/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/loop-acceleration/simple_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:26:30,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:26:30,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 22:26:30,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:26:30,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:26:30,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:26:30,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:26:30,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:26:30,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:26:30,546 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:26:30,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:26:30,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:26:30,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:26:30,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:26:30,547 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:26:30,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:26:30,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:26:30,548 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:26:30,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:26:30,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:26:30,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:26:30,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:26:30,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:26:30,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:26:30,550 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:26:30,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:26:30,550 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:26:30,551 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:26:30,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:26:30,551 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:26:30,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:26:30,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:26:30,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:26:30,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:26:30,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:26:30,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:26:30,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:26:30,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:26:30,553 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:26:30,553 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:26:30,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:26:30,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:26:30,554 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:26:30,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:26:30,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:26:30,554 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:26:30,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:26:30,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:26:30,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:26:30,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:26:30,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:26:30,741 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:26:30,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-1.c [2023-12-24 22:26:31,773 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:26:31,901 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:26:31,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-1.c [2023-12-24 22:26:31,906 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b8a185f/3fe4f2ed274443a2b64ad8cd808c0e49/FLAGdb717b7e2 [2023-12-24 22:26:31,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b8a185f/3fe4f2ed274443a2b64ad8cd808c0e49 [2023-12-24 22:26:31,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:26:31,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:26:31,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:26:31,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:26:31,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:26:31,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:26:31" (1/1) ... [2023-12-24 22:26:31,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52af5ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:31, skipping insertion in model container [2023-12-24 22:26:31,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:26:31" (1/1) ... [2023-12-24 22:26:31,942 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:26:32,063 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-1.c[322,335] [2023-12-24 22:26:32,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:26:32,085 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:26:32,093 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-1.c[322,335] [2023-12-24 22:26:32,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:26:32,107 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:26:32,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32 WrapperNode [2023-12-24 22:26:32,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:26:32,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:26:32,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:26:32,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:26:32,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,129 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2023-12-24 22:26:32,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:26:32,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:26:32,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:26:32,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:26:32,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,138 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,145 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 22:26:32,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:26:32,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:26:32,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:26:32,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:26:32,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (1/1) ... [2023-12-24 22:26:32,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:26:32,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:26:32,183 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) [2023-12-24 22:26:32,207 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 [2023-12-24 22:26:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:26:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:26:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:26:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:26:32,261 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:26:32,265 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:26:32,378 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:26:32,403 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:26:32,403 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 22:26:32,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:26:32 BoogieIcfgContainer [2023-12-24 22:26:32,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:26:32,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:26:32,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:26:32,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:26:32,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:26:31" (1/3) ... [2023-12-24 22:26:32,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eecef18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:26:32, skipping insertion in model container [2023-12-24 22:26:32,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:26:32" (2/3) ... [2023-12-24 22:26:32,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eecef18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:26:32, skipping insertion in model container [2023-12-24 22:26:32,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:26:32" (3/3) ... [2023-12-24 22:26:32,411 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_4-1.c [2023-12-24 22:26:32,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:26:32,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:26:32,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:26:32,470 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;@795f3118, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:26:32,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:26:32,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-24 22:26:32,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:26:32,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-24 22:26:32,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:26:32,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:26:32,482 INFO L85 PathProgramCache]: Analyzing trace with hash 56617893, now seen corresponding path program 1 times [2023-12-24 22:26:32,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:26:32,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316260473] [2023-12-24 22:26:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:26:32,491 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 [2023-12-24 22:26:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:26:32,494 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) [2023-12-24 22:26:32,495 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 [2023-12-24 22:26:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:26:32,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 22:26:32,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:26:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:32,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:26:32,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:26:32,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316260473] [2023-12-24 22:26:32,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316260473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:26:32,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:26:32,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:26:32,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730316555] [2023-12-24 22:26:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:26:32,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 22:26:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:26:32,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 22:26:32,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 22:26:32,624 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:26:32,658 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2023-12-24 22:26:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 22:26:32,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-24 22:26:32,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:26:32,665 INFO L225 Difference]: With dead ends: 15 [2023-12-24 22:26:32,666 INFO L226 Difference]: Without dead ends: 7 [2023-12-24 22:26:32,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 22:26:32,671 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:26:32,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:26:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-24 22:26:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-24 22:26:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-12-24 22:26:32,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-12-24 22:26:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:26:32,692 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-12-24 22:26:32,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-12-24 22:26:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-24 22:26:32,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:26:32,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-24 22:26:32,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 22:26:32,895 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 [2023-12-24 22:26:32,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:26:32,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:26:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1756820054, now seen corresponding path program 1 times [2023-12-24 22:26:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:26:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927090827] [2023-12-24 22:26:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:26:32,898 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 [2023-12-24 22:26:32,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:26:32,899 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) [2023-12-24 22:26:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:26:32,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 22:26:32,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:26:32,926 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 [2023-12-24 22:26:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:32,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:26:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:32,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:26:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927090827] [2023-12-24 22:26:32,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927090827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:26:32,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:26:32,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-24 22:26:32,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912397963] [2023-12-24 22:26:32,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:26:32,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 22:26:32,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:26:32,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 22:26:32,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:26:32,969 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:26:32,994 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2023-12-24 22:26:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 22:26:32,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 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 6 [2023-12-24 22:26:32,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:26:32,995 INFO L225 Difference]: With dead ends: 14 [2023-12-24 22:26:32,995 INFO L226 Difference]: Without dead ends: 10 [2023-12-24 22:26:32,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:26:32,996 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:26:32,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:26:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-24 22:26:33,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-24 22:26:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-12-24 22:26:33,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2023-12-24 22:26:33,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:26:33,002 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-12-24 22:26:33,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:33,002 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-12-24 22:26:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-24 22:26:33,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:26:33,003 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2023-12-24 22:26:33,005 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 [2023-12-24 22:26:33,204 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 [2023-12-24 22:26:33,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:26:33,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:26:33,206 INFO L85 PathProgramCache]: Analyzing trace with hash 608473061, now seen corresponding path program 2 times [2023-12-24 22:26:33,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:26:33,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798216074] [2023-12-24 22:26:33,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:26:33,206 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 [2023-12-24 22:26:33,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:26:33,207 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) [2023-12-24 22:26:33,220 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 [2023-12-24 22:26:33,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:26:33,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:26:33,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 22:26:33,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:26:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:33,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:26:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:33,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:26:33,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798216074] [2023-12-24 22:26:33,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798216074] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:26:33,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:26:33,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-24 22:26:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436440016] [2023-12-24 22:26:33,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:26:33,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 22:26:33,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:26:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 22:26:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:26:33,402 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 12 states, 12 states have (on average 1.25) 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) [2023-12-24 22:26:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:26:33,593 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2023-12-24 22:26:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 22:26:33,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) 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) Word has length 9 [2023-12-24 22:26:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:26:33,595 INFO L225 Difference]: With dead ends: 20 [2023-12-24 22:26:33,595 INFO L226 Difference]: Without dead ends: 16 [2023-12-24 22:26:33,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-12-24 22:26:33,596 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:26:33,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 15 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:26:33,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-24 22:26:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-24 22:26:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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) [2023-12-24 22:26:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-12-24 22:26:33,601 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2023-12-24 22:26:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:26:33,601 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-12-24 22:26:33,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) 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) [2023-12-24 22:26:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-12-24 22:26:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-24 22:26:33,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:26:33,602 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2023-12-24 22:26:33,607 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 [2023-12-24 22:26:33,804 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 [2023-12-24 22:26:33,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:26:33,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:26:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash -973747643, now seen corresponding path program 3 times [2023-12-24 22:26:33,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:26:33,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137464732] [2023-12-24 22:26:33,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:26:33,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:26:33,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:26:33,810 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) [2023-12-24 22:26:33,838 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 [2023-12-24 22:26:33,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-24 22:26:33,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:26:33,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:26:33,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:26:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:33,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:26:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:34,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:26:34,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137464732] [2023-12-24 22:26:34,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137464732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:26:34,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:26:34,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-24 22:26:34,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064250204] [2023-12-24 22:26:34,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:26:34,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 22:26:34,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:26:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 22:26:34,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-24 22:26:34,256 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:26:35,244 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2023-12-24 22:26:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 22:26:35,249 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-24 22:26:35,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:26:35,250 INFO L225 Difference]: With dead ends: 32 [2023-12-24 22:26:35,250 INFO L226 Difference]: Without dead ends: 28 [2023-12-24 22:26:35,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=430, Invalid=760, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 22:26:35,253 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:26:35,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 9 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:26:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-24 22:26:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-24 22:26:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 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) [2023-12-24 22:26:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-12-24 22:26:35,259 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2023-12-24 22:26:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:26:35,259 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-12-24 22:26:35,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-12-24 22:26:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 22:26:35,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:26:35,260 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2023-12-24 22:26:35,264 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 [2023-12-24 22:26:35,467 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 [2023-12-24 22:26:35,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:26:35,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:26:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1601595141, now seen corresponding path program 4 times [2023-12-24 22:26:35,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:26:35,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422038857] [2023-12-24 22:26:35,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:26:35,469 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 [2023-12-24 22:26:35,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:26:35,470 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) [2023-12-24 22:26:35,473 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 [2023-12-24 22:26:35,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:26:35,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:26:35,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 22:26:35,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:26:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:35,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:26:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:36,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:26:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422038857] [2023-12-24 22:26:36,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422038857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:26:36,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:26:36,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-24 22:26:36,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557118227] [2023-12-24 22:26:36,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:26:36,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-24 22:26:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:26:36,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-24 22:26:36,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 22:26:36,815 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:26:42,718 INFO L93 Difference]: Finished difference Result 56 states and 79 transitions. [2023-12-24 22:26:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-24 22:26:42,720 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-24 22:26:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:26:42,721 INFO L225 Difference]: With dead ends: 56 [2023-12-24 22:26:42,721 INFO L226 Difference]: Without dead ends: 52 [2023-12-24 22:26:42,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1726, Invalid=3244, Unknown=0, NotChecked=0, Total=4970 [2023-12-24 22:26:42,723 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 66 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:26:42,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 21 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:26:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-24 22:26:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-24 22:26:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2023-12-24 22:26:42,734 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 27 [2023-12-24 22:26:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:26:42,734 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2023-12-24 22:26:42,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2023-12-24 22:26:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-24 22:26:42,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:26:42,735 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1] [2023-12-24 22:26:42,751 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 [2023-12-24 22:26:42,936 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 [2023-12-24 22:26:42,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:26:42,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:26:42,937 INFO L85 PathProgramCache]: Analyzing trace with hash 534265989, now seen corresponding path program 5 times [2023-12-24 22:26:42,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:26:42,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6917984] [2023-12-24 22:26:42,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:26:42,938 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 [2023-12-24 22:26:42,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:26:42,939 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) [2023-12-24 22:26:42,943 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 [2023-12-24 22:26:43,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-24 22:26:43,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:26:43,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 22:26:43,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:26:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:43,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:26:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:26:47,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:26:47,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6917984] [2023-12-24 22:26:47,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6917984] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:26:47,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:26:47,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-24 22:26:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132492623] [2023-12-24 22:26:47,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:26:47,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-24 22:26:47,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:26:47,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-24 22:26:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-24 22:26:47,814 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 96 states, 96 states have (on average 1.03125) internal successors, (99), 95 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:27:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:27:34,241 INFO L93 Difference]: Finished difference Result 104 states and 151 transitions. [2023-12-24 22:27:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-24 22:27:34,245 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.03125) internal successors, (99), 95 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-24 22:27:34,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:27:34,246 INFO L225 Difference]: With dead ends: 104 [2023-12-24 22:27:34,246 INFO L226 Difference]: Without dead ends: 100 [2023-12-24 22:27:34,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 49.8s TimeCoverageRelationStatistics Valid=6910, Invalid=13396, Unknown=0, NotChecked=0, Total=20306 [2023-12-24 22:27:34,250 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 138 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:27:34,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 47 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 22:27:34,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-24 22:27:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-24 22:27:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:27:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2023-12-24 22:27:34,282 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 51 [2023-12-24 22:27:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:27:34,282 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2023-12-24 22:27:34,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.03125) internal successors, (99), 95 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:27:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2023-12-24 22:27:34,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-24 22:27:34,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:27:34,285 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1] [2023-12-24 22:27:34,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-24 22:27:34,488 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 [2023-12-24 22:27:34,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:27:34,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:27:34,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1721863291, now seen corresponding path program 6 times [2023-12-24 22:27:34,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:27:34,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369762126] [2023-12-24 22:27:34,489 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:27:34,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:27:34,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:27:34,490 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) [2023-12-24 22:27:34,504 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 [2023-12-24 22:27:34,679 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2023-12-24 22:27:34,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:27:34,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-24 22:27:34,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:27:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:27:37,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:27:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:27:53,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:27:53,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369762126] [2023-12-24 22:27:53,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369762126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:27:53,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:27:53,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-24 22:27:53,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100019157] [2023-12-24 22:27:53,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:27:53,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-24 22:27:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:27:53,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-24 22:27:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-24 22:27:53,330 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 192 states, 192 states have (on average 1.015625) internal successors, (195), 191 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:34:53,408 WARN L293 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 285 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:34:53,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:34:53,611 INFO L93 Difference]: Finished difference Result 200 states and 295 transitions. [2023-12-24 22:34:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-24 22:34:53,625 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.015625) internal successors, (195), 191 states have internal predecessors, (195), 0 states have call successors, (0), 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 [2023-12-24 22:34:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:34:53,626 INFO L225 Difference]: With dead ends: 200 [2023-12-24 22:34:53,626 INFO L226 Difference]: Without dead ends: 196 [2023-12-24 22:34:53,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 433.8s TimeCoverageRelationStatistics Valid=27646, Invalid=54436, Unknown=0, NotChecked=0, Total=82082 [2023-12-24 22:34:53,642 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 282 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 9343 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 9438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 9343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:34:53,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 129 Invalid, 9438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 9343 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-24 22:34:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-24 22:34:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-12-24 22:34:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.005128205128205) internal successors, (196), 195 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:34:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2023-12-24 22:34:53,767 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 99 [2023-12-24 22:34:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:34:53,768 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2023-12-24 22:34:53,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.015625) internal successors, (195), 191 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:34:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2023-12-24 22:34:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-24 22:34:53,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:34:53,775 INFO L195 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1, 1] [2023-12-24 22:34:53,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 22:34:53,978 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 [2023-12-24 22:34:53,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:34:53,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:34:53,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1232394629, now seen corresponding path program 7 times [2023-12-24 22:34:53,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:34:53,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365573287] [2023-12-24 22:34:53,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:34:53,981 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 [2023-12-24 22:34:53,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:34:53,982 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) [2023-12-24 22:34:53,997 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 [2023-12-24 22:34:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:34:54,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-24 22:34:54,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:35:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:35:07,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:36:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:36:16,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:36:16,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365573287] [2023-12-24 22:36:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365573287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:36:16,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:36:16,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-24 22:36:16,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23885124] [2023-12-24 22:36:16,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:36:16,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-24 22:36:16,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:36:16,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-24 22:36:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-24 22:36:16,459 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand has 384 states, 384 states have (on average 1.0078125) internal successors, (387), 383 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:37:18,482 WARN L293 SmtUtils]: Spent 26.93s on a formula simplification that was a NOOP. DAG size: 574 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:38:09,727 WARN L293 SmtUtils]: Spent 26.46s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:39:00,986 WARN L293 SmtUtils]: Spent 26.31s on a formula simplification that was a NOOP. DAG size: 568 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:39:51,084 WARN L293 SmtUtils]: Spent 25.62s on a formula simplification that was a NOOP. DAG size: 565 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:40:39,688 WARN L293 SmtUtils]: Spent 24.66s on a formula simplification that was a NOOP. DAG size: 562 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 22:41:17,208 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 [2023-12-24 22:41:17,236 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:41:18,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-12-24 22:41:18,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 332.6s TimeCoverageRelationStatistics Valid=39166, Invalid=111766, Unknown=0, NotChecked=0, Total=150932 [2023-12-24 22:41:18,223 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36678 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:41:18,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36678 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-12-24 22:41:18,225 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 22:41:18,233 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 (9)] Ended with exit code 0 [2023-12-24 22:41:18,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-24 22:41:18,431 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 [2023-12-24 22:41:18,432 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (196states) and FLOYD_HOARE automaton (currently 198 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-24 22:41:18,435 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1] [2023-12-24 22:41:18,437 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 22:41:18,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:41:18 BoogieIcfgContainer [2023-12-24 22:41:18,442 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 22:41:18,442 INFO L158 Benchmark]: Toolchain (without parser) took 886520.83ms. Allocated memory was 282.1MB in the beginning and 338.7MB in the end (delta: 56.6MB). Free memory was 239.9MB in the beginning and 240.3MB in the end (delta: -384.7kB). Peak memory consumption was 234.7MB. Max. memory is 8.0GB. [2023-12-24 22:41:18,442 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory was 131.3MB in the beginning and 131.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 22:41:18,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.19ms. Allocated memory is still 282.1MB. Free memory was 239.4MB in the beginning and 228.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 22:41:18,443 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.56ms. Allocated memory is still 282.1MB. Free memory was 228.9MB in the beginning and 227.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 22:41:18,443 INFO L158 Benchmark]: Boogie Preprocessor took 32.07ms. Allocated memory is still 282.1MB. Free memory was 227.3MB in the beginning and 225.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 22:41:18,443 INFO L158 Benchmark]: RCFGBuilder took 240.95ms. Allocated memory is still 282.1MB. Free memory was 225.8MB in the beginning and 215.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 22:41:18,443 INFO L158 Benchmark]: TraceAbstraction took 886035.14ms. Allocated memory was 282.1MB in the beginning and 338.7MB in the end (delta: 56.6MB). Free memory was 214.7MB in the beginning and 240.3MB in the end (delta: -25.6MB). Peak memory consumption was 209.6MB. Max. memory is 8.0GB. [2023-12-24 22:41:18,445 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory was 131.3MB in the beginning and 131.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.19ms. Allocated memory is still 282.1MB. Free memory was 239.4MB in the beginning and 228.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.56ms. Allocated memory is still 282.1MB. Free memory was 228.9MB in the beginning and 227.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.07ms. Allocated memory is still 282.1MB. Free memory was 227.3MB in the beginning and 225.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 240.95ms. Allocated memory is still 282.1MB. Free memory was 225.8MB in the beginning and 215.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 886035.14ms. Allocated memory was 282.1MB in the beginning and 338.7MB in the end (delta: 56.6MB). Free memory was 214.7MB in the beginning and 240.3MB in the end (delta: -25.6MB). Peak memory consumption was 209.6MB. 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: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was constructing difference of abstraction (196states) and FLOYD_HOARE automaton (currently 198 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 886.0s, OverallIterations: 8, TraceHistogramMax: 190, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 775.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 531 SdHoareTripleChecker+Valid, 15.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 531 mSDsluCounter, 236 SdHoareTripleChecker+Invalid, 13.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 213 mSDsCounter, 184 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49186 IncrementalHoareTripleChecker+Invalid, 49370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 184 mSolverCounterUnsat, 23 mSDtfsCounter, 49186 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 982 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 936 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5879 ImplicationChecksByTransitivity, 824.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=7, InterpolantAutomatonStates: 387, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 107.7s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 794 ConstructedInterpolants, 0 QuantifiedInterpolants, 3026 SizeOfPredicates, 0 NumberOfNonLiveVariables, 878 ConjunctsInSsa, 383 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 0/48020 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown