/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/bitvector/soft_float_1-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 07:21:27,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 07:21:27,278 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 07:21:27,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 07:21:27,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 07:21:27,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 07:21:27,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 07:21:27,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 07:21:27,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 07:21:27,313 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 07:21:27,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 07:21:27,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 07:21:27,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 07:21:27,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 07:21:27,315 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 07:21:27,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 07:21:27,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 07:21:27,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 07:21:27,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 07:21:27,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 07:21:27,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 07:21:27,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 07:21:27,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 07:21:27,322 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 07:21:27,322 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 07:21:27,322 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 07:21:27,323 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 07:21:27,323 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 07:21:27,323 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 07:21:27,323 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 07:21:27,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 07:21:27,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 07:21:27,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 07:21:27,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 07:21:27,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:21:27,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 07:21:27,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 07:21:27,325 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 07:21:27,325 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 07:21:27,325 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 07:21:27,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 07:21:27,325 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 07:21:27,326 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 07:21:27,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 07:21:27,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 07:21:27,326 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 07:21:27,326 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 07:21:27,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 07:21:27,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 07:21:27,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 07:21:27,505 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 07:21:27,505 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 07:21:27,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2023-12-16 07:21:28,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 07:21:28,696 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 07:21:28,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2023-12-16 07:21:28,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cd4b3a26/2851f6be0a884768b50f9ab2ca72193d/FLAG15b361627 [2023-12-16 07:21:28,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cd4b3a26/2851f6be0a884768b50f9ab2ca72193d [2023-12-16 07:21:28,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 07:21:28,734 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 07:21:28,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 07:21:28,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 07:21:28,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 07:21:28,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:21:28" (1/1) ... [2023-12-16 07:21:28,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c66ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:28, skipping insertion in model container [2023-12-16 07:21:28,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:21:28" (1/1) ... [2023-12-16 07:21:28,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 07:21:28,902 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c[755,768] [2023-12-16 07:21:28,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:21:28,982 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 07:21:28,993 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c[755,768] [2023-12-16 07:21:29,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:21:29,042 INFO L206 MainTranslator]: Completed translation [2023-12-16 07:21:29,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29 WrapperNode [2023-12-16 07:21:29,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 07:21:29,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 07:21:29,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 07:21:29,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 07:21:29,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,087 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 149 [2023-12-16 07:21:29,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 07:21:29,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 07:21:29,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 07:21:29,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 07:21:29,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,122 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 07:21:29,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 07:21:29,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 07:21:29,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 07:21:29,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 07:21:29,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (1/1) ... [2023-12-16 07:21:29,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:21:29,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 07:21:29,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 07:21:29,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 07:21:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 07:21:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 07:21:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-12-16 07:21:29,253 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-12-16 07:21:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 07:21:29,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 07:21:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 07:21:29,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 07:21:29,338 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 07:21:29,340 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 07:21:29,564 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 07:21:29,582 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 07:21:29,582 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 07:21:29,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:21:29 BoogieIcfgContainer [2023-12-16 07:21:29,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 07:21:29,584 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 07:21:29,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 07:21:29,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 07:21:29,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:21:28" (1/3) ... [2023-12-16 07:21:29,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58996f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:21:29, skipping insertion in model container [2023-12-16 07:21:29,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:21:29" (2/3) ... [2023-12-16 07:21:29,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58996f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:21:29, skipping insertion in model container [2023-12-16 07:21:29,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:21:29" (3/3) ... [2023-12-16 07:21:29,589 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2023-12-16 07:21:29,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 07:21:29,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 07:21:29,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 07:21:29,636 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;@5e3e00cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 07:21:29,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 07:21:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 55 states have (on average 1.6545454545454545) internal successors, (91), 58 states have internal predecessors, (91), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 07:21:29,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 07:21:29,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:29,645 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:29,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:29,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash 132641120, now seen corresponding path program 1 times [2023-12-16 07:21:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:29,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188047765] [2023-12-16 07:21:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:29,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:29,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:29,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:29,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 07:21:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:29,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 07:21:29,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:29,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:21:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:29,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:29,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188047765] [2023-12-16 07:21:29,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188047765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:21:29,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:21:29,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-16 07:21:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104529921] [2023-12-16 07:21:29,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:21:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:21:29,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:21:30,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:21:30,006 INFO L87 Difference]: Start difference. First operand has 67 states, 55 states have (on average 1.6545454545454545) internal successors, (91), 58 states have internal predecessors, (91), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:30,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:30,150 INFO L93 Difference]: Finished difference Result 180 states and 309 transitions. [2023-12-16 07:21:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:21:30,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-12-16 07:21:30,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:30,161 INFO L225 Difference]: With dead ends: 180 [2023-12-16 07:21:30,161 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 07:21:30,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:21:30,166 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 57 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:30,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 705 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:21:30,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 07:21:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2023-12-16 07:21:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 64 states have internal predecessors, (92), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2023-12-16 07:21:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 116 transitions. [2023-12-16 07:21:30,212 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 116 transitions. Word has length 28 [2023-12-16 07:21:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:30,213 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 116 transitions. [2023-12-16 07:21:30,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 116 transitions. [2023-12-16 07:21:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 07:21:30,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:30,216 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 07:21:30,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 07:21:30,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:30,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:30,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash 575955966, now seen corresponding path program 1 times [2023-12-16 07:21:30,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:30,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328323213] [2023-12-16 07:21:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:30,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:30,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:30,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:30,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 07:21:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:30,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 07:21:30,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:30,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:30,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328323213] [2023-12-16 07:21:30,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328323213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:30,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:30,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:21:30,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607646531] [2023-12-16 07:21:30,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:30,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:21:30,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:30,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:21:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:21:30,553 INFO L87 Difference]: Start difference. First operand 76 states and 116 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:30,627 INFO L93 Difference]: Finished difference Result 163 states and 251 transitions. [2023-12-16 07:21:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:21:30,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2023-12-16 07:21:30,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:30,631 INFO L225 Difference]: With dead ends: 163 [2023-12-16 07:21:30,631 INFO L226 Difference]: Without dead ends: 122 [2023-12-16 07:21:30,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:21:30,633 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 51 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:30,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 412 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:21:30,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-16 07:21:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2023-12-16 07:21:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 100 states have (on average 1.48) internal successors, (148), 101 states have internal predecessors, (148), 14 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (18), 16 states have call predecessors, (18), 13 states have call successors, (18) [2023-12-16 07:21:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 180 transitions. [2023-12-16 07:21:30,649 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 180 transitions. Word has length 32 [2023-12-16 07:21:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:30,650 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 180 transitions. [2023-12-16 07:21:30,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 180 transitions. [2023-12-16 07:21:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 07:21:30,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:30,651 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 07:21:30,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 07:21:30,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:30,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:30,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1256014336, now seen corresponding path program 1 times [2023-12-16 07:21:30,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:30,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368742192] [2023-12-16 07:21:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:30,860 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 [2023-12-16 07:21:30,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:30,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:30,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 07:21:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:30,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 07:21:30,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:30,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:30,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:30,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368742192] [2023-12-16 07:21:30,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368742192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:30,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:30,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 07:21:30,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157782798] [2023-12-16 07:21:30,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:30,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 07:21:30,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 07:21:30,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:21:30,956 INFO L87 Difference]: Start difference. First operand 118 states and 180 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:31,065 INFO L93 Difference]: Finished difference Result 152 states and 229 transitions. [2023-12-16 07:21:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 07:21:31,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2023-12-16 07:21:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:31,067 INFO L225 Difference]: With dead ends: 152 [2023-12-16 07:21:31,067 INFO L226 Difference]: Without dead ends: 114 [2023-12-16 07:21:31,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-16 07:21:31,072 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 39 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:31,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 484 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:21:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-16 07:21:31,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2023-12-16 07:21:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 94 states have internal predecessors, (136), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (16), 14 states have call predecessors, (16), 11 states have call successors, (16) [2023-12-16 07:21:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 164 transitions. [2023-12-16 07:21:31,086 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 164 transitions. Word has length 32 [2023-12-16 07:21:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:31,089 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 164 transitions. [2023-12-16 07:21:31,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 164 transitions. [2023-12-16 07:21:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 07:21:31,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:31,090 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-12-16 07:21:31,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:31,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:31,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:31,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1734345439, now seen corresponding path program 1 times [2023-12-16 07:21:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:31,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138837961] [2023-12-16 