/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/eca-rers2012/Problem13_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 11:46:26,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 11:46:26,346 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 11:46:26,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 11:46:26,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 11:46:26,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 11:46:26,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 11:46:26,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 11:46:26,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 11:46:26,381 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 11:46:26,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 11:46:26,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 11:46:26,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 11:46:26,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 11:46:26,384 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 11:46:26,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 11:46:26,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 11:46:26,385 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 11:46:26,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 11:46:26,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 11:46:26,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 11:46:26,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 11:46:26,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 11:46:26,386 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 11:46:26,387 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 11:46:26,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 11:46:26,387 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 11:46:26,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 11:46:26,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 11:46:26,387 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 11:46:26,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 11:46:26,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 11:46:26,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 11:46:26,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 11:46:26,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 11:46:26,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 11:46:26,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 11:46:26,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 11:46:26,389 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 11:46:26,389 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 11:46:26,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 11:46:26,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 11:46:26,389 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 11:46:26,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 11:46:26,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 11:46:26,390 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 11:46:26,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 11:46:26,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 11:46:26,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 11:46:26,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 11:46:26,605 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 11:46:26,608 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 11:46:26,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label48.c [2023-12-22 11:46:27,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 11:46:28,025 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 11:46:28,025 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label48.c [2023-12-22 11:46:28,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c4a6d68/38a552f8a51042dc866abd9446916a1b/FLAG2ac184719 [2023-12-22 11:46:28,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c4a6d68/38a552f8a51042dc866abd9446916a1b [2023-12-22 11:46:28,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 11:46:28,080 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 11:46:28,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 11:46:28,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 11:46:28,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 11:46:28,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:46:28" (1/1) ... [2023-12-22 11:46:28,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1680dcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:28, skipping insertion in model container [2023-12-22 11:46:28,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:46:28" (1/1) ... [2023-12-22 11:46:28,219 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 11:46:28,424 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label48.c[1234,1247] [2023-12-22 11:46:29,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 11:46:29,369 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 11:46:29,379 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label48.c[1234,1247] [2023-12-22 11:46:29,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 11:46:29,824 INFO L206 MainTranslator]: Completed translation [2023-12-22 11:46:29,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29 WrapperNode [2023-12-22 11:46:29,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 11:46:29,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 11:46:29,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 11:46:29,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 11:46:29,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:29,899 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,072 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5582 [2023-12-22 11:46:30,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 11:46:30,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 11:46:30,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 11:46:30,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 11:46:30,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,174 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]. [2023-12-22 11:46:30,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 11:46:30,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 11:46:30,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 11:46:30,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 11:46:30,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (1/1) ... [2023-12-22 11:46:30,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 11:46:30,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 11:46:30,405 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) [2023-12-22 11:46:30,414 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 [2023-12-22 11:46:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 11:46:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 11:46:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 11:46:30,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 11:46:30,481 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 11:46:30,482 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 11:47:10,113 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 11:47:10,159 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 11:47:10,160 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 11:47:10,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:47:10 BoogieIcfgContainer [2023-12-22 11:47:10,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 11:47:10,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 11:47:10,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 11:47:10,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 11:47:10,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:46:28" (1/3) ... [2023-12-22 11:47:10,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cb0f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:47:10, skipping insertion in model container [2023-12-22 11:47:10,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:46:29" (2/3) ... [2023-12-22 11:47:10,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cb0f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:47:10, skipping insertion in model container [2023-12-22 11:47:10,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:47:10" (3/3) ... [2023-12-22 11:47:10,165 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label48.c [2023-12-22 11:47:10,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 11:47:10,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 11:47:10,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 11:47:10,236 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;@285cc426, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 11:47:10,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 11:47:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:47:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-22 11:47:10,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:47:10,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-22 11:47:10,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:47:10,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:47:10,250 INFO L85 PathProgramCache]: Analyzing trace with hash 326675475, now seen corresponding path program 1 times [2023-12-22 11:47:10,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:47:10,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852274283] [2023-12-22 11:47:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:47:10,260 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 [2023-12-22 11:47:10,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:47:10,265 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) [2023-12-22 11:47:10,270 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 [2023-12-22 11:47:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:47:10,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:47:10,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:47:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:47:10,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:47:10,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:47:10,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852274283] [2023-12-22 11:47:10,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852274283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:47:10,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:47:10,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:47:10,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102572630] [2023-12-22 11:47:10,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:47:10,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:47:10,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:47:10,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:47:10,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:47:10,440 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:48:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:48:00,437 INFO L93 Difference]: Finished difference Result 3002 states and 5661 transitions. [2023-12-22 11:48:00,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:48:00,439 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 [2023-12-22 11:48:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:48:00,459 INFO L225 Difference]: With dead ends: 3002 [2023-12-22 11:48:00,460 INFO L226 Difference]: Without dead ends: 1963 [2023-12-22 11:48:00,464 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 [2023-12-22 11:48:00,466 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1151 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.7s IncrementalHoareTripleChecker+Time [2023-12-22 11:48:00,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 947 Invalid, 3181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [545 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 49.7s Time] [2023-12-22 11:48:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2023-12-22 11:48:00,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1950. [2023-12-22 11:48:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1949 states have (on average 1.6541816316059517) internal successors, (3224), 1949 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:48:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3224 transitions. [2023-12-22 11:48:00,580 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3224 transitions. Word has length 5 [2023-12-22 11:48:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:48:00,581 INFO L495 AbstractCegarLoop]: Abstraction has 1950 states and 3224 transitions. [2023-12-22 11:48:00,581 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) [2023-12-22 11:48:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3224 transitions. [2023-12-22 11:48:00,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-22 11:48:00,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:48:00,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:48:00,588 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 [2023-12-22 11:48:00,785 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 [2023-12-22 11:48:00,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:48:00,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:48:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -135585286, now seen corresponding path program 1 times [2023-12-22 11:48:00,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:48:00,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193288916] [2023-12-22 11:48:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:48:00,790 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 [2023-12-22 11:48:00,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:48:00,791 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) [2023-12-22 11:48:00,799 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 [2023-12-22 11:48:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:48:00,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:48:00,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:48:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:48:01,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:48:01,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:48:01,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193288916] [2023-12-22 11:48:01,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193288916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:48:01,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:48:01,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:48:01,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23457232] [2023-12-22 11:48:01,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:48:01,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:48:01,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:48:01,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:48:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:48:01,018 INFO L87 Difference]: Start difference. First operand 1950 states and 3224 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:49:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:49:01,949 INFO L93 Difference]: Finished difference Result 5506 states and 9185 transitions. [2023-12-22 11:49:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:49:01,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-22 11:49:01,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:49:01,972 INFO L225 Difference]: With dead ends: 5506 [2023-12-22 11:49:01,972 INFO L226 Difference]: Without dead ends: 3557 [2023-12-22 11:49:01,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:49:01,976 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 778 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.7s IncrementalHoareTripleChecker+Time [2023-12-22 11:49:01,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1172 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 60.7s Time] [2023-12-22 11:49:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2023-12-22 11:49:02,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3547. [2023-12-22 11:49:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 3546 states have (on average 1.4359842075578115) internal successors, (5092), 3546 states have internal predecessors, (5092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:49:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 5092 transitions. [2023-12-22 11:49:02,027 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 5092 transitions. Word has length 76 [2023-12-22 11:49:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:49:02,028 INFO L495 AbstractCegarLoop]: Abstraction has 3547 states and 5092 transitions. [2023-12-22 11:49:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:49:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 5092 transitions. [2023-12-22 11:49:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-22 11:49:02,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:49:02,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:49:02,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-22 11:49:02,236 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 [2023-12-22 11:49:02,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:49:02,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:49:02,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1254694705, now seen corresponding path program 1 times [2023-12-22 11:49:02,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:49:02,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894512249] [2023-12-22 11:49:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:49:02,239 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 [2023-12-22 11:49:02,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:49:02,242 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) [2023-12-22 11:49:02,243 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 [2023-12-22 11:49:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:49:02,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:49:02,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:49:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:49:02,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:49:02,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:49:02,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894512249] [2023-12-22 11:49:02,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894512249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:49:02,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:49:02,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:49:02,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890328626] [2023-12-22 11:49:02,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:49:02,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:49:02,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:49:02,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:49:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:49:02,526 INFO L87 Difference]: Start difference. First operand 3547 states and 5092 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:49:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:49:50,512 INFO L93 Difference]: Finished difference Result 7885 states and 11083 transitions. [2023-12-22 11:49:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:49:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-22 11:49:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:49:50,538 INFO L225 Difference]: With dead ends: 7885 [2023-12-22 11:49:50,538 INFO L226 Difference]: Without dead ends: 4339 [2023-12-22 11:49:50,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:49:50,543 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 694 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.8s IncrementalHoareTripleChecker+Time [2023-12-22 11:49:50,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1176 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 47.8s Time] [2023-12-22 11:49:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2023-12-22 11:49:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 4334. [2023-12-22 11:49:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 1.368336025848142) internal successors, (5929), 4333 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:49:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 5929 transitions. [2023-12-22 11:49:50,629 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 5929 transitions. Word has length 106 [2023-12-22 11:49:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:49:50,630 INFO L495 AbstractCegarLoop]: Abstraction has 4334 states and 5929 transitions. [2023-12-22 11:49:50,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:49:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 5929 transitions. [2023-12-22 11:49:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-22 11:49:50,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:49:50,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:49:50,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 11:49:50,839 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 [2023-12-22 11:49:50,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:49:50,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:49:50,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1709854058, now seen corresponding path program 1 times [2023-12-22 11:49:50,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:49:50,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707223590] [2023-12-22 11:49:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:49:50,842 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 [2023-12-22 11:49:50,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:49:50,843 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) [2023-12-22 11:49:50,860 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 [2023-12-22 11:49:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:49:50,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 11:49:50,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:49:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:49:51,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:49:51,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:49:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707223590] [2023-12-22 11:49:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707223590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:49:51,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:49:51,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:49:51,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612165490] [2023-12-22 11:49:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:49:51,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:49:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:49:51,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:49:51,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:49:51,453 INFO L87 Difference]: Start difference. First operand 4334 states and 5929 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:50:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:50:39,784 INFO L93 Difference]: Finished difference Result 8667 states and 11857 transitions. [2023-12-22 11:50:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:50:39,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-12-22 11:50:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:50:39,803 INFO L225 Difference]: With dead ends: 8667 [2023-12-22 11:50:39,803 INFO L226 Difference]: Without dead ends: 4334 [2023-12-22 11:50:39,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:50:39,810 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.2s IncrementalHoareTripleChecker+Time [2023-12-22 11:50:39,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1217 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 48.2s Time] [2023-12-22 11:50:39,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2023-12-22 11:50:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4334. [2023-12-22 11:50:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 1.3591045465035771) internal successors, (5889), 4333 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:50:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 5889 transitions. [2023-12-22 11:50:39,862 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 5889 transitions. Word has length 116 [2023-12-22 11:50:39,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:50:39,863 INFO L495 AbstractCegarLoop]: Abstraction has 4334 states and 5889 transitions. [2023-12-22 11:50:39,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:50:39,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 5889 transitions. [2023-12-22 11:50:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-22 11:50:39,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:50:39,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:50:39,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 11:50:40,067 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 [2023-12-22 11:50:40,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:50:40,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:50:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash -72496212, now seen corresponding path program 1 times [2023-12-22 11:50:40,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:50:40,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677192160] [2023-12-22 11:50:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:50:40,070 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 [2023-12-22 11:50:40,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:50:40,071 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) [2023-12-22 11:50:40,073 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 [2023-12-22 11:50:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:50:40,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 11:50:40,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:50:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:50:40,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 11:50:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:50:44,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:50:44,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677192160] [2023-12-22 11:50:44,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677192160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 11:50:44,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 11:50:44,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-22 11:50:44,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498447410] [2023-12-22 11:50:44,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 11:50:44,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 11:50:44,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:50:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 11:50:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-22 11:50:44,744 INFO L87 Difference]: Start difference. First operand 4334 states and 5889 transitions. Second operand has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:53:08,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:54:21,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:56:19,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:56:53,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:57:04,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:57:04,732 INFO L93 Difference]: Finished difference Result 12875 states and 20278 transitions. [2023-12-22 11:57:04,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 11:57:04,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-22 11:57:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:57:04,783 INFO L225 Difference]: With dead ends: 12875 [2023-12-22 11:57:04,784 INFO L226 Difference]: Without dead ends: 10926 [2023-12-22 11:57:04,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-22 11:57:04,787 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 4615 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 9236 mSolverCounterSat, 3756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 336.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4615 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 12992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3756 IncrementalHoareTripleChecker+Valid, 9236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 379.2s IncrementalHoareTripleChecker+Time [2023-12-22 11:57:04,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4615 Valid, 958 Invalid, 12992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3756 Valid, 9236 Invalid, 0 Unknown, 0 Unchecked, 379.2s Time] [2023-12-22 11:57:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10926 states. [2023-12-22 11:57:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10926 to 5939. [2023-12-22 11:57:04,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5938 states have (on average 1.3048164365106096) internal successors, (7748), 5938 states have internal predecessors, (7748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:57:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 7748 transitions. [2023-12-22 11:57:04,869 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 7748 transitions. Word has length 130 [2023-12-22 11:57:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:57:04,875 INFO L495 AbstractCegarLoop]: Abstraction has 5939 states and 7748 transitions. [2023-12-22 11:57:04,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:57:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 7748 transitions. [2023-12-22 11:57:04,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-22 11:57:04,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:57:04,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:57:04,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-22 11:57:05,081 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 [2023-12-22 11:57:05,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:57:05,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:57:05,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1590714328, now seen corresponding path program 1 times [2023-12-22 11:57:05,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:57:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098366587] [2023-12-22 11:57:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:57:05,084 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 [2023-12-22 11:57:05,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:57:05,085 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) [2023-12-22 11:57:05,103 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 [2023-12-22 11:57:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:57:05,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 11:57:05,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:57:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:57:07,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 11:57:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:57:22,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:57:22,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098366587] [2023-12-22 11:57:22,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098366587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 11:57:22,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 11:57:22,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 11:57:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088850173] [2023-12-22 11:57:22,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 11:57:22,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 11:57:22,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:57:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 11:57:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 11:57:22,521 INFO L87 Difference]: Start difference. First operand 5939 states and 7748 transitions. Second operand has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:57:43,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:58:50,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:59:59,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:00:29,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:00:29,808 INFO L93 Difference]: Finished difference Result 19057 states and 26188 transitions. [2023-12-22 12:00:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 12:00:29,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 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 198 [2023-12-22 12:00:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:00:29,830 INFO L225 Difference]: With dead ends: 19057 [2023-12-22 12:00:29,830 INFO L226 Difference]: Without dead ends: 10690 [2023-12-22 12:00:29,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:00:29,838 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 6124 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 12658 mSolverCounterSat, 2243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6124 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 14901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2243 IncrementalHoareTripleChecker+Valid, 12658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:00:29,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6124 Valid, 1509 Invalid, 14901 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2243 Valid, 12658 Invalid, 0 Unknown, 0 Unchecked, 185.8s Time] [2023-12-22 12:00:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10690 states. [2023-12-22 12:00:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10690 to 7415. [2023-12-22 12:00:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7415 states, 7414 states have (on average 1.236309684380901) internal successors, (9166), 7414 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:00:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7415 states to 7415 states and 9166 transitions. [2023-12-22 12:00:29,953 INFO L78 Accepts]: Start accepts. Automaton has 7415 states and 9166 transitions. Word has length 198 [2023-12-22 12:00:29,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:00:29,954 INFO L495 AbstractCegarLoop]: Abstraction has 7415 states and 9166 transitions. [2023-12-22 12:00:29,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:00:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 7415 states and 9166 transitions. [2023-12-22 12:00:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-22 12:00:29,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:00:29,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:00:29,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 12:00:30,166 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 [2023-12-22 12:00:30,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:00:30,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:00:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1297162409, now seen corresponding path program 1 times [2023-12-22 12:00:30,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:00:30,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354973471] [2023-12-22 12:00:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:00:30,168 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 [2023-12-22 12:00:30,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:00:30,169 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) [2023-12-22 12:00:30,172 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 [2023-12-22 12:00:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:00:30,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:00:30,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:00:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:00:30,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:00:30,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:00:30,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354973471] [2023-12-22 12:00:30,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354973471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:00:30,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:00:30,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:00:30,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62157799] [2023-12-22 12:00:30,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:00:30,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:00:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:00:30,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:00:30,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:00:30,546 INFO L87 Difference]: Start difference. First operand 7415 states and 9166 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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... [2023-12-22 12:01:01,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:01:01,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:01:01,629 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 445 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:01:01,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1099 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 30.9s Time] [2023-12-22 12:01:01,631 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 12:01:01,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 12:01:01,644 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 [2023-12-22 12:01:01,644 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 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 12:01:01,831 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 [2023-12-22 12:01:01,833 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (7415states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (9070 states constructed, input type IntersectNwa). [2023-12-22 12:01:01,836 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:01:01,838 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 12:01:01,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:01:01 BoogieIcfgContainer [2023-12-22 12:01:01,839 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 12:01:01,839 INFO L158 Benchmark]: Toolchain (without parser) took 873759.67ms. Allocated memory was 200.3MB in the beginning and 619.7MB in the end (delta: 419.4MB). Free memory was 132.1MB in the beginning and 460.0MB in the end (delta: -328.0MB). Peak memory consumption was 419.9MB. Max. memory is 8.0GB. [2023-12-22 12:01:01,840 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 152.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 12:01:01,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1743.72ms. Allocated memory was 200.3MB in the beginning and 286.3MB in the end (delta: 86.0MB). Free memory was 131.9MB in the beginning and 180.6MB in the end (delta: -48.8MB). Peak memory consumption was 170.3MB. Max. memory is 8.0GB. [2023-12-22 12:01:01,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 245.87ms. Allocated memory is still 286.3MB. Free memory was 180.6MB in the beginning and 200.1MB in the end (delta: -19.4MB). Peak memory consumption was 71.8MB. Max. memory is 8.0GB. [2023-12-22 12:01:01,840 INFO L158 Benchmark]: Boogie Preprocessor took 306.07ms. Allocated memory was 286.3MB in the beginning and 456.1MB in the end (delta: 169.9MB). Free memory was 200.1MB in the beginning and 345.8MB in the end (delta: -145.8MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2023-12-22 12:01:01,840 INFO L158 Benchmark]: RCFGBuilder took 39780.24ms. Allocated memory was 456.1MB in the beginning and 619.7MB in the end (delta: 163.6MB). Free memory was 345.8MB in the beginning and 247.3MB in the end (delta: 98.5MB). Peak memory consumption was 268.4MB. Max. memory is 8.0GB. [2023-12-22 12:01:01,841 INFO L158 Benchmark]: TraceAbstraction took 831677.56ms. Allocated memory is still 619.7MB. Free memory was 246.2MB in the beginning and 460.0MB in the end (delta: -213.8MB). Peak memory consumption was 113.9MB. Max. memory is 8.0GB. [2023-12-22 12:01:01,841 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 152.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1743.72ms. Allocated memory was 200.3MB in the beginning and 286.3MB in the end (delta: 86.0MB). Free memory was 131.9MB in the beginning and 180.6MB in the end (delta: -48.8MB). Peak memory consumption was 170.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 245.87ms. Allocated memory is still 286.3MB. Free memory was 180.6MB in the beginning and 200.1MB in the end (delta: -19.4MB). Peak memory consumption was 71.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 306.07ms. Allocated memory was 286.3MB in the beginning and 456.1MB in the end (delta: 169.9MB). Free memory was 200.1MB in the beginning and 345.8MB in the end (delta: -145.8MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * RCFGBuilder took 39780.24ms. Allocated memory was 456.1MB in the beginning and 619.7MB in the end (delta: 163.6MB). Free memory was 345.8MB in the beginning and 247.3MB in the end (delta: 98.5MB). Peak memory consumption was 268.4MB. Max. memory is 8.0GB. * TraceAbstraction took 831677.56ms. Allocated memory is still 619.7MB. Free memory was 246.2MB in the beginning and 460.0MB in the end (delta: -213.8MB). Peak memory consumption was 113.9MB. 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: 40]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 40). Cancelled while NwaCegarLoop was constructing difference of abstraction (7415states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (9070 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 831.6s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 805.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14485 SdHoareTripleChecker+Valid, 802.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14485 mSDsluCounter, 8078 SdHoareTripleChecker+Invalid, 687.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2276 mSDsCounter, 7479 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33843 IncrementalHoareTripleChecker+Invalid, 41322 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7479 mSolverCounterUnsat, 5802 mSDtfsCounter, 33843 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1161 GetRequests, 1140 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7415occurred in iteration=6, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 8290 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 835 NumberOfCodeBlocks, 835 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1154 ConstructedInterpolants, 0 QuantifiedInterpolants, 9782 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1164 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 125/265 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