/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/phases_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:24:56,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:24:56,668 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 22:24:56,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:24:56,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:24:56,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:24:56,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:24:56,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:24:56,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:24:56,687 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:24:56,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:24:56,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:24:56,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:24:56,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:24:56,690 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:24:56,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:24:56,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:24:56,691 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:24:56,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:24:56,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:24:56,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:24:56,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:24:56,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:24:56,692 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:24:56,692 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:24:56,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:24:56,692 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:24:56,693 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:24:56,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:24:56,693 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:24:56,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:24:56,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:24:56,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:24:56,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:24:56,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:24:56,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:24:56,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:24:56,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:24:56,694 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:24:56,695 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:24:56,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:24:56,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:24:56,695 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:24:56,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:24:56,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:24:56,695 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:24:56,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:24:56,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:24:56,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:24:56,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:24:56,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:24:56,896 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:24:56,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_1-2.c [2023-12-24 22:24:57,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:24:57,992 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:24:57,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_1-2.c [2023-12-24 22:24:57,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55723028/9e2cc3dddeef4dfb95c0eb6035d17535/FLAG5e8f7c04d [2023-12-24 22:24:58,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55723028/9e2cc3dddeef4dfb95c0eb6035d17535 [2023-12-24 22:24:58,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:24:58,013 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:24:58,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:24:58,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:24:58,018 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:24:58,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239b895c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58, skipping insertion in model container [2023-12-24 22:24:58,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,032 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:24:58,122 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/phases_1-2.c[322,335] [2023-12-24 22:24:58,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:24:58,142 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:24:58,149 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/phases_1-2.c[322,335] [2023-12-24 22:24:58,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:24:58,158 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:24:58,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58 WrapperNode [2023-12-24 22:24:58,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:24:58,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:24:58,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:24:58,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:24:58,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,177 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2023-12-24 22:24:58,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:24:58,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:24:58,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:24:58,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:24:58,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,185 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,191 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 22:24:58,191 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,191 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:24:58,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:24:58,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:24:58,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:24:58,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (1/1) ... [2023-12-24 22:24:58,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:24:58,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:24:58,218 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 22:24:58,234 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 22:24:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:24:58,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:24:58,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:24:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:24:58,283 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:24:58,284 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:24:58,362 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:24:58,395 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:24:58,395 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 22:24:58,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:24:58 BoogieIcfgContainer [2023-12-24 22:24:58,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:24:58,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:24:58,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:24:58,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:24:58,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:24:58" (1/3) ... [2023-12-24 22:24:58,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b270128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:24:58, skipping insertion in model container [2023-12-24 22:24:58,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:24:58" (2/3) ... [2023-12-24 22:24:58,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b270128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:24:58, skipping insertion in model container [2023-12-24 22:24:58,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:24:58" (3/3) ... [2023-12-24 22:24:58,405 INFO L112 eAbstractionObserver]: Analyzing ICFG phases_1-2.c [2023-12-24 22:24:58,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:24:58,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:24:58,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:24:58,447 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;@7a90c636, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:24:58,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:24:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states 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 22:24:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-24 22:24:58,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:24:58,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-24 22:24:58,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:24:58,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:24:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash 62462887, now seen corresponding path program 1 times [2023-12-24 22:24:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:24:58,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70455750] [2023-12-24 22:24:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:24:58,465 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 22:24:58,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:24:58,466 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 22:24:58,469 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 22:24:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:24:58,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 22:24:58,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:24:58,520 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 22:24:58,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:24:58,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:24:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70455750] [2023-12-24 22:24:58,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70455750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:24:58,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:24:58,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:24:58,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250230768] [2023-12-24 22:24:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:24:58,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 22:24:58,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:24:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 22:24:58,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 22:24:58,552 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) 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 22:24:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:24:58,574 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2023-12-24 22:24:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 22:24:58,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) 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 22:24:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:24:58,582 INFO L225 Difference]: With dead ends: 15 [2023-12-24 22:24:58,582 INFO L226 Difference]: Without dead ends: 7 [2023-12-24 22:24:58,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 22:24:58,586 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:24:58,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:24:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-24 22:24:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-24 22:24:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:24:58,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-12-24 22:24:58,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2023-12-24 22:24:58,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:24:58,603 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-12-24 22:24:58,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) 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 22:24:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-24 22:24:58,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-24 22:24:58,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:24:58,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-24 22:24:58,608 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 22:24:58,806 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 22:24:58,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:24:58,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:24:58,807 INFO L85 PathProgramCache]: Analyzing trace with hash 62164977, now seen corresponding path program 1 times [2023-12-24 22:24:58,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:24:58,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878218807] [2023-12-24 22:24:58,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:24:58,807 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 22:24:58,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:24:58,808 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 22:24:58,810 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 22:24:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:24:58,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 22:24:58,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:24:58,853 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 22:24:58,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:24:58,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:24:58,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878218807] [2023-12-24 22:24:58,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878218807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:24:58,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:24:58,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:24:58,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353882782] [2023-12-24 22:24:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:24:58,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 22:24:58,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:24:58,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 22:24:58,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 22:24:58,856 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. 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 22:24:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:24:58,882 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2023-12-24 22:24:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 22:24:58,882 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 22:24:58,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:24:58,883 INFO L225 Difference]: With dead ends: 15 [2023-12-24 22:24:58,883 INFO L226 Difference]: Without dead ends: 9 [2023-12-24 22:24:58,883 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 22:24:58,884 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:24:58,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:24:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-24 22:24:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-24 22:24:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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 22:24:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-12-24 22:24:58,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2023-12-24 22:24:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:24:58,887 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-12-24 22:24:58,887 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 22:24:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-12-24 22:24:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-24 22:24:58,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:24:58,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:24:58,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 22:24:59,092 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 22:24:59,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:24:59,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:24:59,092 INFO L85 PathProgramCache]: Analyzing trace with hash -338656492, now seen corresponding path program 1 times [2023-12-24 22:24:59,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:24:59,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001245910] [2023-12-24 22:24:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:24:59,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:24:59,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:24:59,094 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 22:24:59,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 22:24:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:24:59,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 22:24:59,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:24:59,139 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 22:24:59,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:24:59,165 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 22:24:59,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:24:59,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001245910] [2023-12-24 22:24:59,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001245910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:24:59,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:24:59,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-24 22:24:59,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152710500] [2023-12-24 22:24:59,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:24:59,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 22:24:59,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:24:59,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 22:24:59,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:24:59,173 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:24:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:24:59,221 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2023-12-24 22:24:59,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 22:24:59,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-24 22:24:59,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:24:59,222 INFO L225 Difference]: With dead ends: 19 [2023-12-24 22:24:59,222 INFO L226 Difference]: Without dead ends: 13 [2023-12-24 22:24:59,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 22:24:59,225 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:24:59,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:24:59,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-24 22:24:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-12-24 22:24:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 22:24:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-12-24 22:24:59,231 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2023-12-24 22:24:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:24:59,231 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-12-24 22:24:59,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:24:59,231 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-12-24 22:24:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-24 22:24:59,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:24:59,232 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-12-24 22:24:59,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-24 22:24:59,433 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 22:24:59,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:24:59,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:24:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 28316188, now seen corresponding path program 1 times [2023-12-24 22:24:59,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:24:59,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777990204] [2023-12-24 22:24:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:24:59,435 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 22:24:59,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:24:59,436 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 22:24:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:24:59,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 22:24:59,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:24:59,460 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 22:24:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:24:59,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:24:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:24:59,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:24:59,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777990204] [2023-12-24 22:24:59,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777990204] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:24:59,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:24:59,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-24 22:24:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514684130] [2023-12-24 22:24:59,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:24:59,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 22:24:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:24:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 22:24:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 22:24:59,540 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 22:24:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:24:59,607 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-12-24 22:24:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 22:24:59,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-24 22:24:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:24:59,609 INFO L225 Difference]: With dead ends: 27 [2023-12-24 22:24:59,611 INFO L226 Difference]: Without dead ends: 20 [2023-12-24 22:24:59,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-24 22:24:59,616 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:24:59,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:24:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-24 22:24:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-24 22:24:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 22:24:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-12-24 22:24:59,622 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 11 [2023-12-24 22:24:59,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:24:59,622 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-12-24 22:24:59,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 22:24:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-12-24 22:24:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-24 22:24:59,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:24:59,622 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2023-12-24 22:24:59,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 22:24:59,824 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 22:24:59,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:24:59,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:24:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1927939800, now seen corresponding path program 2 times [2023-12-24 22:24:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:24:59,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378278272] [2023-12-24 22:24:59,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:24:59,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:24:59,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:24:59,827 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 22:24:59,829 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 22:24:59,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:24:59,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:24:59,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 22:24:59,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:24:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:24:59,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:25:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-24 22:25:00,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:25:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378278272] [2023-12-24 22:25:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378278272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:25:00,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:25:00,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 13 [2023-12-24 22:25:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602774200] [2023-12-24 22:25:00,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:25:00,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 22:25:00,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:25:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 22:25:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:25:00,089 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 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 22:25:00,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:25:00,193 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-12-24 22:25:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 22:25:00,193 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-24 22:25:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:25:00,193 INFO L225 Difference]: With dead ends: 34 [2023-12-24 22:25:00,193 INFO L226 Difference]: Without dead ends: 25 [2023-12-24 22:25:00,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-24 22:25:00,194 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:25:00,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:25:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-24 22:25:00,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-12-24 22:25:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:25:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-12-24 22:25:00,198 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2023-12-24 22:25:00,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:25:00,198 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-12-24 22:25:00,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 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 22:25:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-12-24 22:25:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-24 22:25:00,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:25:00,199 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1] [2023-12-24 22:25:00,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 22:25:00,400 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 22:25:00,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:25:00,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:25:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash 952906507, now seen corresponding path program 3 times [2023-12-24 22:25:00,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:25:00,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305026095] [2023-12-24 22:25:00,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:25:00,402 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 22:25:00,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:25:00,403 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 22:25:00,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 22:25:00,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 22:25:00,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:25:00,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 22:25:00,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:25:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-24 22:25:00,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:25:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-24 22:25:00,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:25:00,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305026095] [2023-12-24 22:25:00,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305026095] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:25:00,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:25:00,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2023-12-24 22:25:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247070332] [2023-12-24 22:25:00,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:25:00,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 22:25:00,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:25:00,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 22:25:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:25:00,487 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 22:25:00,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:25:00,531 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2023-12-24 22:25:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 22:25:00,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 21 [2023-12-24 22:25:00,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:25:00,545 INFO L225 Difference]: With dead ends: 45 [2023-12-24 22:25:00,545 INFO L226 Difference]: Without dead ends: 41 [2023-12-24 22:25:00,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2023-12-24 22:25:00,546 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:25:00,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:25:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-24 22:25:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2023-12-24 22:25:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:25:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-12-24 22:25:00,561 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 21 [2023-12-24 22:25:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:25:00,561 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-12-24 22:25:00,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 22:25:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-12-24 22:25:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 22:25:00,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:25:00,562 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 4, 1, 1, 1, 1, 1] [2023-12-24 22:25:00,566 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 22:25:00,765 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 22:25:00,765 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:25:00,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:25:00,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1392037434, now seen corresponding path program 4 times [2023-12-24 22:25:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:25:00,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947487672] [2023-12-24 22:25:00,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:25:00,766 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 22:25:00,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:25:00,767 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 22:25:00,767 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 22:25:00,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:25:00,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:25:00,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 22:25:00,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:25:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-24 22:25:00,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:25:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-24 22:25:00,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:25:00,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947487672] [2023-12-24 22:25:00,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947487672] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:25:00,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:25:00,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-24 22:25:00,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173009583] [2023-12-24 22:25:00,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:25:00,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 22:25:00,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:25:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 22:25:00,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-24 22:25:00,968 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 22:25:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:25:01,245 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2023-12-24 22:25:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 22:25:01,246 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 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 22:25:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:25:01,246 INFO L225 Difference]: With dead ends: 63 [2023-12-24 22:25:01,246 INFO L226 Difference]: Without dead ends: 48 [2023-12-24 22:25:01,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2023-12-24 22:25:01,247 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:25:01,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:25:01,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-24 22:25:01,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-24 22:25:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 22:25:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2023-12-24 22:25:01,253 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 27 [2023-12-24 22:25:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:25:01,254 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2023-12-24 22:25:01,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 22:25:01,254 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2023-12-24 22:25:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-24 22:25:01,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:25:01,254 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1] [2023-12-24 22:25:01,263 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 22:25:01,457 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 22:25:01,457 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:25:01,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:25:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1296954712, now seen corresponding path program 5 times [2023-12-24 22:25:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:25:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739899409] [2023-12-24 22:25:01,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:25:01,458 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 22:25:01,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:25:01,459 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 22:25:01,459 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 22:25:01,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-12-24 22:25:01,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:25:01,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 22:25:01,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:25:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-24 22:25:01,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:25:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-24 22:25:02,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:25:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739899409] [2023-12-24 22:25:02,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739899409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:25:02,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:25:02,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2023-12-24 22:25:02,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000499777] [2023-12-24 22:25:02,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:25:02,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-24 22:25:02,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:25:02,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-24 22:25:02,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1009, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 22:25:02,326 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 22:25:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:25:04,017 INFO L93 Difference]: Finished difference Result 139 states and 187 transitions. [2023-12-24 22:25:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-24 22:25:04,018 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 0 states have call successors, (0), 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 47 [2023-12-24 22:25:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:25:04,019 INFO L225 Difference]: With dead ends: 139 [2023-12-24 22:25:04,019 INFO L226 Difference]: Without dead ends: 124 [2023-12-24 22:25:04,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1999, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 22:25:04,020 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 68 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:25:04,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 25 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:25:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-24 22:25:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-24 22:25:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.056910569105691) internal successors, (130), 123 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:25:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2023-12-24 22:25:04,041 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 47 [2023-12-24 22:25:04,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:25:04,042 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 130 transitions. [2023-12-24 22:25:04,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 37 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 22:25:04,042 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 130 transitions. [2023-12-24 22:25:04,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 22:25:04,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:25:04,043 INFO L195 NwaCegarLoop]: trace histogram [41, 37, 4, 1, 1, 1, 1, 1] [2023-12-24 22:25:04,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 22:25:04,256 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 22:25:04,256 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:25:04,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:25:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1256353132, now seen corresponding path program 6 times [2023-12-24 22:25:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:25:04,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643258564] [2023-12-24 22:25:04,257 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:25:04,258 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 22:25:04,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:25:04,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:25:04,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 22:25:04,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-24 22:25:04,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:25:04,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 22:25:04,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:25:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 333 proven. 16 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2023-12-24 22:25:04,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:25:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 333 proven. 16 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2023-12-24 22:25:04,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:25:04,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643258564] [2023-12-24 22:25:04,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643258564] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:25:04,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:25:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-12-24 22:25:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931074694] [2023-12-24 22:25:04,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:25:04,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 22:25:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:25:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 22:25:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-24 22:25:04,441 INFO L87 Difference]: Start difference. First operand 124 states and 130 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:25:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:25:04,628 INFO L93 Difference]: Finished difference Result 229 states and 256 transitions. [2023-12-24 22:25:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 22:25:04,629 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-24 22:25:04,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:25:04,630 INFO L225 Difference]: With dead ends: 229 [2023-12-24 22:25:04,630 INFO L226 Difference]: Without dead ends: 225 [2023-12-24 22:25:04,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=272, Unknown=0, NotChecked=0, Total=462 [2023-12-24 22:25:04,630 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:25:04,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 7 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:25:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-24 22:25:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 136. [2023-12-24 22:25:04,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0962962962962963) internal successors, (148), 135 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:25:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2023-12-24 22:25:04,648 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 87 [2023-12-24 22:25:04,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:25:04,648 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2023-12-24 22:25:04,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:25:04,648 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2023-12-24 22:25:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-24 22:25:04,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:25:04,649 INFO L195 NwaCegarLoop]: trace histogram [47, 37, 10, 1, 1, 1, 1, 1] [2023-12-24 22:25:04,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 22:25:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:25:04,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:25:04,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:25:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash 111371314, now seen corresponding path program 7 times [2023-12-24 22:25:04,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:25:04,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388150294] [2023-12-24 22:25:04,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:25:04,853 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 22:25:04,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:25:04,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:25:04,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 22:25:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:25:04,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 22:25:04,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:25:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 722 proven. 1406 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 22:25:05,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:25:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 722 proven. 1406 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 22:25:07,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:25:07,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388150294] [2023-12-24 22:25:07,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388150294] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:25:07,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:25:07,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77 [2023-12-24 22:25:07,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136875782] [2023-12-24 22:25:07,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:25:07,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-24 22:25:07,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:25:07,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-24 22:25:07,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1597, Invalid=4409, Unknown=0, NotChecked=0, Total=6006 [2023-12-24 22:25:07,433 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 77 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 22:25:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:25:16,114 INFO L93 Difference]: Finished difference Result 347 states and 411 transitions. [2023-12-24 22:25:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-24 22:25:16,124 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 77 states have internal predecessors, (160), 0 states have call successors, (0), 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 22:25:16,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:25:16,125 INFO L225 Difference]: With dead ends: 347 [2023-12-24 22:25:16,125 INFO L226 Difference]: Without dead ends: 250 [2023-12-24 22:25:16,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=4483, Invalid=8627, Unknown=0, NotChecked=0, Total=13110 [2023-12-24 22:25:16,128 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 3118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:25:16,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 3118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:25:16,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-24 22:25:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 216. [2023-12-24 22:25:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0604651162790697) internal successors, (228), 215 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:25:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 228 transitions. [2023-12-24 22:25:16,151 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 228 transitions. Word has length 99 [2023-12-24 22:25:16,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:25:16,151 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 228 transitions. [2023-12-24 22:25:16,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 77 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 22:25:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 228 transitions. [2023-12-24 22:25:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-24 22:25:16,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:25:16,153 INFO L195 NwaCegarLoop]: trace histogram [87, 77, 10, 1, 1, 1, 1, 1] [2023-12-24 22:25:16,158 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 (11)] Ended with exit code 0 [2023-12-24 22:25:16,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:25:16,358 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:25:16,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:25:16,359 INFO L85 PathProgramCache]: Analyzing trace with hash 751036074, now seen corresponding path program 8 times [2023-12-24 22:25:16,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:25:16,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377635448] [2023-12-24 22:25:16,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:25:16,359 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 22:25:16,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:25:16,361 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:25:16,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 22:25:16,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:25:16,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:25:16,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-24 22:25:16,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:25:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 1482 proven. 6006 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 22:25:18,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:25:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 1482 proven. 6006 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 22:25:25,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:25:25,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377635448] [2023-12-24 22:25:25,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377635448] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:25:25,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:25:25,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 157 [2023-12-24 22:25:25,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727686045] [2023-12-24 22:25:25,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:25:25,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2023-12-24 22:25:25,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:25:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2023-12-24 22:25:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6397, Invalid=18409, Unknown=0, NotChecked=0, Total=24806 [2023-12-24 22:25:25,767 INFO L87 Difference]: Start difference. First operand 216 states and 228 transitions. Second operand has 158 states, 158 states have (on average 2.0253164556962027) internal successors, (320), 157 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 22:26:27,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:26:27,181 INFO L93 Difference]: Finished difference Result 507 states and 611 transitions. [2023-12-24 22:26:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-12-24 22:26:27,182 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 2.0253164556962027) internal successors, (320), 157 states have internal predecessors, (320), 0 states have call successors, (0), 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 179 [2023-12-24 22:26:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:26:27,184 INFO L225 Difference]: With dead ends: 507 [2023-12-24 22:26:27,184 INFO L226 Difference]: Without dead ends: 410 [2023-12-24 22:26:27,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 66.6s TimeCoverageRelationStatistics Valid=18563, Invalid=36427, Unknown=0, NotChecked=0, Total=54990 [2023-12-24 22:26:27,192 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 12637 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 12638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:26:27,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 12638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12637 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 22:26:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-24 22:26:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 376. [2023-12-24 22:26:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.0346666666666666) internal successors, (388), 375 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 22:26:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 388 transitions. [2023-12-24 22:26:27,229 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 388 transitions. Word has length 179 [2023-12-24 22:26:27,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:26:27,230 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 388 transitions. [2023-12-24 22:26:27,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.0253164556962027) internal successors, (320), 157 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 22:26:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 388 transitions. [2023-12-24 22:26:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-24 22:26:27,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:26:27,234 INFO L195 NwaCegarLoop]: trace histogram [167, 157, 10, 1, 1, 1, 1, 1] [2023-12-24 22:26:27,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 22:26:27,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:26:27,437 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:26:27,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:26:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 797563802, now seen corresponding path program 9 times [2023-12-24 22:26:27,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:26:27,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563092434] [2023-12-24 22:26:27,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:26:27,438 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 22:26:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:26:27,439 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:26:27,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 22:26:27,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-12-24 22:26:27,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:26:27,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 22:26:27,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:26:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 27889 backedges. 3297 proven. 100 refuted. 0 times theorem prover too weak. 24492 trivial. 0 not checked. [2023-12-24 22:26:27,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:26:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 27889 backedges. 3297 proven. 100 refuted. 0 times theorem prover too weak. 24492 trivial. 0 not checked. [2023-12-24 22:26:27,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:26:27,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563092434] [2023-12-24 22:26:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563092434] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:26:27,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:26:27,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2023-12-24 22:26:27,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280730716] [2023-12-24 22:26:27,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:26:27,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 22:26:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:26:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 22:26:27,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-12-24 22:26:27,919 INFO L87 Difference]: Start difference. First operand 376 states and 388 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:26:28,784 INFO L93 Difference]: Finished difference Result 517 states and 574 transitions. [2023-12-24 22:26:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 22:26:28,786 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2023-12-24 22:26:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:26:28,788 INFO L225 Difference]: With dead ends: 517 [2023-12-24 22:26:28,788 INFO L226 Difference]: Without dead ends: 513 [2023-12-24 22:26:28,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=814, Invalid=1256, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 22:26:28,788 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 51 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:26:28,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 15 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:26:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-12-24 22:26:28,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 400. [2023-12-24 22:26:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.06265664160401) internal successors, (424), 399 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 22:26:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 424 transitions. [2023-12-24 22:26:28,829 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 424 transitions. Word has length 339 [2023-12-24 22:26:28,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:26:28,830 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 424 transitions. [2023-12-24 22:26:28,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:26:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 424 transitions. [2023-12-24 22:26:28,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-24 22:26:28,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:26:28,843 INFO L195 NwaCegarLoop]: trace histogram [179, 157, 22, 1, 1, 1, 1, 1] [2023-12-24 22:26:28,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 22:26:29,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:26:29,045 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:26:29,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:26:29,046 INFO L85 PathProgramCache]: Analyzing trace with hash 995676118, now seen corresponding path program 10 times [2023-12-24 22:26:29,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:26:29,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353659670] [2023-12-24 22:26:29,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:26:29,046 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 22:26:29,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:26:29,047 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:26:29,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 22:26:29,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:26:29,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:26:29,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 159 conjunts are in the unsatisfiable core [2023-12-24 22:26:29,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:26:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 32041 backedges. 6794 proven. 24806 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-24 22:26:37,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:27:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 32041 backedges. 6794 proven. 24806 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-24 22:27:06,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:27:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353659670] [2023-12-24 22:27:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353659670] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:27:06,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:27:06,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 317 [2023-12-24 22:27:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279435451] [2023-12-24 22:27:06,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:27:06,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 318 states [2023-12-24 22:27:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:27:06,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 318 interpolants. [2023-12-24 22:27:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25597, Invalid=75209, Unknown=0, NotChecked=0, Total=100806 [2023-12-24 22:27:06,616 INFO L87 Difference]: Start difference. First operand 400 states and 424 transitions. Second operand has 318 states, 318 states have (on average 2.0125786163522013) internal successors, (640), 317 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:34:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:34:38,803 INFO L93 Difference]: Finished difference Result 875 states and 1083 transitions. [2023-12-24 22:34:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2023-12-24 22:34:38,804 INFO L78 Accepts]: Start accepts. Automaton has has 318 states, 318 states have (on average 2.0125786163522013) internal successors, (640), 317 states have internal predecessors, (640), 0 states have call successors, (0), 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 363 [2023-12-24 22:34:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:34:38,806 INFO L225 Difference]: With dead ends: 875 [2023-12-24 22:34:38,806 INFO L226 Difference]: Without dead ends: 754 [2023-12-24 22:34:38,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 473 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12246 ImplicationChecksByTransitivity, 473.5s TimeCoverageRelationStatistics Valid=75523, Invalid=149627, Unknown=0, NotChecked=0, Total=225150 [2023-12-24 22:34:38,820 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 50877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 50878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:34:38,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 50878 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 50877 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-12-24 22:34:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-24 22:34:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 720. [2023-12-24 22:34:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.0347705146036161) internal successors, (744), 719 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 22:34:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 744 transitions. [2023-12-24 22:34:38,898 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 744 transitions. Word has length 363 [2023-12-24 22:34:38,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:34:38,898 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 744 transitions. [2023-12-24 22:34:38,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 318 states, 318 states have (on average 2.0125786163522013) internal successors, (640), 317 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:34:38,899 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 744 transitions. [2023-12-24 22:34:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2023-12-24 22:34:38,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:34:38,902 INFO L195 NwaCegarLoop]: trace histogram [339, 317, 22, 1, 1, 1, 1, 1] [2023-12-24 22:34:38,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 22:34:39,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:34:39,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:34:39,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:34:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1267784118, now seen corresponding path program 11 times [2023-12-24 22:34:39,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:34:39,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731512963] [2023-12-24 22:34:39,104 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:34:39,104 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 22:34:39,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:34:39,105 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:34:39,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 22:34:42,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 340 check-sat command(s) [2023-12-24 22:34:42,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:34:42,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 468 conjunts are in the unsatisfiable core [2023-12-24 22:34:42,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:35:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 114921 backedges. 13674 proven. 100806 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-24 22:35:14,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:37:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 114921 backedges. 13674 proven. 100806 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-24 22:37:45,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:37:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731512963] [2023-12-24 22:37:45,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731512963] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:37:45,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:37:45,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [319, 319] total 637 [2023-12-24 22:37:45,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897928216] [2023-12-24 22:37:45,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:37:45,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 638 states [2023-12-24 22:37:45,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:37:45,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 638 interpolants. [2023-12-24 22:37:45,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102397, Invalid=304009, Unknown=0, NotChecked=0, Total=406406 [2023-12-24 22:37:45,122 INFO L87 Difference]: Start difference. First operand 720 states and 744 transitions. Second operand has 638 states, 638 states have (on average 2.006269592476489) internal successors, (1280), 637 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-24 22:39:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2023-12-24 22:39:00,710 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 22:39:00,710 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:39:00,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1365 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 179.8s TimeCoverageRelationStatistics Valid=102397, Invalid=304009, Unknown=0, NotChecked=0, Total=406406 [2023-12-24 22:39:00,711 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 202567 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 202568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:39:00,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 202568 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1 Valid, 202567 Invalid, 0 Unknown, 0 Unchecked, 47.0s Time] [2023-12-24 22:39:00,712 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 22:39:00,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 22:39:00,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:39:00,915 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (720states) and FLOYD_HOARE automaton (currently 320 states, 638 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 638 known predicates. [2023-12-24 22:39:00,918 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1] [2023-12-24 22:39:00,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 22:39:00,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:39:00 BoogieIcfgContainer [2023-12-24 22:39:00,921 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 22:39:00,922 INFO L158 Benchmark]: Toolchain (without parser) took 842908.90ms. Allocated memory was 294.6MB in the beginning and 614.5MB in the end (delta: 319.8MB). Free memory was 253.1MB in the beginning and 361.3MB in the end (delta: -108.2MB). Peak memory consumption was 485.8MB. Max. memory is 8.0GB. [2023-12-24 22:39:00,922 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 190.8MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 22:39:00,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.36ms. Allocated memory is still 294.6MB. Free memory was 253.1MB in the beginning and 242.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 22:39:00,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.89ms. Allocated memory is still 294.6MB. Free memory was 242.1MB in the beginning and 240.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 22:39:00,923 INFO L158 Benchmark]: Boogie Preprocessor took 19.11ms. Allocated memory is still 294.6MB. Free memory was 240.5MB in the beginning and 238.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 22:39:00,923 INFO L158 Benchmark]: RCFGBuilder took 198.16ms. Allocated memory is still 294.6MB. Free memory was 238.9MB in the beginning and 227.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 22:39:00,923 INFO L158 Benchmark]: TraceAbstraction took 842524.34ms. Allocated memory was 294.6MB in the beginning and 614.5MB in the end (delta: 319.8MB). Free memory was 227.4MB in the beginning and 361.3MB in the end (delta: -133.9MB). Peak memory consumption was 460.6MB. Max. memory is 8.0GB. [2023-12-24 22:39:00,925 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 190.8MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 144.36ms. Allocated memory is still 294.6MB. Free memory was 253.1MB in the beginning and 242.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.89ms. Allocated memory is still 294.6MB. Free memory was 242.1MB in the beginning and 240.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.11ms. Allocated memory is still 294.6MB. Free memory was 240.5MB in the beginning and 238.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 198.16ms. Allocated memory is still 294.6MB. Free memory was 238.9MB in the beginning and 227.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 842524.34ms. Allocated memory was 294.6MB in the beginning and 614.5MB in the end (delta: 319.8MB). Free memory was 227.4MB in the beginning and 361.3MB in the end (delta: -133.9MB). Peak memory consumption was 460.6MB. 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 (720states) and FLOYD_HOARE automaton (currently 320 states, 638 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 638 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 842.5s, OverallIterations: 14, TraceHistogramMax: 339, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 601.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 63.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 154 mSDsluCounter, 700 SdHoareTripleChecker+Invalid, 51.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 644 mSDsCounter, 218 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 270599 IncrementalHoareTripleChecker+Invalid, 270817 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 218 mSolverCounterUnsat, 56 mSDtfsCounter, 270599 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4108 GetRequests, 2473 SyntacticMatches, 4 SemanticMatches, 1630 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16389 ImplicationChecksByTransitivity, 733.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=720occurred in iteration=13, InterpolantAutomatonStates: 690, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 317 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 233.7s InterpolantComputationTime, 1892 NumberOfCodeBlocks, 1544 NumberOfCodeBlocksAsserted, 418 NumberOfCheckSat, 3748 ConstructedInterpolants, 0 QuantifiedInterpolants, 16412 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2463 ConjunctsInSsa, 829 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 106894/373990 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