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 17:12:24,783 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) [2023-12-22 17:12:24,813 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 [2023-12-22 17:12:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 17:12:24,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 17:12:24,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 17:12:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 17:12:25,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 17:12:25,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 17:12:25,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39370742] [2023-12-22 17:12:25,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39370742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 17:12:25,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 17:12:25,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 17:12:25,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216863088] [2023-12-22 17:12:25,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 17:12:25,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 17:12:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 17:12:25,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 17:12:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:12:25,366 INFO L87 Difference]: Start difference. First operand 8718 states and 12247 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:14:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 17:14:01,717 INFO L93 Difference]: Finished difference Result 22906 states and 31674 transitions. [2023-12-22 17:14:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 17:14:01,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-12-22 17:14:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 17:14:01,756 INFO L225 Difference]: With dead ends: 22906 [2023-12-22 17:14:01,756 INFO L226 Difference]: Without dead ends: 14189 [2023-12-22 17:14:01,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:14:01,765 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 1375 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 4353 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 5273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 4353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.9s IncrementalHoareTripleChecker+Time [2023-12-22 17:14:01,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 1917 Invalid, 5273 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [920 Valid, 4353 Invalid, 0 Unknown, 0 Unchecked, 95.9s Time] [2023-12-22 17:14:01,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14189 states. [2023-12-22 17:14:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14189 to 14185. [2023-12-22 17:14:01,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14185 states, 14184 states have (on average 1.2659334461364917) internal successors, (17956), 14184 states have internal predecessors, (17956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:14:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14185 states to 14185 states and 17956 transitions. [2023-12-22 17:14:01,946 INFO L78 Accepts]: Start accepts. Automaton has 14185 states and 17956 transitions. Word has length 157 [2023-12-22 17:14:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 17:14:01,948 INFO L495 AbstractCegarLoop]: Abstraction has 14185 states and 17956 transitions. [2023-12-22 17:14:01,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:14:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14185 states and 17956 transitions. [2023-12-22 17:14:01,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-22 17:14:01,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 17:14:01,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:14:01,969 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 [2023-12-22 17:14:02,162 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 [2023-12-22 17:14:02,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 17:14:02,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 17:14:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1808085812, now seen corresponding path program 1 times [2023-12-22 17:14:02,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 17:14:02,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692123032] [2023-12-22 17:14:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 17:14:02,166 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 [2023-12-22 17:14:02,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 17:14:02,167 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) [2023-12-22 17:14:02,167 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 [2023-12-22 17:14:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 17:14:02,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 17:14:02,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 17:14:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 17:14:04,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 17:14:04,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 17:14:04,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692123032] [2023-12-22 17:14:04,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692123032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 17:14:04,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 17:14:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 17:14:04,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440599458] [2023-12-22 17:14:04,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 17:14:04,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 17:14:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 17:14:04,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 17:14:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:14:04,490 INFO L87 Difference]: Start difference. First operand 14185 states and 17956 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:15:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 17:15:25,698 INFO L93 Difference]: Finished difference Result 24260 states and 31348 transitions. [2023-12-22 17:15:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 17:15:25,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2023-12-22 17:15:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 17:15:25,734 INFO L225 Difference]: With dead ends: 24260 [2023-12-22 17:15:25,735 INFO L226 Difference]: Without dead ends: 15550 [2023-12-22 17:15:25,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:15:25,746 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1161 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4334 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 4339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.8s IncrementalHoareTripleChecker+Time [2023-12-22 17:15:25,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 1941 Invalid, 4339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 4334 Invalid, 0 Unknown, 0 Unchecked, 80.8s Time] [2023-12-22 17:15:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15550 states. [2023-12-22 17:15:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15550 to 15550. [2023-12-22 17:15:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15550 states, 15549 states have (on average 1.2433597015885265) internal successors, (19333), 15549 states have internal predecessors, (19333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:15:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15550 states to 15550 states and 19333 transitions. [2023-12-22 17:15:25,921 INFO L78 Accepts]: Start accepts. Automaton has 15550 states and 19333 transitions. Word has length 267 [2023-12-22 17:15:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 17:15:25,921 INFO L495 AbstractCegarLoop]: Abstraction has 15550 states and 19333 transitions. [2023-12-22 17:15:25,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:15:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 15550 states and 19333 transitions. [2023-12-22 17:15:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-22 17:15:25,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 17:15:25,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:15:25,937 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 [2023-12-22 17:15:26,130 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 [2023-12-22 17:15:26,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 17:15:26,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 17:15:26,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1009904570, now seen corresponding path program 1 times [2023-12-22 17:15:26,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 17:15:26,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929126091] [2023-12-22 17:15:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 17:15:26,133 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 [2023-12-22 17:15:26,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 17:15:26,135 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) [2023-12-22 17:15:26,135 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 [2023-12-22 17:15:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 17:15:26,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 17:15:26,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 17:15:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-22 17:15:31,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 17:15:31,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 17:15:31,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929126091] [2023-12-22 17:15:31,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929126091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 17:15:31,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 17:15:31,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 17:15:31,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967375184] [2023-12-22 17:15:31,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 17:15:31,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 17:15:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 17:15:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 17:15:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 17:15:31,441 INFO L87 Difference]: Start difference. First operand 15550 states and 19333 transitions. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:16:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 17:16:53,903 INFO L93 Difference]: Finished difference Result 24291 states and 31373 transitions. [2023-12-22 17:16:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 17:16:53,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 455 [2023-12-22 17:16:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 17:16:53,926 INFO L225 Difference]: With dead ends: 24291 [2023-12-22 17:16:53,926 INFO L226 Difference]: Without dead ends: 10076 [2023-12-22 17:16:53,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 17:16:53,937 INFO L413 NwaCegarLoop]: 1767 mSDtfsCounter, 1151 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5715 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 5723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.0s IncrementalHoareTripleChecker+Time [2023-12-22 17:16:53,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1945 Invalid, 5723 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 5715 Invalid, 0 Unknown, 0 Unchecked, 82.0s Time] [2023-12-22 17:16:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10076 states. [2023-12-22 17:16:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10076 to 10076. [2023-12-22 17:16:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10076 states, 10075 states have (on average 1.3278411910669976) internal successors, (13378), 10075 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:16:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10076 states to 10076 states and 13378 transitions. [2023-12-22 17:16:54,053 INFO L78 Accepts]: Start accepts. Automaton has 10076 states and 13378 transitions. Word has length 455 [2023-12-22 17:16:54,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 17:16:54,053 INFO L495 AbstractCegarLoop]: Abstraction has 10076 states and 13378 transitions. [2023-12-22 17:16:54,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:16:54,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10076 states and 13378 transitions. [2023-12-22 17:16:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-22 17:16:54,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 17:16:54,063 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:16:54,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-22 17:16:54,267 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 [2023-12-22 17:16:54,268 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 17:16:54,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 17:16:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash 821022440, now seen corresponding path program 1 times [2023-12-22 17:16:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 17:16:54,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294760859] [2023-12-22 17:16:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 17:16:54,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 17:16:54,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 17:16:54,273 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) [2023-12-22 17:16:54,279 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 [2023-12-22 17:16:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 17:16:54,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 17:16:54,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 17:16:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-22 17:16:56,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 17:16:56,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 17:16:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294760859] [2023-12-22 17:16:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294760859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 17:16:56,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 17:16:56,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 17:16:56,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190233019] [2023-12-22 17:16:56,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 17:16:56,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 17:16:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 17:16:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 17:16:56,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:16:56,679 INFO L87 Difference]: Start difference. First operand 10076 states and 13378 transitions. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 2 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:19:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 17:19:02,755 INFO L93 Difference]: Finished difference Result 28471 states and 38229 transitions. [2023-12-22 17:19:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 17:19:02,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 2 states have internal predecessors, (584), 0 states have call successors, (0), 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 642 [2023-12-22 17:19:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 17:19:02,785 INFO L225 Difference]: With dead ends: 28471 [2023-12-22 17:19:02,785 INFO L226 Difference]: Without dead ends: 19761 [2023-12-22 17:19:02,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 17:19:02,795 INFO L413 NwaCegarLoop]: 1885 mSDtfsCounter, 1019 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 5068 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 6080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 5068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.6s IncrementalHoareTripleChecker+Time [2023-12-22 17:19:02,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 2052 Invalid, 6080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1012 Valid, 5068 Invalid, 0 Unknown, 0 Unchecked, 125.6s Time] [2023-12-22 17:19:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19761 states. [2023-12-22 17:19:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19761 to 19707. [2023-12-22 17:19:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19707 states, 19706 states have (on average 1.229371764944687) internal successors, (24226), 19706 states have internal predecessors, (24226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:19:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19707 states to 19707 states and 24226 transitions. [2023-12-22 17:19:02,990 INFO L78 Accepts]: Start accepts. Automaton has 19707 states and 24226 transitions. Word has length 642 [2023-12-22 17:19:02,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 17:19:02,992 INFO L495 AbstractCegarLoop]: Abstraction has 19707 states and 24226 transitions. [2023-12-22 17:19:02,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 2 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:19:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 19707 states and 24226 transitions. [2023-12-22 17:19:02,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-22 17:19:02,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 17:19:02,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:19:03,004 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 [2023-12-22 17:19:03,200 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 [2023-12-22 17:19:03,200 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 