/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/hardness-nfm22/hardness_operatoramount_amount25_file-92.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 09:05:59,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 09:05:59,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 09:05:59,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 09:05:59,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 09:05:59,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 09:05:59,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 09:05:59,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 09:05:59,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 09:05:59,547 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 09:05:59,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 09:05:59,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 09:05:59,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 09:05:59,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 09:05:59,548 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 09:05:59,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 09:05:59,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 09:05:59,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 09:05:59,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 09:05:59,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 09:05:59,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 09:05:59,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 09:05:59,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 09:05:59,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 09:05:59,550 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 09:05:59,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 09:05:59,550 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 09:05:59,550 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 09:05:59,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 09:05:59,551 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 09:05:59,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 09:05:59,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 09:05:59,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 09:05:59,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 09:05:59,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:05:59,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 09:05:59,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 09:05:59,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 09:05:59,552 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 09:05:59,552 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 09:05:59,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 09:05:59,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 09:05:59,553 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 09:05:59,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 09:05:59,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 09:05:59,554 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 09:05:59,554 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 09:05:59,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 09:05:59,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 09:05:59,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 09:05:59,773 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 09:05:59,773 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 09:05:59,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-92.i [2023-12-24 09:06:00,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 09:06:01,052 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 09:06:01,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-92.i [2023-12-24 09:06:01,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a1e107c/709e033b53ef41a0aec49474f6c56db3/FLAG6d1543b87 [2023-12-24 09:06:01,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a1e107c/709e033b53ef41a0aec49474f6c56db3 [2023-12-24 09:06:01,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 09:06:01,076 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 09:06:01,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 09:06:01,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 09:06:01,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 09:06:01,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6626d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01, skipping insertion in model container [2023-12-24 09:06:01,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,110 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 09:06:01,231 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-92.i[915,928] [2023-12-24 09:06:01,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:06:01,299 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 09:06:01,311 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-92.i[915,928] [2023-12-24 09:06:01,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:06:01,350 INFO L206 MainTranslator]: Completed translation [2023-12-24 09:06:01,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01 WrapperNode [2023-12-24 09:06:01,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 09:06:01,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 09:06:01,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 09:06:01,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 09:06:01,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,407 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-12-24 09:06:01,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 09:06:01,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 09:06:01,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 09:06:01,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 09:06:01,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,424 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,439 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 09:06:01,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 09:06:01,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 09:06:01,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 09:06:01,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 09:06:01,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (1/1) ... [2023-12-24 09:06:01,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:06:01,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 09:06:01,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 09:06:01,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 09:06:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 09:06:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 09:06:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 09:06:01,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 09:06:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 09:06:01,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 09:06:01,603 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 09:06:01,606 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 09:06:02,088 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 09:06:02,182 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 09:06:02,182 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 09:06:02,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:06:02 BoogieIcfgContainer [2023-12-24 09:06:02,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 09:06:02,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 09:06:02,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 09:06:02,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 09:06:02,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 09:06:01" (1/3) ... [2023-12-24 09:06:02,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9affa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:06:02, skipping insertion in model container [2023-12-24 09:06:02,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:06:01" (2/3) ... [2023-12-24 09:06:02,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9affa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:06:02, skipping insertion in model container [2023-12-24 09:06:02,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:06:02" (3/3) ... [2023-12-24 09:06:02,188 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-92.i [2023-12-24 09:06:02,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 09:06:02,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 09:06:02,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 09:06:02,315 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;@22f13247, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 09:06:02,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 09:06:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 09:06:02,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 09:06:02,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:06:02,333 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:06:02,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:06:02,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:06:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash 12788562, now seen corresponding path program 1 times [2023-12-24 09:06:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:06:02,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243671686] [2023-12-24 09:06:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:06:02,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:06:02,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:06:02,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:06:02,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 09:06:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:06:02,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 09:06:02,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:06:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-24 09:06:02,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:06:02,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:06:02,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243671686] [2023-12-24 09:06:02,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243671686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:06:02,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:06:02,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 