/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-programs/partial_mod_count_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 18:02:48,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 18:02:48,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 18:02:48,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 18:02:48,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 18:02:48,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 18:02:48,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 18:02:48,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 18:02:48,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 18:02:48,682 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 18:02:48,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 18:02:48,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 18:02:48,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 18:02:48,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 18:02:48,684 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 18:02:48,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 18:02:48,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 18:02:48,685 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 18:02:48,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 18:02:48,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 18:02:48,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 18:02:48,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 18:02:48,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 18:02:48,686 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 18:02:48,686 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 18:02:48,686 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 18:02:48,686 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 18:02:48,686 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 18:02:48,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 18:02:48,687 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 18:02:48,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 18:02:48,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 18:02:48,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 18:02:48,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 18:02:48,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:02:48,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 18:02:48,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 18:02:48,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 18:02:48,688 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 18:02:48,688 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 18:02:48,688 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 18:02:48,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 18:02:48,689 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 18:02:48,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 18:02:48,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 18:02:48,689 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 18:02:48,689 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 18:02:48,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 18:02:48,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 18:02:48,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 18:02:48,936 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 18:02:48,936 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 18:02:48,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_4.c [2023-12-21 18:02:50,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 18:02:50,464 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 18:02:50,464 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_4.c [2023-12-21 18:02:50,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa79a1bb6/14b30dae533c4181a7af90af9ef22147/FLAGa2e25ec8e [2023-12-21 18:02:50,484 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa79a1bb6/14b30dae533c4181a7af90af9ef22147 [2023-12-21 18:02:50,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 18:02:50,487 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 18:02:50,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 18:02:50,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 18:02:50,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 18:02:50,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f937f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50, skipping insertion in model container [2023-12-21 18:02:50,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,508 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 18:02:50,628 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_4.c[323,336] [2023-12-21 18:02:50,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:02:50,648 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 18:02:50,657 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_4.c[323,336] [2023-12-21 18:02:50,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:02:50,675 INFO L206 MainTranslator]: Completed translation [2023-12-21 18:02:50,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50 WrapperNode [2023-12-21 18:02:50,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 18:02:50,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 18:02:50,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 18:02:50,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 18:02:50,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,703 INFO L138 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2023-12-21 18:02:50,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 18:02:50,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 18:02:50,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 18:02:50,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 18:02:50,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,723 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-21 18:02:50,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 18:02:50,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 18:02:50,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 18:02:50,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 18:02:50,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (1/1) ... [2023-12-21 18:02:50,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:02:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 18:02:50,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 18:02:50,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 18:02:50,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 18:02:50,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 18:02:50,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 18:02:50,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 18:02:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 18:02:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 18:02:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 18:02:50,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 18:02:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 18:02:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 18:02:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 18:02:50,867 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 18:02:50,869 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 18:02:51,107 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 18:02:51,135 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 18:02:51,135 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 18:02:51,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:02:51 BoogieIcfgContainer [2023-12-21 18:02:51,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 18:02:51,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 18:02:51,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 18:02:51,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 18:02:51,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:02:50" (1/3) ... [2023-12-21 18:02:51,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4365d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:02:51, skipping insertion in model container [2023-12-21 18:02:51,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:02:50" (2/3) ... [2023-12-21 18:02:51,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4365d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:02:51, skipping insertion in model container [2023-12-21 18:02:51,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:02:51" (3/3) ... [2023-12-21 18:02:51,150 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_4.c [2023-12-21 18:02:51,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 18:02:51,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 18:02:51,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 18:02:51,210 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;@691b057e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 18:02:51,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 18:02:51,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:51,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 18:02:51,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:02:51,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:02:51,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:02:51,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:02:51,224 INFO L85 PathProgramCache]: Analyzing trace with hash 802981352, now seen corresponding path program 1 times [2023-12-21 18:02:51,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:02:51,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494230403] [2023-12-21 18:02:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:02:51,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:51,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:02:51,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:02:51,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 18:02:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:02:51,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 