/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/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:02:05,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:02:05,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 18:02:05,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:02:05,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:02:05,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:02:05,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:02:05,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:02:05,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:02:05,534 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:02:05,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:02:05,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:02:05,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:02:05,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:02:05,536 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:02:05,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:02:05,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:02:05,537 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 18:02:05,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 18:02:05,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:02:05,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:02:05,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:02:05,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:02:05,541 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 18:02:05,542 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 18:02:05,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:02:05,542 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 18:02:05,542 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 18:02:05,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:02:05,542 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:02:05,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:02:05,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:02:05,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:02:05,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:02:05,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:02:05,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:02:05,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:02:05,545 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:02:05,545 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 18:02:05,545 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 18:02:05,545 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:02:05,545 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:02:05,545 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:02:05,545 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:02:05,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:02:05,546 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 18:02:05,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 18:02:05,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:02:05,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:02:05,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:02:05,793 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:02:05,793 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:02:05,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-16 18:02:07,000 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:02:07,191 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:02:07,191 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-16 18:02:07,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69f6a5557/12d88f07acb0450782e4c61c483ca094/FLAG3dafb75d9 [2023-12-16 18:02:07,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69f6a5557/12d88f07acb0450782e4c61c483ca094 [2023-12-16 18:02:07,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:02:07,214 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:02:07,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:02:07,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:02:07,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:02:07,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789ed433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07, skipping insertion in model container [2023-12-16 18:02:07,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,266 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:02:07,448 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2023-12-16 18:02:07,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:02:07,468 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:02:07,509 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2023-12-16 18:02:07,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:02:07,523 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:02:07,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07 WrapperNode [2023-12-16 18:02:07,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:02:07,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:02:07,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:02:07,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:02:07,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,563 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 206 [2023-12-16 18:02:07,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:02:07,564 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:02:07,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:02:07,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:02:07,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,581 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,600 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]. [2023-12-16 18:02:07,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:02:07,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:02:07,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:02:07,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:02:07,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (1/1) ... [2023-12-16 18:02:07,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:02:07,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:02:07,663 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) [2023-12-16 18:02:07,665 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 [2023-12-16 18:02:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:02:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 18:02:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:02:07,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:02:07,776 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:02:07,778 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:02:08,137 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:02:08,174 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:02:08,175 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 18:02:08,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:02:08 BoogieIcfgContainer [2023-12-16 18:02:08,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:02:08,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:02:08,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:02:08,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:02:08,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:02:07" (1/3) ... [2023-12-16 18:02:08,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64521d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:02:08, skipping insertion in model container [2023-12-16 18:02:08,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:07" (2/3) ... [2023-12-16 18:02:08,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64521d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:02:08, skipping insertion in model container [2023-12-16 18:02:08,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:02:08" (3/3) ... [2023-12-16 18:02:08,184 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-16 18:02:08,199 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:02:08,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 18:02:08,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:02:08,236 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;@8356af2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:02:08,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 18:02:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 50 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 18:02:08,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:08,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:08,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:08,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash -417268953, now seen corresponding path program 1 times [2023-12-16 18:02:08,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:08,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96396512] [2023-12-16 18:02:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:08,260 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 [2023-12-16 18:02:08,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:08,264 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) [2023-12-16 18:02:08,266 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 [2023-12-16 18:02:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:08,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 18:02:08,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:08,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:08,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:08,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96396512] [2023-12-16 18:02:08,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96396512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:08,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:08,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 18:02:08,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633890050] [2023-12-16 18:02:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:08,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 18:02:08,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 18:02:08,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 18:02:08,429 INFO L87 Difference]: Start difference. First operand has 51 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 50 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:08,471 INFO L93 Difference]: Finished difference Result 81 states and 137 transitions. [2023-12-16 18:02:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 18:02:08,475 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-16 18:02:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:08,484 INFO L225 Difference]: With dead ends: 81 [2023-12-16 18:02:08,484 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 18:02:08,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 18:02:08,491 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:08,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 18:02:08,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-16 18:02:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 48 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 82 transitions. [2023-12-16 18:02:08,519 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 82 transitions. Word has length 16 [2023-12-16 18:02:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:08,519 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 82 transitions. [2023-12-16 18:02:08,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2023-12-16 18:02:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 18:02:08,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:08,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:08,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:08,722 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 [2023-12-16 18:02:08,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:08,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:08,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1004074967, now seen corresponding path program 1 times [2023-12-16 18:02:08,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:08,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477171718] [2023-12-16 18:02:08,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:08,724 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 [2023-12-16 18:02:08,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:08,726 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) [2023-12-16 18:02:08,749 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 [2023-12-16 18:02:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:08,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:02:08,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:08,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:08,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:08,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477171718] [2023-12-16 18:02:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477171718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:08,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:02:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747614808] [2023-12-16 18:02:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:08,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:02:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:02:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:02:08,831 INFO L87 Difference]: Start difference. First operand 49 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:08,869 INFO L93 Difference]: Finished difference Result 81 states and 131 transitions. [2023-12-16 18:02:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:02:08,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-16 18:02:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:08,870 INFO L225 Difference]: With dead ends: 81 [2023-12-16 18:02:08,870 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 18:02:08,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:02:08,872 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:08,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 18:02:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-16 18:02:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2023-12-16 18:02:08,877 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 16 [2023-12-16 18:02:08,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:08,877 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2023-12-16 18:02:08,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2023-12-16 18:02:08,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 18:02:08,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:08,879 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] [2023-12-16 18:02:08,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:09,081 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 [2023-12-16 18:02:09,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:09,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 871528204, now seen corresponding path program 1 times [2023-12-16 18:02:09,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:09,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608773605] [2023-12-16 18:02:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:09,083 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 [2023-12-16 18:02:09,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:09,085 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) [2023-12-16 18:02:09,110 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 [2023-12-16 18:02:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:09,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:02:09,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:09,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:09,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:09,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608773605] [2023-12-16 18:02:09,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608773605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:09,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:09,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:02:09,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699316921] [2023-12-16 18:02:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:09,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:02:09,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:09,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:02:09,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:09,434 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:09,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:09,546 INFO L93 Difference]: Finished difference Result 165 states and 250 transitions. [2023-12-16 18:02:09,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:02:09,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-16 18:02:09,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:09,550 INFO L225 Difference]: With dead ends: 165 [2023-12-16 18:02:09,550 INFO L226 Difference]: Without dead ends: 136 [2023-12-16 18:02:09,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:09,551 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 125 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:09,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 253 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:02:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-16 18:02:09,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 103. [2023-12-16 18:02:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.5) internal successors, (153), 102 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 153 transitions. [2023-12-16 18:02:09,564 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 153 transitions. Word has length 31 [2023-12-16 18:02:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:09,565 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 153 transitions. [2023-12-16 18:02:09,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 153 transitions. [2023-12-16 18:02:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 18:02:09,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:09,566 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] [2023-12-16 18:02:09,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:09,769 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 [2023-12-16 18:02:09,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:09,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash -739726020, now seen corresponding path program 1 times [2023-12-16 18:02:09,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:09,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865448698] [2023-12-16 18:02:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:09,771 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 [2023-12-16 18:02:09,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:09,773 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) [2023-12-16 18:02:09,775 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 [2023-12-16 18:02:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:09,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:09,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:09,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:09,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:09,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865448698] [2023-12-16 18:02:09,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865448698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:09,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:09,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:09,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977343371] [2023-12-16 18:02:09,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:09,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:09,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:09,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:09,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:09,896 INFO L87 Difference]: Start difference. First operand 103 states and 153 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:09,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:09,919 INFO L93 Difference]: Finished difference Result 253 states and 391 transitions. [2023-12-16 18:02:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:09,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-16 18:02:09,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:09,925 INFO L225 Difference]: With dead ends: 253 [2023-12-16 18:02:09,925 INFO L226 Difference]: Without dead ends: 170 [2023-12-16 18:02:09,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:09,930 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 26 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:09,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 102 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-16 18:02:09,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2023-12-16 18:02:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.5089820359281436) internal successors, (252), 167 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 252 transitions. [2023-12-16 18:02:09,954 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 252 transitions. Word has length 33 [2023-12-16 18:02:09,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:09,954 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 252 transitions. [2023-12-16 18:02:09,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:09,954 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 252 transitions. [2023-12-16 18:02:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 18:02:09,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:09,956 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] [2023-12-16 18:02:09,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:10,158 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 [2023-12-16 18:02:10,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:10,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1404220512, now seen corresponding path program 1 times [2023-12-16 18:02:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:10,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061503386] [2023-12-16 18:02:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:10,161 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 [2023-12-16 18:02:10,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:10,162 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) [2023-12-16 18:02:10,188 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 [2023-12-16 18:02:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:10,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:02:10,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:10,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:10,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061503386] [2023-12-16 18:02:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061503386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:10,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:10,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:02:10,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6871910] [2023-12-16 18:02:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:10,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:02:10,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:02:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:02:10,266 INFO L87 Difference]: Start difference. First operand 168 states and 252 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:10,292 INFO L93 Difference]: Finished difference Result 182 states and 269 transitions. [2023-12-16 18:02:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:02:10,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-16 18:02:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:10,294 INFO L225 Difference]: With dead ends: 182 [2023-12-16 18:02:10,295 INFO L226 Difference]: Without dead ends: 180 [2023-12-16 18:02:10,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:02:10,296 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 1 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:10,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 178 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:10,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-16 18:02:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-12-16 18:02:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.48) internal successors, (259), 175 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 259 transitions. [2023-12-16 18:02:10,321 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 259 transitions. Word has length 34 [2023-12-16 18:02:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:10,321 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 259 transitions. [2023-12-16 18:02:10,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 259 transitions. [2023-12-16 18:02:10,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 18:02:10,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:10,323 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] [2023-12-16 18:02:10,328 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 [2023-12-16 18:02:10,528 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 [2023-12-16 18:02:10,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:10,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1768252524, now seen corresponding path program 1 times [2023-12-16 18:02:10,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:10,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750742721] [2023-12-16 18:02:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:10,530 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 [2023-12-16 18:02:10,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:10,531 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) [2023-12-16 18:02:10,532 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 [2023-12-16 18:02:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:10,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:10,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:10,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:10,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:10,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750742721] [2023-12-16 18:02:10,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750742721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:10,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:10,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027038777] [2023-12-16 18:02:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:10,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:10,643 INFO L87 Difference]: Start difference. First operand 176 states and 259 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:10,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:10,660 INFO L93 Difference]: Finished difference Result 344 states and 519 transitions. [2023-12-16 18:02:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:10,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-16 18:02:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:10,662 INFO L225 Difference]: With dead ends: 344 [2023-12-16 18:02:10,662 INFO L226 Difference]: Without dead ends: 255 [2023-12-16 18:02:10,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:10,663 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 36 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:10,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-16 18:02:10,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2023-12-16 18:02:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.4880952380952381) internal successors, (375), 252 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 375 transitions. [2023-12-16 18:02:10,686 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 375 transitions. Word has length 35 [2023-12-16 18:02:10,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:10,688 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 375 transitions. [2023-12-16 18:02:10,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 375 transitions. [2023-12-16 18:02:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 18:02:10,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:10,693 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] [2023-12-16 18:02:10,698 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 [2023-12-16 18:02:10,895 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 [2023-12-16 18:02:10,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:10,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:10,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1901058708, now seen corresponding path program 1 times [2023-12-16 18:02:10,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:10,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771765311] [2023-12-16 18:02:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:10,897 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 [2023-12-16 18:02:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:10,898 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) [2023-12-16 18:02:10,899 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 [2023-12-16 18:02:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:10,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:10,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:10,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:10,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:10,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771765311] [2023-12-16 18:02:10,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771765311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:10,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:10,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:10,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081362056] [2023-12-16 18:02:10,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:10,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:10,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:10,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:10,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:10,975 INFO L87 Difference]: Start difference. First operand 253 states and 375 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:10,995 INFO L93 Difference]: Finished difference Result 679 states and 1018 transitions. [2023-12-16 18:02:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:10,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-16 18:02:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:10,997 INFO L225 Difference]: With dead ends: 679 [2023-12-16 18:02:10,998 INFO L226 Difference]: Without dead ends: 448 [2023-12-16 18:02:10,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:10,999 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 34 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:10,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-16 18:02:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2023-12-16 18:02:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.4719101123595506) internal successors, (655), 445 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 655 transitions. [2023-12-16 18:02:11,014 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 655 transitions. Word has length 35 [2023-12-16 18:02:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:11,015 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 655 transitions. [2023-12-16 18:02:11,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 655 transitions. [2023-12-16 18:02:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 18:02:11,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:11,016 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] [2023-12-16 18:02:11,020 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 [2023-12-16 18:02:11,218 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 [2023-12-16 18:02:11,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:11,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1505175148, now seen corresponding path program 1 times [2023-12-16 18:02:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:11,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171652967] [2023-12-16 18:02:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:11,220 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 [2023-12-16 18:02:11,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:11,221 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) [2023-12-16 18:02:11,223 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 [2023-12-16 18:02:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:11,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:11,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:11,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:11,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171652967] [2023-12-16 18:02:11,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171652967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:11,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:11,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781643939] [2023-12-16 18:02:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:11,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:11,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:11,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:11,296 INFO L87 Difference]: Start difference. First operand 446 states and 655 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:11,327 INFO L93 Difference]: Finished difference Result 1222 states and 1795 transitions. [2023-12-16 18:02:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:11,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-16 18:02:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:11,331 INFO L225 Difference]: With dead ends: 1222 [2023-12-16 18:02:11,331 INFO L226 Difference]: Without dead ends: 798 [2023-12-16 18:02:11,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:11,333 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 32 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:11,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 147 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2023-12-16 18:02:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 796. [2023-12-16 18:02:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 1.4377358490566037) internal successors, (1143), 795 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1143 transitions. [2023-12-16 18:02:11,364 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1143 transitions. Word has length 35 [2023-12-16 18:02:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:11,365 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1143 transitions. [2023-12-16 18:02:11,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1143 transitions. [2023-12-16 18:02:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 18:02:11,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:11,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:11,372 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 [2023-12-16 18:02:11,568 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 [2023-12-16 18:02:11,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:11,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:11,569 INFO L85 PathProgramCache]: Analyzing trace with hash -217205247, now seen corresponding path program 1 times [2023-12-16 18:02:11,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:11,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213747542] [2023-12-16 18:02:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:11,570 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 [2023-12-16 18:02:11,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:11,571 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) [2023-12-16 18:02:11,572 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 [2023-12-16 18:02:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:11,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:02:11,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:12,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:12,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:12,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213747542] [2023-12-16 18:02:12,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213747542] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:12,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:12,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:02:12,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099035380] [2023-12-16 18:02:12,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:12,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:12,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:12,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:12,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:12,465 INFO L87 Difference]: Start difference. First operand 796 states and 1143 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:13,671 INFO L93 Difference]: Finished difference Result 2514 states and 3588 transitions. [2023-12-16 18:02:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 18:02:13,672 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-16 18:02:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:13,679 INFO L225 Difference]: With dead ends: 2514 [2023-12-16 18:02:13,679 INFO L226 Difference]: Without dead ends: 1960 [2023-12-16 18:02:13,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-16 18:02:13,681 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 590 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:13,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 550 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:02:13,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2023-12-16 18:02:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1568. [2023-12-16 18:02:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4365028717294193) internal successors, (2251), 1567 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2251 transitions. [2023-12-16 18:02:13,739 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2251 transitions. Word has length 49 [2023-12-16 18:02:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:13,739 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2251 transitions. [2023-12-16 18:02:13,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2251 transitions. [2023-12-16 18:02:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 18:02:13,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:13,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:13,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:13,947 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 [2023-12-16 18:02:13,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:13,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash -842861311, now seen corresponding path program 1 times [2023-12-16 18:02:13,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:13,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651406786] [2023-12-16 18:02:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:13,948 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 [2023-12-16 18:02:13,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:13,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:13,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 18:02:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:14,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:14,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:14,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:14,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:14,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651406786] [2023-12-16 18:02:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651406786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:14,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710717899] [2023-12-16 18:02:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:14,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:14,028 INFO L87 Difference]: Start difference. First operand 1568 states and 2251 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:14,084 INFO L93 Difference]: Finished difference Result 2690 states and 3888 transitions. [2023-12-16 18:02:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:14,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-16 18:02:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:14,090 INFO L225 Difference]: With dead ends: 2690 [2023-12-16 18:02:14,090 INFO L226 Difference]: Without dead ends: 1144 [2023-12-16 18:02:14,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:14,093 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 31 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:14,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 140 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2023-12-16 18:02:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1137. [2023-12-16 18:02:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 1.4330985915492958) internal successors, (1628), 1136 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1628 transitions. [2023-12-16 18:02:14,134 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1628 transitions. Word has length 49 [2023-12-16 18:02:14,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:14,135 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1628 transitions. [2023-12-16 18:02:14,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:14,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1628 transitions. [2023-12-16 18:02:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 18:02:14,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:14,142 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:02:14,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:14,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:14,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:14,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:14,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1927076031, now seen corresponding path program 1 times [2023-12-16 18:02:14,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:14,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022714603] [2023-12-16 18:02:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:14,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:14,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:14,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:14,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 18:02:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:14,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:14,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:14,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:14,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:14,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022714603] [2023-12-16 18:02:14,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022714603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:14,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:14,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358626828] [2023-12-16 18:02:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:14,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:14,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:14,436 INFO L87 Difference]: Start difference. First operand 1137 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:14,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:14,461 INFO L93 Difference]: Finished difference Result 1693 states and 2428 transitions. [2023-12-16 18:02:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:14,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-16 18:02:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:14,464 INFO L225 Difference]: With dead ends: 1693 [2023-12-16 18:02:14,464 INFO L226 Difference]: Without dead ends: 587 [2023-12-16 18:02:14,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:14,465 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 27 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:14,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 125 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:14,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-12-16 18:02:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2023-12-16 18:02:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.4006849315068493) internal successors, (818), 584 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 818 transitions. [2023-12-16 18:02:14,486 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 818 transitions. Word has length 51 [2023-12-16 18:02:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:14,486 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 818 transitions. [2023-12-16 18:02:14,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 818 transitions. [2023-12-16 18:02:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 18:02:14,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:14,487 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:02:14,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:14,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:14,691 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:14,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 174207316, now seen corresponding path program 1 times [2023-12-16 18:02:14,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:14,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178937684] [2023-12-16 18:02:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:14,692 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 [2023-12-16 18:02:14,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:14,693 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:14,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 18:02:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:14,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:02:14,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:15,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:15,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:15,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178937684] [2023-12-16 18:02:15,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178937684] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:15,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:15,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:02:15,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672446668] [2023-12-16 18:02:15,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:15,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:15,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:15,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:15,512 INFO L87 Difference]: Start difference. First operand 585 states and 818 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:16,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:16,403 INFO L93 Difference]: Finished difference Result 2117 states and 2958 transitions. [2023-12-16 18:02:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 18:02:16,404 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 18:02:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:16,409 INFO L225 Difference]: With dead ends: 2117 [2023-12-16 18:02:16,409 INFO L226 Difference]: Without dead ends: 1563 [2023-12-16 18:02:16,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-16 18:02:16,413 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 487 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:16,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 574 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:02:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2023-12-16 18:02:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1209. [2023-12-16 18:02:16,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 1.3774834437086092) internal successors, (1664), 1208 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1664 transitions. [2023-12-16 18:02:16,466 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1664 transitions. Word has length 52 [2023-12-16 18:02:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:16,466 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1664 transitions. [2023-12-16 18:02:16,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1664 transitions. [2023-12-16 18:02:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:02:16,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:16,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:02:16,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:16,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:16,670 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:16,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1009209312, now seen corresponding path program 1 times [2023-12-16 18:02:16,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:16,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277504156] [2023-12-16 18:02:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:16,671 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 [2023-12-16 18:02:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:16,672 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:16,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 18:02:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:16,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:02:16,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:16,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:16,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:16,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277504156] [2023-12-16 18:02:16,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277504156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:16,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:16,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:02:16,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937106299] [2023-12-16 18:02:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:16,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:02:16,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:02:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:16,747 INFO L87 Difference]: Start difference. First operand 1209 states and 1664 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:16,773 INFO L93 Difference]: Finished difference Result 1749 states and 2405 transitions. [2023-12-16 18:02:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:02:16,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-16 18:02:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:16,775 INFO L225 Difference]: With dead ends: 1749 [2023-12-16 18:02:16,776 INFO L226 Difference]: Without dead ends: 571 [2023-12-16 18:02:16,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:02:16,778 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:16,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 110 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:16,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-12-16 18:02:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 569. [2023-12-16 18:02:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.3380281690140845) internal successors, (760), 568 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 760 transitions. [2023-12-16 18:02:16,797 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 760 transitions. Word has length 54 [2023-12-16 18:02:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:16,797 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 760 transitions. [2023-12-16 18:02:16,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 760 transitions. [2023-12-16 18:02:16,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 18:02:16,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:16,798 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:02:16,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:17,001 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:17,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash -547962027, now seen corresponding path program 1 times [2023-12-16 18:02:17,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:17,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209605043] [2023-12-16 18:02:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:17,002 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 [2023-12-16 18:02:17,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:17,003 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:17,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 18:02:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:17,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:02:17,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:17,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:17,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:17,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209605043] [2023-12-16 18:02:17,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209605043] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:17,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:17,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 18:02:17,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93232755] [2023-12-16 18:02:17,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:17,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:02:17,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:02:17,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:02:17,771 INFO L87 Difference]: Start difference. First operand 569 states and 760 transitions. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:18,520 INFO L93 Difference]: Finished difference Result 1607 states and 2139 transitions. [2023-12-16 18:02:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 18:02:18,521 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-16 18:02:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:18,524 INFO L225 Difference]: With dead ends: 1607 [2023-12-16 18:02:18,525 INFO L226 Difference]: Without dead ends: 1069 [2023-12-16 18:02:18,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-16 18:02:18,526 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 436 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:18,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 441 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:02:18,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-12-16 18:02:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 951. [2023-12-16 18:02:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 1.3147368421052632) internal successors, (1249), 950 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1249 transitions. [2023-12-16 18:02:18,568 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1249 transitions. Word has length 55 [2023-12-16 18:02:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:18,569 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1249 transitions. [2023-12-16 18:02:18,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1249 transitions. [2023-12-16 18:02:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 18:02:18,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:18,569 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:02:18,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-16 18:02:18,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:18,772 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:18,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash 143425325, now seen corresponding path program 1 times [2023-12-16 18:02:18,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:18,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192138117] [2023-12-16 18:02:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:18,773 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 [2023-12-16 18:02:18,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:18,774 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:18,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 18:02:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:18,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 18:02:18,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:02:18,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:02:18,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:18,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192138117] [2023-12-16 18:02:18,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192138117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:18,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:18,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 18:02:18,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214056412] [2023-12-16 18:02:18,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:18,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:02:18,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:02:18,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:02:18,950 INFO L87 Difference]: Start difference. First operand 951 states and 1249 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:19,044 INFO L93 Difference]: Finished difference Result 2771 states and 3587 transitions. [2023-12-16 18:02:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:02:19,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-16 18:02:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:19,051 INFO L225 Difference]: With dead ends: 2771 [2023-12-16 18:02:19,051 INFO L226 Difference]: Without dead ends: 1851 [2023-12-16 18:02:19,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:02:19,053 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 42 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:19,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 234 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2023-12-16 18:02:19,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1755. [2023-12-16 18:02:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 1.2360319270239453) internal successors, (2168), 1754 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2168 transitions. [2023-12-16 18:02:19,147 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2168 transitions. Word has length 57 [2023-12-16 18:02:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:19,147 INFO L495 AbstractCegarLoop]: Abstraction has 1755 states and 2168 transitions. [2023-12-16 18:02:19,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2168 transitions. [2023-12-16 18:02:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-16 18:02:19,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:19,152 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 18:02:19,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:19,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:19,355 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:19,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:19,356 INFO L85 PathProgramCache]: Analyzing trace with hash -187964122, now seen corresponding path program 1 times [2023-12-16 18:02:19,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:19,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464531640] [2023-12-16 18:02:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:19,356 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 [2023-12-16 18:02:19,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:19,358 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:19,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-16 18:02:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:19,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:02:19,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:20,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:20,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:20,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464531640] [2023-12-16 18:02:20,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464531640] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:20,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:20,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 18:02:20,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872777194] [2023-12-16 18:02:20,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:20,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:20,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:20,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:20,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:20,689 INFO L87 Difference]: Start difference. First operand 1755 states and 2168 transitions. Second operand has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 25 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:21,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:21,903 INFO L93 Difference]: Finished difference Result 2875 states and 3588 transitions. [2023-12-16 18:02:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 18:02:21,905 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 25 states have internal predecessors, (164), 0 states have call successors, (0), 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 90 [2023-12-16 18:02:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:21,910 INFO L225 Difference]: With dead ends: 2875 [2023-12-16 18:02:21,910 INFO L226 Difference]: Without dead ends: 1789 [2023-12-16 18:02:21,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=358, Invalid=1364, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 18:02:21,912 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 645 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:21,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 532 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:02:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-12-16 18:02:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1755. [2023-12-16 18:02:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 1.217787913340935) internal successors, (2136), 1754 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2136 transitions. [2023-12-16 18:02:21,996 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2136 transitions. Word has length 90 [2023-12-16 18:02:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:21,996 INFO L495 AbstractCegarLoop]: Abstraction has 1755 states and 2136 transitions. [2023-12-16 18:02:21,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 25 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2136 transitions. [2023-12-16 18:02:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 18:02:21,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:21,998 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 18:02:22,004 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 (17)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:22,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:22,200 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:22,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:22,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1686625031, now seen corresponding path program 1 times [2023-12-16 18:02:22,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:22,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361549071] [2023-12-16 18:02:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:22,201 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 [2023-12-16 18:02:22,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:22,202 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:22,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 18:02:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:22,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:02:22,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 30 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:23,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 30 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:23,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361549071] [2023-12-16 18:02:23,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361549071] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:23,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:23,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:02:23,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629873899] [2023-12-16 18:02:23,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:23,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:23,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:23,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:23,618 INFO L87 Difference]: Start difference. First operand 1755 states and 2136 transitions. Second operand has 26 states, 26 states have (on average 6.423076923076923) internal successors, (167), 26 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:27,660 INFO L93 Difference]: Finished difference Result 2958 states and 3598 transitions. [2023-12-16 18:02:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-16 18:02:27,661 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.423076923076923) internal successors, (167), 26 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-16 18:02:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:27,668 INFO L225 Difference]: With dead ends: 2958 [2023-12-16 18:02:27,669 INFO L226 Difference]: Without dead ends: 2608 [2023-12-16 18:02:27,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-16 18:02:27,672 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 794 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:27,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1492 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 18:02:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2023-12-16 18:02:27,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 1207. [2023-12-16 18:02:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 1.2230514096185738) internal successors, (1475), 1206 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1475 transitions. [2023-12-16 18:02:27,743 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1475 transitions. Word has length 91 [2023-12-16 18:02:27,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:27,743 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1475 transitions. [2023-12-16 18:02:27,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.423076923076923) internal successors, (167), 26 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1475 transitions. [2023-12-16 18:02:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 18:02:27,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:27,744 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 18:02:27,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:27,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:27,945 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:27,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:27,945 INFO L85 PathProgramCache]: Analyzing trace with hash 362660805, now seen corresponding path program 1 times [2023-12-16 18:02:27,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:27,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895552258] [2023-12-16 18:02:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:27,946 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 [2023-12-16 18:02:27,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:27,947 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:27,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 18:02:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:28,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:02:28,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:28,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:29,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:29,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895552258] [2023-12-16 18:02:29,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895552258] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:29,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:29,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 18:02:29,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894015660] [2023-12-16 18:02:29,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:29,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:29,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:29,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:29,121 INFO L87 Difference]: Start difference. First operand 1207 states and 1475 transitions. Second operand has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 25 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:30,298 INFO L93 Difference]: Finished difference Result 1815 states and 2238 transitions. [2023-12-16 18:02:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 18:02:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 25 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-16 18:02:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:30,302 INFO L225 Difference]: With dead ends: 1815 [2023-12-16 18:02:30,302 INFO L226 Difference]: Without dead ends: 1293 [2023-12-16 18:02:30,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=392, Invalid=1500, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 18:02:30,304 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 571 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:30,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 498 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:02:30,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2023-12-16 18:02:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1207. [2023-12-16 18:02:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 1.214759535655058) internal successors, (1465), 1206 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1465 transitions. [2023-12-16 18:02:30,386 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1465 transitions. Word has length 91 [2023-12-16 18:02:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:30,387 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1465 transitions. [2023-12-16 18:02:30,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 25 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1465 transitions. [2023-12-16 18:02:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 18:02:30,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:30,388 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 18:02:30,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:30,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:30,591 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:30,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1672655722, now seen corresponding path program 1 times [2023-12-16 18:02:30,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:30,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593759007] [2023-12-16 18:02:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:30,592 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 [2023-12-16 18:02:30,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:30,593 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:30,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 18:02:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:30,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:02:30,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:31,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:32,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:32,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593759007] [2023-12-16 18:02:32,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593759007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:32,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:32,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:02:32,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011649725] [2023-12-16 18:02:32,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:32,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:32,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:32,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:32,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:32,037 INFO L87 Difference]: Start difference. First operand 1207 states and 1465 transitions. Second operand has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:35,813 INFO L93 Difference]: Finished difference Result 2289 states and 2783 transitions. [2023-12-16 18:02:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-16 18:02:35,814 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-16 18:02:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:35,818 INFO L225 Difference]: With dead ends: 2289 [2023-12-16 18:02:35,818 INFO L226 Difference]: Without dead ends: 1587 [2023-12-16 18:02:35,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-16 18:02:35,820 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 523 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:35,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1701 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 18:02:35,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2023-12-16 18:02:35,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1350. [2023-12-16 18:02:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 1.2053372868791699) internal successors, (1626), 1349 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1626 transitions. [2023-12-16 18:02:35,914 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1626 transitions. Word has length 92 [2023-12-16 18:02:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:35,914 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 1626 transitions. [2023-12-16 18:02:35,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1626 transitions. [2023-12-16 18:02:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 18:02:35,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:35,916 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 18:02:35,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:36,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:36,119 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:36,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1317950150, now seen corresponding path program 1 times [2023-12-16 18:02:36,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:36,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714966794] [2023-12-16 18:02:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:36,120 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 [2023-12-16 18:02:36,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:36,121 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:36,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 18:02:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:36,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 18:02:36,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:37,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:37,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:37,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714966794] [2023-12-16 18:02:37,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714966794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:37,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:37,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 18:02:37,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216285034] [2023-12-16 18:02:37,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:37,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:02:37,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:37,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:02:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:02:37,430 INFO L87 Difference]: Start difference. First operand 1350 states and 1626 transitions. Second operand has 26 states, 26 states have (on average 6.653846153846154) internal successors, (173), 26 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:41,189 INFO L93 Difference]: Finished difference Result 3557 states and 4262 transitions. [2023-12-16 18:02:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-16 18:02:41,189 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.653846153846154) internal successors, (173), 26 states have internal predecessors, (173), 0 states have call successors, (0), 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 92 [2023-12-16 18:02:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:41,195 INFO L225 Difference]: With dead ends: 3557 [2023-12-16 18:02:41,195 INFO L226 Difference]: Without dead ends: 3204 [2023-12-16 18:02:41,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-16 18:02:41,197 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 587 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:41,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1572 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 18:02:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2023-12-16 18:02:41,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 2578. [2023-12-16 18:02:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2578 states, 2577 states have (on average 1.194024058983314) internal successors, (3077), 2577 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3077 transitions. [2023-12-16 18:02:41,355 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3077 transitions. Word has length 92 [2023-12-16 18:02:41,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:41,355 INFO L495 AbstractCegarLoop]: Abstraction has 2578 states and 3077 transitions. [2023-12-16 18:02:41,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.653846153846154) internal successors, (173), 26 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3077 transitions. [2023-12-16 18:02:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 18:02:41,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:41,359 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 18:02:41,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:41,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:41,561 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:41,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1282993781, now seen corresponding path program 1 times [2023-12-16 18:02:41,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:41,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381513500] [2023-12-16 18:02:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:41,562 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 [2023-12-16 18:02:41,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:41,563 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:41,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-16 18:02:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:41,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:02:41,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-16 18:02:41,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:41,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:41,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381513500] [2023-12-16 18:02:41,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381513500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:41,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:41,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:02:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858546187] [2023-12-16 18:02:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:41,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:02:41,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:02:41,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:41,988 INFO L87 Difference]: Start difference. First operand 2578 states and 3077 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:42,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:42,155 INFO L93 Difference]: Finished difference Result 3467 states and 4192 transitions. [2023-12-16 18:02:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:02:42,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-16 18:02:42,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:42,162 INFO L225 Difference]: With dead ends: 3467 [2023-12-16 18:02:42,162 INFO L226 Difference]: Without dead ends: 3126 [2023-12-16 18:02:42,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:42,163 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 86 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:42,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 218 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2023-12-16 18:02:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3058. [2023-12-16 18:02:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 3057 states have (on average 1.1884200196270853) internal successors, (3633), 3057 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:42,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 3633 transitions. [2023-12-16 18:02:42,345 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 3633 transitions. Word has length 129 [2023-12-16 18:02:42,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:42,346 INFO L495 AbstractCegarLoop]: Abstraction has 3058 states and 3633 transitions. [2023-12-16 18:02:42,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 3633 transitions. [2023-12-16 18:02:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 18:02:42,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:42,349 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 18:02:42,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:42,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:42,553 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:42,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -857593867, now seen corresponding path program 2 times [2023-12-16 18:02:42,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:42,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67065057] [2023-12-16 18:02:42,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 18:02:42,554 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 [2023-12-16 18:02:42,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:42,555 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:42,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 18:02:42,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 18:02:42,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 18:02:42,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:02:42,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-16 18:02:42,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:42,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:42,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67065057] [2023-12-16 18:02:42,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67065057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:42,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:42,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:02:42,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690877530] [2023-12-16 18:02:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:42,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:02:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:42,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:02:42,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:42,940 INFO L87 Difference]: Start difference. First operand 3058 states and 3633 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:43,113 INFO L93 Difference]: Finished difference Result 3690 states and 4451 transitions. [2023-12-16 18:02:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:02:43,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2023-12-16 18:02:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:43,122 INFO L225 Difference]: With dead ends: 3690 [2023-12-16 18:02:43,123 INFO L226 Difference]: Without dead ends: 2882 [2023-12-16 18:02:43,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:43,124 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 90 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:43,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 234 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:02:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2023-12-16 18:02:43,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2746. [2023-12-16 18:02:43,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2746 states, 2745 states have (on average 1.174863387978142) internal successors, (3225), 2745 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:43,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 3225 transitions. [2023-12-16 18:02:43,280 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 3225 transitions. Word has length 129 [2023-12-16 18:02:43,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:43,281 INFO L495 AbstractCegarLoop]: Abstraction has 2746 states and 3225 transitions. [2023-12-16 18:02:43,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:43,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 3225 transitions. [2023-12-16 18:02:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 18:02:43,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:43,284 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 18:02:43,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:43,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:43,487 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:43,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash -502888295, now seen corresponding path program 2 times [2023-12-16 18:02:43,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:43,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177699430] [2023-12-16 18:02:43,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 18:02:43,488 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 [2023-12-16 18:02:43,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:43,489 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:43,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-16 18:02:43,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 18:02:43,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 18:02:43,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:02:43,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-16 18:02:43,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:02:43,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:43,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177699430] [2023-12-16 18:02:43,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177699430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:02:43,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:02:43,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:02:43,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592903680] [2023-12-16 18:02:43,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:02:43,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:02:43,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:43,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:02:43,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:43,872 INFO L87 Difference]: Start difference. First operand 2746 states and 3225 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:44,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:02:44,040 INFO L93 Difference]: Finished difference Result 3315 states and 3961 transitions. [2023-12-16 18:02:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:02:44,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-16 18:02:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:02:44,046 INFO L225 Difference]: With dead ends: 3315 [2023-12-16 18:02:44,046 INFO L226 Difference]: Without dead ends: 2986 [2023-12-16 18:02:44,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:02:44,047 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 91 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:02:44,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 223 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:02:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2023-12-16 18:02:44,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2918. [2023-12-16 18:02:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2917 states have (on average 1.1710661638669866) internal successors, (3416), 2917 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 3416 transitions. [2023-12-16 18:02:44,193 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 3416 transitions. Word has length 129 [2023-12-16 18:02:44,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:02:44,193 INFO L495 AbstractCegarLoop]: Abstraction has 2918 states and 3416 transitions. [2023-12-16 18:02:44,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:02:44,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 3416 transitions. [2023-12-16 18:02:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 18:02:44,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:02:44,197 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 18:02:44,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-16 18:02:44,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:44,399 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:02:44,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:02:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1778535200, now seen corresponding path program 1 times [2023-12-16 18:02:44,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:02:44,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389682298] [2023-12-16 18:02:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:02:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:02:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:02:44,401 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:02:44,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-16 18:02:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:02:44,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-16 18:02:44,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:02:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 130 proven. 50 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-16 18:02:46,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:02:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 61 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:02:47,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:02:47,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389682298] [2023-12-16 18:02:47,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389682298] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:02:47,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:02:47,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2023-12-16 18:02:47,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216997379] [2023-12-16 18:02:47,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:02:47,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-16 18:02:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:02:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-16 18:02:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 18:02:47,951 INFO L87 Difference]: Start difference. First operand 2918 states and 3416 transitions. Second operand has 39 states, 39 states have (on average 5.769230769230769) internal successors, (225), 39 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 18:03:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-12-16 18:03:15,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6167 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=3207, Invalid=16253, Unknown=0, NotChecked=0, Total=19460 [2023-12-16 18:03:15,342 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 1255 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:03:15,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1111 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-16 18:03:15,343 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 18:03:15,344 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 [2023-12-16 18:03:15,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-16 18:03:15,348 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 (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 18:03:15,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:03:15,546 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2918states) and FLOYD_HOARE automaton (currently 109 states, 39 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-11-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-9-3-1 context. [2023-12-16 18:03:15,550 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:03:15,552 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:03:15,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:03:15 BoogieIcfgContainer [2023-12-16 18:03:15,558 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:03:15,559 INFO L158 Benchmark]: Toolchain (without parser) took 68344.88ms. Allocated memory was 192.9MB in the beginning and 553.6MB in the end (delta: 360.7MB). Free memory was 144.1MB in the beginning and 257.1MB in the end (delta: -112.9MB). Peak memory consumption was 248.4MB. Max. memory is 8.0GB. [2023-12-16 18:03:15,561 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 192.9MB. Free memory was 147.1MB in the beginning and 147.0MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:03:15,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.06ms. Allocated memory is still 192.9MB. Free memory was 144.1MB in the beginning and 129.8MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 18:03:15,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.93ms. Allocated memory is still 192.9MB. Free memory was 129.8MB in the beginning and 127.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 18:03:15,562 INFO L158 Benchmark]: Boogie Preprocessor took 60.76ms. Allocated memory is still 192.9MB. Free memory was 127.7MB in the beginning and 125.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 18:03:15,562 INFO L158 Benchmark]: RCFGBuilder took 549.73ms. Allocated memory is still 192.9MB. Free memory was 125.3MB in the beginning and 159.7MB in the end (delta: -34.4MB). Peak memory consumption was 23.9MB. Max. memory is 8.0GB. [2023-12-16 18:03:15,564 INFO L158 Benchmark]: TraceAbstraction took 67379.14ms. Allocated memory was 192.9MB in the beginning and 553.6MB in the end (delta: 360.7MB). Free memory was 159.2MB in the beginning and 257.6MB in the end (delta: -98.4MB). Peak memory consumption was 262.3MB. Max. memory is 8.0GB. [2023-12-16 18:03:15,569 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 192.9MB. Free memory was 147.1MB in the beginning and 147.0MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.06ms. Allocated memory is still 192.9MB. Free memory was 144.1MB in the beginning and 129.8MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.93ms. Allocated memory is still 192.9MB. Free memory was 129.8MB in the beginning and 127.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.76ms. Allocated memory is still 192.9MB. Free memory was 127.7MB in the beginning and 125.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 549.73ms. Allocated memory is still 192.9MB. Free memory was 125.3MB in the beginning and 159.7MB in the end (delta: -34.4MB). Peak memory consumption was 23.9MB. Max. memory is 8.0GB. * TraceAbstraction took 67379.14ms. Allocated memory was 192.9MB in the beginning and 553.6MB in the end (delta: 360.7MB). Free memory was 159.2MB in the beginning and 257.6MB in the end (delta: -98.4MB). Peak memory consumption was 262.3MB. 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: 284]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 284). Cancelled while NwaCegarLoop was constructing difference of abstraction (2918states) and FLOYD_HOARE automaton (currently 109 states, 39 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-11-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-9-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.3s, OverallIterations: 24, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 45.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6532 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6532 mSDsluCounter, 11016 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8997 mSDsCounter, 262 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9601 IncrementalHoareTripleChecker+Invalid, 9863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 262 mSolverCounterUnsat, 2019 mSDtfsCounter, 9601 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2654 GetRequests, 2113 SyntacticMatches, 1 SemanticMatches, 539 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10574 ImplicationChecksByTransitivity, 38.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3058occurred in iteration=21, InterpolantAutomatonStates: 302, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 3672 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 1575 NumberOfCodeBlocks, 1399 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2340 ConstructedInterpolants, 527 QuantifiedInterpolants, 27500 SizeOfPredicates, 92 NumberOfNonLiveVariables, 3098 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 34 InterpolantComputations, 14 PerfectInterpolantSequences, 1193/2005 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