17:19:03,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 17:19:03,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1671976756, now seen corresponding path program 1 times [2023-12-22 17:19:03,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 17:19:03,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234238182] [2023-12-22 17:19:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 17:19:03,205 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 [2023-12-22 17:19:03,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 17:19:03,206 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) [2023-12-22 17:19:03,207 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 [2023-12-22 17:19:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 17:19:03,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 17:19:03,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 17:19:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 117 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 17:19:06,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 17:19:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 17:19:06,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 17:19:06,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234238182] [2023-12-22 17:19:06,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234238182] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 17:19:06,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 17:19:06,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 17:19:06,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005873928] [2023-12-22 17:19:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 17:19:06,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 17:19:06,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 17:19:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 17:19:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 17:19:06,763 INFO L87 Difference]: Start difference. First operand 19707 states and 24226 transitions. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 17:19:13,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 17:19:15,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 17:20:05,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 17:20:30,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 17:20:37,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-22 17:20:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 17:20:47,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1297 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 17:20:47,777 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 1461 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 3375 mSolverCounterSat, 1166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 4541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1166 IncrementalHoareTripleChecker+Valid, 3375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.6s IncrementalHoareTripleChecker+Time [2023-12-22 17:20:47,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 965 Invalid, 4541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1166 Valid, 3375 Invalid, 0 Unknown, 0 Unchecked, 100.6s Time] [2023-12-22 17:20:47,778 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 17:20:47,783 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 (10)] Ended with exit code 0 [2023-12-22 17:20:47,807 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 [2023-12-22 17:20:47,813 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 17:20:47,979 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 [2023-12-22 17:20:47,980 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (19707states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (32665 states constructed, input type IntersectNwa). [2023-12-22 17:20:47,984 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 17:20:47,985 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 17:20:47,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:20:47 BoogieIcfgContainer [2023-12-22 17:20:47,987 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 17:20:47,987 INFO L158 Benchmark]: Toolchain (without parser) took 874944.48ms. Allocated memory was 290.5MB in the beginning and 769.7MB in the end (delta: 479.2MB). Free memory was 212.0MB in the beginning and 294.6MB in the end (delta: -82.6MB). Peak memory consumption was 575.6MB. Max. memory is 8.0GB. [2023-12-22 17:20:47,987 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 223.3MB. Free memory is still 174.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 17:20:47,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2097.27ms. Allocated memory was 290.5MB in the beginning and 384.8MB in the end (delta: 94.4MB). Free memory was 211.7MB in the beginning and 215.3MB in the end (delta: -3.5MB). Peak memory consumption was 114.9MB. Max. memory is 8.0GB. [2023-12-22 17:20:47,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 360.63ms. Allocated memory is still 384.8MB. Free memory was 215.3MB in the beginning and 259.8MB in the end (delta: -44.6MB). Peak memory consumption was 99.6MB. Max. memory is 8.0GB. [2023-12-22 17:20:47,988 INFO L158 Benchmark]: Boogie Preprocessor took 514.70ms. Allocated memory is still 384.8MB. Free memory was 259.8MB in the beginning and 211.1MB in the end (delta: 48.8MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-12-22 17:20:47,988 INFO L158 Benchmark]: RCFGBuilder took 63495.96ms. Allocated memory was 384.8MB in the beginning and 769.7MB in the end (delta: 384.8MB). Free memory was 211.1MB in the beginning and 268.7MB in the end (delta: -57.7MB). Peak memory consumption was 329.8MB. Max. memory is 8.0GB. [2023-12-22 17:20:47,988 INFO L158 Benchmark]: TraceAbstraction took 808469.98ms. Allocated memory is still 769.7MB. Free memory was 268.2MB in the beginning and 294.6MB in the end (delta: -26.4MB). Peak memory consumption was 151.9MB. Max. memory is 8.0GB. [2023-12-22 17:20:47,989 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 223.3MB. Free memory is still 174.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2097.27ms. Allocated memory was 290.5MB in the beginning and 384.8MB in the end (delta: 94.4MB). Free memory was 211.7MB in the beginning and 215.3MB in the end (delta: -3.5MB). Peak memory consumption was 114.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 360.63ms. Allocated memory is still 384.8MB. Free memory was 215.3MB in the beginning and 259.8MB in the end (delta: -44.6MB). Peak memory consumption was 99.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 514.70ms. Allocated memory is still 384.8MB. Free memory was 259.8MB in the beginning and 211.1MB in the end (delta: 48.8MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. * RCFGBuilder took 63495.96ms. Allocated memory was 384.8MB in the beginning and 769.7MB in the end (delta: 384.8MB). Free memory was 211.1MB in the beginning and 268.7MB in the end (delta: -57.7MB). Peak memory consumption was 329.8MB. Max. memory is 8.0GB. * TraceAbstraction took 808469.98ms. Allocated memory is still 769.7MB. Free memory was 268.2MB in the beginning and 294.6MB in the end (delta: -26.4MB). Peak memory consumption was 151.9MB. 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: 209]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 209). Cancelled while NwaCegarLoop was constructing difference of abstraction (19707states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (32665 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1686 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 808.4s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 789.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11549 SdHoareTripleChecker+Valid, 786.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11549 mSDsluCounter, 16546 SdHoareTripleChecker+Invalid, 652.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1593 mSDsCounter, 5238 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37346 IncrementalHoareTripleChecker+Invalid, 42584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5238 mSolverCounterUnsat, 14953 mSDtfsCounter, 37346 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3213 GetRequests, 3202 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19707occurred in iteration=8, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 79 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 2572 NumberOfCodeBlocks, 2572 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3213 ConstructedInterpolants, 0 QuantifiedInterpolants, 13668 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2958 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 1065/1168 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