18:02:51,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:02:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:02:51,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:02:51,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:51,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494230403] [2023-12-21 18:02:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494230403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:02:51,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:02:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:02:51,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616824783] [2023-12-21 18:02:51,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:02:51,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 18:02:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 18:02:51,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:02:51,427 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:02:51,463 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2023-12-21 18:02:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 18:02:51,466 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 18:02:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:02:51,473 INFO L225 Difference]: With dead ends: 24 [2023-12-21 18:02:51,473 INFO L226 Difference]: Without dead ends: 12 [2023-12-21 18:02:51,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:02:51,479 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:02:51,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:02:51,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-21 18:02:51,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-21 18:02:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2023-12-21 18:02:51,510 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2023-12-21 18:02:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:02:51,510 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-12-21 18:02:51,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2023-12-21 18:02:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 18:02:51,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:02:51,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:02:51,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 18:02:51,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:51,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:02:51,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:02:51,718 INFO L85 PathProgramCache]: Analyzing trace with hash -369624547, now seen corresponding path program 1 times [2023-12-21 18:02:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:02:51,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339005536] [2023-12-21 18:02:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:02:51,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:51,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:02:51,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:02:51,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 18:02:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:02:51,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:02:51,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:02:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:02:51,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:02:51,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:51,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339005536] [2023-12-21 18:02:51,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339005536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:02:51,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:02:51,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:02:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843788325] [2023-12-21 18:02:51,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:02:51,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 18:02:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 18:02:51,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:02:51,908 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:02:52,092 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2023-12-21 18:02:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 18:02:52,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 18:02:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:02:52,093 INFO L225 Difference]: With dead ends: 26 [2023-12-21 18:02:52,093 INFO L226 Difference]: Without dead ends: 15 [2023-12-21 18:02:52,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 18:02:52,095 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:02:52,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 18:02:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-21 18:02:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-21 18:02:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-12-21 18:02:52,100 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2023-12-21 18:02:52,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:02:52,101 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-12-21 18:02:52,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:52,101 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-12-21 18:02:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 18:02:52,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:02:52,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:02:52,116 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 [2023-12-21 18:02:52,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:52,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:02:52,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:02:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1324979005, now seen corresponding path program 1 times [2023-12-21 18:02:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:02:52,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570807152] [2023-12-21 18:02:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:02:52,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:52,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:02:52,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:02:52,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 18:02:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:02:52,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 18:02:52,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:02:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:02:52,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:02:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 18:02:52,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:52,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570807152] [2023-12-21 18:02:52,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570807152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:02:52,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:02:52,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 18:02:52,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820699353] [2023-12-21 18:02:52,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:02:52,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 18:02:52,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:52,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 18:02:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:02:52,486 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:02:52,738 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-12-21 18:02:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 18:02:52,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 18:02:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:02:52,739 INFO L225 Difference]: With dead ends: 33 [2023-12-21 18:02:52,739 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 18:02:52,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 18:02:52,740 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:02:52,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 18:02:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 18:02:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 18:02:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:52,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-12-21 18:02:52,745 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2023-12-21 18:02:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:02:52,745 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-12-21 18:02:52,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-12-21 18:02:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 18:02:52,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:02:52,746 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:02:52,753 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 (4)] Forceful destruction successful, exit code 0 [2023-12-21 18:02:52,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:52,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:02:52,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:02:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash -531198499, now seen corresponding path program 1 times [2023-12-21 18:02:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:02:52,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634764087] [2023-12-21 18:02:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:02:52,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:52,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:02:52,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:02:52,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 18:02:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:02:53,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 18:02:53,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:02:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 18:02:53,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:02:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 