07:21:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:31,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:31,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:31,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:31,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 07:21:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:31,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:21:31,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:31,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:31,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:31,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138837961] [2023-12-16 07:21:31,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138837961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:31,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:31,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:21:31,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117217143] [2023-12-16 07:21:31,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:31,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:21:31,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:21:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:21:31,351 INFO L87 Difference]: Start difference. First operand 109 states and 164 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:31,379 INFO L93 Difference]: Finished difference Result 212 states and 322 transitions. [2023-12-16 07:21:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 07:21:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-12-16 07:21:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:31,381 INFO L225 Difference]: With dead ends: 212 [2023-12-16 07:21:31,381 INFO L226 Difference]: Without dead ends: 170 [2023-12-16 07:21:31,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:31,382 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 67 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:31,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 318 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-16 07:21:31,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 142. [2023-12-16 07:21:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 125 states have internal predecessors, (175), 14 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (18), 16 states have call predecessors, (18), 13 states have call successors, (18) [2023-12-16 07:21:31,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 207 transitions. [2023-12-16 07:21:31,390 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 207 transitions. Word has length 36 [2023-12-16 07:21:31,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:31,390 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 207 transitions. [2023-12-16 07:21:31,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:31,391 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 207 transitions. [2023-12-16 07:21:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 07:21:31,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:31,392 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-12-16 07:21:31,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 07:21:31,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:31,594 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:31,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash -713277085, now seen corresponding path program 1 times [2023-12-16 07:21:31,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:31,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577024776] [2023-12-16 07:21:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:31,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:31,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:31,597 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:31,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 07:21:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:31,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 07:21:31,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:31,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:21:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:31,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:31,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577024776] [2023-12-16 07:21:31,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577024776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:21:31,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:21:31,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-16 07:21:31,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229750713] [2023-12-16 07:21:31,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:21:31,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:21:31,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:21:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:21:31,714 INFO L87 Difference]: Start difference. First operand 142 states and 207 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:31,780 INFO L93 Difference]: Finished difference Result 325 states and 481 transitions. [2023-12-16 07:21:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:21:31,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-12-16 07:21:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:31,782 INFO L225 Difference]: With dead ends: 325 [2023-12-16 07:21:31,782 INFO L226 Difference]: Without dead ends: 252 [2023-12-16 07:21:31,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:21:31,783 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 54 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:31,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 412 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-16 07:21:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 240. [2023-12-16 07:21:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 212 states have (on average 1.3773584905660377) internal successors, (292), 211 states have internal predecessors, (292), 24 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (30), 30 states have call predecessors, (30), 23 states have call successors, (30) [2023-12-16 07:21:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 346 transitions. [2023-12-16 07:21:31,798 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 346 transitions. Word has length 36 [2023-12-16 07:21:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:31,799 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 346 transitions. [2023-12-16 07:21:31,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:31,799 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 346 transitions. [2023-12-16 07:21:31,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 07:21:31,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:31,800 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 07:21:31,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 07:21:32,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:32,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:32,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1892344627, now seen corresponding path program 1 times [2023-12-16 07:21:32,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:32,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168950627] [2023-12-16 07:21:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:32,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:32,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:32,012 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:32,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 07:21:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:32,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 07:21:32,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:32,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:21:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:32,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:32,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168950627] [2023-12-16 07:21:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168950627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:21:32,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:21:32,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-16 07:21:32,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799798446] [2023-12-16 07:21:32,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:21:32,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 07:21:32,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:32,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 07:21:32,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:21:32,159 INFO L87 Difference]: Start difference. First operand 240 states and 346 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:32,273 INFO L93 Difference]: Finished difference Result 289 states and 416 transitions. [2023-12-16 07:21:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:21:32,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-12-16 07:21:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:32,275 INFO L225 Difference]: With dead ends: 289 [2023-12-16 07:21:32,275 INFO L226 Difference]: Without dead ends: 240 [2023-12-16 07:21:32,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 07:21:32,277 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 44 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:32,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 559 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:21:32,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-16 07:21:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 222. [2023-12-16 07:21:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 198 states have (on average 1.3636363636363635) internal successors, (270), 197 states have internal predecessors, (270), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2023-12-16 07:21:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 316 transitions. [2023-12-16 07:21:32,289 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 316 transitions. Word has length 36 [2023-12-16 07:21:32,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:32,289 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 316 transitions. [2023-12-16 07:21:32,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:32,289 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 316 transitions. [2023-12-16 07:21:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 07:21:32,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:32,291 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-12-16 07:21:32,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:32,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:32,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:32,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash 189552572, now seen corresponding path program 1 times [2023-12-16 07:21:32,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:32,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409610954] [2023-12-16 07:21:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:32,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:32,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:32,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:32,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 07:21:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:32,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:21:32,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 07:21:32,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:32,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:32,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409610954] [2023-12-16 07:21:32,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409610954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:32,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:32,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:21:32,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121957936] [2023-12-16 07:21:32,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:32,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:21:32,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:32,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:21:32,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:21:32,564 INFO L87 Difference]: Start difference. First operand 222 states and 316 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:32,613 INFO L93 Difference]: Finished difference Result 386 states and 547 transitions. [2023-12-16 07:21:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 07:21:32,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-12-16 07:21:32,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:32,615 INFO L225 Difference]: With dead ends: 386 [2023-12-16 07:21:32,615 INFO L226 Difference]: Without dead ends: 166 [2023-12-16 07:21:32,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:32,616 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 26 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:32,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 227 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:32,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-16 07:21:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 156. [2023-12-16 07:21:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 138 states have (on average 1.326086956521739) internal successors, (183), 140 states have internal predecessors, (183), 13 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (18), 15 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-16 07:21:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 214 transitions. [2023-12-16 07:21:32,621 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 214 transitions. Word has length 38 [2023-12-16 07:21:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:32,621 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 214 transitions. [2023-12-16 07:21:32,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 214 transitions. [2023-12-16 07:21:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 07:21:32,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:32,622 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-12-16 07:21:32,624 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 (8)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:32,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:32,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:32,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:32,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1073353582, now seen corresponding path program 1 times [2023-12-16 07:21:32,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:32,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715618473] [2023-12-16 07:21:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:32,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:32,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:32,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:32,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 07:21:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:32,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 07:21:32,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:32,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:21:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:32,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:32,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715618473] [2023-12-16 07:21:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715618473] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 07:21:32,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 07:21:32,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-16 07:21:32,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893970275] [2023-12-16 07:21:32,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:32,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 07:21:32,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:32,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 07:21:32,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-16 07:21:32,994 INFO L87 Difference]: Start difference. First operand 156 states and 214 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:33,117 INFO L93 Difference]: Finished difference Result 244 states and 346 transitions. [2023-12-16 07:21:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 07:21:33,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-12-16 07:21:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:33,119 INFO L225 Difference]: With dead ends: 244 [2023-12-16 07:21:33,119 INFO L226 Difference]: Without dead ends: 208 [2023-12-16 07:21:33,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-16 07:21:33,120 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 38 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:33,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 283 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:21:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-16 07:21:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 191. [2023-12-16 07:21:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 169 states have (on average 1.319526627218935) internal successors, (223), 172 states have internal predecessors, (223), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (22), 19 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-16 07:21:33,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 262 transitions. [2023-12-16 07:21:33,126 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 262 transitions. Word has length 39 [2023-12-16 07:21:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:33,126 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 262 transitions. [2023-12-16 07:21:33,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 262 transitions. [2023-12-16 07:21:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 07:21:33,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:33,127 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-12-16 07:21:33,151 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:33,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:33,345 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:33,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:33,345 INFO L85 PathProgramCache]: Analyzing trace with hash 701653780, now seen corresponding path program 1 times [2023-12-16 07:21:33,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:33,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144971608] [2023-12-16 07:21:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:33,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:33,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:33,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:33,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 07:21:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:33,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 07:21:33,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:33,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:33,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:33,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144971608] [2023-12-16 07:21:33,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144971608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:33,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:33,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 07:21:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353836206] [2023-12-16 07:21:33,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 07:21:33,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 07:21:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:33,401 INFO L87 Difference]: Start difference. First operand 191 states and 262 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:33,425 INFO L93 Difference]: Finished difference Result 198 states and 268 transitions. [2023-12-16 07:21:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 07:21:33,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-12-16 07:21:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:33,441 INFO L225 Difference]: With dead ends: 198 [2023-12-16 07:21:33,441 INFO L226 Difference]: Without dead ends: 191 [2023-12-16 07:21:33,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:21:33,442 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 5 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:33,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 356 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-16 07:21:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-12-16 07:21:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 169 states have (on average 1.301775147928994) internal successors, (220), 172 states have internal predecessors, (220), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (22), 19 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-16 07:21:33,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 259 transitions. [2023-12-16 07:21:33,455 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 259 transitions. Word has length 39 [2023-12-16 07:21:33,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:33,456 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 259 transitions. [2023-12-16 07:21:33,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:33,456 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 259 transitions. [2023-12-16 07:21:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 07:21:33,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:33,456 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-12-16 07:21:33,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:33,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:33,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:33,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1960026152, now seen corresponding path program 1 times [2023-12-16 07:21:33,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:33,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561004036] [2023-12-16 07:21:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:33,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:33,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:33,661 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:33,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 07:21:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:33,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:21:33,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:33,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:33,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:33,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561004036] [2023-12-16 07:21:33,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561004036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:33,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:33,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:21:33,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821580218] [2023-12-16 07:21:33,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:33,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:21:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:21:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:21:33,716 INFO L87 Difference]: Start difference. First operand 191 states and 259 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:33,739 INFO L93 Difference]: Finished difference Result 324 states and 448 transitions. [2023-12-16 07:21:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 07:21:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-12-16 07:21:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:33,741 INFO L225 Difference]: With dead ends: 324 [2023-12-16 07:21:33,741 INFO L226 Difference]: Without dead ends: 272 [2023-12-16 07:21:33,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:33,742 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 76 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:33,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 295 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-16 07:21:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 208. [2023-12-16 07:21:33,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 185 states have (on average 1.308108108108108) internal successors, (242), 187 states have internal predecessors, (242), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2023-12-16 07:21:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 283 transitions. [2023-12-16 07:21:33,751 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 283 transitions. Word has length 40 [2023-12-16 07:21:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:33,752 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 283 transitions. [2023-12-16 07:21:33,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 283 transitions. [2023-12-16 07:21:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 07:21:33,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:33,753 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:33,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:33,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:33,956 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:33,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash 645595560, now seen corresponding path program 2 times [2023-12-16 07:21:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709665881] [2023-12-16 07:21:33,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:21:33,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:33,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:33,965 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:33,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 07:21:33,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 07:21:33,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:21:33,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 07:21:33,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:34,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:34,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:34,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709665881] [2023-12-16 07:21:34,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709665881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:34,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:34,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:21:34,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340011924] [2023-12-16 07:21:34,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:34,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:21:34,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:34,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:21:34,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:21:34,110 INFO L87 Difference]: Start difference. First operand 208 states and 283 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:35,369 INFO L93 Difference]: Finished difference Result 232 states and 315 transitions. [2023-12-16 07:21:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:21:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-12-16 07:21:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:35,371 INFO L225 Difference]: With dead ends: 232 [2023-12-16 07:21:35,371 INFO L226 Difference]: Without dead ends: 230 [2023-12-16 07:21:35,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:21:35,372 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 26 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:35,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 416 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 07:21:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-16 07:21:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 212. [2023-12-16 07:21:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 188 states have (on average 1.303191489361702) internal successors, (245), 190 states have internal predecessors, (245), 18 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2023-12-16 07:21:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 286 transitions. [2023-12-16 07:21:35,380 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 286 transitions. Word has length 40 [2023-12-16 07:21:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:35,380 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 286 transitions. [2023-12-16 07:21:35,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:35,381 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 286 transitions. [2023-12-16 07:21:35,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 07:21:35,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:35,381 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:35,384 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 [2023-12-16 07:21:35,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:35,583 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:35,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 702853862, now seen corresponding path program 1 times [2023-12-16 07:21:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23311788] [2023-12-16 07:21:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:35,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:35,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:35,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:35,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 07:21:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:35,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 07:21:35,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:35,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:21:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:35,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23311788] [2023-12-16 07:21:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23311788] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 07:21:35,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 07:21:35,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-12-16 07:21:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445787675] [2023-12-16 07:21:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:35,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:21:35,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:21:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:21:35,866 INFO L87 Difference]: Start difference. First operand 212 states and 286 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:35,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:35,971 INFO L93 Difference]: Finished difference Result 230 states and 306 transitions. [2023-12-16 07:21:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 07:21:35,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-12-16 07:21:35,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:35,972 INFO L225 Difference]: With dead ends: 230 [2023-12-16 07:21:35,972 INFO L226 Difference]: Without dead ends: 228 [2023-12-16 07:21:35,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-16 07:21:35,973 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 25 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:35,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 399 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:21:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-16 07:21:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 216. [2023-12-16 07:21:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 191 states have (on average 1.2984293193717278) internal successors, (248), 193 states have internal predecessors, (248), 18 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2023-12-16 07:21:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 289 transitions. [2023-12-16 07:21:35,982 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 289 transitions. Word has length 40 [2023-12-16 07:21:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:35,982 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 289 transitions. [2023-12-16 07:21:35,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:35,982 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 289 transitions. [2023-12-16 07:21:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 07:21:35,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:35,983 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:36,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-16 07:21:36,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:36,203 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:36,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:36,203 INFO L85 PathProgramCache]: Analyzing trace with hash -795813825, now seen corresponding path program 1 times [2023-12-16 07:21:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:36,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95857648] [2023-12-16 07:21:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:36,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:36,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:36,212 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:36,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 07:21:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:36,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:21:36,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:36,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:36,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:36,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95857648] [2023-12-16 07:21:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95857648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:36,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:36,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:21:36,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999703164] [2023-12-16 07:21:36,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:36,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:21:36,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:21:36,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:21:36,266 INFO L87 Difference]: Start difference. First operand 216 states and 289 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:36,286 INFO L93 Difference]: Finished difference Result 231 states and 305 transitions. [2023-12-16 07:21:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:21:36,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2023-12-16 07:21:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:36,295 INFO L225 Difference]: With dead ends: 231 [2023-12-16 07:21:36,295 INFO L226 Difference]: Without dead ends: 194 [2023-12-16 07:21:36,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:36,296 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:36,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 266 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:36,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-16 07:21:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-16 07:21:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 169 states have (on average 1.3136094674556213) internal successors, (222), 172 states have internal predecessors, (222), 18 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2023-12-16 07:21:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 261 transitions. [2023-12-16 07:21:36,304 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 261 transitions. Word has length 43 [2023-12-16 07:21:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:36,304 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 261 transitions. [2023-12-16 07:21:36,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:36,304 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 261 transitions. [2023-12-16 07:21:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 07:21:36,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:36,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:36,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:36,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:36,506 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:36,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:36,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1053756109, now seen corresponding path program 1 times [2023-12-16 07:21:36,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:36,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5996752] [2023-12-16 07:21:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:36,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:36,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:36,530 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:36,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 07:21:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:36,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:21:36,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:36,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:36,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:36,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5996752] [2023-12-16 07:21:36,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5996752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:36,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:36,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 07:21:36,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872040387] [2023-12-16 07:21:36,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:36,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 07:21:36,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:36,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 07:21:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:36,584 INFO L87 Difference]: Start difference. First operand 194 states and 261 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:36,662 INFO L93 Difference]: Finished difference Result 254 states and 344 transitions. [2023-12-16 07:21:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 07:21:36,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2023-12-16 07:21:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:36,663 INFO L225 Difference]: With dead ends: 254 [2023-12-16 07:21:36,663 INFO L226 Difference]: Without dead ends: 214 [2023-12-16 07:21:36,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:21:36,664 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 97 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:36,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 349 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:36,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-16 07:21:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 194. [2023-12-16 07:21:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 169 states have (on average 1.301775147928994) internal successors, (220), 172 states have internal predecessors, (220), 18 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2023-12-16 07:21:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 259 transitions. [2023-12-16 07:21:36,675 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 259 transitions. Word has length 44 [2023-12-16 07:21:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:36,675 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 259 transitions. [2023-12-16 07:21:36,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 259 transitions. [2023-12-16 07:21:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 07:21:36,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:36,676 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:36,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:36,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:36,879 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:36,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash 660729099, now seen corresponding path program 1 times [2023-12-16 07:21:36,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:36,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933697487] [2023-12-16 07:21:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:36,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:36,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:36,880 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:36,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 07:21:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:36,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 07:21:36,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:36,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:36,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:36,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933697487] [2023-12-16 07:21:36,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933697487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:36,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:36,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:21:36,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136711611] [2023-12-16 07:21:36,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:36,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:21:36,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:36,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:21:36,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:21:36,940 INFO L87 Difference]: Start difference. First operand 194 states and 259 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:37,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:37,013 INFO L93 Difference]: Finished difference Result 274 states and 363 transitions. [2023-12-16 07:21:37,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 07:21:37,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2023-12-16 07:21:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:37,015 INFO L225 Difference]: With dead ends: 274 [2023-12-16 07:21:37,015 INFO L226 Difference]: Without dead ends: 245 [2023-12-16 07:21:37,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:37,016 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 64 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:37,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 223 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:21:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-16 07:21:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 198. [2023-12-16 07:21:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 173 states have (on average 1.2947976878612717) internal successors, (224), 176 states have internal predecessors, (224), 18 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2023-12-16 07:21:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2023-12-16 07:21:37,024 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 44 [2023-12-16 07:21:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:37,025 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2023-12-16 07:21:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2023-12-16 07:21:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 07:21:37,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:37,026 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:37,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:37,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:37,229 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:37,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1173785422, now seen corresponding path program 1 times [2023-12-16 07:21:37,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:37,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243880522] [2023-12-16 07:21:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:37,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:37,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:37,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:37,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-16 07:21:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:37,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 07:21:37,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:37,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:37,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243880522] [2023-12-16 07:21:37,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243880522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:37,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:37,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:21:37,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991073943] [2023-12-16 07:21:37,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:37,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:21:37,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:37,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:21:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:21:37,326 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:37,426 INFO L93 Difference]: Finished difference Result 274 states and 372 transitions. [2023-12-16 07:21:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:21:37,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2023-12-16 07:21:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:37,427 INFO L225 Difference]: With dead ends: 274 [2023-12-16 07:21:37,427 INFO L226 Difference]: Without dead ends: 250 [2023-12-16 07:21:37,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:21:37,428 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 43 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:37,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 382 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:21:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-16 07:21:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2023-12-16 07:21:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 203 states have (on average 1.29064039408867) internal successors, (262), 207 states have internal predecessors, (262), 22 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (25), 23 states have call predecessors, (25), 21 states have call successors, (25) [2023-12-16 07:21:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2023-12-16 07:21:37,438 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 45 [2023-12-16 07:21:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:37,438 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2023-12-16 07:21:37,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2023-12-16 07:21:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 07:21:37,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:37,439 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:37,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-16 07:21:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:37,641 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:37,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1256313678, now seen corresponding path program 1 times [2023-12-16 07:21:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:37,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505931281] [2023-12-16 07:21:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:37,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:37,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:37,643 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:37,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 07:21:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:37,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:21:37,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:37,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:21:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 07:21:37,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505931281] [2023-12-16 07:21:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505931281] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:21:37,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:21:37,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-16 07:21:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835093695] [2023-12-16 07:21:37,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:21:37,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 07:21:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 07:21:37,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:21:37,784 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:37,858 INFO L93 Difference]: Finished difference Result 266 states and 348 transitions. [2023-12-16 07:21:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 07:21:37,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2023-12-16 07:21:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:37,859 INFO L225 Difference]: With dead ends: 266 [2023-12-16 07:21:37,859 INFO L226 Difference]: Without dead ends: 234 [2023-12-16 07:21:37,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-16 07:21:37,860 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 97 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:37,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 477 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:37,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-16 07:21:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 213. [2023-12-16 07:21:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 184 states have (on average 1.298913043478261) internal successors, (239), 188 states have internal predecessors, (239), 22 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (25), 23 states have call predecessors, (25), 21 states have call successors, (25) [2023-12-16 07:21:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 286 transitions. [2023-12-16 07:21:37,869 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 286 transitions. Word has length 45 [2023-12-16 07:21:37,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:37,870 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 286 transitions. [2023-12-16 07:21:37,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:21:37,870 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 286 transitions. [2023-12-16 07:21:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 07:21:37,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:37,870 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:37,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-16 07:21:38,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:38,073 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:38,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash 833611852, now seen corresponding path program 1 times [2023-12-16 07:21:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163934393] [2023-12-16 07:21:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:38,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:38,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:38,076 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:38,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 07:21:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:38,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:21:38,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:38,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:38,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163934393] [2023-12-16 07:21:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163934393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:38,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:38,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:21:38,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649648912] [2023-12-16 07:21:38,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:38,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:21:38,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:38,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:21:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:21:38,127 INFO L87 Difference]: Start difference. First operand 213 states and 286 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:38,159 INFO L93 Difference]: Finished difference Result 260 states and 342 transitions. [2023-12-16 07:21:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:21:38,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2023-12-16 07:21:38,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:38,162 INFO L225 Difference]: With dead ends: 260 [2023-12-16 07:21:38,162 INFO L226 Difference]: Without dead ends: 226 [2023-12-16 07:21:38,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:38,163 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 86 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:38,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 250 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-16 07:21:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 213. [2023-12-16 07:21:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 184 states have (on average 1.233695652173913) internal successors, (227), 188 states have internal predecessors, (227), 22 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (25), 23 states have call predecessors, (25), 21 states have call successors, (25) [2023-12-16 07:21:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions. [2023-12-16 07:21:38,181 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 45 [2023-12-16 07:21:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:38,181 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions. [2023-12-16 07:21:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions. [2023-12-16 07:21:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 07:21:38,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:38,181 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:38,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:38,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:38,399 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:38,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:38,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2070421974, now seen corresponding path program 1 times [2023-12-16 07:21:38,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:38,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369369190] [2023-12-16 07:21:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:38,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:38,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:38,401 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:38,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 07:21:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:38,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:21:38,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:38,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:38,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:38,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369369190] [2023-12-16 07:21:38,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369369190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:38,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:38,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:21:38,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642102689] [2023-12-16 07:21:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:38,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:21:38,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:38,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:21:38,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:21:38,443 INFO L87 Difference]: Start difference. First operand 213 states and 274 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:38,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:38,462 INFO L93 Difference]: Finished difference Result 222 states and 282 transitions. [2023-12-16 07:21:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:21:38,463 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2023-12-16 07:21:38,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:38,464 INFO L225 Difference]: With dead ends: 222 [2023-12-16 07:21:38,464 INFO L226 Difference]: Without dead ends: 183 [2023-12-16 07:21:38,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:38,464 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:38,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 263 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-16 07:21:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2023-12-16 07:21:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 147 states have (on average 1.2448979591836735) internal successors, (183), 153 states have internal predecessors, (183), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2023-12-16 07:21:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 221 transitions. [2023-12-16 07:21:38,472 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 221 transitions. Word has length 47 [2023-12-16 07:21:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:38,472 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 221 transitions. [2023-12-16 07:21:38,472 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 221 transitions. [2023-12-16 07:21:38,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 07:21:38,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:38,473 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:38,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:38,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:38,676 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:38,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:38,676 INFO L85 PathProgramCache]: Analyzing trace with hash 322717964, now seen corresponding path program 1 times [2023-12-16 07:21:38,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:38,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893510068] [2023-12-16 07:21:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:38,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:38,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:38,678 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:38,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 07:21:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:38,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:21:38,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:21:38,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:38,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:38,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893510068] [2023-12-16 07:21:38,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893510068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:38,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:38,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 07:21:38,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467201635] [2023-12-16 07:21:38,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:38,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 07:21:38,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:38,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 07:21:38,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:21:38,742 INFO L87 Difference]: Start difference. First operand 173 states and 221 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:38,833 INFO L93 Difference]: Finished difference Result 221 states and 286 transitions. [2023-12-16 07:21:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 07:21:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2023-12-16 07:21:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:38,834 INFO L225 Difference]: With dead ends: 221 [2023-12-16 07:21:38,834 INFO L226 Difference]: Without dead ends: 175 [2023-12-16 07:21:38,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:21:38,835 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 21 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:38,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 350 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:21:38,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-16 07:21:38,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 150. [2023-12-16 07:21:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 124 states have (on average 1.2661290322580645) internal successors, (157), 130 states have internal predecessors, (157), 20 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 07:21:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 195 transitions. [2023-12-16 07:21:38,843 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 195 transitions. Word has length 47 [2023-12-16 07:21:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:38,843 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 195 transitions. [2023-12-16 07:21:38,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:21:38,843 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 195 transitions. [2023-12-16 07:21:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 07:21:38,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:38,844 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:38,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:39,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:39,048 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:39,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash 914926325, now seen corresponding path program 1 times [2023-12-16 07:21:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:39,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682891519] [2023-12-16 07:21:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:39,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:39,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:39,049 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:39,096 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 (22)] Waiting until timeout for monitored process [2023-12-16 07:21:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:39,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 07:21:39,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:40,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:40,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:40,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682891519] [2023-12-16 07:21:40,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682891519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:40,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:40,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 07:21:40,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163913533] [2023-12-16 07:21:40,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:40,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 07:21:40,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:40,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 07:21:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:21:40,008 INFO L87 Difference]: Start difference. First operand 150 states and 195 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:21:42,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 07:21:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:43,173 INFO L93 Difference]: Finished difference Result 165 states and 212 transitions. [2023-12-16 07:21:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 07:21:43,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2023-12-16 07:21:43,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:43,174 INFO L225 Difference]: With dead ends: 165 [2023-12-16 07:21:43,174 INFO L226 Difference]: Without dead ends: 163 [2023-12-16 07:21:43,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 07:21:43,175 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 9 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:43,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 306 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 07:21:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-16 07:21:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 157. [2023-12-16 07:21:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 127 states have (on average 1.2598425196850394) internal successors, (160), 136 states have internal predecessors, (160), 23 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 16 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-16 07:21:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2023-12-16 07:21:43,185 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 50 [2023-12-16 07:21:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:43,186 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2023-12-16 07:21:43,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:21:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2023-12-16 07:21:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 07:21:43,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:43,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:43,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:43,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:43,390 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:43,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:43,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2015488813, now seen corresponding path program 1 times [2023-12-16 07:21:43,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:43,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512832807] [2023-12-16 07:21:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:43,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:43,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:43,392 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:43,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 07:21:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:43,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 07:21:43,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:49,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:49,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512832807] [2023-12-16 07:21:49,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512832807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:49,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:49,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 07:21:49,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673686271] [2023-12-16 07:21:49,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:49,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 07:21:49,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:49,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 07:21:49,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:21:49,379 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:21:53,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 07:21:53,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:53,229 INFO L93 Difference]: Finished difference Result 169 states and 215 transitions. [2023-12-16 07:21:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 07:21:53,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2023-12-16 07:21:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:53,230 INFO L225 Difference]: With dead ends: 169 [2023-12-16 07:21:53,230 INFO L226 Difference]: Without dead ends: 167 [2023-12-16 07:21:53,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 07:21:53,230 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 8 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:53,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 461 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 07:21:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-16 07:21:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 154. [2023-12-16 07:21:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 127 states have (on average 1.2598425196850394) internal successors, (160), 133 states have internal predecessors, (160), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 07:21:53,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 198 transitions. [2023-12-16 07:21:53,239 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 198 transitions. Word has length 51 [2023-12-16 07:21:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:53,239 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 198 transitions. [2023-12-16 07:21:53,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:21:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 198 transitions. [2023-12-16 07:21:53,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 07:21:53,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:53,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:53,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:53,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:53,442 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:53,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash -53360271, now seen corresponding path program 1 times [2023-12-16 07:21:53,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:53,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095828220] [2023-12-16 07:21:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:53,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:53,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:53,444 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:53,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-16 07:21:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:53,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 07:21:53,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:53,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:53,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:53,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095828220] [2023-12-16 07:21:53,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095828220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:53,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:53,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 07:21:53,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949139259] [2023-12-16 07:21:53,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:53,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 07:21:53,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 07:21:53,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-16 07:21:53,752 INFO L87 Difference]: Start difference. First operand 154 states and 198 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:21:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:54,324 INFO L93 Difference]: Finished difference Result 191 states and 244 transitions. [2023-12-16 07:21:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 07:21:54,325 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2023-12-16 07:21:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:54,325 INFO L225 Difference]: With dead ends: 191 [2023-12-16 07:21:54,326 INFO L226 Difference]: Without dead ends: 179 [2023-12-16 07:21:54,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-12-16 07:21:54,326 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 44 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:54,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 764 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 07:21:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-16 07:21:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 154. [2023-12-16 07:21:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 133 states have internal predecessors, (158), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 07:21:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 196 transitions. [2023-12-16 07:21:54,335 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 196 transitions. Word has length 53 [2023-12-16 07:21:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:54,336 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 196 transitions. [2023-12-16 07:21:54,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:21:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 196 transitions. [2023-12-16 07:21:54,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 07:21:54,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:54,336 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:54,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:54,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:54,539 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:54,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:54,539 INFO L85 PathProgramCache]: Analyzing trace with hash -955350985, now seen corresponding path program 1 times [2023-12-16 07:21:54,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:54,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637763050] [2023-12-16 07:21:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:54,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:54,541 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:21:54,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-16 07:21:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:54,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 07:21:54,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:54,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:54,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:54,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637763050] [2023-12-16 07:21:54,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637763050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:54,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:54,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:21:54,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693715948] [2023-12-16 07:21:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:54,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:21:54,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:54,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:21:54,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:21:54,602 INFO L87 Difference]: Start difference. First operand 154 states and 196 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 07:21:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:54,651 INFO L93 Difference]: Finished difference Result 173 states and 216 transitions. [2023-12-16 07:21:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:21:54,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2023-12-16 07:21:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:54,652 INFO L225 Difference]: With dead ends: 173 [2023-12-16 07:21:54,652 INFO L226 Difference]: Without dead ends: 171 [2023-12-16 07:21:54,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:21:54,653 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 40 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:54,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 471 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-16 07:21:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2023-12-16 07:21:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 130 states have (on average 1.2384615384615385) internal successors, (161), 136 states have internal predecessors, (161), 20 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 07:21:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 199 transitions. [2023-12-16 07:21:54,676 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 199 transitions. Word has length 55 [2023-12-16 07:21:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:54,676 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 199 transitions. [2023-12-16 07:21:54,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 07:21:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 199 transitions. [2023-12-16 07:21:54,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 07:21:54,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:54,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:54,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-16 07:21:54,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:54,880 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:54,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:54,881 INFO L85 PathProgramCache]: Analyzing trace with hash -980561674, now seen corresponding path program 1 times [2023-12-16 07:21:54,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:54,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438538272] [2023-12-16 07:21:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:54,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:54,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:54,883 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) [2023-12-16 07:21:54,889 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 [2023-12-16 07:21:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:54,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 07:21:54,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:55,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:55,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:55,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438538272] [2023-12-16 07:21:55,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438538272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:55,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:55,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-16 07:21:55,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020729251] [2023-12-16 07:21:55,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:55,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 07:21:55,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:55,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 07:21:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 07:21:55,135 INFO L87 Difference]: Start difference. First operand 158 states and 199 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:21:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:55,845 INFO L93 Difference]: Finished difference Result 266 states and 341 transitions. [2023-12-16 07:21:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 07:21:55,846 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2023-12-16 07:21:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:55,847 INFO L225 Difference]: With dead ends: 266 [2023-12-16 07:21:55,847 INFO L226 Difference]: Without dead ends: 237 [2023-12-16 07:21:55,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-12-16 07:21:55,848 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 65 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:55,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 711 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 07:21:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-16 07:21:55,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 185. [2023-12-16 07:21:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 154 states have (on average 1.2207792207792207) internal successors, (188), 161 states have internal predecessors, (188), 23 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-16 07:21:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 232 transitions. [2023-12-16 07:21:55,860 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 232 transitions. Word has length 55 [2023-12-16 07:21:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:55,860 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 232 transitions. [2023-12-16 07:21:55,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:21:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 232 transitions. [2023-12-16 07:21:55,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 07:21:55,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:55,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:55,867 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 [2023-12-16 07:21:56,066 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 [2023-12-16 07:21:56,067 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:56,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:56,067 INFO L85 PathProgramCache]: Analyzing trace with hash -475390857, now seen corresponding path program 1 times [2023-12-16 07:21:56,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:56,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957691771] [2023-12-16 07:21:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:56,067 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 [2023-12-16 07:21:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:56,068 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) [2023-12-16 07:21:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:56,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-16 07:21:56,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 07:21:56,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:21:56,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:56,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:56,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957691771] [2023-12-16 07:21:56,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957691771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:56,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:56,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:21:56,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458011764] [2023-12-16 07:21:56,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:56,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:21:56,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:56,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:21:56,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:21:56,145 INFO L87 Difference]: Start difference. First operand 185 states and 232 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 07:21:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:21:56,202 INFO L93 Difference]: Finished difference Result 207 states and 258 transitions. [2023-12-16 07:21:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:21:56,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2023-12-16 07:21:56,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:21:56,203 INFO L225 Difference]: With dead ends: 207 [2023-12-16 07:21:56,203 INFO L226 Difference]: Without dead ends: 205 [2023-12-16 07:21:56,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:21:56,204 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 34 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:21:56,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 471 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:21:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-16 07:21:56,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 190. [2023-12-16 07:21:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 157 states have (on average 1.21656050955414) internal successors, (191), 165 states have internal predecessors, (191), 24 states have call successors, (24), 7 states have call predecessors, (24), 8 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 07:21:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2023-12-16 07:21:56,232 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 55 [2023-12-16 07:21:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:21:56,233 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2023-12-16 07:21:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 07:21:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2023-12-16 07:21:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 07:21:56,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:21:56,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:21:56,246 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 [2023-12-16 07:21:56,438 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 [2023-12-16 07:21:56,438 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:21:56,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:21:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash 950980566, now seen corresponding path program 1 times [2023-12-16 07:21:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:21:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226357550] [2023-12-16 07:21:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:21:56,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:21:56,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:21:56,440 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) [2023-12-16 07:21:56,442 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 [2023-12-16 07:21:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:21:56,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 07:21:56,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:21:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 07:21:57,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:21:57,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:21:57,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226357550] [2023-12-16 07:21:57,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226357550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:21:57,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:21:57,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 07:21:57,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715373335] [2023-12-16 07:21:57,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:21:57,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 07:21:57,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:21:57,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 07:21:57,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-16 07:21:57,134 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:00,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:00,104 INFO L93 Difference]: Finished difference Result 277 states and 349 transitions. [2023-12-16 07:22:00,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 07:22:00,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 60 [2023-12-16 07:22:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:00,106 INFO L225 Difference]: With dead ends: 277 [2023-12-16 07:22:00,106 INFO L226 Difference]: Without dead ends: 251 [2023-12-16 07:22:00,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-16 07:22:00,107 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 53 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:00,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 899 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 07:22:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-16 07:22:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 216. [2023-12-16 07:22:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 179 states have (on average 1.217877094972067) internal successors, (218), 187 states have internal predecessors, (218), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 07:22:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 272 transitions. [2023-12-16 07:22:00,125 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 272 transitions. Word has length 60 [2023-12-16 07:22:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:00,125 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 272 transitions. [2023-12-16 07:22:00,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 272 transitions. [2023-12-16 07:22:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 07:22:00,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:00,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:00,132 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 [2023-12-16 07:22:00,329 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 [2023-12-16 07:22:00,330 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:00,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1013020180, now seen corresponding path program 1 times [2023-12-16 07:22:00,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:00,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163132820] [2023-12-16 07:22:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:00,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:00,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:00,332 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) [2023-12-16 07:22:00,367 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 [2023-12-16 07:22:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:00,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 07:22:00,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 07:22:00,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:00,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:00,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163132820] [2023-12-16 07:22:00,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163132820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:00,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:00,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 07:22:00,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135414319] [2023-12-16 07:22:00,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:00,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 07:22:00,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:00,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 07:22:00,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 07:22:00,627 INFO L87 Difference]: Start difference. First operand 216 states and 272 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:04,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 07:22:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:05,404 INFO L93 Difference]: Finished difference Result 303 states and 387 transitions. [2023-12-16 07:22:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:22:05,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 60 [2023-12-16 07:22:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:05,406 INFO L225 Difference]: With dead ends: 303 [2023-12-16 07:22:05,406 INFO L226 Difference]: Without dead ends: 280 [2023-12-16 07:22:05,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-16 07:22:05,406 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 40 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:05,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 505 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2023-12-16 07:22:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-16 07:22:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 218. [2023-12-16 07:22:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 180 states have (on average 1.2222222222222223) internal successors, (220), 189 states have internal predecessors, (220), 29 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-16 07:22:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 276 transitions. [2023-12-16 07:22:05,422 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 276 transitions. Word has length 60 [2023-12-16 07:22:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:05,422 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 276 transitions. [2023-12-16 07:22:05,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 276 transitions. [2023-12-16 07:22:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 07:22:05,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:05,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-16 07:22:05,428 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 [2023-12-16 07:22:05,625 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 [2023-12-16 07:22:05,626 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:05,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1541864464, now seen corresponding path program 1 times [2023-12-16 07:22:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464759029] [2023-12-16 07:22:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:05,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:05,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:05,628 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) [2023-12-16 07:22:05,655 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 [2023-12-16 07:22:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:05,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 07:22:05,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 07:22:06,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:22:06,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:06,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464759029] [2023-12-16 07:22:06,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464759029] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 07:22:06,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1363842888] [2023-12-16 07:22:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:06,626 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 07:22:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 07:22:06,732 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 07:22:06,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-16 07:22:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:06,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 07:22:06,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 07:22:08,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:08,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1363842888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:08,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 07:22:08,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 20 [2023-12-16 07:22:08,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713570170] [2023-12-16 07:22:08,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:08,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 07:22:08,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:08,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 07:22:08,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2023-12-16 07:22:08,485 INFO L87 Difference]: Start difference. First operand 218 states and 276 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:11,021 INFO L93 Difference]: Finished difference Result 301 states and 382 transitions. [2023-12-16 07:22:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:22:11,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 61 [2023-12-16 07:22:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:11,023 INFO L225 Difference]: With dead ends: 301 [2023-12-16 07:22:11,023 INFO L226 Difference]: Without dead ends: 275 [2023-12-16 07:22:11,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2023-12-16 07:22:11,024 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 69 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:11,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 777 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 07:22:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-16 07:22:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2023-12-16 07:22:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 195 states have internal predecessors, (230), 29 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-16 07:22:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 286 transitions. [2023-12-16 07:22:11,054 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 286 transitions. Word has length 61 [2023-12-16 07:22:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:11,054 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 286 transitions. [2023-12-16 07:22:11,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 286 transitions. [2023-12-16 07:22:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 07:22:11,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:11,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-16 07:22:11,060 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 [2023-12-16 07:22:11,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:11,456 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=3,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 07:22:11,456 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:11,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:11,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1852901820, now seen corresponding path program 1 times [2023-12-16 07:22:11,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:11,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076635469] [2023-12-16 07:22:11,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:11,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:11,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:11,458 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) [2023-12-16 07:22:11,462 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 [2023-12-16 07:22:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:11,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 07:22:11,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 07:22:11,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:11,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076635469] [2023-12-16 07:22:11,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076635469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:11,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:11,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-16 07:22:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838904237] [2023-12-16 07:22:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 07:22:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 07:22:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-16 07:22:11,994 INFO L87 Difference]: Start difference. First operand 225 states and 286 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:12,882 INFO L93 Difference]: Finished difference Result 254 states and 321 transitions. [2023-12-16 07:22:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:22:12,882 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 61 [2023-12-16 07:22:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:12,883 INFO L225 Difference]: With dead ends: 254 [2023-12-16 07:22:12,883 INFO L226 Difference]: Without dead ends: 246 [2023-12-16 07:22:12,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:22:12,884 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 28 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:12,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 648 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 07:22:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-16 07:22:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 229. [2023-12-16 07:22:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 190 states have (on average 1.2263157894736842) internal successors, (233), 198 states have internal predecessors, (233), 30 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-16 07:22:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 291 transitions. [2023-12-16 07:22:12,900 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 291 transitions. Word has length 61 [2023-12-16 07:22:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:12,900 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 291 transitions. [2023-12-16 07:22:12,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 291 transitions. [2023-12-16 07:22:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 07:22:12,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:12,901 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-16 07:22:12,904 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 [2023-12-16 07:22:13,103 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 [2023-12-16 07:22:13,104 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:13,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash 381363570, now seen corresponding path program 1 times [2023-12-16 07:22:13,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:13,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420238919] [2023-12-16 07:22:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:13,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:13,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:13,106 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) [2023-12-16 07:22:13,144 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 [2023-12-16 07:22:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:13,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 07:22:13,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 07:22:13,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:13,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:13,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420238919] [2023-12-16 07:22:13,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420238919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:13,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:13,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 07:22:13,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899122905] [2023-12-16 07:22:13,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:13,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 07:22:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 07:22:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:22:13,245 INFO L87 Difference]: Start difference. First operand 229 states and 291 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:13,540 INFO L93 Difference]: Finished difference Result 274 states and 341 transitions. [2023-12-16 07:22:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 07:22:13,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 61 [2023-12-16 07:22:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:13,542 INFO L225 Difference]: With dead ends: 274 [2023-12-16 07:22:13,542 INFO L226 Difference]: Without dead ends: 248 [2023-12-16 07:22:13,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-16 07:22:13,542 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 39 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:13,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 546 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:22:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-16 07:22:13,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 191. [2023-12-16 07:22:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 159 states have (on average 1.20125786163522) internal successors, (191), 166 states have internal predecessors, (191), 23 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-16 07:22:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 235 transitions. [2023-12-16 07:22:13,557 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 235 transitions. Word has length 61 [2023-12-16 07:22:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:13,557 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 235 transitions. [2023-12-16 07:22:13,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 07:22:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 235 transitions. [2023-12-16 07:22:13,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 07:22:13,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:13,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:13,561 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 (33)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:13,761 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 [2023-12-16 07:22:13,761 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:13,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash 97525126, now seen corresponding path program 1 times [2023-12-16 07:22:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236208659] [2023-12-16 07:22:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:13,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:13,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:13,763 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) [2023-12-16 07:22:13,790 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 [2023-12-16 07:22:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:13,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 07:22:13,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:22:13,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:22:14,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236208659] [2023-12-16 07:22:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236208659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 07:22:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1093717858] [2023-12-16 07:22:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:14,228 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 07:22:14,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 07:22:14,229 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 07:22:14,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-16 07:22:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:14,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 07:22:14,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 07:22:14,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:22:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:22:14,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1093717858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:22:14,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 07:22:14,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 12 [2023-12-16 07:22:14,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447745551] [2023-12-16 07:22:14,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 07:22:14,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 07:22:14,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:14,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 07:22:14,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-12-16 07:22:14,379 INFO L87 Difference]: Start difference. First operand 191 states and 235 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:14,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:14,603 INFO L93 Difference]: Finished difference Result 223 states and 264 transitions. [2023-12-16 07:22:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:22:14,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 62 [2023-12-16 07:22:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:14,604 INFO L225 Difference]: With dead ends: 223 [2023-12-16 07:22:14,604 INFO L226 Difference]: Without dead ends: 167 [2023-12-16 07:22:14,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2023-12-16 07:22:14,605 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 59 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:14,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 733 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:22:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-16 07:22:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-12-16 07:22:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 138 states have (on average 1.1956521739130435) internal successors, (165), 144 states have internal predecessors, (165), 20 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 07:22:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 203 transitions. [2023-12-16 07:22:14,616 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 203 transitions. Word has length 62 [2023-12-16 07:22:14,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:14,616 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 203 transitions. [2023-12-16 07:22:14,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:14,616 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 203 transitions. [2023-12-16 07:22:14,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 07:22:14,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:14,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:14,619 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 [2023-12-16 07:22:14,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:15,020 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=3,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 07:22:15,021 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:15,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash 595751560, now seen corresponding path program 1 times [2023-12-16 07:22:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557416311] [2023-12-16 07:22:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:15,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:15,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:15,022 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) [2023-12-16 07:22:15,024 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 [2023-12-16 07:22:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:15,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 07:22:15,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 07:22:15,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:15,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:15,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557416311] [2023-12-16 07:22:15,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557416311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:15,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:15,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:22:15,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272521735] [2023-12-16 07:22:15,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:15,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:22:15,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:15,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:22:15,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:22:15,126 INFO L87 Difference]: Start difference. First operand 167 states and 203 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 07:22:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:15,212 INFO L93 Difference]: Finished difference Result 197 states and 235 transitions. [2023-12-16 07:22:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:22:15,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2023-12-16 07:22:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:15,214 INFO L225 Difference]: With dead ends: 197 [2023-12-16 07:22:15,214 INFO L226 Difference]: Without dead ends: 184 [2023-12-16 07:22:15,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:22:15,215 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 28 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:15,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 433 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:22:15,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-16 07:22:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 162. [2023-12-16 07:22:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 140 states have internal predecessors, (157), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 07:22:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 195 transitions. [2023-12-16 07:22:15,235 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 195 transitions. Word has length 63 [2023-12-16 07:22:15,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:15,236 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 195 transitions. [2023-12-16 07:22:15,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 07:22:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 195 transitions. [2023-12-16 07:22:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 07:22:15,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:15,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:15,243 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 [2023-12-16 07:22:15,441 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 [2023-12-16 07:22:15,441 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:15,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash 913579402, now seen corresponding path program 1 times [2023-12-16 07:22:15,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:15,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555671982] [2023-12-16 07:22:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:15,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:15,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:15,444 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) [2023-12-16 07:22:15,456 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 [2023-12-16 07:22:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:15,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 07:22:15,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 07:22:15,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:15,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555671982] [2023-12-16 07:22:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555671982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:22:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176845223] [2023-12-16 07:22:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:15,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:22:15,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:22:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:22:15,524 INFO L87 Difference]: Start difference. First operand 162 states and 195 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 07:22:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:15,608 INFO L93 Difference]: Finished difference Result 188 states and 222 transitions. [2023-12-16 07:22:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:22:15,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2023-12-16 07:22:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:15,609 INFO L225 Difference]: With dead ends: 188 [2023-12-16 07:22:15,609 INFO L226 Difference]: Without dead ends: 175 [2023-12-16 07:22:15,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:22:15,609 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 28 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:15,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 433 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:22:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-16 07:22:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 149. [2023-12-16 07:22:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 121 states have (on average 1.1818181818181819) internal successors, (143), 128 states have internal predecessors, (143), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 07:22:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2023-12-16 07:22:15,621 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 63 [2023-12-16 07:22:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:15,621 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2023-12-16 07:22:15,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 07:22:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2023-12-16 07:22:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 07:22:15,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:15,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:15,627 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 [2023-12-16 07:22:15,825 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 [2023-12-16 07:22:15,825 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:15,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:15,825 INFO L85 PathProgramCache]: Analyzing trace with hash 304088456, now seen corresponding path program 1 times [2023-12-16 07:22:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:15,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323905502] [2023-12-16 07:22:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:15,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:15,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:15,826 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) [2023-12-16 07:22:15,853 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 [2023-12-16 07:22:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:15,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:22:15,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:22:15,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:15,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:15,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323905502] [2023-12-16 07:22:15,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323905502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:15,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:15,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:22:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265591442] [2023-12-16 07:22:15,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:15,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:22:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:22:15,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:22:15,903 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:22:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:15,948 INFO L93 Difference]: Finished difference Result 177 states and 205 transitions. [2023-12-16 07:22:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:22:15,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2023-12-16 07:22:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:15,949 INFO L225 Difference]: With dead ends: 177 [2023-12-16 07:22:15,949 INFO L226 Difference]: Without dead ends: 129 [2023-12-16 07:22:15,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:22:15,950 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 42 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:15,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 225 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:22:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-16 07:22:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2023-12-16 07:22:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 104 states have internal predecessors, (115), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 07:22:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2023-12-16 07:22:15,960 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 64 [2023-12-16 07:22:15,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:15,960 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2023-12-16 07:22:15,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:22:15,960 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2023-12-16 07:22:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 07:22:15,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:15,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:15,966 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 (38)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:16,168 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 [2023-12-16 07:22:16,169 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:16,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash 231701898, now seen corresponding path program 1 times [2023-12-16 07:22:16,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:16,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665961468] [2023-12-16 07:22:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:16,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:16,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:16,170 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) [2023-12-16 07:22:16,197 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 [2023-12-16 07:22:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:16,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 07:22:16,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:22:16,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:22:16,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665961468] [2023-12-16 07:22:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665961468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 07:22:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [82606877] [2023-12-16 07:22:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:16,461 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 07:22:16,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 07:22:16,462 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 07:22:16,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2023-12-16 07:22:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:16,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 07:22:16,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 07:22:16,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [82606877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:16,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 07:22:16,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-16 07:22:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133398670] [2023-12-16 07:22:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:16,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 07:22:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 07:22:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-16 07:22:16,623 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:22:16,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:16,814 INFO L93 Difference]: Finished difference Result 169 states and 189 transitions. [2023-12-16 07:22:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:22:16,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2023-12-16 07:22:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:16,815 INFO L225 Difference]: With dead ends: 169 [2023-12-16 07:22:16,816 INFO L226 Difference]: Without dead ends: 123 [2023-12-16 07:22:16,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2023-12-16 07:22:16,816 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 85 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:16,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 221 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:22:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-16 07:22:16,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2023-12-16 07:22:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.13) internal successors, (113), 102 states have internal predecessors, (113), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 07:22:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 135 transitions. [2023-12-16 07:22:16,843 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 135 transitions. Word has length 64 [2023-12-16 07:22:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:16,843 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 135 transitions. [2023-12-16 07:22:16,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 07:22:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 135 transitions. [2023-12-16 07:22:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 07:22:16,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:16,844 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:16,849 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 (39)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:17,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:17,245 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=3,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 07:22:17,245 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:17,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 254334152, now seen corresponding path program 1 times [2023-12-16 07:22:17,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:17,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075993790] [2023-12-16 07:22:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:17,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:17,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:17,247 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) [2023-12-16 07:22:17,248 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 [2023-12-16 07:22:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:17,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 07:22:17,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:22:17,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:22:17,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075993790] [2023-12-16 07:22:17,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075993790] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 07:22:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [487044577] [2023-12-16 07:22:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 07:22:17,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 07:22:17,711 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 07:22:17,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2023-12-16 07:22:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:17,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 07:22:17,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 07:22:17,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:22:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:22:17,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [487044577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:22:17,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 07:22:17,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 11 [2023-12-16 07:22:17,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734775267] [2023-12-16 07:22:17,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 07:22:17,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 07:22:17,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:17,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 07:22:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-16 07:22:17,852 INFO L87 Difference]: Start difference. First operand 119 states and 135 transitions. Second operand has 11 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:18,073 INFO L93 Difference]: Finished difference Result 131 states and 144 transitions. [2023-12-16 07:22:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 07:22:18,073 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 64 [2023-12-16 07:22:18,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:18,074 INFO L225 Difference]: With dead ends: 131 [2023-12-16 07:22:18,074 INFO L226 Difference]: Without dead ends: 82 [2023-12-16 07:22:18,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-16 07:22:18,075 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 26 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:18,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 513 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:22:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-16 07:22:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-16 07:22:18,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 67 states have internal predecessors, (75), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 07:22:18,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2023-12-16 07:22:18,081 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 64 [2023-12-16 07:22:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:18,081 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2023-12-16 07:22:18,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:18,081 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2023-12-16 07:22:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 07:22:18,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:18,082 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:18,084 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 (41)] Ended with exit code 0 [2023-12-16 07:22:18,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:18,482 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=3,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 07:22:18,482 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:18,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash 939547497, now seen corresponding path program 1 times [2023-12-16 07:22:18,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:18,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525430267] [2023-12-16 07:22:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:18,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:18,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:18,484 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) [2023-12-16 07:22:18,486 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 [2023-12-16 07:22:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:18,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 07:22:18,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 07:22:18,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:18,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:18,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525430267] [2023-12-16 07:22:18,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525430267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:18,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:18,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 07:22:18,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351240182] [2023-12-16 07:22:18,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:18,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 07:22:18,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 07:22:18,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-16 07:22:18,899 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:23,416 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2023-12-16 07:22:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:22:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-12-16 07:22:23,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:23,417 INFO L225 Difference]: With dead ends: 101 [2023-12-16 07:22:23,417 INFO L226 Difference]: Without dead ends: 86 [2023-12-16 07:22:23,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=54, Invalid=155, Unknown=1, NotChecked=0, Total=210 [2023-12-16 07:22:23,420 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 21 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:23,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 380 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 07:22:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-16 07:22:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2023-12-16 07:22:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 66 states have (on average 1.121212121212121) internal successors, (74), 67 states have internal predecessors, (74), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 07:22:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2023-12-16 07:22:23,427 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 68 [2023-12-16 07:22:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:23,428 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2023-12-16 07:22:23,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2023-12-16 07:22:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 07:22:23,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:23,428 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:23,443 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 (43)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:23,632 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 [2023-12-16 07:22:23,632 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:23,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1304435801, now seen corresponding path program 1 times [2023-12-16 07:22:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:23,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342650944] [2023-12-16 07:22:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:23,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:23,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:23,649 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) [2023-12-16 07:22:23,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-16 07:22:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:23,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 07:22:23,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 07:22:24,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:24,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:24,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342650944] [2023-12-16 07:22:24,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342650944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:24,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:24,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-16 07:22:24,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987790364] [2023-12-16 07:22:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:24,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 07:22:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 07:22:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-16 07:22:24,626 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:26,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:26,390 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2023-12-16 07:22:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 07:22:26,390 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-12-16 07:22:26,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:26,391 INFO L225 Difference]: With dead ends: 97 [2023-12-16 07:22:26,391 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 07:22:26,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-16 07:22:26,391 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 27 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:26,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 531 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 07:22:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 07:22:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2023-12-16 07:22:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 07:22:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2023-12-16 07:22:26,397 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 68 [2023-12-16 07:22:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:26,397 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2023-12-16 07:22:26,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2023-12-16 07:22:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 07:22:26,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:26,398 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:26,414 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 [2023-12-16 07:22:26,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:26,602 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:26,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:26,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1897278077, now seen corresponding path program 1 times [2023-12-16 07:22:26,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:26,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139455787] [2023-12-16 07:22:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:26,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:26,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:26,604 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:22:26,655 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 (45)] Waiting until timeout for monitored process [2023-12-16 07:22:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:26,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 07:22:26,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 07:22:27,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:27,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:27,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139455787] [2023-12-16 07:22:27,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139455787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:27,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:27,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-16 07:22:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790470090] [2023-12-16 07:22:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:27,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 07:22:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 07:22:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-16 07:22:27,048 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:27,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:27,718 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2023-12-16 07:22:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 07:22:27,718 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 69 [2023-12-16 07:22:27,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:27,720 INFO L225 Difference]: With dead ends: 87 [2023-12-16 07:22:27,720 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 07:22:27,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-12-16 07:22:27,721 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 29 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:27,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 466 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 07:22:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 07:22:27,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-16 07:22:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 52 states have internal predecessors, (56), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 07:22:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2023-12-16 07:22:27,728 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 69 [2023-12-16 07:22:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:27,729 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2023-12-16 07:22:27,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2023-12-16 07:22:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 07:22:27,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:22:27,730 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:22:27,753 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 (45)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:27,934 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:22:27,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:22:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1553683717, now seen corresponding path program 1 times [2023-12-16 07:22:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:22:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343257019] [2023-12-16 07:22:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:22:27,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:27,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:22:27,935 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:22:27,937 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 (46)] Waiting until timeout for monitored process [2023-12-16 07:22:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:22:27,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 07:22:27,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:22:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 07:22:28,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:22:28,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:22:28,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343257019] [2023-12-16 07:22:28,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343257019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:22:28,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:22:28,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-16 07:22:28,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815478375] [2023-12-16 07:22:28,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:22:28,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 07:22:28,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:22:28,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 07:22:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-16 07:22:28,965 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:22:29,964 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2023-12-16 07:22:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 07:22:29,964 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 69 [2023-12-16 07:22:29,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:22:29,964 INFO L225 Difference]: With dead ends: 64 [2023-12-16 07:22:29,965 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 07:22:29,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-12-16 07:22:29,965 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 07:22:29,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 412 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 07:22:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 07:22:29,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 07:22:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:22:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 07:22:29,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2023-12-16 07:22:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:22:29,966 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 07:22:29,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:22:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 07:22:29,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 07:22:29,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 07:22:29,977 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 (46)] Forceful destruction successful, exit code 0 [2023-12-16 07:22:30,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:22:30,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-16 07:22:47,196 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-4-15-3-6-4-9-4-9-4-9-4-5-4-6-4-6-2-6-2-6-2-6-2-6-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-40-15-7-9-7-9-7-9-6-9-5-9-3-9-2-9-2-6-2-6-2-2-1 context. [2023-12-16 07:22:47,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 07:22:47,198 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-16 07:22:47,200 INFO L158 Benchmark]: Toolchain (without parser) took 78464.97ms. Allocated memory was 177.2MB in the beginning and 728.8MB in the end (delta: 551.6MB). Free memory was 139.7MB in the beginning and 435.3MB in the end (delta: -295.6MB). Peak memory consumption was 256.6MB. Max. memory is 8.0GB. [2023-12-16 07:22:47,201 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 177.2MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:22:47,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.24ms. Allocated memory is still 177.2MB. Free memory was 139.4MB in the beginning and 124.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 07:22:47,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.96ms. Allocated memory is still 177.2MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:22:47,201 INFO L158 Benchmark]: Boogie Preprocessor took 57.12ms. Allocated memory is still 177.2MB. Free memory was 122.1MB in the beginning and 119.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:22:47,202 INFO L158 Benchmark]: RCFGBuilder took 437.21ms. Allocated memory is still 177.2MB. Free memory was 119.6MB in the beginning and 100.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 07:22:47,202 INFO L158 Benchmark]: TraceAbstraction took 77614.39ms. Allocated memory was 177.2MB in the beginning and 728.8MB in the end (delta: 551.6MB). Free memory was 100.1MB in the beginning and 435.3MB in the end (delta: -335.2MB). Peak memory consumption was 217.9MB. Max. memory is 8.0GB. [2023-12-16 07:22:47,202 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-16 07:22:47,211 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 Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 177.2MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 307.24ms. Allocated memory is still 177.2MB. Free memory was 139.4MB in the beginning and 124.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.96ms. Allocated memory is still 177.2MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.12ms. Allocated memory is still 177.2MB. Free memory was 122.1MB in the beginning and 119.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 437.21ms. Allocated memory is still 177.2MB. Free memory was 119.6MB in the beginning and 100.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 77614.39ms. Allocated memory was 177.2MB in the beginning and 728.8MB in the end (delta: 551.6MB). Free memory was 100.1MB in the beginning and 435.3MB in the end (delta: -335.2MB). Peak memory consumption was 217.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-9-11-2-10-4-10-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-13-11-4-10-10-10-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown