/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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 23:41:16,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 23:41:16,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 23:41:16,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 23:41:16,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 23:41:16,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 23:41:16,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 23:41:16,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 23:41:16,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 23:41:16,989 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 23:41:16,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 23:41:16,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 23:41:16,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 23:41:16,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 23:41:16,991 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 23:41:16,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 23:41:16,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 23:41:16,992 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 23:41:16,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 23:41:16,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 23:41:16,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 23:41:16,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 23:41:16,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 23:41:16,994 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 23:41:16,995 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 23:41:16,995 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 23:41:16,995 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 23:41:16,995 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 23:41:16,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 23:41:16,995 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 23:41:16,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 23:41:16,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 23:41:16,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 23:41:16,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 23:41:16,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:41:16,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 23:41:16,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 23:41:16,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 23:41:16,997 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 23:41:16,998 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 23:41:16,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 23:41:16,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 23:41:16,998 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 23:41:16,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 23:41:16,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 23:41:16,999 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 23:41:16,999 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 23:41:17,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 23:41:17,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 23:41:17,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 23:41:17,237 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 23:41:17,237 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 23:41:17,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c [2023-12-21 23:41:18,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 23:41:18,784 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 23:41:18,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c [2023-12-21 23:41:18,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0c43b20/2eb7010e8ce742b0bcc6ec6078b41743/FLAG1ca4b6d81 [2023-12-21 23:41:18,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b0c43b20/2eb7010e8ce742b0bcc6ec6078b41743 [2023-12-21 23:41:18,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 23:41:18,838 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 23:41:18,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 23:41:18,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 23:41:18,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 23:41:18,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:41:18" (1/1) ... [2023-12-21 23:41:18,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f3eb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:18, skipping insertion in model container [2023-12-21 23:41:18,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:41:18" (1/1) ... [2023-12-21 23:41:18,954 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 23:41:19,291 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c[6354,6367] [2023-12-21 23:41:19,324 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c[8229,8242] [2023-12-21 23:41:20,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:41:20,078 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 23:41:20,116 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c[6354,6367] [2023-12-21 23:41:20,124 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c[8229,8242] [2023-12-21 23:41:20,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:41:20,646 INFO L206 MainTranslator]: Completed translation [2023-12-21 23:41:20,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20 WrapperNode [2023-12-21 23:41:20,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 23:41:20,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 23:41:20,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 23:41:20,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 23:41:20,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:20,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:20,881 INFO L138 Inliner]: procedures = 34, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4961 [2023-12-21 23:41:20,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 23:41:20,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 23:41:20,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 23:41:20,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 23:41:20,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:20,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:20,940 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:21,029 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]. [2023-12-21 23:41:21,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:21,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:21,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:21,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:21,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:21,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:21,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 23:41:21,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 23:41:21,195 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 23:41:21,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 23:41:21,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (1/1) ... [2023-12-21 23:41:21,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:41:21,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 23:41:21,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 23:41:21,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 23:41:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 23:41:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 23:41:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 23:41:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 23:41:21,332 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 23:41:21,334 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 23:41:47,499 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 23:41:47,556 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 23:41:47,557 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 23:41:47,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:41:47 BoogieIcfgContainer [2023-12-21 23:41:47,557 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 23:41:47,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 23:41:47,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 23:41:47,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 23:41:47,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:41:18" (1/3) ... [2023-12-21 23:41:47,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714f3bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:41:47, skipping insertion in model container [2023-12-21 23:41:47,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:20" (2/3) ... [2023-12-21 23:41:47,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714f3bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:41:47, skipping insertion in model container [2023-12-21 23:41:47,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:41:47" (3/3) ... [2023-12-21 23:41:47,565 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label00.c [2023-12-21 23:41:47,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 23:41:47,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 23:41:47,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 23:41:47,651 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;@54a42db7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 23:41:47,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 23:41:47,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:41:47,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 23:41:47,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:41:47,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:41:47,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:41:47,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:41:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash 377176102, now seen corresponding path program 1 times [2023-12-21 23:41:47,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:41:47,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303690285] [2023-12-21 23:41:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:41:47,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:41:47,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:41:47,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:41:47,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 23:41:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:41:47,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 23:41:47,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:41:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:41:47,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:41:47,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:41:47,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303690285] [2023-12-21 23:41:47,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303690285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:41:47,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:41:47,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:41:47,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966574844] [2023-12-21 23:41:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:41:47,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 23:41:47,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:41:47,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 23:41:47,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 23:41:47,831 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:41:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:41:47,968 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-21 23:41:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 23:41:47,973 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-21 23:41:47,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:41:47,989 INFO L225 Difference]: With dead ends: 1594 [2023-12-21 23:41:47,989 INFO L226 Difference]: Without dead ends: 803 [2023-12-21 23:41:48,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 23:41:48,004 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:41:48,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:41:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-21 23:41:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-21 23:41:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:41:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-21 23:41:48,109 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 15 [2023-12-21 23:41:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:41:48,109 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-21 23:41:48,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:41:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-21 23:41:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 23:41:48,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:41:48,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:41:48,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 23:41:48,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:41:48,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:41:48,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:41:48,315 INFO L85 PathProgramCache]: Analyzing trace with hash -944554993, now seen corresponding path program 1 times [2023-12-21 23:41:48,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:41:48,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038703757] [2023-12-21 23:41:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:41:48,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:41:48,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:41:48,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:41:48,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 23:41:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:41:48,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:41:48,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:41:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:41:48,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:41:48,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:41:48,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038703757] [2023-12-21 23:41:48,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038703757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:41:48,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:41:48,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:41:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608863509] [2023-12-21 23:41:48,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:41:48,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:41:48,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:41:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:41:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:41:48,428 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:25,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:25,086 INFO L93 Difference]: Finished difference Result 2307 states and 4394 transitions. [2023-12-21 23:42:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:25,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-21 23:42:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:25,095 INFO L225 Difference]: With dead ends: 2307 [2023-12-21 23:42:25,095 INFO L226 Difference]: Without dead ends: 1554 [2023-12-21 23:42:25,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:25,098 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 863 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:25,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 626 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 36.4s Time] [2023-12-21 23:42:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2023-12-21 23:42:25,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2023-12-21 23:42:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1552 states have (on average 1.5644329896907216) internal successors, (2428), 1553 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2428 transitions. [2023-12-21 23:42:25,142 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2428 transitions. Word has length 15 [2023-12-21 23:42:25,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:25,143 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 2428 transitions. [2023-12-21 23:42:25,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:25,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2428 transitions. [2023-12-21 23:42:25,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 23:42:25,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:25,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:25,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:25,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:25,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:25,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:25,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1254633867, now seen corresponding path program 1 times [2023-12-21 23:42:25,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:25,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727296957] [2023-12-21 23:42:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:25,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:25,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:25,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:25,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 23:42:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:25,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:42:25,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:25,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:25,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727296957] [2023-12-21 23:42:25,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727296957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:25,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:25,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:42:25,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341975567] [2023-12-21 23:42:25,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:25,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:42:25,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:42:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:42:25,464 INFO L87 Difference]: Start difference. First operand 1554 states and 2428 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:25,549 INFO L93 Difference]: Finished difference Result 1615 states and 2523 transitions. [2023-12-21 23:42:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:42:25,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-21 23:42:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:25,556 INFO L225 Difference]: With dead ends: 1615 [2023-12-21 23:42:25,556 INFO L226 Difference]: Without dead ends: 1583 [2023-12-21 23:42:25,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:42:25,560 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:25,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:42:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2023-12-21 23:42:25,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1554. [2023-12-21 23:42:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1552 states have (on average 1.5541237113402062) internal successors, (2412), 1553 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2412 transitions. [2023-12-21 23:42:25,598 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2412 transitions. Word has length 17 [2023-12-21 23:42:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:25,599 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 2412 transitions. [2023-12-21 23:42:25,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2412 transitions. [2023-12-21 23:42:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 23:42:25,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:25,604 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] [2023-12-21 23:42:25,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-21 23:42:25,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:25,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:25,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1671742577, now seen corresponding path program 1 times [2023-12-21 23:42:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:25,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342575461] [2023-12-21 23:42:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:25,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:25,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:25,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:25,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 23:42:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:25,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:42:25,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:26,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:26,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342575461] [2023-12-21 23:42:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342575461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:26,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:26,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:42:26,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379925990] [2023-12-21 23:42:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:26,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:42:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:42:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:42:26,184 INFO L87 Difference]: Start difference. First operand 1554 states and 2412 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:26,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:26,336 INFO L93 Difference]: Finished difference Result 1670 states and 2596 transitions. [2023-12-21 23:42:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:42:26,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 23:42:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:26,344 INFO L225 Difference]: With dead ends: 1670 [2023-12-21 23:42:26,345 INFO L226 Difference]: Without dead ends: 1641 [2023-12-21 23:42:26,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:42:26,347 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4506 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4506 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:26,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4506 Valid, 1618 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:42:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-12-21 23:42:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1608. [2023-12-21 23:42:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1606 states have (on average 1.5560398505603985) internal successors, (2499), 1607 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2499 transitions. [2023-12-21 23:42:26,408 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2499 transitions. Word has length 32 [2023-12-21 23:42:26,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:26,408 INFO L495 AbstractCegarLoop]: Abstraction has 1608 states and 2499 transitions. [2023-12-21 23:42:26,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2499 transitions. [2023-12-21 23:42:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 23:42:26,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:26,411 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] [2023-12-21 23:42:26,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:26,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:26,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:26,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:26,617 INFO L85 PathProgramCache]: Analyzing trace with hash -349538145, now seen corresponding path program 1 times [2023-12-21 23:42:26,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:26,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729184540] [2023-12-21 23:42:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:26,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:26,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:26,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:26,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 23:42:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:26,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:26,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:26,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:26,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:26,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729184540] [2023-12-21 23:42:26,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729184540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:26,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:26,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:26,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916563817] [2023-12-21 23:42:26,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:26,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:26,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:26,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:26,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:26,746 INFO L87 Difference]: Start difference. First operand 1608 states and 2499 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2023-12-21 23:42:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:26,785 INFO L93 Difference]: Finished difference Result 1758 states and 2737 transitions. [2023-12-21 23:42:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 [2023-12-21 23:42:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:26,792 INFO L225 Difference]: With dead ends: 1758 [2023-12-21 23:42:26,792 INFO L226 Difference]: Without dead ends: 1675 [2023-12-21 23:42:26,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:26,793 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:26,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1541 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2023-12-21 23:42:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1673. [2023-12-21 23:42:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1671 states have (on average 1.55475763016158) internal successors, (2598), 1672 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2598 transitions. [2023-12-21 23:42:26,826 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2598 transitions. Word has length 34 [2023-12-21 23:42:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:26,827 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 2598 transitions. [2023-12-21 23:42:26,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2023-12-21 23:42:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2598 transitions. [2023-12-21 23:42:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 23:42:26,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:26,833 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] [2023-12-21 23:42:26,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:27,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:27,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:27,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1987358074, now seen corresponding path program 1 times [2023-12-21 23:42:27,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:27,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399388141] [2023-12-21 23:42:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:27,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:27,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:27,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:27,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 23:42:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:27,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 23:42:27,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:27,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:27,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:27,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399388141] [2023-12-21 23:42:27,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399388141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:27,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:27,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:42:27,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840248269] [2023-12-21 23:42:27,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:27,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:42:27,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:27,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:42:27,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:42:27,139 INFO L87 Difference]: Start difference. First operand 1673 states and 2598 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2023-12-21 23:42:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:27,200 INFO L93 Difference]: Finished difference Result 1687 states and 2615 transitions. [2023-12-21 23:42:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:42:27,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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 [2023-12-21 23:42:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:27,207 INFO L225 Difference]: With dead ends: 1687 [2023-12-21 23:42:27,207 INFO L226 Difference]: Without dead ends: 1685 [2023-12-21 23:42:27,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:42:27,211 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 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 [2023-12-21 23:42:27,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:27,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2023-12-21 23:42:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1681. [2023-12-21 23:42:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1679 states have (on average 1.5515187611673615) internal successors, (2605), 1680 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:27,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2605 transitions. [2023-12-21 23:42:27,246 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2605 transitions. Word has length 35 [2023-12-21 23:42:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:27,247 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2605 transitions. [2023-12-21 23:42:27,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2023-12-21 23:42:27,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2605 transitions. [2023-12-21 23:42:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:42:27,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:27,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:27,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-21 23:42:27,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:27,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:27,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:27,452 INFO L85 PathProgramCache]: Analyzing trace with hash 177157591, now seen corresponding path program 1 times [2023-12-21 23:42:27,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:27,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913945337] [2023-12-21 23:42:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:27,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:27,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:27,454 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:27,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 23:42:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:27,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:27,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:27,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:27,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:27,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913945337] [2023-12-21 23:42:27,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913945337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:27,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:27,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:27,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197894410] [2023-12-21 23:42:27,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:27,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:27,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:27,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:27,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:27,547 INFO L87 Difference]: Start difference. First operand 1681 states and 2605 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:27,579 INFO L93 Difference]: Finished difference Result 1849 states and 2865 transitions. [2023-12-21 23:42:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:27,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:42:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:27,585 INFO L225 Difference]: With dead ends: 1849 [2023-12-21 23:42:27,585 INFO L226 Difference]: Without dead ends: 1760 [2023-12-21 23:42:27,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:27,586 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:27,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-12-21 23:42:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1758. [2023-12-21 23:42:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.5495444191343963) internal successors, (2721), 1757 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2721 transitions. [2023-12-21 23:42:27,619 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2721 transitions. Word has length 36 [2023-12-21 23:42:27,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:27,620 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2721 transitions. [2023-12-21 23:42:27,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2721 transitions. [2023-12-21 23:42:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:42:27,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:27,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:27,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:27,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:27,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:27,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash -448498473, now seen corresponding path program 1 times [2023-12-21 23:42:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:27,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556334725] [2023-12-21 23:42:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:27,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:27,830 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:27,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 23:42:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:27,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:27,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:27,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:27,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556334725] [2023-12-21 23:42:27,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556334725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:27,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:27,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:27,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786466660] [2023-12-21 23:42:27,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:27,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:27,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:27,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:27,915 INFO L87 Difference]: Start difference. First operand 1758 states and 2721 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:27,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:27,957 INFO L93 Difference]: Finished difference Result 2184 states and 3364 transitions. [2023-12-21 23:42:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:27,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:42:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:27,964 INFO L225 Difference]: With dead ends: 2184 [2023-12-21 23:42:27,964 INFO L226 Difference]: Without dead ends: 1953 [2023-12-21 23:42:27,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:27,966 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:27,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2023-12-21 23:42:27,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1951. [2023-12-21 23:42:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1949 states have (on average 1.5397639815289892) internal successors, (3001), 1950 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3001 transitions. [2023-12-21 23:42:28,007 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3001 transitions. Word has length 36 [2023-12-21 23:42:28,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:28,007 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 3001 transitions. [2023-12-21 23:42:28,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:28,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3001 transitions. [2023-12-21 23:42:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:42:28,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:28,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:28,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:28,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:28,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:28,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash 440234967, now seen corresponding path program 1 times [2023-12-21 23:42:28,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:28,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702644261] [2023-12-21 23:42:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:28,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:28,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:28,214 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:28,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 23:42:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:28,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:28,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:28,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:28,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:28,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702644261] [2023-12-21 23:42:28,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702644261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:28,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:28,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:28,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394742638] [2023-12-21 23:42:28,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:28,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:28,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:28,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:28,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:28,343 INFO L87 Difference]: Start difference. First operand 1951 states and 3001 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:28,386 INFO L93 Difference]: Finished difference Result 2727 states and 4141 transitions. [2023-12-21 23:42:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:28,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:42:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:28,396 INFO L225 Difference]: With dead ends: 2727 [2023-12-21 23:42:28,396 INFO L226 Difference]: Without dead ends: 2303 [2023-12-21 23:42:28,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:28,399 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:28,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2023-12-21 23:42:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2301. [2023-12-21 23:42:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2299 states have (on average 1.517616354936929) internal successors, (3489), 2300 states have internal predecessors, (3489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3489 transitions. [2023-12-21 23:42:28,470 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3489 transitions. Word has length 36 [2023-12-21 23:42:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:28,470 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3489 transitions. [2023-12-21 23:42:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3489 transitions. [2023-12-21 23:42:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 23:42:28,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:28,472 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] [2023-12-21 23:42:28,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-21 23:42:28,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:28,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:28,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash -615837049, now seen corresponding path program 1 times [2023-12-21 23:42:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:28,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885467447] [2023-12-21 23:42:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:28,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:28,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:28,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:28,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 23:42:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:28,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:42:28,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:29,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:42:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:29,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:29,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885467447] [2023-12-21 23:42:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885467447] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:42:29,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:42:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:42:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475087340] [2023-12-21 23:42:29,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:42:29,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:42:29,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:29,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:42:29,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:42:29,892 INFO L87 Difference]: Start difference. First operand 2301 states and 3489 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:31,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:31,910 INFO L93 Difference]: Finished difference Result 4019 states and 5934 transitions. [2023-12-21 23:42:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:42:31,911 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 23:42:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:31,922 INFO L225 Difference]: With dead ends: 4019 [2023-12-21 23:42:31,922 INFO L226 Difference]: Without dead ends: 3465 [2023-12-21 23:42:31,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-21 23:42:31,924 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 4899 mSDsluCounter, 11977 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4899 SdHoareTripleChecker+Valid, 13477 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:31,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4899 Valid, 13477 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 23:42:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2023-12-21 23:42:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3073. [2023-12-21 23:42:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 3071 states have (on average 1.4969065450993162) internal successors, (4597), 3072 states have internal predecessors, (4597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 4597 transitions. [2023-12-21 23:42:32,044 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 4597 transitions. Word has length 50 [2023-12-21 23:42:32,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:32,044 INFO L495 AbstractCegarLoop]: Abstraction has 3073 states and 4597 transitions. [2023-12-21 23:42:32,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 4597 transitions. [2023-12-21 23:42:32,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 23:42:32,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:32,045 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] [2023-12-21 23:42:32,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:32,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:32,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:32,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:32,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1241493113, now seen corresponding path program 1 times [2023-12-21 23:42:32,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:32,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743001940] [2023-12-21 23:42:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:32,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:32,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:32,252 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:32,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 23:42:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:32,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:32,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:32,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:32,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743001940] [2023-12-21 23:42:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743001940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:32,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:32,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784697878] [2023-12-21 23:42:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:32,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:32,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:32,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:32,358 INFO L87 Difference]: Start difference. First operand 3073 states and 4597 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:32,407 INFO L93 Difference]: Finished difference Result 4195 states and 6234 transitions. [2023-12-21 23:42:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:32,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-21 23:42:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:32,416 INFO L225 Difference]: With dead ends: 4195 [2023-12-21 23:42:32,417 INFO L226 Difference]: Without dead ends: 2649 [2023-12-21 23:42:32,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:32,420 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 31 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:32,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:32,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-12-21 23:42:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2642. [2023-12-21 23:42:32,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2640 states have (on average 1.5053030303030304) internal successors, (3974), 2641 states have internal predecessors, (3974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:32,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3974 transitions. [2023-12-21 23:42:32,480 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3974 transitions. Word has length 50 [2023-12-21 23:42:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:32,481 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 3974 transitions. [2023-12-21 23:42:32,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3974 transitions. [2023-12-21 23:42:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 23:42:32,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:32,482 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, 1] [2023-12-21 23:42:32,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-21 23:42:32,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:32,686 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:32,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2123131417, now seen corresponding path program 1 times [2023-12-21 23:42:32,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:32,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113199609] [2023-12-21 23:42:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:32,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:32,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:32,688 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:32,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 23:42:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:32,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:32,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:32,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:32,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:32,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113199609] [2023-12-21 23:42:32,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113199609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:32,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:32,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488887276] [2023-12-21 23:42:32,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:32,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:32,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:32,794 INFO L87 Difference]: Start difference. First operand 2642 states and 3974 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:32,829 INFO L93 Difference]: Finished difference Result 3198 states and 4774 transitions. [2023-12-21 23:42:32,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:32,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 23:42:32,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:32,834 INFO L225 Difference]: With dead ends: 3198 [2023-12-21 23:42:32,834 INFO L226 Difference]: Without dead ends: 2092 [2023-12-21 23:42:32,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:32,836 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 27 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:32,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3002 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2023-12-21 23:42:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2090. [2023-12-21 23:42:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2088 states have (on average 1.5153256704980842) internal successors, (3164), 2089 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3164 transitions. [2023-12-21 23:42:32,887 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3164 transitions. Word has length 52 [2023-12-21 23:42:32,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:32,887 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 3164 transitions. [2023-12-21 23:42:32,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3164 transitions. [2023-12-21 23:42:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 23:42:32,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:32,888 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] [2023-12-21 23:42:32,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:33,092 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:33,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1722853301, now seen corresponding path program 1 times [2023-12-21 23:42:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:33,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838356618] [2023-12-21 23:42:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:33,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:33,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:33,094 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:33,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 23:42:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:33,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:42:33,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:33,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:42:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:34,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:34,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838356618] [2023-12-21 23:42:34,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838356618] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:42:34,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:42:34,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:42:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725372558] [2023-12-21 23:42:34,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:42:34,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:42:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:42:34,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:42:34,277 INFO L87 Difference]: Start difference. First operand 2090 states and 3164 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:35,700 INFO L93 Difference]: Finished difference Result 3622 states and 5304 transitions. [2023-12-21 23:42:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 23:42:35,700 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 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 53 [2023-12-21 23:42:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:35,709 INFO L225 Difference]: With dead ends: 3622 [2023-12-21 23:42:35,710 INFO L226 Difference]: Without dead ends: 3068 [2023-12-21 23:42:35,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-21 23:42:35,712 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 6259 mSDsluCounter, 13513 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6259 SdHoareTripleChecker+Valid, 15040 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:35,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6259 Valid, 15040 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 23:42:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2023-12-21 23:42:35,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 2714. [2023-12-21 23:42:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2712 states have (on average 1.4786135693215339) internal successors, (4010), 2713 states have internal predecessors, (4010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 4010 transitions. [2023-12-21 23:42:35,784 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 4010 transitions. Word has length 53 [2023-12-21 23:42:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:35,784 INFO L495 AbstractCegarLoop]: Abstraction has 2714 states and 4010 transitions. [2023-12-21 23:42:35,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 4010 transitions. [2023-12-21 23:42:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 23:42:35,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:35,785 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, 1] [2023-12-21 23:42:35,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:35,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:35,989 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:35,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1913655543, now seen corresponding path program 1 times [2023-12-21 23:42:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:35,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134193537] [2023-12-21 23:42:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:35,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:35,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:35,992 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:35,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 23:42:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:36,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:36,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:36,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:36,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134193537] [2023-12-21 23:42:36,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134193537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:36,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:36,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:36,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177020200] [2023-12-21 23:42:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:36,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:36,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:36,099 INFO L87 Difference]: Start difference. First operand 2714 states and 4010 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:36,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:36,134 INFO L93 Difference]: Finished difference Result 3254 states and 4751 transitions. [2023-12-21 23:42:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:42:36,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 23:42:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:36,139 INFO L225 Difference]: With dead ends: 3254 [2023-12-21 23:42:36,139 INFO L226 Difference]: Without dead ends: 2076 [2023-12-21 23:42:36,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:36,141 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 23 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:36,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2023-12-21 23:42:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2074. [2023-12-21 23:42:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2072 states have (on average 1.499034749034749) internal successors, (3106), 2073 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3106 transitions. [2023-12-21 23:42:36,184 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3106 transitions. Word has length 55 [2023-12-21 23:42:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:36,184 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 3106 transitions. [2023-12-21 23:42:36,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:36,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3106 transitions. [2023-12-21 23:42:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 23:42:36,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:36,185 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, 1] [2023-12-21 23:42:36,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:36,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:36,389 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:36,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash -247775685, now seen corresponding path program 1 times [2023-12-21 23:42:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:36,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066052019] [2023-12-21 23:42:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:36,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:36,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:36,391 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:36,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 23:42:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:36,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:42:36,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:37,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:42:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:37,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:37,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066052019] [2023-12-21 23:42:37,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066052019] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:42:37,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:42:37,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:42:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042212792] [2023-12-21 23:42:37,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:42:37,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:42:37,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:42:37,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:42:37,496 INFO L87 Difference]: Start difference. First operand 2074 states and 3106 transitions. Second operand has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 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) [2023-12-21 23:42:38,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:38,549 INFO L93 Difference]: Finished difference Result 3112 states and 4485 transitions. [2023-12-21 23:42:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 23:42:38,550 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 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 56 [2023-12-21 23:42:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:38,554 INFO L225 Difference]: With dead ends: 3112 [2023-12-21 23:42:38,554 INFO L226 Difference]: Without dead ends: 2574 [2023-12-21 23:42:38,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-21 23:42:38,556 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 3135 mSDsluCounter, 10474 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3135 SdHoareTripleChecker+Valid, 11983 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:38,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3135 Valid, 11983 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 23:42:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2023-12-21 23:42:38,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2456. [2023-12-21 23:42:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2454 states have (on average 1.4649551752241239) internal successors, (3595), 2455 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3595 transitions. [2023-12-21 23:42:38,613 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3595 transitions. Word has length 56 [2023-12-21 23:42:38,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:38,614 INFO L495 AbstractCegarLoop]: Abstraction has 2456 states and 3595 transitions. [2023-12-21 23:42:38,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 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) [2023-12-21 23:42:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3595 transitions. [2023-12-21 23:42:38,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 23:42:38,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:38,615 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, 1] [2023-12-21 23:42:38,624 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 [2023-12-21 23:42:38,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:38,818 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:38,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:38,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1496708147, now seen corresponding path program 1 times [2023-12-21 23:42:38,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:38,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586424269] [2023-12-21 23:42:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:38,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:38,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:38,820 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:38,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 23:42:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:38,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 23:42:38,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:42:38,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:42:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:42:39,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:39,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586424269] [2023-12-21 23:42:39,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586424269] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:42:39,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:42:39,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 23:42:39,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490433286] [2023-12-21 23:42:39,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:42:39,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 23:42:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 23:42:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:42:39,082 INFO L87 Difference]: Start difference. First operand 2456 states and 3595 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:42:39,200 INFO L93 Difference]: Finished difference Result 4276 states and 5933 transitions. [2023-12-21 23:42:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:42:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 23:42:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:42:39,206 INFO L225 Difference]: With dead ends: 4276 [2023-12-21 23:42:39,206 INFO L226 Difference]: Without dead ends: 3356 [2023-12-21 23:42:39,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:42:39,207 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 1502 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:42:39,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 3094 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:42:39,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2023-12-21 23:42:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3260. [2023-12-21 23:42:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3258 states have (on average 1.385512584407612) internal successors, (4514), 3259 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4514 transitions. [2023-12-21 23:42:39,282 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4514 transitions. Word has length 58 [2023-12-21 23:42:39,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:42:39,282 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4514 transitions. [2023-12-21 23:42:39,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:42:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4514 transitions. [2023-12-21 23:42:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 23:42:39,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:42:39,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:42:39,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 23:42:39,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:39,488 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:42:39,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:42:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1684099483, now seen corresponding path program 1 times [2023-12-21 23:42:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:42:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359092846] [2023-12-21 23:42:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:42:39,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:42:39,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:42:39,490 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:42:39,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 23:42:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:42:39,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:42:39,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:42:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:42:39,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:42:39,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:42:39,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359092846] [2023-12-21 23:42:39,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359092846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:42:39,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:42:39,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:42:39,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166383982] [2023-12-21 23:42:39,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:42:39,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:42:39,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:42:39,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:42:39,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:42:39,578 INFO L87 Difference]: Start difference. First operand 3260 states and 4514 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:15,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:15,299 INFO L93 Difference]: Finished difference Result 6266 states and 9201 transitions. [2023-12-21 23:43:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:15,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-21 23:43:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:15,306 INFO L225 Difference]: With dead ends: 6266 [2023-12-21 23:43:15,306 INFO L226 Difference]: Without dead ends: 4762 [2023-12-21 23:43:15,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:15,308 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 762 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:15,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1205 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 35.5s Time] [2023-12-21 23:43:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2023-12-21 23:43:15,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 4762. [2023-12-21 23:43:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 4760 states have (on average 1.384873949579832) internal successors, (6592), 4761 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 6592 transitions. [2023-12-21 23:43:15,400 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 6592 transitions. Word has length 86 [2023-12-21 23:43:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:15,401 INFO L495 AbstractCegarLoop]: Abstraction has 4762 states and 6592 transitions. [2023-12-21 23:43:15,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 6592 transitions. [2023-12-21 23:43:15,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 23:43:15,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:15,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:15,407 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 [2023-12-21 23:43:15,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:15,603 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:15,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:15,603 INFO L85 PathProgramCache]: Analyzing trace with hash 916031040, now seen corresponding path program 1 times [2023-12-21 23:43:15,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:15,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840179580] [2023-12-21 23:43:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:15,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:15,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:15,605 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:15,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 23:43:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:15,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:15,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:15,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:15,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:15,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840179580] [2023-12-21 23:43:15,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840179580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:15,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:15,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:43:15,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422147840] [2023-12-21 23:43:15,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:15,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:15,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:15,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:15,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:15,814 INFO L87 Difference]: Start difference. First operand 4762 states and 6592 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:54,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:54,667 INFO L93 Difference]: Finished difference Result 10772 states and 15435 transitions. [2023-12-21 23:43:54,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:54,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 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 88 [2023-12-21 23:43:54,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:54,681 INFO L225 Difference]: With dead ends: 10772 [2023-12-21 23:43:54,681 INFO L226 Difference]: Without dead ends: 7766 [2023-12-21 23:43:54,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:54,686 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 784 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:54,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 618 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 38.7s Time] [2023-12-21 23:43:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2023-12-21 23:43:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 7766. [2023-12-21 23:43:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7764 states have (on average 1.3124678001030397) internal successors, (10190), 7765 states have internal predecessors, (10190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 10190 transitions. [2023-12-21 23:43:54,852 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 10190 transitions. Word has length 88 [2023-12-21 23:43:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:54,852 INFO L495 AbstractCegarLoop]: Abstraction has 7766 states and 10190 transitions. [2023-12-21 23:43:54,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:54,852 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 10190 transitions. [2023-12-21 23:43:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 23:43:54,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:54,859 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, 1] [2023-12-21 23:43:54,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:55,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:55,065 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:55,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash -815188029, now seen corresponding path program 1 times [2023-12-21 23:43:55,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:55,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885443256] [2023-12-21 23:43:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:55,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:55,067 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:55,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 23:43:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:55,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:43:55,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:56,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:56,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:56,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885443256] [2023-12-21 23:43:56,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885443256] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:56,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:56,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:43:56,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279020889] [2023-12-21 23:43:56,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:56,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:43:56,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:43:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:43:56,941 INFO L87 Difference]: Start difference. First operand 7766 states and 10190 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:58,844 INFO L93 Difference]: Finished difference Result 8886 states and 11610 transitions. [2023-12-21 23:43:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 23:43:58,845 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 23:43:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:58,859 INFO L225 Difference]: With dead ends: 8886 [2023-12-21 23:43:58,859 INFO L226 Difference]: Without dead ends: 7800 [2023-12-21 23:43:58,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 23:43:58,864 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 17789 mSDsluCounter, 9085 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17789 SdHoareTripleChecker+Valid, 10578 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:58,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17789 Valid, 10578 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 23:43:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7800 states. [2023-12-21 23:43:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7800 to 7766. [2023-12-21 23:43:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7764 states have (on average 1.3083462132921175) internal successors, (10158), 7765 states have internal predecessors, (10158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 10158 transitions. [2023-12-21 23:43:59,053 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 10158 transitions. Word has length 91 [2023-12-21 23:43:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:59,053 INFO L495 AbstractCegarLoop]: Abstraction has 7766 states and 10158 transitions. [2023-12-21 23:43:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 10158 transitions. [2023-12-21 23:43:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 23:43:59,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:59,056 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, 1] [2023-12-21 23:43:59,062 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 [2023-12-21 23:43:59,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:59,260 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:59,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2015722075, now seen corresponding path program 1 times [2023-12-21 23:43:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:59,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967728712] [2023-12-21 23:43:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:59,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:59,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:59,263 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:59,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 23:43:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:59,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:43:59,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:00,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:44:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:01,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:01,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967728712] [2023-12-21 23:44:01,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967728712] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:44:01,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:44:01,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:44:01,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158283290] [2023-12-21 23:44:01,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:44:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:44:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:44:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:44:01,129 INFO L87 Difference]: Start difference. First operand 7766 states and 10158 transitions. Second operand has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:03,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:03,392 INFO L93 Difference]: Finished difference Result 8596 states and 11194 transitions. [2023-12-21 23:44:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:44:03,393 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 23:44:03,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:03,406 INFO L225 Difference]: With dead ends: 8596 [2023-12-21 23:44:03,406 INFO L226 Difference]: Without dead ends: 7902 [2023-12-21 23:44:03,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 23:44:03,411 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 17907 mSDsluCounter, 9180 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17907 SdHoareTripleChecker+Valid, 10673 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:03,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17907 Valid, 10673 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 23:44:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2023-12-21 23:44:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7766. [2023-12-21 23:44:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7764 states have (on average 1.3062854198866565) internal successors, (10142), 7765 states have internal predecessors, (10142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 10142 transitions. [2023-12-21 23:44:03,617 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 10142 transitions. Word has length 92 [2023-12-21 23:44:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:03,618 INFO L495 AbstractCegarLoop]: Abstraction has 7766 states and 10142 transitions. [2023-12-21 23:44:03,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:03,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 10142 transitions. [2023-12-21 23:44:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 23:44:03,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:03,622 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, 1] [2023-12-21 23:44:03,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:03,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:03,833 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:03,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:03,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1792575379, now seen corresponding path program 1 times [2023-12-21 23:44:03,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:03,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710046617] [2023-12-21 23:44:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:03,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:03,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:03,834 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:03,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 23:44:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:03,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:44:03,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:05,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:44:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:05,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:05,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710046617] [2023-12-21 23:44:05,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710046617] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:44:05,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:44:05,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:44:05,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402031298] [2023-12-21 23:44:05,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:44:05,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:44:05,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:05,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:44:05,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:44:05,986 INFO L87 Difference]: Start difference. First operand 7766 states and 10142 transitions. Second operand has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:11,454 INFO L93 Difference]: Finished difference Result 8932 states and 11556 transitions. [2023-12-21 23:44:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 23:44:11,455 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 23:44:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:11,465 INFO L225 Difference]: With dead ends: 8932 [2023-12-21 23:44:11,465 INFO L226 Difference]: Without dead ends: 8214 [2023-12-21 23:44:11,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 23:44:11,471 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 3537 mSDsluCounter, 21552 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3537 SdHoareTripleChecker+Valid, 23121 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:11,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3537 Valid, 23121 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 23:44:11,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8214 states. [2023-12-21 23:44:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8214 to 7156. [2023-12-21 23:44:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7156 states, 7154 states have (on average 1.314649147330165) internal successors, (9405), 7155 states have internal predecessors, (9405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 9405 transitions. [2023-12-21 23:44:11,653 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 9405 transitions. Word has length 93 [2023-12-21 23:44:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:11,653 INFO L495 AbstractCegarLoop]: Abstraction has 7156 states and 9405 transitions. [2023-12-21 23:44:11,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:11,653 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 9405 transitions. [2023-12-21 23:44:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 23:44:11,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:11,655 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, 1] [2023-12-21 23:44:11,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:11,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:11,859 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:11,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2147280951, now seen corresponding path program 1 times [2023-12-21 23:44:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:11,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392991461] [2023-12-21 23:44:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:11,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:11,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:11,861 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:11,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 23:44:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:11,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:44:11,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:13,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:44:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:13,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:13,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392991461] [2023-12-21 23:44:13,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392991461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:44:13,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:44:13,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:44:13,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106399452] [2023-12-21 23:44:13,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:44:13,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:44:13,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:13,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:44:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:44:13,613 INFO L87 Difference]: Start difference. First operand 7156 states and 9405 transitions. Second operand has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:18,969 INFO L93 Difference]: Finished difference Result 8051 states and 10488 transitions. [2023-12-21 23:44:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 23:44:18,971 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 23:44:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:18,978 INFO L225 Difference]: With dead ends: 8051 [2023-12-21 23:44:18,979 INFO L226 Difference]: Without dead ends: 7769 [2023-12-21 23:44:18,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 23:44:18,981 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 1914 mSDsluCounter, 20119 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 21697 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:18,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1914 Valid, 21697 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 23:44:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7769 states. [2023-12-21 23:44:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7769 to 7379. [2023-12-21 23:44:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7379 states, 7377 states have (on average 1.3106954046360308) internal successors, (9669), 7378 states have internal predecessors, (9669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 9669 transitions. [2023-12-21 23:44:19,095 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 9669 transitions. Word has length 93 [2023-12-21 23:44:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:19,096 INFO L495 AbstractCegarLoop]: Abstraction has 7379 states and 9669 transitions. [2023-12-21 23:44:19,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 9669 transitions. [2023-12-21 23:44:19,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 23:44:19,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:19,097 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, 1] [2023-12-21 23:44:19,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-21 23:44:19,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:19,297 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:19,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:19,298 INFO L85 PathProgramCache]: Analyzing trace with hash -361804269, now seen corresponding path program 1 times [2023-12-21 23:44:19,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:19,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404492602] [2023-12-21 23:44:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:19,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:19,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:19,300 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:19,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-21 23:44:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:19,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:44:19,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:20,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:44:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:21,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404492602] [2023-12-21 23:44:21,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404492602] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:44:21,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:44:21,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:44:21,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288831376] [2023-12-21 23:44:21,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:44:21,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:44:21,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:21,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:44:21,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:44:21,098 INFO L87 Difference]: Start difference. First operand 7379 states and 9669 transitions. Second operand has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 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) [2023-12-21 23:44:27,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:27,081 INFO L93 Difference]: Finished difference Result 9920 states and 12682 transitions. [2023-12-21 23:44:27,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 23:44:27,081 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 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 93 [2023-12-21 23:44:27,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:27,092 INFO L225 Difference]: With dead ends: 9920 [2023-12-21 23:44:27,092 INFO L226 Difference]: Without dead ends: 9537 [2023-12-21 23:44:27,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 23:44:27,097 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 3467 mSDsluCounter, 23392 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3467 SdHoareTripleChecker+Valid, 24986 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:27,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3467 Valid, 24986 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2063 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 23:44:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9537 states. [2023-12-21 23:44:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9537 to 8589. [2023-12-21 23:44:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8589 states, 8587 states have (on average 1.2925352276697333) internal successors, (11099), 8588 states have internal predecessors, (11099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8589 states to 8589 states and 11099 transitions. [2023-12-21 23:44:27,340 INFO L78 Accepts]: Start accepts. Automaton has 8589 states and 11099 transitions. Word has length 93 [2023-12-21 23:44:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:27,341 INFO L495 AbstractCegarLoop]: Abstraction has 8589 states and 11099 transitions. [2023-12-21 23:44:27,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 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) [2023-12-21 23:44:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8589 states and 11099 transitions. [2023-12-21 23:44:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 23:44:27,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:27,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:27,346 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 [2023-12-21 23:44:27,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:27,543 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:27,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1670729516, now seen corresponding path program 1 times [2023-12-21 23:44:27,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008834526] [2023-12-21 23:44:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:27,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:27,546 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:27,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-21 23:44:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:27,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:44:27,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:27,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:44:27,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:27,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008834526] [2023-12-21 23:44:27,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008834526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:44:27,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:44:27,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:44:27,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124709652] [2023-12-21 23:44:27,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:44:27,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:44:27,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:44:27,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:44:27,778 INFO L87 Difference]: Start difference. First operand 8589 states and 11099 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:45:02,628 INFO L93 Difference]: Finished difference Result 20609 states and 27139 transitions. [2023-12-21 23:45:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:45:02,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 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 96 [2023-12-21 23:45:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:45:02,645 INFO L225 Difference]: With dead ends: 20609 [2023-12-21 23:45:02,645 INFO L226 Difference]: Without dead ends: 14599 [2023-12-21 23:45:02,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:45:02,653 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 973 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2023-12-21 23:45:02,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 412 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 34.6s Time] [2023-12-21 23:45:02,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2023-12-21 23:45:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 13095. [2023-12-21 23:45:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13095 states, 13093 states have (on average 1.2620484228213549) internal successors, (16524), 13094 states have internal predecessors, (16524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13095 states to 13095 states and 16524 transitions. [2023-12-21 23:45:02,928 INFO L78 Accepts]: Start accepts. Automaton has 13095 states and 16524 transitions. Word has length 96 [2023-12-21 23:45:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:45:02,928 INFO L495 AbstractCegarLoop]: Abstraction has 13095 states and 16524 transitions. [2023-12-21 23:45:02,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:02,928 INFO L276 IsEmpty]: Start isEmpty. Operand 13095 states and 16524 transitions. [2023-12-21 23:45:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 23:45:02,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:45:02,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:45:02,936 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 [2023-12-21 23:45:03,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:45:03,131 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:45:03,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:45:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1466960969, now seen corresponding path program 1 times [2023-12-21 23:45:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:45:03,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062345788] [2023-12-21 23:45:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:45:03,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:45:03,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:45:03,133 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:45:03,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 23:45:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:45:03,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:45:03,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:45:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:45:03,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:45:03,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:45:03,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062345788] [2023-12-21 23:45:03,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062345788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:45:03,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:45:03,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:45:03,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604027199] [2023-12-21 23:45:03,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:45:03,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:45:03,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:45:03,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:45:03,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:45:03,297 INFO L87 Difference]: Start difference. First operand 13095 states and 16524 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:45:41,705 INFO L93 Difference]: Finished difference Result 28868 states and 36986 transitions. [2023-12-21 23:45:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:45:41,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-21 23:45:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:45:41,723 INFO L225 Difference]: With dead ends: 28868 [2023-12-21 23:45:41,724 INFO L226 Difference]: Without dead ends: 18352 [2023-12-21 23:45:41,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:45:41,734 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 747 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:45:41,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 463 Invalid, 3051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 38.1s Time] [2023-12-21 23:45:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18352 states. [2023-12-21 23:45:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18352 to 18352. [2023-12-21 23:45:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18352 states, 18350 states have (on average 1.2537874659400545) internal successors, (23007), 18351 states have internal predecessors, (23007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:42,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18352 states to 18352 states and 23007 transitions. [2023-12-21 23:45:42,106 INFO L78 Accepts]: Start accepts. Automaton has 18352 states and 23007 transitions. Word has length 101 [2023-12-21 23:45:42,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:45:42,107 INFO L495 AbstractCegarLoop]: Abstraction has 18352 states and 23007 transitions. [2023-12-21 23:45:42,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:42,107 INFO L276 IsEmpty]: Start isEmpty. Operand 18352 states and 23007 transitions. [2023-12-21 23:45:42,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 23:45:42,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:45:42,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:45:42,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-21 23:45:42,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:45:42,313 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:45:42,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:45:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash 298026657, now seen corresponding path program 1 times [2023-12-21 23:45:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:45:42,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793648274] [2023-12-21 23:45:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:45:42,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:45:42,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:45:42,315 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:45:42,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-21 23:45:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:45:42,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:45:42,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:45:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:45:42,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:45:42,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:45:42,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793648274] [2023-12-21 23:45:42,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793648274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:45:42,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:45:42,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:45:42,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572178707] [2023-12-21 23:45:42,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:45:42,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:45:42,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:45:42,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:45:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:45:42,552 INFO L87 Difference]: Start difference. First operand 18352 states and 23007 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:21,081 INFO L93 Difference]: Finished difference Result 42388 states and 54043 transitions. [2023-12-21 23:46:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:46:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-21 23:46:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:21,110 INFO L225 Difference]: With dead ends: 42388 [2023-12-21 23:46:21,110 INFO L226 Difference]: Without dead ends: 26615 [2023-12-21 23:46:21,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:46:21,127 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:21,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 669 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 38.1s Time] [2023-12-21 23:46:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26615 states. [2023-12-21 23:46:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26615 to 26613. [2023-12-21 23:46:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26613 states, 26611 states have (on average 1.212506106497313) internal successors, (32266), 26612 states have internal predecessors, (32266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26613 states to 26613 states and 32266 transitions. [2023-12-21 23:46:21,613 INFO L78 Accepts]: Start accepts. Automaton has 26613 states and 32266 transitions. Word has length 114 [2023-12-21 23:46:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:21,613 INFO L495 AbstractCegarLoop]: Abstraction has 26613 states and 32266 transitions. [2023-12-21 23:46:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 26613 states and 32266 transitions. [2023-12-21 23:46:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:46:21,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:21,616 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, 1] [2023-12-21 23:46:21,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:21,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:21,821 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:21,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1570065093, now seen corresponding path program 2 times [2023-12-21 23:46:21,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:21,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232776753] [2023-12-21 23:46:21,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:46:21,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:21,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:21,823 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:21,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-21 23:46:21,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:46:21,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:46:21,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:46:21,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-21 23:46:22,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:46:22,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232776753] [2023-12-21 23:46:22,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232776753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:46:22,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:46:22,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:46:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777426678] [2023-12-21 23:46:22,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:46:22,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:46:22,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:22,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:46:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:22,411 INFO L87 Difference]: Start difference. First operand 26613 states and 32266 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:22,702 INFO L93 Difference]: Finished difference Result 27547 states and 33442 transitions. [2023-12-21 23:46:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:46:22,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-21 23:46:22,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:22,729 INFO L225 Difference]: With dead ends: 27547 [2023-12-21 23:46:22,729 INFO L226 Difference]: Without dead ends: 26739 [2023-12-21 23:46:22,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:22,737 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 2974 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:22,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2974 Valid, 3091 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:46:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26739 states. [2023-12-21 23:46:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26739 to 26603. [2023-12-21 23:46:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26603 states, 26601 states have (on average 1.2110822901394684) internal successors, (32216), 26602 states have internal predecessors, (32216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26603 states to 26603 states and 32216 transitions. [2023-12-21 23:46:23,150 INFO L78 Accepts]: Start accepts. Automaton has 26603 states and 32216 transitions. Word has length 130 [2023-12-21 23:46:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:23,150 INFO L495 AbstractCegarLoop]: Abstraction has 26603 states and 32216 transitions. [2023-12-21 23:46:23,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 26603 states and 32216 transitions. [2023-12-21 23:46:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:46:23,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:23,154 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, 1] [2023-12-21 23:46:23,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:23,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:23,357 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:23,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1215359521, now seen corresponding path program 2 times [2023-12-21 23:46:23,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:23,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110499367] [2023-12-21 23:46:23,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:46:23,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:23,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:23,359 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:23,360 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 (29)] Waiting until timeout for monitored process [2023-12-21 23:46:23,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:46:23,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:46:23,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:46:23,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-21 23:46:23,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:46:23,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:23,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110499367] [2023-12-21 23:46:23,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110499367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:46:23,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:46:23,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:46:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315608177] [2023-12-21 23:46:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:46:23,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:46:23,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:46:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:23,929 INFO L87 Difference]: Start difference. First operand 26603 states and 32216 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:24,309 INFO L93 Difference]: Finished difference Result 27172 states and 32952 transitions. [2023-12-21 23:46:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:46:24,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-21 23:46:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:24,358 INFO L225 Difference]: With dead ends: 27172 [2023-12-21 23:46:24,359 INFO L226 Difference]: Without dead ends: 26843 [2023-12-21 23:46:24,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:24,369 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 2967 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:24,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2967 Valid, 3102 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:46:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26843 states. [2023-12-21 23:46:24,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26843 to 26775. [2023-12-21 23:46:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26775 states, 26773 states have (on average 1.2104358869009824) internal successors, (32407), 26774 states have internal predecessors, (32407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26775 states to 26775 states and 32407 transitions. [2023-12-21 23:46:24,860 INFO L78 Accepts]: Start accepts. Automaton has 26775 states and 32407 transitions. Word has length 130 [2023-12-21 23:46:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:24,860 INFO L495 AbstractCegarLoop]: Abstraction has 26775 states and 32407 transitions. [2023-12-21 23:46:24,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 26775 states and 32407 transitions. [2023-12-21 23:46:24,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:46:24,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:24,863 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, 1] [2023-12-21 23:46:24,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:25,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:25,066 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:25,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash 570522555, now seen corresponding path program 2 times [2023-12-21 23:46:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:25,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405013371] [2023-12-21 23:46:25,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:46:25,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:25,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:25,068 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:25,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-21 23:46:25,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:46:25,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:46:25,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:46:25,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-21 23:46:25,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:46:25,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:25,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405013371] [2023-12-21 23:46:25,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405013371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:46:25,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:46:25,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:46:25,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611913818] [2023-12-21 23:46:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:46:25,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:46:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:46:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:25,698 INFO L87 Difference]: Start difference. First operand 26775 states and 32407 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:26,017 INFO L93 Difference]: Finished difference Result 27362 states and 33164 transitions. [2023-12-21 23:46:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:46:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-21 23:46:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:26,047 INFO L225 Difference]: With dead ends: 27362 [2023-12-21 23:46:26,047 INFO L226 Difference]: Without dead ends: 27021 [2023-12-21 23:46:26,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:26,055 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 2962 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:26,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2962 Valid, 3095 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:46:26,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27021 states. [2023-12-21 23:46:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27021 to 26953. [2023-12-21 23:46:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26953 states, 26951 states have (on average 1.209788134021001) internal successors, (32605), 26952 states have internal predecessors, (32605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:26,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26953 states to 26953 states and 32605 transitions. [2023-12-21 23:46:26,502 INFO L78 Accepts]: Start accepts. Automaton has 26953 states and 32605 transitions. Word has length 130 [2023-12-21 23:46:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:26,502 INFO L495 AbstractCegarLoop]: Abstraction has 26953 states and 32605 transitions. [2023-12-21 23:46:26,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 26953 states and 32605 transitions. [2023-12-21 23:46:26,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 23:46:26,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:26,505 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, 1] [2023-12-21 23:46:26,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:26,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:26,709 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:26,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:26,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2032387181, now seen corresponding path program 1 times [2023-12-21 23:46:26,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:26,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575902342] [2023-12-21 23:46:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:46:26,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:26,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:26,711 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:26,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-21 23:46:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:46:26,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:46:26,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:46:28,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:46:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:46:29,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:29,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575902342] [2023-12-21 23:46:29,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575902342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:46:29,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:46:29,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:46:29,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336983729] [2023-12-21 23:46:29,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:46:29,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:46:29,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:29,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:46:29,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:46:29,553 INFO L87 Difference]: Start difference. First operand 26953 states and 32605 transitions. Second operand has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:46,470 INFO L93 Difference]: Finished difference Result 28476 states and 34409 transitions. [2023-12-21 23:46:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-21 23:46:46,472 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-21 23:46:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:46,499 INFO L225 Difference]: With dead ends: 28476 [2023-12-21 23:46:46,499 INFO L226 Difference]: Without dead ends: 27394 [2023-12-21 23:46:46,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7456 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=3247, Invalid=20933, Unknown=0, NotChecked=0, Total=24180 [2023-12-21 23:46:46,509 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 19711 mSDsluCounter, 12897 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19711 SdHoareTripleChecker+Valid, 14516 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:46,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19711 Valid, 14516 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3000 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-21 23:46:46,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27394 states. [2023-12-21 23:46:46,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27394 to 27173. [2023-12-21 23:46:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27173 states, 27171 states have (on average 1.2092672334474255) internal successors, (32857), 27172 states have internal predecessors, (32857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27173 states to 27173 states and 32857 transitions. [2023-12-21 23:46:46,990 INFO L78 Accepts]: Start accepts. Automaton has 27173 states and 32857 transitions. Word has length 131 [2023-12-21 23:46:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:46,990 INFO L495 AbstractCegarLoop]: Abstraction has 27173 states and 32857 transitions. [2023-12-21 23:46:46,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 27173 states and 32857 transitions. [2023-12-21 23:46:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 23:46:46,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:46,992 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, 1] [2023-12-21 23:46:46,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:47,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:47,193 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:47,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1790349623, now seen corresponding path program 1 times [2023-12-21 23:46:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101028001] [2023-12-21 23:46:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:46:47,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:47,195 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:47,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-21 23:46:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:46:47,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 23:46:47,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 130 proven. 50 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 23:46:49,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:46:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 61 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:46:52,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:52,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101028001] [2023-12-21 23:46:52,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101028001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:46:52,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:46:52,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2023-12-21 23:46:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526273797] [2023-12-21 23:46:52,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:46:52,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 23:46:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 23:46:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 23:46:52,188 INFO L87 Difference]: Start difference. First operand 27173 states and 32857 transitions. Second operand has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:29,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:48:29,257 INFO L93 Difference]: Finished difference Result 32198 states and 38700 transitions. [2023-12-21 23:48:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2023-12-21 23:48:29,259 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 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 131 [2023-12-21 23:48:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:48:29,292 INFO L225 Difference]: With dead ends: 32198 [2023-12-21 23:48:29,292 INFO L226 Difference]: Without dead ends: 29920 [2023-12-21 23:48:29,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47295 ImplicationChecksByTransitivity, 88.0s TimeCoverageRelationStatistics Valid=12461, Invalid=99429, Unknown=0, NotChecked=0, Total=111890 [2023-12-21 23:48:29,309 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 29065 mSDsluCounter, 20057 mSDsCounter, 0 mSdLazyCounter, 3508 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29065 SdHoareTripleChecker+Valid, 21675 SdHoareTripleChecker+Invalid, 3740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:48:29,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29065 Valid, 21675 Invalid, 3740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [232 Valid, 3508 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-21 23:48:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29920 states. [2023-12-21 23:48:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29920 to 28138. [2023-12-21 23:48:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28138 states, 28136 states have (on average 1.2077765140744954) internal successors, (33982), 28137 states have internal predecessors, (33982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28138 states to 28138 states and 33982 transitions. [2023-12-21 23:48:29,878 INFO L78 Accepts]: Start accepts. Automaton has 28138 states and 33982 transitions. Word has length 131 [2023-12-21 23:48:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:48:29,879 INFO L495 AbstractCegarLoop]: Abstraction has 28138 states and 33982 transitions. [2023-12-21 23:48:29,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 28138 states and 33982 transitions. [2023-12-21 23:48:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 23:48:29,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:48:29,881 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, 1, 1] [2023-12-21 23:48:29,887 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 (32)] Forceful destruction successful, exit code 0 [2023-12-21 23:48:30,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:48:30,085 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:48:30,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:48:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1398431679, now seen corresponding path program 1 times [2023-12-21 23:48:30,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:48:30,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50739327] [2023-12-21 23:48:30,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:48:30,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:48:30,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:48:30,087 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:48:30,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-21 23:48:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:48:30,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 23:48:30,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:48:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 127 proven. 68 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 23:48:32,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:48:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 127 proven. 68 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 23:48:34,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:48:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50739327] [2023-12-21 23:48:34,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50739327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:48:34,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:48:34,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:48:34,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009327872] [2023-12-21 23:48:34,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:48:34,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:48:34,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:48:34,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:48:34,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:48:34,015 INFO L87 Difference]: Start difference. First operand 28138 states and 33982 transitions. Second operand has 34 states, 34 states have (on average 6.029411764705882) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:49:23,326 INFO L93 Difference]: Finished difference Result 32337 states and 38901 transitions. [2023-12-21 23:49:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2023-12-21 23:49:23,327 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.029411764705882) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 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 132 [2023-12-21 23:49:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:49:23,358 INFO L225 Difference]: With dead ends: 32337 [2023-12-21 23:49:23,358 INFO L226 Difference]: Without dead ends: 31198 [2023-12-21 23:49:23,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14587 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=5810, Invalid=31246, Unknown=0, NotChecked=0, Total=37056 [2023-12-21 23:49:23,368 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 18985 mSDsluCounter, 20208 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18985 SdHoareTripleChecker+Valid, 21812 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:49:23,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18985 Valid, 21812 Invalid, 2690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2574 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-21 23:49:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31198 states. [2023-12-21 23:49:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31198 to 29920. [2023-12-21 23:49:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29920 states, 29918 states have (on average 1.205127348084765) internal successors, (36055), 29919 states have internal predecessors, (36055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29920 states to 29920 states and 36055 transitions. [2023-12-21 23:49:24,071 INFO L78 Accepts]: Start accepts. Automaton has 29920 states and 36055 transitions. Word has length 132 [2023-12-21 23:49:24,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:49:24,071 INFO L495 AbstractCegarLoop]: Abstraction has 29920 states and 36055 transitions. [2023-12-21 23:49:24,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.029411764705882) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 29920 states and 36055 transitions. [2023-12-21 23:49:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 23:49:24,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:49:24,074 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, 1, 1] [2023-12-21 23:49:24,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-21 23:49:24,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:49:24,275 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:49:24,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:49:24,275 INFO L85 PathProgramCache]: Analyzing trace with hash 709094905, now seen corresponding path program 1 times [2023-12-21 23:49:24,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:49:24,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952478822] [2023-12-21 23:49:24,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:49:24,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:49:24,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:49:24,276 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:49:24,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-21 23:49:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:49:24,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 23:49:24,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:49:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 129 proven. 59 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:49:26,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:49:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 129 proven. 59 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:49:27,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:49:27,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952478822] [2023-12-21 23:49:27,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952478822] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:49:27,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:49:27,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:49:27,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542144607] [2023-12-21 23:49:27,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:49:27,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:49:27,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:49:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:49:27,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:49:27,872 INFO L87 Difference]: Start difference. First operand 29920 states and 36055 transitions. Second operand has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:50:21,378 INFO L93 Difference]: Finished difference Result 34856 states and 41910 transitions. [2023-12-21 23:50:21,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 23:50:21,379 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-21 23:50:21,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:50:21,407 INFO L225 Difference]: With dead ends: 34856 [2023-12-21 23:50:21,407 INFO L226 Difference]: Without dead ends: 32785 [2023-12-21 23:50:21,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19475 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=7234, Invalid=42272, Unknown=0, NotChecked=0, Total=49506 [2023-12-21 23:50:21,418 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 19322 mSDsluCounter, 15222 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19322 SdHoareTripleChecker+Valid, 16813 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:50:21,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19322 Valid, 16813 Invalid, 2085 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-21 23:50:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32785 states. [2023-12-21 23:50:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32785 to 30975. [2023-12-21 23:50:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30975 states, 30973 states have (on average 1.204500694152972) internal successors, (37307), 30974 states have internal predecessors, (37307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30975 states to 30975 states and 37307 transitions. [2023-12-21 23:50:22,257 INFO L78 Accepts]: Start accepts. Automaton has 30975 states and 37307 transitions. Word has length 132 [2023-12-21 23:50:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:50:22,258 INFO L495 AbstractCegarLoop]: Abstraction has 30975 states and 37307 transitions. [2023-12-21 23:50:22,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 30975 states and 37307 transitions. [2023-12-21 23:50:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 23:50:22,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:50:22,262 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 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] [2023-12-21 23:50:22,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-21 23:50:22,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:22,466 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:50:22,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:50:22,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1153287105, now seen corresponding path program 1 times [2023-12-21 23:50:22,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:50:22,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835007442] [2023-12-21 23:50:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:50:22,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:22,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:50:22,469 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:50:22,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-21 23:50:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:50:22,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 23:50:22,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:50:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 15 proven. 185 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:50:22,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:50:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 15 proven. 185 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:50:23,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:50:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835007442] [2023-12-21 23:50:23,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835007442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:50:23,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:50:23,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 23:50:23,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005430298] [2023-12-21 23:50:23,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:50:23,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 23:50:23,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:50:23,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 23:50:23,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 23:50:23,064 INFO L87 Difference]: Start difference. First operand 30975 states and 37307 transitions. Second operand has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:50:24,991 INFO L93 Difference]: Finished difference Result 54927 states and 66083 transitions. [2023-12-21 23:50:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 23:50:24,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-21 23:50:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:50:25,040 INFO L225 Difference]: With dead ends: 54927 [2023-12-21 23:50:25,040 INFO L226 Difference]: Without dead ends: 48571 [2023-12-21 23:50:25,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 23:50:25,055 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 3145 mSDsluCounter, 7784 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3145 SdHoareTripleChecker+Valid, 9344 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:50:25,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3145 Valid, 9344 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:50:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48571 states. [2023-12-21 23:50:26,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48571 to 48197. [2023-12-21 23:50:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48197 states, 48195 states have (on average 1.1705571117335822) internal successors, (56415), 48196 states have internal predecessors, (56415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48197 states to 48197 states and 56415 transitions. [2023-12-21 23:50:27,003 INFO L78 Accepts]: Start accepts. Automaton has 48197 states and 56415 transitions. Word has length 134 [2023-12-21 23:50:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:50:27,003 INFO L495 AbstractCegarLoop]: Abstraction has 48197 states and 56415 transitions. [2023-12-21 23:50:27,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 48197 states and 56415 transitions. [2023-12-21 23:50:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 23:50:27,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:50:27,006 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:50:27,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-21 23:50:27,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:27,207 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:50:27,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:50:27,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1965052367, now seen corresponding path program 1 times [2023-12-21 23:50:27,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:50:27,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12179477] [2023-12-21 23:50:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:50:27,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:27,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:50:27,209 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:50:27,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-21 23:50:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:50:27,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:50:27,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:50:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 32 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:50:28,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:50:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 32 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:50:29,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:50:29,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12179477] [2023-12-21 23:50:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12179477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:50:29,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:50:29,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:50:29,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60061819] [2023-12-21 23:50:29,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:50:29,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:50:29,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:50:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:50:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:50:29,358 INFO L87 Difference]: Start difference. First operand 48197 states and 56415 transitions. Second operand has 34 states, 34 states have (on average 7.676470588235294) internal successors, (261), 34 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:50:35,256 INFO L93 Difference]: Finished difference Result 57685 states and 67356 transitions. [2023-12-21 23:50:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 23:50:35,257 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.676470588235294) internal successors, (261), 34 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 23:50:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:50:35,298 INFO L225 Difference]: With dead ends: 57685 [2023-12-21 23:50:35,299 INFO L226 Difference]: Without dead ends: 44557 [2023-12-21 23:50:35,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=914, Invalid=5248, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 23:50:35,315 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 25083 mSDsluCounter, 11939 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25083 SdHoareTripleChecker+Valid, 13481 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:50:35,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25083 Valid, 13481 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 23:50:35,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44557 states. [2023-12-21 23:50:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44557 to 39998. [2023-12-21 23:50:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39998 states, 39996 states have (on average 1.1734173417341733) internal successors, (46932), 39997 states have internal predecessors, (46932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39998 states to 39998 states and 46932 transitions. [2023-12-21 23:50:36,809 INFO L78 Accepts]: Start accepts. Automaton has 39998 states and 46932 transitions. Word has length 135 [2023-12-21 23:50:36,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:50:36,810 INFO L495 AbstractCegarLoop]: Abstraction has 39998 states and 46932 transitions. [2023-12-21 23:50:36,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.676470588235294) internal successors, (261), 34 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 39998 states and 46932 transitions. [2023-12-21 23:50:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 23:50:36,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:50:36,812 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:50:36,815 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 (36)] Forceful destruction successful, exit code 0 [2023-12-21 23:50:37,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:37,013 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:50:37,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:50:37,013 INFO L85 PathProgramCache]: Analyzing trace with hash 450560913, now seen corresponding path program 1 times [2023-12-21 23:50:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:50:37,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509341015] [2023-12-21 23:50:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:50:37,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:37,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:50:37,015 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:50:37,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-21 23:50:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:50:37,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:50:37,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:50:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 48 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:50:38,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:50:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 48 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:50:39,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:50:39,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509341015] [2023-12-21 23:50:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509341015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:50:39,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:50:39,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:50:39,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668490606] [2023-12-21 23:50:39,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:50:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:50:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:50:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:50:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:50:39,365 INFO L87 Difference]: Start difference. First operand 39998 states and 46932 transitions. Second operand has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:45,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:50:45,232 INFO L93 Difference]: Finished difference Result 42749 states and 50015 transitions. [2023-12-21 23:50:45,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 23:50:45,232 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 23:50:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:50:45,264 INFO L225 Difference]: With dead ends: 42749 [2023-12-21 23:50:45,264 INFO L226 Difference]: Without dead ends: 36041 [2023-12-21 23:50:45,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=884, Invalid=4816, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 23:50:45,270 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 26567 mSDsluCounter, 13357 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26567 SdHoareTripleChecker+Valid, 14898 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:50:45,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26567 Valid, 14898 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 23:50:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36041 states. [2023-12-21 23:50:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36041 to 31089. [2023-12-21 23:50:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31089 states, 31087 states have (on average 1.184578762826905) internal successors, (36825), 31088 states have internal predecessors, (36825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31089 states to 31089 states and 36825 transitions. [2023-12-21 23:50:46,096 INFO L78 Accepts]: Start accepts. Automaton has 31089 states and 36825 transitions. Word has length 135 [2023-12-21 23:50:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:50:46,097 INFO L495 AbstractCegarLoop]: Abstraction has 31089 states and 36825 transitions. [2023-12-21 23:50:46,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 31089 states and 36825 transitions. [2023-12-21 23:50:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:50:46,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:50:46,099 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 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, 1, 1, 1] [2023-12-21 23:50:46,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-21 23:50:46,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:46,300 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:50:46,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:50:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1710327405, now seen corresponding path program 1 times [2023-12-21 23:50:46,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:50:46,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549390887] [2023-12-21 23:50:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:50:46,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:46,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:50:46,301 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:50:46,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-21 23:50:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:50:46,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 23:50:46,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:50:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 134 proven. 68 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 23:50:50,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:50:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 134 proven. 68 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 23:50:53,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:50:53,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549390887] [2023-12-21 23:50:53,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549390887] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:50:53,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:50:53,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 41 [2023-12-21 23:50:53,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927405090] [2023-12-21 23:50:53,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:50:53,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 23:50:53,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:50:53,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 23:50:53,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 23:50:53,137 INFO L87 Difference]: Start difference. First operand 31089 states and 36825 transitions. Second operand has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:51:58,357 INFO L93 Difference]: Finished difference Result 38352 states and 44631 transitions. [2023-12-21 23:51:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-12-21 23:51:58,358 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:51:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:51:58,389 INFO L225 Difference]: With dead ends: 38352 [2023-12-21 23:51:58,389 INFO L226 Difference]: Without dead ends: 33452 [2023-12-21 23:51:58,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11221 ImplicationChecksByTransitivity, 54.3s TimeCoverageRelationStatistics Valid=4356, Invalid=28586, Unknown=0, NotChecked=0, Total=32942 [2023-12-21 23:51:58,396 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 13790 mSDsluCounter, 26879 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13790 SdHoareTripleChecker+Valid, 28453 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-21 23:51:58,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13790 Valid, 28453 Invalid, 3348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [151 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-12-21 23:51:58,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33452 states. [2023-12-21 23:51:59,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33452 to 31682. [2023-12-21 23:51:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31682 states, 31680 states have (on average 1.1820391414141413) internal successors, (37447), 31681 states have internal predecessors, (37447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31682 states to 31682 states and 37447 transitions. [2023-12-21 23:51:59,277 INFO L78 Accepts]: Start accepts. Automaton has 31682 states and 37447 transitions. Word has length 136 [2023-12-21 23:51:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:51:59,277 INFO L495 AbstractCegarLoop]: Abstraction has 31682 states and 37447 transitions. [2023-12-21 23:51:59,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:59,277 INFO L276 IsEmpty]: Start isEmpty. Operand 31682 states and 37447 transitions. [2023-12-21 23:51:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:51:59,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:51:59,279 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 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, 1, 1, 1] [2023-12-21 23:51:59,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-12-21 23:51:59,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:51:59,480 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:51:59,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:51:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1360215085, now seen corresponding path program 1 times [2023-12-21 23:51:59,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:51:59,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124731220] [2023-12-21 23:51:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:51:59,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:51:59,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:51:59,482 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:51:59,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-21 23:51:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:51:59,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 23:51:59,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:52:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 138 proven. 50 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 23:52:02,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:52:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 66 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:52:04,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:52:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124731220] [2023-12-21 23:52:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124731220] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:52:04,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:52:04,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2023-12-21 23:52:04,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357003322] [2023-12-21 23:52:04,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:52:04,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 23:52:04,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:52:04,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 23:52:04,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1607, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 23:52:04,873 INFO L87 Difference]: Start difference. First operand 31682 states and 37447 transitions. Second operand has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:47,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:52:47,330 INFO L93 Difference]: Finished difference Result 37489 states and 43660 transitions. [2023-12-21 23:52:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 23:52:47,331 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:52:47,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:52:47,364 INFO L225 Difference]: With dead ends: 37489 [2023-12-21 23:52:47,364 INFO L226 Difference]: Without dead ends: 36358 [2023-12-21 23:52:47,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18420 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=5291, Invalid=46011, Unknown=0, NotChecked=0, Total=51302 [2023-12-21 23:52:47,371 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 27099 mSDsluCounter, 24635 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27099 SdHoareTripleChecker+Valid, 26242 SdHoareTripleChecker+Invalid, 3354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:52:47,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27099 Valid, 26242 Invalid, 3354 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [141 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-21 23:52:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36358 states. [2023-12-21 23:52:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36358 to 33901. [2023-12-21 23:52:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33901 states, 33899 states have (on average 1.1742234284197175) internal successors, (39805), 33900 states have internal predecessors, (39805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33901 states to 33901 states and 39805 transitions. [2023-12-21 23:52:48,521 INFO L78 Accepts]: Start accepts. Automaton has 33901 states and 39805 transitions. Word has length 136 [2023-12-21 23:52:48,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:52:48,521 INFO L495 AbstractCegarLoop]: Abstraction has 33901 states and 39805 transitions. [2023-12-21 23:52:48,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 33901 states and 39805 transitions. [2023-12-21 23:52:48,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:52:48,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:52:48,524 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 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, 1, 1, 1] [2023-12-21 23:52:48,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-12-21 23:52:48,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:48,724 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:52:48,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:52:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1864868823, now seen corresponding path program 1 times [2023-12-21 23:52:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:52:48,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202828352] [2023-12-21 23:52:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:52:48,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:48,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:52:48,728 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:52:48,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-21 23:52:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:52:48,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:52:48,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:52:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 138 proven. 65 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 23:52:50,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:52:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 135 proven. 68 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 23:52:51,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:52:51,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202828352] [2023-12-21 23:52:51,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202828352] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:52:51,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:52:51,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2023-12-21 23:52:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206365383] [2023-12-21 23:52:51,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:52:51,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 23:52:51,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:52:51,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 23:52:51,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-12-21 23:52:51,055 INFO L87 Difference]: Start difference. First operand 33901 states and 39805 transitions. Second operand has 24 states, 24 states have (on average 8.75) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:52:54,316 INFO L93 Difference]: Finished difference Result 35967 states and 41995 transitions. [2023-12-21 23:52:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 23:52:54,321 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.75) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:52:54,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:52:54,356 INFO L225 Difference]: With dead ends: 35967 [2023-12-21 23:52:54,356 INFO L226 Difference]: Without dead ends: 31722 [2023-12-21 23:52:54,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 23:52:54,367 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 11932 mSDsluCounter, 6490 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11932 SdHoareTripleChecker+Valid, 8014 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:52:54,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11932 Valid, 8014 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 23:52:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31722 states. [2023-12-21 23:52:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31722 to 30404. [2023-12-21 23:52:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30404 states, 30402 states have (on average 1.1826853496480494) internal successors, (35956), 30403 states have internal predecessors, (35956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30404 states to 30404 states and 35956 transitions. [2023-12-21 23:52:55,355 INFO L78 Accepts]: Start accepts. Automaton has 30404 states and 35956 transitions. Word has length 136 [2023-12-21 23:52:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:52:55,355 INFO L495 AbstractCegarLoop]: Abstraction has 30404 states and 35956 transitions. [2023-12-21 23:52:55,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.75) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 30404 states and 35956 transitions. [2023-12-21 23:52:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:52:55,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:52:55,357 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 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, 1, 1, 1] [2023-12-21 23:52:55,361 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 (40)] Forceful destruction successful, exit code 0 [2023-12-21 23:52:55,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:55,558 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:52:55,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:52:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1528895309, now seen corresponding path program 1 times [2023-12-21 23:52:55,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:52:55,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202129514] [2023-12-21 23:52:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:52:55,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:55,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:52:55,560 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:52:55,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-21 23:52:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:52:55,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 23:52:55,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:52:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 134 proven. 69 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 23:52:58,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:53:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 32 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:53:01,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:53:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202129514] [2023-12-21 23:53:01,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202129514] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:53:01,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:53:01,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 44 [2023-12-21 23:53:01,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256974114] [2023-12-21 23:53:01,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:53:01,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 23:53:01,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:53:01,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 23:53:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1694, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 23:53:01,957 INFO L87 Difference]: Start difference. First operand 30404 states and 35956 transitions. Second operand has 44 states, 44 states have (on average 5.636363636363637) internal successors, (248), 44 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:53:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:53:47,244 INFO L93 Difference]: Finished difference Result 33653 states and 39353 transitions. [2023-12-21 23:53:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-12-21 23:53:47,246 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.636363636363637) internal successors, (248), 44 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:53:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:53:47,278 INFO L225 Difference]: With dead ends: 33653 [2023-12-21 23:53:47,279 INFO L226 Difference]: Without dead ends: 30363 [2023-12-21 23:53:47,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20198 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=5748, Invalid=50184, Unknown=0, NotChecked=0, Total=55932 [2023-12-21 23:53:47,291 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 31141 mSDsluCounter, 17158 mSDsCounter, 0 mSdLazyCounter, 3576 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31141 SdHoareTripleChecker+Valid, 18755 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:53:47,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31141 Valid, 18755 Invalid, 3743 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [167 Valid, 3576 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-21 23:53:47,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30363 states. [2023-12-21 23:53:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30363 to 28391. [2023-12-21 23:53:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28391 states, 28389 states have (on average 1.1893338969319103) internal successors, (33764), 28390 states have internal predecessors, (33764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:53:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28391 states to 28391 states and 33764 transitions. [2023-12-21 23:53:48,147 INFO L78 Accepts]: Start accepts. Automaton has 28391 states and 33764 transitions. Word has length 136 [2023-12-21 23:53:48,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:53:48,147 INFO L495 AbstractCegarLoop]: Abstraction has 28391 states and 33764 transitions. [2023-12-21 23:53:48,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.636363636363637) internal successors, (248), 44 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:53:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand 28391 states and 33764 transitions. [2023-12-21 23:53:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 23:53:48,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:53:48,149 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 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] [2023-12-21 23:53:48,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-21 23:53:48,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:53:48,349 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:53:48,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:53:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1806980845, now seen corresponding path program 2 times [2023-12-21 23:53:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:53:48,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186418439] [2023-12-21 23:53:48,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:53:48,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:53:48,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:53:48,352 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:53:48,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-21 23:53:48,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 23:53:48,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:53:48,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 23:53:48,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:53:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 137 proven. 59 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 23:53:51,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:53:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 39 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:53:55,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:53:55,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186418439] [2023-12-21 23:53:55,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186418439] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:53:55,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:53:55,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 47 [2023-12-21 23:53:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687016412] [2023-12-21 23:53:55,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:53:55,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 23:53:55,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:53:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 23:53:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1903, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 23:53:55,215 INFO L87 Difference]: Start difference. First operand 28391 states and 33764 transitions. Second operand has 47 states, 47 states have (on average 5.170212765957447) internal successors, (243), 47 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:54:39,120 INFO L93 Difference]: Finished difference Result 32043 states and 37580 transitions. [2023-12-21 23:54:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-12-21 23:54:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.170212765957447) internal successors, (243), 47 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-21 23:54:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:54:39,153 INFO L225 Difference]: With dead ends: 32043 [2023-12-21 23:54:39,153 INFO L226 Difference]: Without dead ends: 30342 [2023-12-21 23:54:39,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18817 ImplicationChecksByTransitivity, 40.3s TimeCoverageRelationStatistics Valid=5499, Invalid=44901, Unknown=0, NotChecked=0, Total=50400 [2023-12-21 23:54:39,163 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 23510 mSDsluCounter, 21246 mSDsCounter, 0 mSdLazyCounter, 3446 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23510 SdHoareTripleChecker+Valid, 22779 SdHoareTripleChecker+Invalid, 3620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 3446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-21 23:54:39,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23510 Valid, 22779 Invalid, 3620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [174 Valid, 3446 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-21 23:54:39,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30342 states. [2023-12-21 23:54:39,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30342 to 28460. [2023-12-21 23:54:39,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28460 states, 28458 states have (on average 1.1881369035069225) internal successors, (33812), 28459 states have internal predecessors, (33812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28460 states to 28460 states and 33812 transitions. [2023-12-21 23:54:40,018 INFO L78 Accepts]: Start accepts. Automaton has 28460 states and 33812 transitions. Word has length 137 [2023-12-21 23:54:40,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:54:40,018 INFO L495 AbstractCegarLoop]: Abstraction has 28460 states and 33812 transitions. [2023-12-21 23:54:40,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.170212765957447) internal successors, (243), 47 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 28460 states and 33812 transitions. [2023-12-21 23:54:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 23:54:40,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:54:40,020 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 23:54:40,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-21 23:54:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:54:40,221 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:54:40,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:54:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash 436761587, now seen corresponding path program 1 times [2023-12-21 23:54:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:54:40,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224166080] [2023-12-21 23:54:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:54:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:54:40,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:54:40,222 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:54:40,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-21 23:54:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:54:40,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 23:54:40,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:54:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 149 proven. 40 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 23:54:41,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:54:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 23:54:42,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:54:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224166080] [2023-12-21 23:54:42,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224166080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:54:42,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:54:42,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2023-12-21 23:54:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470273658] [2023-12-21 23:54:42,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:54:42,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 23:54:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:54:42,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 23:54:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-12-21 23:54:42,457 INFO L87 Difference]: Start difference. First operand 28460 states and 33812 transitions. Second operand has 25 states, 25 states have (on average 7.68) internal successors, (192), 25 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:45,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:54:45,114 INFO L93 Difference]: Finished difference Result 29834 states and 35250 transitions. [2023-12-21 23:54:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 23:54:45,115 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.68) internal successors, (192), 25 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-21 23:54:45,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:54:45,145 INFO L225 Difference]: With dead ends: 29834 [2023-12-21 23:54:45,146 INFO L226 Difference]: Without dead ends: 27869 [2023-12-21 23:54:45,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=519, Invalid=1737, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 23:54:45,155 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 13553 mSDsluCounter, 6339 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13553 SdHoareTripleChecker+Valid, 7850 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:54:45,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13553 Valid, 7850 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 23:54:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27869 states. [2023-12-21 23:54:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27869 to 27186. [2023-12-21 23:54:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27186 states, 27184 states have (on average 1.1937904649793996) internal successors, (32452), 27185 states have internal predecessors, (32452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27186 states to 27186 states and 32452 transitions. [2023-12-21 23:54:45,889 INFO L78 Accepts]: Start accepts. Automaton has 27186 states and 32452 transitions. Word has length 138 [2023-12-21 23:54:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:54:45,889 INFO L495 AbstractCegarLoop]: Abstraction has 27186 states and 32452 transitions. [2023-12-21 23:54:45,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.68) internal successors, (192), 25 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 27186 states and 32452 transitions. [2023-12-21 23:54:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 23:54:45,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:54:45,890 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:54:45,894 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 (43)] Ended with exit code 0 [2023-12-21 23:54:46,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:54:46,091 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:54:46,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:54:46,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1752291729, now seen corresponding path program 1 times [2023-12-21 23:54:46,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:54:46,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639323886] [2023-12-21 23:54:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:54:46,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:54:46,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:54:46,093 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:54:46,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-21 23:54:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:54:46,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 23:54:46,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:54:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-21 23:54:48,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:54:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-21 23:54:52,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:54:52,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639323886] [2023-12-21 23:54:52,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639323886] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:54:52,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:54:52,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2023-12-21 23:54:52,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959802072] [2023-12-21 23:54:52,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:54:52,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 23:54:52,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:54:52,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 23:54:52,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 23:54:52,301 INFO L87 Difference]: Start difference. First operand 27186 states and 32452 transitions. Second operand has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:58,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-12-21 23:55:20,277 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 (44)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 23:55:20,278 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 23:55:21,285 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 (44)] Forceful destruction successful, exit code 0 [2023-12-21 23:55:21,481 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-21 23:55:21,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-21 23:55:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 23:55:21,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=627, Invalid=2794, Unknown=1, NotChecked=0, Total=3422 [2023-12-21 23:55:21,504 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 688 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-21 23:55:21,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 925 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-21 23:55:21,506 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-21 23:55:21,506 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (27186states) and FLOYD_HOARE automaton (currently 33 states, 38 states before enhancement),while executing Executor. [2023-12-21 23:55:21,508 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-21 23:55:21,510 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-21 23:55:21,517 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 23:55:21,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:55:21 BoogieIcfgContainer [2023-12-21 23:55:21,522 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 23:55:21,523 INFO L158 Benchmark]: Toolchain (without parser) took 842685.14ms. Allocated memory was 187.7MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 125.3MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 439.8MB. Max. memory is 8.0GB. [2023-12-21 23:55:21,523 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 187.7MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 23:55:21,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1805.77ms. Allocated memory was 187.7MB in the beginning and 247.5MB in the end (delta: 59.8MB). Free memory was 125.3MB in the beginning and 145.5MB in the end (delta: -20.3MB). Peak memory consumption was 102.6MB. Max. memory is 8.0GB. [2023-12-21 23:55:21,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 233.89ms. Allocated memory is still 247.5MB. Free memory was 145.5MB in the beginning and 172.3MB in the end (delta: -26.7MB). Peak memory consumption was 51.9MB. Max. memory is 8.0GB. [2023-12-21 23:55:21,523 INFO L158 Benchmark]: Boogie Preprocessor took 310.86ms. Allocated memory is still 247.5MB. Free memory was 172.3MB in the beginning and 138.7MB in the end (delta: 33.6MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-12-21 23:55:21,523 INFO L158 Benchmark]: RCFGBuilder took 26362.92ms. Allocated memory was 247.5MB in the beginning and 400.6MB in the end (delta: 153.1MB). Free memory was 138.2MB in the beginning and 159.7MB in the end (delta: -21.5MB). Peak memory consumption was 149.9MB. Max. memory is 8.0GB. [2023-12-21 23:55:21,524 INFO L158 Benchmark]: TraceAbstraction took 813963.17ms. Allocated memory was 400.6MB in the beginning and 3.1GB in the end (delta: 2.7GB). Free memory was 159.2MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 260.1MB. Max. memory is 8.0GB. [2023-12-21 23:55:21,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 187.7MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1805.77ms. Allocated memory was 187.7MB in the beginning and 247.5MB in the end (delta: 59.8MB). Free memory was 125.3MB in the beginning and 145.5MB in the end (delta: -20.3MB). Peak memory consumption was 102.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 233.89ms. Allocated memory is still 247.5MB. Free memory was 145.5MB in the beginning and 172.3MB in the end (delta: -26.7MB). Peak memory consumption was 51.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 310.86ms. Allocated memory is still 247.5MB. Free memory was 172.3MB in the beginning and 138.7MB in the end (delta: 33.6MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * RCFGBuilder took 26362.92ms. Allocated memory was 247.5MB in the beginning and 400.6MB in the end (delta: 153.1MB). Free memory was 138.2MB in the beginning and 159.7MB in the end (delta: -21.5MB). Peak memory consumption was 149.9MB. Max. memory is 8.0GB. * TraceAbstraction took 813963.17ms. Allocated memory was 400.6MB in the beginning and 3.1GB in the end (delta: 2.7GB). Free memory was 159.2MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 260.1MB. 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: 290]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 290). Cancelled while NwaCegarLoop was constructing difference of abstraction (27186states) and FLOYD_HOARE automaton (currently 33 states, 38 states before enhancement),while executing Executor. - TimeoutResultAtElement [Line: 353]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 353). Cancelled while NwaCegarLoop was constructing difference of abstraction (27186states) and FLOYD_HOARE automaton (currently 33 states, 38 states before enhancement),while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 813.9s, OverallIterations: 43, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 714.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 348310 SdHoareTripleChecker+Valid, 303.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348310 mSDsluCounter, 400943 SdHoareTripleChecker+Invalid, 259.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 341493 mSDsCounter, 4768 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53617 IncrementalHoareTripleChecker+Invalid, 58385 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4768 mSolverCounterUnsat, 59450 mSDtfsCounter, 53617 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8205 GetRequests, 5723 SyntacticMatches, 1 SemanticMatches, 2480 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165905 ImplicationChecksByTransitivity, 417.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48197occurred in iteration=34, InterpolantAutomatonStates: 2009, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.9s AutomataMinimizationTime, 42 MinimizatonAttempts, 30447 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 70.9s InterpolantComputationTime, 3857 NumberOfCodeBlocks, 3593 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 6360 ConstructedInterpolants, 1328 QuantifiedInterpolants, 84701 SizeOfPredicates, 206 NumberOfNonLiveVariables, 8245 ConjunctsInSsa, 458 ConjunctsInUnsatCore, 66 InterpolantComputations, 20 PerfectInterpolantSequences, 4369/7989 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