18:02:53,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634764087] [2023-12-21 18:02:53,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634764087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:02:53,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:02:53,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 18:02:53,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43160015] [2023-12-21 18:02:53,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:02:53,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 18:02:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 18:02:53,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 18:02:53,792 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:54,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:02:54,617 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2023-12-21 18:02:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 18:02:54,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 18:02:54,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:02:54,621 INFO L225 Difference]: With dead ends: 45 [2023-12-21 18:02:54,622 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 18:02:54,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 18:02:54,623 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:02:54,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 18:02:54,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 18:02:54,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-12-21 18:02:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:54,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-12-21 18:02:54,628 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 20 [2023-12-21 18:02:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:02:54,628 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-12-21 18:02:54,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-12-21 18:02:54,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 18:02:54,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:02:54,629 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:02:54,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 18:02:54,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:54,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:02:54,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:02:54,835 INFO L85 PathProgramCache]: Analyzing trace with hash 407025309, now seen corresponding path program 2 times [2023-12-21 18:02:54,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:02:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027746082] [2023-12-21 18:02:54,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:02:54,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:54,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:02:54,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:02:54,853 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 (6)] Waiting until timeout for monitored process [2023-12-21 18:02:54,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 18:02:54,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:02:54,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 18:02:54,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:02:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 18:02:54,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:02:54,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:54,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027746082] [2023-12-21 18:02:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027746082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:02:54,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:02:54,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 18:02:54,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460589810] [2023-12-21 18:02:54,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:02:54,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 18:02:54,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:54,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 18:02:54,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 18:02:54,999 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:02:55,165 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2023-12-21 18:02:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 18:02:55,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 18:02:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:02:55,166 INFO L225 Difference]: With dead ends: 41 [2023-12-21 18:02:55,166 INFO L226 Difference]: Without dead ends: 39 [2023-12-21 18:02:55,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 18:02:55,167 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:02:55,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 19 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:02:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-21 18:02:55,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-21 18:02:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:55,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-12-21 18:02:55,173 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 20 [2023-12-21 18:02:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:02:55,173 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-12-21 18:02:55,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:55,174 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-12-21 18:02:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 18:02:55,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:02:55,174 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:02:55,180 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 [2023-12-21 18:02:55,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:55,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:02:55,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:02:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2102952292, now seen corresponding path program 1 times [2023-12-21 18:02:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:02:55,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403590861] [2023-12-21 18:02:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:02:55,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:02:55,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:02:55,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 18:02:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:02:55,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 18:02:55,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:02:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:02:55,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:02:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:02:55,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403590861] [2023-12-21 18:02:55,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403590861] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:02:55,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:02:55,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 18:02:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488840404] [2023-12-21 18:02:55,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:02:55,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 18:02:55,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:55,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 18:02:55,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 18:02:55,708 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:02:56,404 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2023-12-21 18:02:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:02:56,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-21 18:02:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:02:56,405 INFO L225 Difference]: With dead ends: 68 [2023-12-21 18:02:56,405 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 18:02:56,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:02:56,406 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:02:56,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 18:02:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 18:02:56,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-21 18:02:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-12-21 18:02:56,411 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 25 [2023-12-21 18:02:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:02:56,411 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-12-21 18:02:56,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:02:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-12-21 18:02:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 18:02:56,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:02:56,412 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:02:56,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 18:02:56,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:56,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:02:56,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:02:56,615 INFO L85 PathProgramCache]: Analyzing trace with hash 514299228, now seen corresponding path program 1 times [2023-12-21 18:02:56,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:02:56,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544754218] [2023-12-21 18:02:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:02:56,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:02:56,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:02:56,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:02:56,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 18:02:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:02:56,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 18:02:56,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:02:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 73 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 18:02:56,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:02:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 73 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 18:02:59,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:02:59,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544754218] [2023-12-21 18:02:59,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544754218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:02:59,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:02:59,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-21 18:02:59,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382259315] [2023-12-21 18:02:59,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:02:59,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 18:02:59,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:02:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 18:02:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:02:59,337 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:03:03,167 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2023-12-21 18:03:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 18:03:03,170 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 18:03:03,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:03:03,172 INFO L225 Difference]: With dead ends: 97 [2023-12-21 18:03:03,172 INFO L226 Difference]: Without dead ends: 68 [2023-12-21 18:03:03,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2023-12-21 18:03:03,174 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:03:03,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 18:03:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-21 18:03:03,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2023-12-21 18:03:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 62 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:03,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2023-12-21 18:03:03,181 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 43 [2023-12-21 18:03:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:03:03,181 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2023-12-21 18:03:03,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:03,181 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2023-12-21 18:03:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 18:03:03,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:03:03,182 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:03:03,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-21 18:03:03,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:03,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:03:03,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:03:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash -413285412, now seen corresponding path program 2 times [2023-12-21 18:03:03,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:03:03,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125130908] [2023-12-21 18:03:03,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:03:03,391 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 [2023-12-21 18:03:03,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:03:03,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:03:03,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 18:03:03,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:03:03,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:03:03,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 18:03:03,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:03:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:03:03,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:03:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:03:04,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:03:04,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125130908] [2023-12-21 18:03:04,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125130908] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:03:04,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:03:04,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 18:03:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596998225] [2023-12-21 18:03:04,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:03:04,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 18:03:04,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:03:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 18:03:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 18:03:04,329 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:03:07,431 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2023-12-21 18:03:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 18:03:07,432 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 18:03:07,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:03:07,433 INFO L225 Difference]: With dead ends: 104 [2023-12-21 18:03:07,433 INFO L226 Difference]: Without dead ends: 86 [2023-12-21 18:03:07,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 18:03:07,434 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:03:07,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 63 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 18:03:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-21 18:03:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-21 18:03:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2023-12-21 18:03:07,442 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 43 [2023-12-21 18:03:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:03:07,442 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2023-12-21 18:03:07,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2023-12-21 18:03:07,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 18:03:07,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:03:07,443 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 14, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:03:07,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 18:03:07,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:07,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:03:07,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:03:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash 202850652, now seen corresponding path program 2 times [2023-12-21 18:03:07,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:03:07,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321983653] [2023-12-21 18:03:07,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:03:07,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:07,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:03:07,646 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:03:07,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 18:03:08,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:03:08,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:03:08,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 18:03:08,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:03:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 337 proven. 301 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-21 18:03:08,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:03:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 337 proven. 301 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-21 18:03:18,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:03:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321983653] [2023-12-21 18:03:18,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321983653] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:03:18,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:03:18,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-21 18:03:18,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038167338] [2023-12-21 18:03:18,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:03:18,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 18:03:18,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:03:18,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 18:03:18,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2023-12-21 18:03:18,306 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 32 states, 32 states have (on average 3.1875) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:41,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:03:41,908 INFO L93 Difference]: Finished difference Result 161 states and 201 transitions. [2023-12-21 18:03:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 18:03:41,917 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-21 18:03:41,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:03:41,918 INFO L225 Difference]: With dead ends: 161 [2023-12-21 18:03:41,918 INFO L226 Difference]: Without dead ends: 120 [2023-12-21 18:03:41,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 18:03:41,919 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 52 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:03:41,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 84 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 18:03:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-21 18:03:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2023-12-21 18:03:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 110 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2023-12-21 18:03:41,933 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 79 [2023-12-21 18:03:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:03:41,933 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2023-12-21 18:03:41,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2023-12-21 18:03:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 18:03:41,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:03:41,934 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:03:41,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 18:03:42,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:42,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:03:42,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:03:42,152 INFO L85 PathProgramCache]: Analyzing trace with hash 154263132, now seen corresponding path program 3 times [2023-12-21 18:03:42,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:03:42,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746274347] [2023-12-21 18:03:42,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:03:42,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:42,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:03:42,163 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:03:42,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 18:03:42,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 18:03:42,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:03:42,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 18:03:42,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:03:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-21 18:03:42,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:03:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-21 18:03:45,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:03:45,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746274347] [2023-12-21 18:03:45,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746274347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:03:45,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:03:45,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-21 18:03:45,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095440294] [2023-12-21 18:03:45,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:03:45,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 18:03:45,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:03:45,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 18:03:45,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 18:03:45,496 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:03:46,880 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2023-12-21 18:03:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 18:03:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-21 18:03:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:03:46,884 INFO L225 Difference]: With dead ends: 133 [2023-12-21 18:03:46,884 INFO L226 Difference]: Without dead ends: 131 [2023-12-21 18:03:46,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2023-12-21 18:03:46,885 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 53 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 18:03:46,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 41 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 18:03:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-21 18:03:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-12-21 18:03:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1384615384615384) internal successors, (148), 130 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2023-12-21 18:03:46,908 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 79 [2023-12-21 18:03:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:03:46,908 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2023-12-21 18:03:46,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:03:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2023-12-21 18:03:46,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 18:03:46,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:03:46,910 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2023-12-21 18:03:46,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 18:03:47,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:47,121 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:03:47,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:03:47,121 INFO L85 PathProgramCache]: Analyzing trace with hash -28958820, now seen corresponding path program 4 times [2023-12-21 18:03:47,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:03:47,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952686057] [2023-12-21 18:03:47,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:03:47,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:03:47,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:03:47,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:03:47,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 18:03:47,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:03:47,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:03:47,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 18:03:47,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:03:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-21 18:03:48,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:03:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-21 18:03:50,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:03:50,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952686057] [2023-12-21 18:03:50,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952686057] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:03:50,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:03:50,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 18:03:50,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132228643] [2023-12-21 18:03:50,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:03:50,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 18:03:50,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:03:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 18:03:50,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 18:03:50,282 INFO L87 Difference]: Start difference. First operand 131 states and 148 transitions. Second operand has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:07,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:04:07,301 INFO L93 Difference]: Finished difference Result 216 states and 271 transitions. [2023-12-21 18:04:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 18:04:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-21 18:04:07,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:04:07,306 INFO L225 Difference]: With dead ends: 216 [2023-12-21 18:04:07,306 INFO L226 Difference]: Without dead ends: 178 [2023-12-21 18:04:07,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 18:04:07,308 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 190 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-21 18:04:07,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 118 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-21 18:04:07,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-21 18:04:07,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-12-21 18:04:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.1412429378531073) internal successors, (202), 177 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 202 transitions. [2023-12-21 18:04:07,332 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 202 transitions. Word has length 99 [2023-12-21 18:04:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:04:07,333 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 202 transitions. [2023-12-21 18:04:07,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:07,333 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 202 transitions. [2023-12-21 18:04:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 18:04:07,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:04:07,341 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 30, 16, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2023-12-21 18:04:07,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 18:04:07,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:04:07,546 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:04:07,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:04:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash -807216484, now seen corresponding path program 3 times [2023-12-21 18:04:07,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:04:07,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772941196] [2023-12-21 18:04:07,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:04:07,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:04:07,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:04:07,569 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:04:07,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 18:04:07,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 18:04:07,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:04:07,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 18:04:07,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:04:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3221 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-12-21 18:04:08,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:04:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3221 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-12-21 18:04:19,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:04:19,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772941196] [2023-12-21 18:04:19,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772941196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:04:19,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:04:19,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-21 18:04:19,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33797119] [2023-12-21 18:04:19,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:04:19,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 18:04:19,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:04:19,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 18:04:19,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2023-12-21 18:04:19,643 INFO L87 Difference]: Start difference. First operand 178 states and 202 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:04:31,285 INFO L93 Difference]: Finished difference Result 220 states and 259 transitions. [2023-12-21 18:04:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 18:04:31,288 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2023-12-21 18:04:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:04:31,289 INFO L225 Difference]: With dead ends: 220 [2023-12-21 18:04:31,289 INFO L226 Difference]: Without dead ends: 218 [2023-12-21 18:04:31,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=510, Invalid=1050, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 18:04:31,290 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 147 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:04:31,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 110 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 18:04:31,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-21 18:04:31,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2023-12-21 18:04:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.152073732718894) internal successors, (250), 217 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 250 transitions. [2023-12-21 18:04:31,328 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 250 transitions. Word has length 171 [2023-12-21 18:04:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:04:31,329 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 250 transitions. [2023-12-21 18:04:31,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:04:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 250 transitions. [2023-12-21 18:04:31,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 18:04:31,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:04:31,331 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 30, 16, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2023-12-21 18:04:31,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 18:04:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:04:31,532 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:04:31,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:04:31,533 INFO L85 PathProgramCache]: Analyzing trace with hash -956498660, now seen corresponding path program 4 times [2023-12-21 18:04:31,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:04:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654578276] [2023-12-21 18:04:31,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:04:31,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:04:31,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:04:31,552 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:04:31,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 18:04:32,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:04:32,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:04:32,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 18:04:32,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:04:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3593 backedges. 1441 proven. 1365 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-12-21 18:04:35,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:05:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3593 backedges. 1441 proven. 1365 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-12-21 18:05:13,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:05:13,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654578276] [2023-12-21 18:05:13,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654578276] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:05:13,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:05:13,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2023-12-21 18:05:13,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98665891] [2023-12-21 18:05:13,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:05:13,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 18:05:13,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:05:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 18:05:13,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 18:05:13,652 INFO L87 Difference]: Start difference. First operand 218 states and 250 transitions. Second operand has 64 states, 64 states have (on average 3.09375) internal successors, (198), 63 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:08:36,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:08:36,660 INFO L93 Difference]: Finished difference Result 409 states and 505 transitions. [2023-12-21 18:08:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 18:08:36,665 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.09375) internal successors, (198), 63 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-12-21 18:08:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:08:36,666 INFO L225 Difference]: With dead ends: 409 [2023-12-21 18:08:36,666 INFO L226 Difference]: Without dead ends: 284 [2023-12-21 18:08:36,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 234.0s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 18:08:36,669 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 169 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-21 18:08:36,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 179 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-21 18:08:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-21 18:08:36,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 267. [2023-12-21 18:08:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.1278195488721805) internal successors, (300), 266 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:08:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2023-12-21 18:08:36,697 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 211 [2023-12-21 18:08:36,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:08:36,697 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2023-12-21 18:08:36,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.09375) internal successors, (198), 63 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:08:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2023-12-21 18:08:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 18:08:36,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:08:36,711 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2023-12-21 18:08:36,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 18:08:36,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:08:36,928 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:08:36,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:08:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1338521372, now seen corresponding path program 5 times [2023-12-21 18:08:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:08:36,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244879305] [2023-12-21 18:08:36,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:08:36,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:08:36,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:08:36,931 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:08:36,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 18:08:38,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-12-21 18:08:38,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:08:38,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 18:08:38,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:08:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3593 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-21 18:08:39,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:08:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3593 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-21 18:08:47,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:08:47,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244879305] [2023-12-21 18:08:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244879305] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:08:47,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:08:47,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49] total 96 [2023-12-21 18:08:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605564360] [2023-12-21 18:08:47,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:08:47,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-12-21 18:08:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:08:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-12-21 18:08:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2448, Invalid=6864, Unknown=0, NotChecked=0, Total=9312 [2023-12-21 18:08:47,888 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand has 97 states, 97 states have (on average 2.9690721649484537) internal successors, (288), 96 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:09:05,643 WARN L293 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 209 DAG size of output: 139 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:09:13,024 WARN L293 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 204 DAG size of output: 136 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:10:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:10:59,917 INFO L93 Difference]: Finished difference Result 440 states and 551 transitions. [2023-12-21 18:10:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-21 18:10:59,918 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.9690721649484537) internal successors, (288), 96 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-12-21 18:10:59,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:10:59,919 INFO L225 Difference]: With dead ends: 440 [2023-12-21 18:10:59,919 INFO L226 Difference]: Without dead ends: 362 [2023-12-21 18:10:59,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 126.1s TimeCoverageRelationStatistics Valid=6901, Invalid=13405, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 18:10:59,923 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 632 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 7112 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 7153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 7112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-21 18:10:59,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 248 Invalid, 7153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 7112 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-12-21 18:10:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-21 18:10:59,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2023-12-21 18:10:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.1357340720221607) internal successors, (410), 361 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:10:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 410 transitions. [2023-12-21 18:10:59,990 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 410 transitions. Word has length 211 [2023-12-21 18:10:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:10:59,990 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 410 transitions. [2023-12-21 18:10:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.9690721649484537) internal successors, (288), 96 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:10:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 410 transitions. [2023-12-21 18:10:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-21 18:10:59,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:59,992 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 62, 32, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2023-12-21 18:11:00,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 18:11:00,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:11:00,202 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:11:00,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:11:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1881713948, now seen corresponding path program 5 times [2023-12-21 18:11:00,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:11:00,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641150067] [2023-12-21 18:11:00,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:11:00,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:11:00,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:11:00,205 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:11:00,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 18:11:15,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2023-12-21 18:11:15,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:11:15,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 18:11:15,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:11:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13649 backedges. 5953 proven. 5797 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2023-12-21 18:11:18,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:14:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 13649 backedges. 5953 proven. 5797 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2023-12-21 18:14:30,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:14:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641150067] [2023-12-21 18:14:30,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641150067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:14:30,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:14:30,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 65] total 128 [2023-12-21 18:14:30,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7334600] [2023-12-21 18:14:30,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:14:30,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-12-21 18:14:30,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:14:30,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-12-21 18:14:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4288, Invalid=12224, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 18:14:30,231 INFO L87 Difference]: Start difference. First operand 362 states and 410 transitions. Second operand has 129 states, 129 states have (on average 3.0232558139534884) internal successors, (390), 128 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:15:26,591 WARN L293 SmtUtils]: Spent 43.37s on a formula simplification that was a NOOP. DAG size: 440 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:16:20,633 WARN L293 SmtUtils]: Spent 46.22s on a formula simplification that was a NOOP. DAG size: 436 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 18:17:04,423 WARN L293 SmtUtils]: Spent 36.19s on a formula simplification that was a NOOP. DAG size: 433 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 18:17:41,908 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:17:41,938 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:17:43,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-21 18:17:43,138 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-21 18:17:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 18:17:43,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 328.4s TimeCoverageRelationStatistics Valid=4675, Invalid=12617, Unknown=0, NotChecked=0, Total=17292 [2023-12-21 18:17:43,148 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11976 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:17:43,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 11978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11976 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-21 18:17:43,149 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 18:17:43,150 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (362states) and FLOYD_HOARE automaton (currently 68 states, 129 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-21 18:17:43,156 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 2, 1, 1, 1] [2023-12-21 18:17:43,170 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 18:17:43,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:17:43 BoogieIcfgContainer [2023-12-21 18:17:43,187 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 18:17:43,188 INFO L158 Benchmark]: Toolchain (without parser) took 892700.95ms. Allocated memory is still 231.7MB. Free memory was 183.3MB in the beginning and 169.4MB in the end (delta: 13.9MB). Peak memory consumption was 124.7MB. Max. memory is 8.0GB. [2023-12-21 18:17:43,189 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 181.4MB. Free memory was 135.8MB in the beginning and 135.6MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 18:17:43,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.39ms. Allocated memory is still 231.7MB. Free memory was 183.3MB in the beginning and 172.0MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 18:17:43,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.55ms. Allocated memory is still 231.7MB. Free memory was 172.0MB in the beginning and 170.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 18:17:43,189 INFO L158 Benchmark]: Boogie Preprocessor took 37.14ms. Allocated memory is still 231.7MB. Free memory was 170.4MB in the beginning and 168.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:17:43,189 INFO L158 Benchmark]: RCFGBuilder took 393.37ms. Allocated memory is still 231.7MB. Free memory was 168.3MB in the beginning and 155.3MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 18:17:43,190 INFO L158 Benchmark]: TraceAbstraction took 892050.56ms. Allocated memory is still 231.7MB. Free memory was 154.7MB in the beginning and 169.4MB in the end (delta: -14.7MB). Peak memory consumption was 96.4MB. Max. memory is 8.0GB. [2023-12-21 18:17:43,191 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 181.4MB. Free memory was 135.8MB in the beginning and 135.6MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.39ms. Allocated memory is still 231.7MB. Free memory was 183.3MB in the beginning and 172.0MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.55ms. Allocated memory is still 231.7MB. Free memory was 172.0MB in the beginning and 170.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.14ms. Allocated memory is still 231.7MB. Free memory was 170.4MB in the beginning and 168.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 393.37ms. Allocated memory is still 231.7MB. Free memory was 168.3MB in the beginning and 155.3MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 892050.56ms. Allocated memory is still 231.7MB. Free memory was 154.7MB in the beginning and 169.4MB in the end (delta: -14.7MB). Peak memory consumption was 96.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was constructing difference of abstraction (362states) and FLOYD_HOARE automaton (currently 68 states, 129 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 892.0s, OverallIterations: 15, TraceHistogramMax: 94, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 590.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1401 SdHoareTripleChecker+Valid, 40.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1401 mSDsluCounter, 1010 SdHoareTripleChecker+Invalid, 34.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 886 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26409 IncrementalHoareTripleChecker+Invalid, 26503 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 124 mSDtfsCounter, 26409 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2871 GetRequests, 2256 SyntacticMatches, 0 SemanticMatches, 614 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 756.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=14, InterpolantAutomatonStates: 365, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 35 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 18.2s SatisfiabilityAnalysisTime, 278.5s InterpolantComputationTime, 1383 NumberOfCodeBlocks, 1185 NumberOfCodeBlocksAsserted, 163 NumberOfCheckSat, 2703 ConstructedInterpolants, 0 QuantifiedInterpolants, 16373 SizeOfPredicates, 20 NumberOfNonLiveVariables, 2796 ConjunctsInSsa, 269 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 30004/53274 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available [2023-12-21 18:17:43,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown