/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_floatingpointinfluence_no-floats_file-36.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 19:54:17,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 19:54:17,754 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 19:54:17,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 19:54:17,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 19:54:17,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 19:54:17,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 19:54:17,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 19:54:17,789 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 19:54:17,789 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 19:54:17,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 19:54:17,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 19:54:17,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 19:54:17,800 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 19:54:17,800 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 19:54:17,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 19:54:17,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 19:54:17,801 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 19:54:17,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 19:54:17,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 19:54:17,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 19:54:17,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 19:54:17,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 19:54:17,802 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 19:54:17,803 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 19:54:17,803 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 19:54:17,803 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 19:54:17,803 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 19:54:17,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 19:54:17,804 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 19:54:17,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 19:54:17,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 19:54:17,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 19:54:17,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 19:54:17,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 19:54:17,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 19:54:17,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 19:54:17,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 19:54:17,805 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 19:54:17,806 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 19:54:17,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 19:54:17,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 19:54:17,806 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 19:54:17,806 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 19:54:17,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 19:54:17,807 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 19:54:17,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 19:54:17,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 19:54:18,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 19:54:18,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 19:54:18,023 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 19:54:18,023 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 19:54:18,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i [2023-12-23 19:54:19,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 19:54:19,262 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 19:54:19,262 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i [2023-12-23 19:54:19,269 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7feea1cd/e1663058d7f94cf7bbe6994501d49fe8/FLAGf975a3522 [2023-12-23 19:54:19,279 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7feea1cd/e1663058d7f94cf7bbe6994501d49fe8 [2023-12-23 19:54:19,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 19:54:19,282 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 19:54:19,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 19:54:19,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 19:54:19,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 19:54:19,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aaf1930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19, skipping insertion in model container [2023-12-23 19:54:19,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,306 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 19:54:19,407 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_floatingpointinfluence_no-floats_file-36.i[916,929] [2023-12-23 19:54:19,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 19:54:19,444 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 19:54:19,455 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_floatingpointinfluence_no-floats_file-36.i[916,929] [2023-12-23 19:54:19,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 19:54:19,482 INFO L206 MainTranslator]: Completed translation [2023-12-23 19:54:19,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19 WrapperNode [2023-12-23 19:54:19,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 19:54:19,483 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 19:54:19,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 19:54:19,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 19:54:19,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,523 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 106 [2023-12-23 19:54:19,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 19:54:19,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 19:54:19,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 19:54:19,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 19:54:19,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,544 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]. [2023-12-23 19:54:19,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 19:54:19,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 19:54:19,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 19:54:19,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 19:54:19,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (1/1) ... [2023-12-23 19:54:19,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 19:54:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 19:54:19,595 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) [2023-12-23 19:54:19,616 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 [2023-12-23 19:54:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 19:54:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 19:54:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 19:54:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 19:54:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 19:54:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 19:54:19,723 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 19:54:19,725 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 19:54:19,935 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 19:54:19,968 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 19:54:19,969 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 19:54:19,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:19 BoogieIcfgContainer [2023-12-23 19:54:19,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 19:54:19,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 19:54:19,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 19:54:19,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 19:54:19,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:54:19" (1/3) ... [2023-12-23 19:54:19,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d9e29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:19, skipping insertion in model container [2023-12-23 19:54:19,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:19" (2/3) ... [2023-12-23 19:54:19,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d9e29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:19, skipping insertion in model container [2023-12-23 19:54:19,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:19" (3/3) ... [2023-12-23 19:54:19,975 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-36.i [2023-12-23 19:54:19,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 19:54:19,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 19:54:20,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 19:54:20,040 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;@1f8efaa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 19:54:20,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 19:54:20,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-23 19:54:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-23 19:54:20,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 19:54:20,098 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 19:54:20,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 19:54:20,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 19:54:20,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1784490051, now seen corresponding path program 1 times [2023-12-23 19:54:20,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 19:54:20,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664143787] [2023-12-23 19:54:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:54:20,115 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 [2023-12-23 19:54:20,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 19:54:20,118 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) [2023-12-23 19:54:20,121 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 [2023-12-23 19:54:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 19:54:20,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 19:54:20,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 19:54:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-23 19:54:20,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 19:54:20,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 19:54:20,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664143787] [2023-12-23 19:54:20,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664143787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 19:54:20,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 19:54:20,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 19:54:20,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774978232] [2023-12-23 19:54:20,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 19:54:20,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 19:54:20,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 19:54:20,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 19:54:20,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 19:54:20,352 INFO L87 Difference]: Start difference. First operand has 45 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-23 19:54:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 19:54:20,392 INFO L93 Difference]: Finished difference Result 87 states and 154 transitions. [2023-12-23 19:54:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 19:54:20,394 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-12-23 19:54:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 19:54:20,400 INFO L225 Difference]: With dead ends: 87 [2023-12-23 19:54:20,400 INFO L226 Difference]: Without dead ends: 43 [2023-12-23 19:54:20,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 19:54:20,407 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-23 19:54:20,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 19:54:20,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-23 19:54:20,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-23 19:54:20,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-23 19:54:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 64 transitions. [2023-12-23 19:54:20,451 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 64 transitions. Word has length 98 [2023-12-23 19:54:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 19:54:20,452 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 64 transitions. [2023-12-23 19:54:20,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-23 19:54:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 64 transitions. [2023-12-23 19:54:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-23 19:54:20,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 19:54:20,457 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 19:54:20,475 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 [2023-12-23 19:54:20,662 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 [2023-12-23 19:54:20,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 19:54:20,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 19:54:20,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1414749695, now seen corresponding path program 1 times [2023-12-23 19:54:20,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 19:54:20,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125828887] [2023-12-23 19:54:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:54:20,665 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 [2023-12-23 19:54:20,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 19:54:20,667 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) [2023-12-23 19:54:20,669 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 [2023-12-23 19:54:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 19:54:20,741 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-23 19:54:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 19:54:20,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-23 19:54:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1901929415] [2023-12-23 19:54:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:54:20,809 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 19:54:20,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 19:54:20,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 19:54:20,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-23 19:54:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 19:54:21,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-23 19:54:21,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 19:56:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-23 19:56:40,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 19:56:40,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 19:56:40,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125828887] [2023-12-23 19:56:40,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-23 19:56:40,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1901929415] [2023-12-23 19:56:40,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1901929415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 19:56:40,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 19:56:40,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-23 19:56:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818354105] [2023-12-23 19:56:40,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 19:56:40,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 19:56:40,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 19:56:40,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 19:56:40,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 19:56:40,609 INFO L87 Difference]: Start difference. First operand 43 states and 64 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-23 19:56:40,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 19:56:40,853 INFO L93 Difference]: Finished difference Result 122 states and 180 transitions. [2023-12-23 19:56:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-23 19:56:40,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-12-23 19:56:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 19:56:40,855 INFO L225 Difference]: With dead ends: 122 [2023-12-23 19:56:40,855 INFO L226 Difference]: Without dead ends: 80 [2023-12-23 19:56:40,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-23 19:56:40,857 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 68 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 19:56:40,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 202 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 19:56:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-23 19:56:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2023-12-23 19:56:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 47 states have internal predecessors, (59), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-23 19:56:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2023-12-23 19:56:40,867 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 111 transitions. Word has length 98 [2023-12-23 19:56:40,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 19:56:40,867 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 111 transitions. [2023-12-23 19:56:40,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-23 19:56:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 111 transitions. [2023-12-23 19:56:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-23 19:56:40,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 19:56:40,869 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 19:56:40,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-23 19:56:41,082 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 [2023-12-23 19:56:41,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 19:56:41,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 19:56:41,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 19:56:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1357491393, now seen corresponding path program 1 times [2023-12-23 19:56:41,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 19:56:41,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097533915] [2023-12-23 19:56:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:56:41,287 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 [2023-12-23 19:56:41,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 19:56:41,290 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) [2023-12-23 19:56:41,296 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 [2023-12-23 19:56:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 19:56:41,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-23 19:56:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 19:56:41,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-23 19:56:41,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [547913029] [2023-12-23 19:56:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:56:41,469 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 19:56:41,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 19:56:41,470 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) [2023-12-23 19:56:41,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 19:56:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 19:56:41,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-23 19:56:41,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 19:59:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-23 19:59:04,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 19:59:04,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 19:59:04,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097533915] [2023-12-23 19:59:04,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-23 19:59:04,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [547913029] [2023-12-23 19:59:04,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [547913029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 19:59:04,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 19:59:04,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-23 19:59:04,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746724970] [2023-12-23 19:59:04,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 19:59:04,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 19:59:04,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 19:59:04,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 19:59:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-23 19:59:04,196 INFO L87 Difference]: Start difference. First operand 75 states and 111 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-23 19:59:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 19:59:04,626 INFO L93 Difference]: Finished difference Result 150 states and 220 transitions. [2023-12-23 19:59:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 19:59:04,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-12-23 19:59:04,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 19:59:04,632 INFO L225 Difference]: With dead ends: 150 [2023-12-23 19:59:04,632 INFO L226 Difference]: Without dead ends: 76 [2023-12-23 19:59:04,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-23 19:59:04,633 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 59 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 19:59:04,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 195 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 19:59:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-23 19:59:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2023-12-23 19:59:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-23 19:59:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 101 transitions. [2023-12-23 19:59:04,642 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 101 transitions. Word has length 98 [2023-12-23 19:59:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 19:59:04,642 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 101 transitions. [2023-12-23 19:59:04,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-23 19:59:04,642 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 101 transitions. [2023-12-23 19:59:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-23 19:59:04,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 19:59:04,643 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 19:59:04,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-23 19:59:04,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 19:59:05,058 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 [2023-12-23 19:59:05,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 19:59:05,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 19:59:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1494872853, now seen corresponding path program 1 times [2023-12-23 19:59:05,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 19:59:05,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205189185] [2023-12-23 19:59:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:59:05,060 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 [2023-12-23 19:59:05,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 19:59:05,064 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) [2023-12-23 19:59:05,065 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 [2023-12-23 19:59:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 19:59:05,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-23 19:59:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 19:59:05,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-23 19:59:05,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [130725032] [2023-12-23 19:59:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:59:05,169 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 19:59:05,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 19:59:05,175 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 19:59:05,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 19:59:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 19:59:05,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-23 19:59:05,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:07:05,271 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 1103 DAG size of output: 391 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 20:08:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-23 20:08:39,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:08:39,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:08:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205189185] [2023-12-23 20:08:39,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-23 20:08:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [130725032] [2023-12-23 20:08:39,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [130725032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:08:39,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:08:39,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-23 20:08:39,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086584220] [2023-12-23 20:08:39,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:08:39,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 20:08:39,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:08:39,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 20:08:39,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-23 20:08:39,838 INFO L87 Difference]: Start difference. First operand 71 states and 101 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-23 20:08:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:08:40,113 INFO L93 Difference]: Finished difference Result 168 states and 240 transitions. [2023-12-23 20:08:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 20:08:40,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-23 20:08:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:08:40,119 INFO L225 Difference]: With dead ends: 168 [2023-12-23 20:08:40,119 INFO L226 Difference]: Without dead ends: 98 [2023-12-23 20:08:40,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-23 20:08:40,125 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 83 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 20:08:40,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 211 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 20:08:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-23 20:08:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 70. [2023-12-23 20:08:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.170731707317073) internal successors, (48), 42 states have internal predecessors, (48), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-23 20:08:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 100 transitions. [2023-12-23 20:08:40,141 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 100 transitions. Word has length 99 [2023-12-23 20:08:40,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:08:40,141 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 100 transitions. [2023-12-23 20:08:40,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-23 20:08:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 100 transitions. [2023-12-23 20:08:40,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-23 20:08:40,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:08:40,143 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 20:08:40,155 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 [2023-12-23 20:08:40,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-23 20:08:40,560 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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 20:08:40,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:08:40,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:08:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1437614551, now seen corresponding path program 1 times [2023-12-23 20:08:40,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:08:40,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661392019] [2023-12-23 20:08:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:08:40,563 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 [2023-12-23 20:08:40,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:08:40,564 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) [2023-12-23 20:08:40,577 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 [2023-12-23 20:08:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:08:40,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-23 20:08:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-23 20:08:40,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-23 20:08:40,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1334845977] [2023-12-23 20:08:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:08:40,660 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 20:08:40,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 20:08:40,661 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) [2023-12-23 20:08:40,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-23 20:08:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:08:40,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-23 20:08:40,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 20:08:53,549 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 [2023-12-23 20:08:53,549 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 [2023-12-23 20:08:53,549 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 [2023-12-23 20:08:53,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 20:08:53,578 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 [2023-12-23 20:08:53,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-23 20:08:53,963 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 [2023-12-23 20:08:53,964 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 100 with TraceHistMax 16,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-10-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-3-2-2-2-3-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-23 20:08:53,968 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-23 20:08:53,970 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 20:08:53,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:08:53 BoogieIcfgContainer [2023-12-23 20:08:53,974 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 20:08:53,975 INFO L158 Benchmark]: Toolchain (without parser) took 874692.47ms. Allocated memory was 185.6MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 136.6MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-23 20:08:53,977 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 20:08:53,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.72ms. Allocated memory is still 185.6MB. Free memory was 136.6MB in the beginning and 123.3MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-23 20:08:53,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.23ms. Allocated memory is still 185.6MB. Free memory was 123.3MB in the beginning and 121.5MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-23 20:08:53,977 INFO L158 Benchmark]: Boogie Preprocessor took 30.96ms. Allocated memory is still 185.6MB. Free memory was 121.5MB in the beginning and 118.8MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 20:08:53,977 INFO L158 Benchmark]: RCFGBuilder took 413.26ms. Allocated memory is still 185.6MB. Free memory was 118.8MB in the beginning and 99.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-23 20:08:53,978 INFO L158 Benchmark]: TraceAbstraction took 874003.38ms. Allocated memory was 185.6MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 98.6MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2023-12-23 20:08:53,980 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.72ms. Allocated memory is still 185.6MB. Free memory was 136.6MB in the beginning and 123.3MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.23ms. Allocated memory is still 185.6MB. Free memory was 123.3MB in the beginning and 121.5MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.96ms. Allocated memory is still 185.6MB. Free memory was 121.5MB in the beginning and 118.8MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 413.26ms. Allocated memory is still 185.6MB. Free memory was 118.8MB in the beginning and 99.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 874003.38ms. Allocated memory was 185.6MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 98.6MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 3.6GB. 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 100 with TraceHistMax 16,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-10-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-3-2-2-2-3-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 873.9s, OverallIterations: 5, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 669 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 356 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 435 IncrementalHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 313 mSDtfsCounter, 435 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=2, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 38 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 856.7s InterpolantComputationTime, 688 NumberOfCodeBlocks, 688 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 1287 SizeOfPredicates, 52 NumberOfNonLiveVariables, 649 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 1920/1920 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