09:06:02,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249276539] [2023-12-24 09:06:02,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:06:02,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 09:06:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:06:02,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 09:06:02,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:06:02,646 INFO L87 Difference]: Start difference. First operand has 46 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 09:06:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:06:02,799 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2023-12-24 09:06:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 09:06:02,811 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 104 [2023-12-24 09:06:02,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:06:02,817 INFO L225 Difference]: With dead ends: 89 [2023-12-24 09:06:02,817 INFO L226 Difference]: Without dead ends: 44 [2023-12-24 09:06:02,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:06:02,821 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 09:06:02,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 09:06:02,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-24 09:06:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-24 09:06:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 09:06:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 65 transitions. [2023-12-24 09:06:02,863 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 65 transitions. Word has length 104 [2023-12-24 09:06:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:06:02,863 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 65 transitions. [2023-12-24 09:06:02,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 09:06:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 65 transitions. [2023-12-24 09:06:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 09:06:02,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:06:02,867 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:06:02,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 09:06:03,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:06:03,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:06:03,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:06:03,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1236019116, now seen corresponding path program 1 times [2023-12-24 09:06:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:06:03,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954827205] [2023-12-24 09:06:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:06:03,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:06:03,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:06:03,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:06:03,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 09:06:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:06:03,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:06:03,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:06:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 232 proven. 12 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-24 09:06:03,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:06:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 09:06:03,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:06:03,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954827205] [2023-12-24 09:06:03,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954827205] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 09:06:03,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:06:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-24 09:06:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223221882] [2023-12-24 09:06:03,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:06:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 09:06:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:06:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 09:06:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-24 09:06:03,440 INFO L87 Difference]: Start difference. First operand 44 states and 65 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 09:06:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:06:04,033 INFO L93 Difference]: Finished difference Result 118 states and 173 transitions. [2023-12-24 09:06:04,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 09:06:04,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 104 [2023-12-24 09:06:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:06:04,037 INFO L225 Difference]: With dead ends: 118 [2023-12-24 09:06:04,037 INFO L226 Difference]: Without dead ends: 75 [2023-12-24 09:06:04,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:06:04,039 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 74 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:06:04,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 238 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 09:06:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-24 09:06:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2023-12-24 09:06:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-24 09:06:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 106 transitions. [2023-12-24 09:06:04,055 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 106 transitions. Word has length 104 [2023-12-24 09:06:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:06:04,055 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 106 transitions. [2023-12-24 09:06:04,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 09:06:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 106 transitions. [2023-12-24 09:06:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 09:06:04,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:06:04,078 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:06:04,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 09:06:04,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:06:04,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:06:04,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:06:04,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1178760814, now seen corresponding path program 1 times [2023-12-24 09:06:04,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:06:04,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014482587] [2023-12-24 09:06:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:06:04,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:06:04,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:06:04,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:06:04,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 09:06:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:06:04,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 09:06:04,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:06:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 302 proven. 27 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-24 09:06:15,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:07:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 09:07:03,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:07:03,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014482587] [2023-12-24 09:07:03,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014482587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:07:03,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:07:03,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2023-12-24 09:07:03,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426199012] [2023-12-24 09:07:03,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:07:03,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 09:07:03,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:07:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 09:07:03,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-12-24 09:07:03,454 INFO L87 Difference]: Start difference. First operand 72 states and 106 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 09:07:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:07:36,147 INFO L93 Difference]: Finished difference Result 115 states and 153 transitions. [2023-12-24 09:07:36,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 09:07:36,157 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 104 [2023-12-24 09:07:36,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:07:36,160 INFO L225 Difference]: With dead ends: 115 [2023-12-24 09:07:36,160 INFO L226 Difference]: Without dead ends: 113 [2023-12-24 09:07:36,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2023-12-24 09:07:36,161 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 185 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2023-12-24 09:07:36,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 180 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 24.8s Time] [2023-12-24 09:07:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-24 09:07:36,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2023-12-24 09:07:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 53 states have internal predecessors, (63), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 09:07:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 117 transitions. [2023-12-24 09:07:36,175 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 117 transitions. Word has length 104 [2023-12-24 09:07:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:07:36,176 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 117 transitions. [2023-12-24 09:07:36,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 09:07:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 117 transitions. [2023-12-24 09:07:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 09:07:36,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:07:36,177 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:07:36,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 09:07:36,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:07:36,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:07:36,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:07:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1988107440, now seen corresponding path program 1 times [2023-12-24 09:07:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:07:36,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201922873] [2023-12-24 09:07:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:07:36,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:07:36,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:07:36,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:07:36,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 09:07:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:07:36,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 09:07:36,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:07:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 09:07:55,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:08:33,020 WARN L293 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 79 DAG size of output: 87 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 09:09:07,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:09:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201922873] [2023-12-24 09:09:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201922873] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:09:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1443185627] [2023-12-24 09:09:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:09:07,715 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:09:07,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:09:07,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:09:07,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 09:09:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:09:08,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 09:09:08,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:10:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 286 proven. 198 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-24 09:10:25,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:12:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 09:12:17,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1443185627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:12:17,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-24 09:12:17,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 39, 9] total 63 [2023-12-24 09:12:17,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107770088] [2023-12-24 09:12:17,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-24 09:12:17,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-24 09:12:17,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:12:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-24 09:12:17,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=663, Invalid=3893, Unknown=0, NotChecked=0, Total=4556 [2023-12-24 09:12:17,677 INFO L87 Difference]: Start difference. First operand 84 states and 117 transitions. Second operand has 63 states, 63 states have (on average 1.873015873015873) internal successors, (118), 57 states have internal predecessors, (118), 18 states have call successors, (50), 17 states have call predecessors, (50), 22 states have return successors, (51), 18 states have call predecessors, (51), 18 states have call successors, (51) [2023-12-24 09:14:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:14:18,313 INFO L93 Difference]: Finished difference Result 186 states and 205 transitions. [2023-12-24 09:14:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-24 09:14:18,325 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.873015873015873) internal successors, (118), 57 states have internal predecessors, (118), 18 states have call successors, (50), 17 states have call predecessors, (50), 22 states have return successors, (51), 18 states have call predecessors, (51), 18 states have call successors, (51) Word has length 104 [2023-12-24 09:14:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:14:18,329 INFO L225 Difference]: With dead ends: 186 [2023-12-24 09:14:18,329 INFO L226 Difference]: Without dead ends: 184 [2023-12-24 09:14:18,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 247.2s TimeCoverageRelationStatistics Valid=2403, Invalid=11639, Unknown=0, NotChecked=0, Total=14042 [2023-12-24 09:14:18,333 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 271 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2023-12-24 09:14:18,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 497 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 31.3s Time] [2023-12-24 09:14:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-24 09:14:18,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 96. [2023-12-24 09:14:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 65 states have internal predecessors, (71), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 09:14:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2023-12-24 09:14:18,358 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 104 [2023-12-24 09:14:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:14:18,359 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2023-12-24 09:14:18,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.873015873015873) internal successors, (118), 57 states have internal predecessors, (118), 18 states have call successors, (50), 17 states have call predecessors, (50), 22 states have return successors, (51), 18 states have call predecessors, (51), 18 states have call successors, (51) [2023-12-24 09:14:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2023-12-24 09:14:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 09:14:18,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:14:18,360 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:14:18,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 09:14:18,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-24 09:14:18,770 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 09:14:18,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:14:18,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:14:18,771 INFO L85 PathProgramCache]: Analyzing trace with hash 323127254, now seen corresponding path program 1 times [2023-12-24 09:14:18,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:14:18,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552367001] [2023-12-24 09:14:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:14:18,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:14:18,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:14:18,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:14:18,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 09:14:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:14:18,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:14:18,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:14:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 232 proven. 12 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-24 09:14:18,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:14:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 09:14:19,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:14:19,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552367001] [2023-12-24 09:14:19,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552367001] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 09:14:19,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:14:19,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-24 09:14:19,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764605881] [2023-12-24 09:14:19,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:14:19,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 09:14:19,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:14:19,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 09:14:19,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-24 09:14:19,016 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 09:14:19,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:14:19,669 INFO L93 Difference]: Finished difference Result 260 states and 280 transitions. [2023-12-24 09:14:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 09:14:19,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 105 [2023-12-24 09:14:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:14:19,674 INFO L225 Difference]: With dead ends: 260 [2023-12-24 09:14:19,674 INFO L226 Difference]: Without dead ends: 165 [2023-12-24 09:14:19,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:14:19,676 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 70 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:14:19,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 238 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 09:14:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-24 09:14:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 97. [2023-12-24 09:14:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 09:14:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2023-12-24 09:14:19,685 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 105 [2023-12-24 09:14:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:14:19,686 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2023-12-24 09:14:19,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 09:14:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2023-12-24 09:14:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 09:14:19,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:14:19,687 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:14:19,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-24 09:14:19,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:14:19,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:14:19,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:14:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2098134616, now seen corresponding path program 1 times [2023-12-24 09:14:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:14:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348805784] [2023-12-24 09:14:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:14:19,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:14:19,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:14:19,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:14:19,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 09:14:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:14:19,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 09:14:19,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:14:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 302 proven. 27 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-24 09:14:33,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:15:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 09:15:28,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:15:28,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348805784] [2023-12-24 09:15:28,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348805784] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:15:28,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:15:28,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2023-12-24 09:15:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230788482] [2023-12-24 09:15:28,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:15:28,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 09:15:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:15:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 09:15:28,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-12-24 09:15:28,159 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 09:15:52,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:15:52,011 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2023-12-24 09:15:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 09:15:52,021 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 105 [2023-12-24 09:15:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:15:52,022 INFO L225 Difference]: With dead ends: 125 [2023-12-24 09:15:52,022 INFO L226 Difference]: Without dead ends: 123 [2023-12-24 09:15:52,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2023-12-24 09:15:52,023 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 113 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:15:52,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 171 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-12-24 09:15:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-24 09:15:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 102. [2023-12-24 09:15:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 71 states have internal predecessors, (80), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 09:15:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2023-12-24 09:15:52,033 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 105 [2023-12-24 09:15:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:15:52,033 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2023-12-24 09:15:52,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 09:15:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2023-12-24 09:15:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 09:15:52,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:15:52,034 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:15:52,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-24 09:15:52,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:15:52,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:15:52,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:15:52,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1516774310, now seen corresponding path program 1 times [2023-12-24 09:15:52,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:15:52,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479555417] [2023-12-24 09:15:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:15:52,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:15:52,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:15:52,242 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:15:52,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 09:15:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:15:52,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 09:15:52,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:16:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 09:16:12,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:16:49,520 WARN L293 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 79 DAG size of output: 87 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 09:17:38,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:17:38,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479555417] [2023-12-24 09:17:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479555417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:17:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1879291948] [2023-12-24 09:17:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:17:38,230 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:17:38,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:17:38,232 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:17:38,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 09:17:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:17:38,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 09:17:38,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:18:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 288 proven. 195 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-24 09:18:57,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-24 09:20:42,525 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:20:42,525 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:20:42,529 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:20:42,539 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 09:20:42,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 09:20:42,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-24 09:20:42,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 09:20:42,940 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 106 with TraceHistMax 17,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 63 known predicates. [2023-12-24 09:20:42,943 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:20:42,945 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 09:20:42,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 09:20:42 BoogieIcfgContainer [2023-12-24 09:20:42,946 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 09:20:42,947 INFO L158 Benchmark]: Toolchain (without parser) took 881870.45ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 179.8MB in the beginning and 80.8MB in the end (delta: 99.0MB). Peak memory consumption was 146.7MB. Max. memory is 8.0GB. [2023-12-24 09:20:42,947 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 186.6MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 09:20:42,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.29ms. Allocated memory is still 231.7MB. Free memory was 179.8MB in the beginning and 166.4MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-24 09:20:42,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.94ms. Allocated memory is still 231.7MB. Free memory was 166.4MB in the beginning and 164.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 09:20:42,947 INFO L158 Benchmark]: Boogie Preprocessor took 55.17ms. Allocated memory is still 231.7MB. Free memory was 164.3MB in the beginning and 161.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 09:20:42,947 INFO L158 Benchmark]: RCFGBuilder took 719.17ms. Allocated memory is still 231.7MB. Free memory was 161.7MB in the beginning and 195.6MB in the end (delta: -33.9MB). Peak memory consumption was 18.8MB. Max. memory is 8.0GB. [2023-12-24 09:20:42,948 INFO L158 Benchmark]: TraceAbstraction took 880762.33ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 194.6MB in the beginning and 80.8MB in the end (delta: 113.8MB). Peak memory consumption was 160.4MB. Max. memory is 8.0GB. [2023-12-24 09:20:42,956 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 186.6MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 274.29ms. Allocated memory is still 231.7MB. Free memory was 179.8MB in the beginning and 166.4MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.94ms. Allocated memory is still 231.7MB. Free memory was 166.4MB in the beginning and 164.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.17ms. Allocated memory is still 231.7MB. Free memory was 164.3MB in the beginning and 161.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 719.17ms. Allocated memory is still 231.7MB. Free memory was 161.7MB in the beginning and 195.6MB in the end (delta: -33.9MB). Peak memory consumption was 18.8MB. Max. memory is 8.0GB. * TraceAbstraction took 880762.33ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 194.6MB in the beginning and 80.8MB in the end (delta: 113.8MB). Peak memory consumption was 160.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 106 with TraceHistMax 17,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 63 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 880.7s, OverallIterations: 7, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 178.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 734 SdHoareTripleChecker+Valid, 73.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 713 mSDsluCounter, 1386 SdHoareTripleChecker+Invalid, 68.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1008 mSDsCounter, 191 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2218 IncrementalHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 191 mSolverCounterUnsat, 378 mSDtfsCounter, 2218 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1323 GetRequests, 1126 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4825 ImplicationChecksByTransitivity, 318.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=6, InterpolantAutomatonStates: 108, 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, 6 MinimizatonAttempts, 209 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 408.5s InterpolantComputationTime, 730 NumberOfCodeBlocks, 730 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1240 ConstructedInterpolants, 11 QuantifiedInterpolants, 16843 SizeOfPredicates, 115 NumberOfNonLiveVariables, 1217 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 6117/6528 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