/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_loop_dep.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 16:55:38,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 16:55:38,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 16:55:38,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 16:55:38,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 16:55:38,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 16:55:38,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 16:55:38,700 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 16:55:38,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 16:55:38,703 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 16:55:38,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 16:55:38,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 16:55:38,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 16:55:38,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 16:55:38,705 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 16:55:38,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 16:55:38,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 16:55:38,706 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 16:55:38,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 16:55:38,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 16:55:38,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 16:55:38,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 16:55:38,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 16:55:38,707 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 16:55:38,707 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 16:55:38,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 16:55:38,707 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 16:55:38,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 16:55:38,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 16:55:38,707 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 16:55:38,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 16:55:38,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 16:55:38,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 16:55:38,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 16:55:38,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:55:38,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 16:55:38,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 16:55:38,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 16:55:38,709 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 16:55:38,709 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 16:55:38,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 16:55:38,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 16:55:38,709 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 16:55:38,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 16:55:38,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 16:55:38,710 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 16:55:38,710 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 16:55:38,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 16:55:38,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 16:55:38,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 16:55:38,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 16:55:38,904 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 16:55:38,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_loop_dep.i [2023-12-21 16:55:39,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 16:55:40,136 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 16:55:40,137 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_of_struct_loop_dep.i [2023-12-21 16:55:40,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557cceec8/0583ce3c1e3049dfb966344090b84959/FLAG24b01628d [2023-12-21 16:55:40,160 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557cceec8/0583ce3c1e3049dfb966344090b84959 [2023-12-21 16:55:40,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 16:55:40,163 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 16:55:40,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 16:55:40,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 16:55:40,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 16:55:40,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:55:40" (1/1) ... [2023-12-21 16:55:40,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9180e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:40, skipping insertion in model container [2023-12-21 16:55:40,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:55:40" (1/1) ... [2023-12-21 16:55:40,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 16:55:40,316 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_of_struct_loop_dep.i[817,830] [2023-12-21 16:55:40,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:55:41,147 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 16:55:41,156 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_of_struct_loop_dep.i[817,830] [2023-12-21 16:55:41,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:55:41,175 INFO L206 MainTranslator]: Completed translation [2023-12-21 16:55:41,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41 WrapperNode [2023-12-21 16:55:41,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 16:55:41,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 16:55:41,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 16:55:41,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 16:55:41,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,201 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2023-12-21 16:55:41,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 16:55:41,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 16:55:41,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 16:55:41,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 16:55:41,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,220 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-21 16:55:41,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 16:55:41,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 16:55:41,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 16:55:41,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 16:55:41,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (1/1) ... [2023-12-21 16:55:41,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:55:41,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 16:55:41,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 16:55:41,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 16:55:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 16:55:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 16:55:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 16:55:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 16:55:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 16:55:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 16:55:41,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 16:55:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 16:55:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 16:55:41,362 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 16:55:41,364 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 16:55:41,433 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 16:55:41,452 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 16:55:41,452 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 16:55:41,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:55:41 BoogieIcfgContainer [2023-12-21 16:55:41,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 16:55:41,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 16:55:41,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 16:55:41,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 16:55:41,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:55:40" (1/3) ... [2023-12-21 16:55:41,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d33f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:55:41, skipping insertion in model container [2023-12-21 16:55:41,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:55:41" (2/3) ... [2023-12-21 16:55:41,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d33f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:55:41, skipping insertion in model container [2023-12-21 16:55:41,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:55:41" (3/3) ... [2023-12-21 16:55:41,457 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_loop_dep.i [2023-12-21 16:55:41,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 16:55:41,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 16:55:41,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 16:55:41,501 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;@749b59a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 16:55:41,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 16:55:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 16:55:41,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:55:41,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 16:55:41,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:55:41,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:55:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1939488160, now seen corresponding path program 1 times [2023-12-21 16:55:41,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:55:41,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615570941] [2023-12-21 16:55:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:55:41,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:41,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:55:41,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:55:41,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 16:55:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:55:41,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 16:55:41,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:55:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:41,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:55:41,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:55:41,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615570941] [2023-12-21 16:55:41,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615570941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:55:41,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:55:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:55:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567643797] [2023-12-21 16:55:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:55:41,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 16:55:41,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:55:41,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 16:55:41,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:55:41,627 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:55:41,673 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2023-12-21 16:55:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 16:55:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-21 16:55:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:55:41,679 INFO L225 Difference]: With dead ends: 30 [2023-12-21 16:55:41,679 INFO L226 Difference]: Without dead ends: 18 [2023-12-21 16:55:41,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:55:41,683 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:55:41,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 12 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:55:41,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-21 16:55:41,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2023-12-21 16:55:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2023-12-21 16:55:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-21 16:55:41,705 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2023-12-21 16:55:41,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:55:41,705 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-21 16:55:41,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:41,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-21 16:55:41,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 16:55:41,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:55:41,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:55:41,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 16:55:41,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:41,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:55:41,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:55:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1171574963, now seen corresponding path program 1 times [2023-12-21 16:55:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:55:41,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45988749] [2023-12-21 16:55:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:55:41,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:41,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:55:41,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:55:41,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 16:55:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:55:41,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:55:41,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:55:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:41,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:55:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:41,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:55:41,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45988749] [2023-12-21 16:55:41,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45988749] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:55:41,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:55:41,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 16:55:41,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56625289] [2023-12-21 16:55:41,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:55:41,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 16:55:41,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:55:41,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 16:55:41,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:55:41,997 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) [2023-12-21 16:55:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:55:42,096 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2023-12-21 16:55:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:55:42,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) Word has length 7 [2023-12-21 16:55:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:55:42,098 INFO L225 Difference]: With dead ends: 48 [2023-12-21 16:55:42,098 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 16:55:42,098 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 [2023-12-21 16:55:42,099 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:55:42,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 22 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:55:42,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 16:55:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2023-12-21 16:55:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:42,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-21 16:55:42,110 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2023-12-21 16:55:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:55:42,110 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-21 16:55:42,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) [2023-12-21 16:55:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-21 16:55:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 16:55:42,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:55:42,111 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-12-21 16:55:42,120 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 [2023-12-21 16:55:42,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:42,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:55:42,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:55:42,312 INFO L85 PathProgramCache]: Analyzing trace with hash -153075936, now seen corresponding path program 2 times [2023-12-21 16:55:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:55:42,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626339003] [2023-12-21 16:55:42,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:55:42,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:42,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:55:42,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:55:42,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 16:55:42,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:55:42,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:55:42,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:55:42,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:55:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:42,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:55:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:42,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:55:42,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626339003] [2023-12-21 16:55:42,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626339003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:55:42,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:55:42,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 16:55:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683254245] [2023-12-21 16:55:42,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:55:42,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 16:55:42,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:55:42,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 16:55:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 16:55:42,500 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:42,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:55:42,783 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2023-12-21 16:55:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 16:55:42,783 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-21 16:55:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:55:42,785 INFO L225 Difference]: With dead ends: 101 [2023-12-21 16:55:42,785 INFO L226 Difference]: Without dead ends: 84 [2023-12-21 16:55:42,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 16:55:42,787 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 177 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:55:42,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 118 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 16:55:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-21 16:55:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 44. [2023-12-21 16:55:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2023-12-21 16:55:42,794 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 10 [2023-12-21 16:55:42,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:55:42,796 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2023-12-21 16:55:42,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2023-12-21 16:55:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 16:55:42,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:55:42,796 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-12-21 16:55:42,812 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 [2023-12-21 16:55:42,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:42,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:55:42,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:55:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash -932198848, now seen corresponding path program 3 times [2023-12-21 16:55:43,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:55:43,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553138516] [2023-12-21 16:55:43,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:55:43,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:43,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:55:43,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:55:43,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 16:55:43,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 16:55:43,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:55:43,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:55:43,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:55:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:43,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:55:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:43,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:55:43,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553138516] [2023-12-21 16:55:43,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553138516] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:55:43,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:55:43,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 16:55:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147064636] [2023-12-21 16:55:43,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:55:43,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 16:55:43,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:55:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 16:55:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:55:43,489 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:55:44,709 INFO L93 Difference]: Finished difference Result 212 states and 248 transitions. [2023-12-21 16:55:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 16:55:44,711 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 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 16 [2023-12-21 16:55:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:55:44,712 INFO L225 Difference]: With dead ends: 212 [2023-12-21 16:55:44,712 INFO L226 Difference]: Without dead ends: 180 [2023-12-21 16:55:44,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 16:55:44,713 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 966 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 16:55:44,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 526 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 16:55:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-21 16:55:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 86. [2023-12-21 16:55:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 85 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2023-12-21 16:55:44,722 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 16 [2023-12-21 16:55:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:55:44,723 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2023-12-21 16:55:44,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2023-12-21 16:55:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 16:55:44,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:55:44,723 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-12-21 16:55:44,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 16:55:44,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:44,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:55:44,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:55:44,925 INFO L85 PathProgramCache]: Analyzing trace with hash -727495552, now seen corresponding path program 4 times [2023-12-21 16:55:44,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:55:44,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694695662] [2023-12-21 16:55:44,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 16:55:44,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:44,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:55:44,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:55:44,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 16:55:44,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 16:55:44,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:55:44,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:55:44,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:55:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:45,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:55:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:46,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:55:46,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694695662] [2023-12-21 16:55:46,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694695662] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:55:46,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:55:46,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 16:55:46,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226250084] [2023-12-21 16:55:46,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:55:46,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:55:46,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:55:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:55:46,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:55:46,488 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:55:53,690 INFO L93 Difference]: Finished difference Result 434 states and 506 transitions. [2023-12-21 16:55:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:55:53,691 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-21 16:55:53,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:55:53,693 INFO L225 Difference]: With dead ends: 434 [2023-12-21 16:55:53,693 INFO L226 Difference]: Without dead ends: 372 [2023-12-21 16:55:53,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 16:55:53,696 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 4056 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:55:53,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 2206 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 16:55:53,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-21 16:55:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 170. [2023-12-21 16:55:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.1538461538461537) internal successors, (195), 169 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 195 transitions. [2023-12-21 16:55:53,710 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 195 transitions. Word has length 28 [2023-12-21 16:55:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:55:53,710 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 195 transitions. [2023-12-21 16:55:53,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:55:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 195 transitions. [2023-12-21 16:55:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 16:55:53,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:55:53,712 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1] [2023-12-21 16:55:53,724 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 (6)] Forceful destruction successful, exit code 0 [2023-12-21 16:55:53,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:53,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:55:53,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:55:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash 437532928, now seen corresponding path program 5 times [2023-12-21 16:55:53,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:55:53,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514529479] [2023-12-21 16:55:53,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 16:55:53,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:53,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:55:53,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:55:53,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 16:55:54,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-21 16:55:54,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:55:54,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 16:55:54,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:55:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:55,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:56:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:56:01,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:56:01,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514529479] [2023-12-21 16:56:01,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514529479] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:56:01,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:56:01,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 16:56:01,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385720639] [2023-12-21 16:56:01,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:56:01,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 16:56:01,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:56:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 16:56:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 16:56:01,068 INFO L87 Difference]: Start difference. First operand 170 states and 195 transitions. Second operand has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:56:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:56:50,471 INFO L93 Difference]: Finished difference Result 878 states and 1022 transitions. [2023-12-21 16:56:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-21 16:56:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 16:56:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:56:50,474 INFO L225 Difference]: With dead ends: 878 [2023-12-21 16:56:50,474 INFO L226 Difference]: Without dead ends: 756 [2023-12-21 16:56:50,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=6910, Invalid=13396, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 16:56:50,478 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 14142 mSDsluCounter, 8832 mSDsCounter, 0 mSdLazyCounter, 9210 mSolverCounterSat, 3322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14142 SdHoareTripleChecker+Valid, 9022 SdHoareTripleChecker+Invalid, 12532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3322 IncrementalHoareTripleChecker+Valid, 9210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-21 16:56:50,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14142 Valid, 9022 Invalid, 12532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3322 Valid, 9210 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-21 16:56:50,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-21 16:56:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 338. [2023-12-21 16:56:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.1483679525222552) internal successors, (387), 337 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:56:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 387 transitions. [2023-12-21 16:56:50,498 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 387 transitions. Word has length 52 [2023-12-21 16:56:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:56:50,498 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 387 transitions. [2023-12-21 16:56:50,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:56:50,498 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 387 transitions. [2023-12-21 16:56:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 16:56:50,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:56:50,500 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1] [2023-12-21 16:56:50,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 16:56:50,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:56:50,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:56:50,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:56:50,701 INFO L85 PathProgramCache]: Analyzing trace with hash -220360192, now seen corresponding path program 6 times [2023-12-21 16:56:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:56:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615390396] [2023-12-21 16:56:50,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 16:56:50,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:56:50,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:56:50,703 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:56:50,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 16:56:52,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2023-12-21 16:56:52,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:56:52,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 16:56:52,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:56:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:56:55,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:57:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:57:15,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:57:15,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615390396] [2023-12-21 16:57:15,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615390396] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:57:15,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:57:15,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 16:57:15,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660674194] [2023-12-21 16:57:15,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:57:15,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 16:57:15,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:57:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 16:57:15,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 16:57:15,115 INFO L87 Difference]: Start difference. First operand 338 states and 387 transitions. Second operand has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:04:12,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:04:12,274 INFO L93 Difference]: Finished difference Result 1766 states and 2054 transitions. [2023-12-21 17:04:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-21 17:04:12,275 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-21 17:04:12,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:04:12,279 INFO L225 Difference]: With dead ends: 1766 [2023-12-21 17:04:12,279 INFO L226 Difference]: Without dead ends: 1524 [2023-12-21 17:04:12,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 411.2s TimeCoverageRelationStatistics Valid=27628, Invalid=54454, Unknown=0, NotChecked=0, Total=82082 [2023-12-21 17:04:12,284 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 55998 mSDsluCounter, 36096 mSDsCounter, 0 mSdLazyCounter, 36794 mSolverCounterSat, 13164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55998 SdHoareTripleChecker+Valid, 36478 SdHoareTripleChecker+Invalid, 49958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13164 IncrementalHoareTripleChecker+Valid, 36794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:04:12,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55998 Valid, 36478 Invalid, 49958 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13164 Valid, 36794 Invalid, 0 Unknown, 0 Unchecked, 24.4s Time] [2023-12-21 17:04:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2023-12-21 17:04:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 674. [2023-12-21 17:04:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.1456166419019316) internal successors, (771), 673 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:04:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 771 transitions. [2023-12-21 17:04:12,310 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 771 transitions. Word has length 100 [2023-12-21 17:04:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:04:12,311 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 771 transitions. [2023-12-21 17:04:12,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:04:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 771 transitions. [2023-12-21 17:04:12,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 17:04:12,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:04:12,316 INFO L195 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1, 1, 1] [2023-12-21 17:04:12,323 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 [2023-12-21 17:04:12,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:04:12,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:04:12,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:04:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash -368163840, now seen corresponding path program 7 times [2023-12-21 17:04:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:04:12,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788195293] [2023-12-21 17:04:12,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:04:12,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:04:12,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:04:12,527 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:04:12,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 17:04:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:04:12,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 17:04:12,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:04:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:04:25,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:05:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:05:41,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:05:41,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788195293] [2023-12-21 17:05:41,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788195293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:05:41,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:05:41,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 17:05:41,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759458262] [2023-12-21 17:05:41,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:05:41,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 17:05:41,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:05:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 17:05:41,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 17:05:41,067 INFO L87 Difference]: Start difference. First operand 674 states and 771 transitions. Second operand has 384 states, 384 states have (on average 1.0104166666666667) internal successors, (388), 383 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) [2023-12-21 17:06:21,609 WARN L293 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:06:46,489 WARN L293 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:07:11,291 WARN L293 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:07:36,755 WARN L293 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:08:07,592 WARN L293 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:08:37,632 WARN L293 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 559 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:09:05,891 WARN L293 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 556 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:09:34,989 WARN L293 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 553 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 17:10:05,964 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 17:10:05,964 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 17:10:06,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-21 17:10:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2023-12-21 17:10:06,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 303.1s TimeCoverageRelationStatistics Valid=40318, Invalid=112954, Unknown=0, NotChecked=0, Total=153272 [2023-12-21 17:10:06,986 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36681 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:10:06,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36681 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-12-21 17:10:06,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-21 17:10:06,989 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 17:10:06,989 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (674states) and FLOYD_HOARE automaton (currently 201 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-21 17:10:06,992 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1] [2023-12-21 17:10:06,994 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 17:10:06,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:10:06 BoogieIcfgContainer [2023-12-21 17:10:06,995 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 17:10:06,995 INFO L158 Benchmark]: Toolchain (without parser) took 866831.96ms. Allocated memory was 276.8MB in the beginning and 782.2MB in the end (delta: 505.4MB). Free memory was 220.2MB in the beginning and 151.6MB in the end (delta: 68.7MB). Peak memory consumption was 628.7MB. Max. memory is 8.0GB. [2023-12-21 17:10:06,995 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 17:10:06,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1010.43ms. Allocated memory was 276.8MB in the beginning and 444.6MB in the end (delta: 167.8MB). Free memory was 220.2MB in the beginning and 267.8MB in the end (delta: -47.6MB). Peak memory consumption was 231.4MB. Max. memory is 8.0GB. [2023-12-21 17:10:06,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.35ms. Allocated memory is still 444.6MB. Free memory was 267.3MB in the beginning and 265.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 17:10:06,996 INFO L158 Benchmark]: Boogie Preprocessor took 30.12ms. Allocated memory is still 444.6MB. Free memory was 265.5MB in the beginning and 263.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 17:10:06,996 INFO L158 Benchmark]: RCFGBuilder took 219.41ms. Allocated memory is still 444.6MB. Free memory was 263.6MB in the beginning and 250.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 17:10:06,997 INFO L158 Benchmark]: TraceAbstraction took 865541.30ms. Allocated memory was 444.6MB in the beginning and 782.2MB in the end (delta: 337.6MB). Free memory was 249.5MB in the beginning and 151.6MB in the end (delta: 97.9MB). Peak memory consumption was 489.5MB. Max. memory is 8.0GB. [2023-12-21 17:10:06,998 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1010.43ms. Allocated memory was 276.8MB in the beginning and 444.6MB in the end (delta: 167.8MB). Free memory was 220.2MB in the beginning and 267.8MB in the end (delta: -47.6MB). Peak memory consumption was 231.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.35ms. Allocated memory is still 444.6MB. Free memory was 267.3MB in the beginning and 265.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.12ms. Allocated memory is still 444.6MB. Free memory was 265.5MB in the beginning and 263.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 219.41ms. Allocated memory is still 444.6MB. Free memory was 263.6MB in the beginning and 250.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 865541.30ms. Allocated memory was 444.6MB in the beginning and 782.2MB in the end (delta: 337.6MB). Free memory was 249.5MB in the beginning and 151.6MB in the end (delta: 97.9MB). Peak memory consumption was 489.5MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (674states) and FLOYD_HOARE automaton (currently 201 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 865.5s, OverallIterations: 8, TraceHistogramMax: 190, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 741.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75396 SdHoareTripleChecker+Valid, 48.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75396 mSDsluCounter, 48384 SdHoareTripleChecker+Invalid, 41.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47632 mSDsCounter, 17654 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85743 IncrementalHoareTripleChecker+Invalid, 103397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17654 mSolverCounterUnsat, 752 mSDtfsCounter, 85743 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 997 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 936 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5864 ImplicationChecksByTransitivity, 771.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=674occurred in iteration=7, InterpolantAutomatonStates: 383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 1620 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 120.1s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 809 ConstructedInterpolants, 0 QuantifiedInterpolants, 3891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2035 ConjunctsInSsa, 385 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 0/48020 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown