/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_amount500_file-36.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 09:31:29,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 09:31:29,769 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 09:31:29,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 09:31:29,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 09:31:29,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 09:31:29,794 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 09:31:29,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 09:31:29,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 09:31:29,795 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 09:31:29,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 09:31:29,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 09:31:29,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 09:31:29,796 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 09:31:29,797 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 09:31:29,797 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 09:31:29,797 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 09:31:29,798 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 09:31:29,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 09:31:29,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 09:31:29,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 09:31:29,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 09:31:29,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 09:31:29,804 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 09:31:29,805 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 09:31:29,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 09:31:29,805 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 09:31:29,805 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 09:31:29,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 09:31:29,806 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 09:31:29,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 09:31:29,807 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 09:31:29,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 09:31:29,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 09:31:29,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:31:29,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 09:31:29,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 09:31:29,813 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 09:31:29,813 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 09:31:29,813 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 09:31:29,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 09:31:29,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 09:31:29,820 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 09:31:29,821 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 09:31:29,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 09:31:29,821 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 09:31:29,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 09:31:30,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 09:31:30,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 09:31:30,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 09:31:30,114 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 09:31:30,114 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 09:31:30,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-36.i [2023-12-24 09:31:31,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 09:31:31,791 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 09:31:31,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-36.i [2023-12-24 09:31:31,820 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6acea28df/056f757cd5824e51ac8fefe9f73a81be/FLAG30b41fa54 [2023-12-24 09:31:31,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6acea28df/056f757cd5824e51ac8fefe9f73a81be [2023-12-24 09:31:31,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 09:31:31,836 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 09:31:31,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 09:31:31,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 09:31:31,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 09:31:31,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:31:31" (1/1) ... [2023-12-24 09:31:31,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf53037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:31, skipping insertion in model container [2023-12-24 09:31:31,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:31:31" (1/1) ... [2023-12-24 09:31:31,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 09:31:32,061 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_amount500_file-36.i[916,929] [2023-12-24 09:31:32,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:31:32,306 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 09:31:32,315 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_amount500_file-36.i[916,929] [2023-12-24 09:31:32,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:31:32,547 INFO L206 MainTranslator]: Completed translation [2023-12-24 09:31:32,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32 WrapperNode [2023-12-24 09:31:32,547 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 09:31:32,548 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 09:31:32,548 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 09:31:32,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 09:31:32,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,622 INFO L138 Inliner]: procedures = 27, calls = 91, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 617 [2023-12-24 09:31:32,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 09:31:32,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 09:31:32,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 09:31:32,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 09:31:32,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,685 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 09:31:32,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,757 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 09:31:32,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 09:31:32,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 09:31:32,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 09:31:32,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (1/1) ... [2023-12-24 09:31:32,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:31:32,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 09:31:32,808 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 09:31:32,823 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 09:31:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 09:31:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 09:31:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 09:31:32,844 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 09:31:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 09:31:32,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 09:31:33,002 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 09:31:33,003 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 09:32:48,873 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 09:32:48,942 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 09:32:48,943 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 09:32:48,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:32:48 BoogieIcfgContainer [2023-12-24 09:32:48,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 09:32:48,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 09:32:48,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 09:32:48,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 09:32:48,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 09:31:31" (1/3) ... [2023-12-24 09:32:48,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e984bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:32:48, skipping insertion in model container [2023-12-24 09:32:48,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:31:32" (2/3) ... [2023-12-24 09:32:48,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e984bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:32:48, skipping insertion in model container [2023-12-24 09:32:48,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:32:48" (3/3) ... [2023-12-24 09:32:48,951 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-36.i [2023-12-24 09:32:48,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 09:32:48,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 09:32:49,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 09:32:49,049 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;@48656cd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 09:32:49,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 09:32:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 160 states have (on average 1.5375) internal successors, (246), 161 states have internal predecessors, (246), 78 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 09:32:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-24 09:32:49,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:32:49,094 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:32:49,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:32:49,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:32:49,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1381601474, now seen corresponding path program 1 times [2023-12-24 09:32:49,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:32:49,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156016893] [2023-12-24 09:32:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:32:49,117 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 09:32:49,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:32:49,124 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 09:32:49,162 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 09:32:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:32:53,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 09:32:53,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:32:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 458 proven. 0 refuted. 0 times theorem prover too weak. 11554 trivial. 0 not checked. [2023-12-24 09:32:53,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:32:53,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:32:53,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156016893] [2023-12-24 09:32:53,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156016893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:32:53,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:32:53,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 09:32:53,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660437834] [2023-12-24 09:32:53,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:32:53,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 09:32:53,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:32:53,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 09:32:53,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:32:53,306 INFO L87 Difference]: Start difference. First operand has 241 states, 160 states have (on average 1.5375) internal successors, (246), 161 states have internal predecessors, (246), 78 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2023-12-24 09:32:59,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:32:59,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:32:59,971 INFO L93 Difference]: Finished difference Result 479 states and 880 transitions. [2023-12-24 09:33:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 09:33:00,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 515 [2023-12-24 09:33:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:33:00,855 INFO L225 Difference]: With dead ends: 479 [2023-12-24 09:33:00,856 INFO L226 Difference]: Without dead ends: 239 [2023-12-24 09:33:00,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 514 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 09:33:00,866 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:33:00,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 394 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-12-24 09:33:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-24 09:33:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-12-24 09:33:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 159 states have (on average 1.5157232704402517) internal successors, (241), 159 states have internal predecessors, (241), 78 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 09:33:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 397 transitions. [2023-12-24 09:33:00,936 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 397 transitions. Word has length 515 [2023-12-24 09:33:00,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:33:00,937 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 397 transitions. [2023-12-24 09:33:00,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2023-12-24 09:33:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 397 transitions. [2023-12-24 09:33:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-24 09:33:00,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:33:00,954 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:01,072 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 09:33:01,168 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 09:33:01,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:33:01,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:33:01,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1096000114, now seen corresponding path program 1 times [2023-12-24 09:33:01,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:33:01,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825403826] [2023-12-24 09:33:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:33:01,173 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 09:33:01,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:33:01,178 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 09:33:01,200 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 09:33:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:33:05,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:33:05,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:33:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 5873 proven. 93 refuted. 0 times theorem prover too weak. 6046 trivial. 0 not checked. [2023-12-24 09:33:47,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:33:52,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:33:52,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825403826] [2023-12-24 09:33:52,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825403826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:33:52,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1013247446] [2023-12-24 09:33:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:33:52,559 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:33:52,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:33:52,601 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) [2023-12-24 09:33:52,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-24 09:33:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:33:54,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:33:54,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:33:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2023-12-24 09:33:55,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:33:55,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1013247446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:33:55,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:33:55,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:33:55,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647970058] [2023-12-24 09:33:55,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:33:55,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:33:55,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:33:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:33:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:33:55,468 INFO L87 Difference]: Start difference. First operand 239 states and 397 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:34:04,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:08,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:12,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:13,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:34:13,933 INFO L93 Difference]: Finished difference Result 711 states and 1181 transitions. [2023-12-24 09:34:13,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:34:13,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) Word has length 515 [2023-12-24 09:34:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:34:13,941 INFO L225 Difference]: With dead ends: 711 [2023-12-24 09:34:13,941 INFO L226 Difference]: Without dead ends: 473 [2023-12-24 09:34:13,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1281 GetRequests, 1271 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:34:13,945 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 379 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-24 09:34:13,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 774 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 38 Invalid, 3 Unknown, 0 Unchecked, 18.4s Time] [2023-12-24 09:34:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-24 09:34:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2023-12-24 09:34:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 312 states have (on average 1.4871794871794872) internal successors, (464), 312 states have internal predecessors, (464), 156 states have call successors, (156), 2 states have call predecessors, (156), 2 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-24 09:34:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 776 transitions. [2023-12-24 09:34:14,038 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 776 transitions. Word has length 515 [2023-12-24 09:34:14,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:34:14,039 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 776 transitions. [2023-12-24 09:34:14,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:34:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 776 transitions. [2023-12-24 09:34:14,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-24 09:34:14,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:34:14,049 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:14,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-24 09:34:14,368 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 09:34:14,472 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 [2023-12-24 09:34:14,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:34:14,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:34:14,474 INFO L85 PathProgramCache]: Analyzing trace with hash 81475990, now seen corresponding path program 1 times [2023-12-24 09:34:14,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:34:14,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090366988] [2023-12-24 09:34:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:34:14,476 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 09:34:14,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:34:14,478 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 09:34:14,479 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 09:34:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:34:18,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:34:18,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:35:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 5873 proven. 93 refuted. 0 times theorem prover too weak. 6046 trivial. 0 not checked. [2023-12-24 09:35:10,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:35:16,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:35:16,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090366988] [2023-12-24 09:35:16,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090366988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:35:16,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [44770827] [2023-12-24 09:35:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:35:16,976 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:35:16,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:35:16,978 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 09:35:16,980 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 09:35:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:35:19,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:35:19,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:35:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2023-12-24 09:35:24,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:35:24,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [44770827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:35:24,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:35:24,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:35:24,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345184005] [2023-12-24 09:35:24,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:35:24,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:35:24,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:35:24,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:35:24,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:35:24,165 INFO L87 Difference]: Start difference. First operand 471 states and 776 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:35:32,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:36,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:40,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:44,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.66s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:35:44,942 INFO L93 Difference]: Finished difference Result 953 states and 1570 transitions. [2023-12-24 09:35:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:35:44,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) Word has length 516 [2023-12-24 09:35:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:35:44,948 INFO L225 Difference]: With dead ends: 953 [2023-12-24 09:35:44,948 INFO L226 Difference]: Without dead ends: 483 [2023-12-24 09:35:44,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1274 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:35:44,951 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 326 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2023-12-24 09:35:44,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1075 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 3 Unknown, 0 Unchecked, 20.7s Time] [2023-12-24 09:35:44,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-24 09:35:44,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2023-12-24 09:35:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 322 states have (on average 1.4627329192546583) internal successors, (471), 322 states have internal predecessors, (471), 156 states have call successors, (156), 2 states have call predecessors, (156), 2 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-24 09:35:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 783 transitions. [2023-12-24 09:35:44,991 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 783 transitions. Word has length 516 [2023-12-24 09:35:44,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:35:44,992 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 783 transitions. [2023-12-24 09:35:44,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:35:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 783 transitions. [2023-12-24 09:35:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-24 09:35:44,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:35:44,997 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:45,091 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 09:35:45,216 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 09:35:45,404 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 09:35:45,405 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:35:45,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:35:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash -411150184, now seen corresponding path program 1 times [2023-12-24 09:35:45,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:35:45,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792914500] [2023-12-24 09:35:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:35:45,407 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 09:35:45,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:35:45,409 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 09:35:45,450 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 09:35:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:35:49,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:35:49,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:36:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 5873 proven. 93 refuted. 0 times theorem prover too weak. 6046 trivial. 0 not checked. [2023-12-24 09:36:39,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:36:46,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:36:46,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792914500] [2023-12-24 09:36:46,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792914500] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:36:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1494482134] [2023-12-24 09:36:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:36:46,261 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:36:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:36:46,266 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) [2023-12-24 09:36:46,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-24 09:36:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:36:48,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:36:48,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:36:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2023-12-24 09:36:53,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:36:53,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1494482134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:36:53,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:36:53,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:36:53,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173440269] [2023-12-24 09:36:53,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:36:53,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:36:53,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:36:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:36:53,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:36:53,623 INFO L87 Difference]: Start difference. First operand 481 states and 783 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:37:02,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:06,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:10,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:11,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:37:11,435 INFO L93 Difference]: Finished difference Result 1396 states and 2267 transitions. [2023-12-24 09:37:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:37:11,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) Word has length 516 [2023-12-24 09:37:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:37:11,444 INFO L225 Difference]: With dead ends: 1396 [2023-12-24 09:37:11,445 INFO L226 Difference]: Without dead ends: 916 [2023-12-24 09:37:11,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1274 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:37:11,450 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 308 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-12-24 09:37:11,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 822 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 17.8s Time] [2023-12-24 09:37:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-12-24 09:37:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 912. [2023-12-24 09:37:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 615 states have (on average 1.4536585365853658) internal successors, (894), 617 states have internal predecessors, (894), 292 states have call successors, (292), 4 states have call predecessors, (292), 4 states have return successors, (292), 290 states have call predecessors, (292), 292 states have call successors, (292) [2023-12-24 09:37:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1478 transitions. [2023-12-24 09:37:11,547 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1478 transitions. Word has length 516 [2023-12-24 09:37:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:37:11,548 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1478 transitions. [2023-12-24 09:37:11,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:37:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1478 transitions. [2023-12-24 09:37:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-24 09:37:11,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:37:11,554 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:11,659 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 09:37:11,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-24 09:37:11,973 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 [2023-12-24 09:37:11,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:37:11,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:37:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1599083238, now seen corresponding path program 1 times [2023-12-24 09:37:11,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:37:11,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764933044] [2023-12-24 09:37:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:37:11,975 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 09:37:11,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:37:11,976 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 09:37:11,977 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 09:37:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:37:16,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 09:37:16,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:37:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 2423 proven. 24 refuted. 0 times theorem prover too weak. 9565 trivial. 0 not checked. [2023-12-24 09:37:25,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:37:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 207 proven. 24 refuted. 0 times theorem prover too weak. 11781 trivial. 0 not checked. [2023-12-24 09:37:33,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:37:33,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764933044] [2023-12-24 09:37:33,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764933044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:37:33,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:37:33,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-24 09:37:33,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967154595] [2023-12-24 09:37:33,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:37:33,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 09:37:33,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:37:33,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 09:37:33,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 09:37:33,171 INFO L87 Difference]: Start difference. First operand 912 states and 1478 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-24 09:37:36,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:01,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:05,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:09,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:38:09,411 INFO L93 Difference]: Finished difference Result 1417 states and 2274 transitions. [2023-12-24 09:38:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 09:38:10,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 516 [2023-12-24 09:38:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:38:10,411 INFO L225 Difference]: With dead ends: 1417 [2023-12-24 09:38:10,411 INFO L226 Difference]: Without dead ends: 506 [2023-12-24 09:38:10,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1024 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-24 09:38:10,414 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 424 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 150 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2023-12-24 09:38:10,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 752 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 416 Invalid, 3 Unknown, 0 Unchecked, 34.9s Time] [2023-12-24 09:38:10,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-12-24 09:38:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 494. [2023-12-24 09:38:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 331 states have (on average 1.4199395770392749) internal successors, (470), 331 states have internal predecessors, (470), 156 states have call successors, (156), 6 states have call predecessors, (156), 6 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-24 09:38:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 782 transitions. [2023-12-24 09:38:10,459 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 782 transitions. Word has length 516 [2023-12-24 09:38:10,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:38:10,461 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 782 transitions. [2023-12-24 09:38:10,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-24 09:38:10,462 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 782 transitions. [2023-12-24 09:38:10,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-12-24 09:38:10,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:38:10,466 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:38:10,562 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 [2023-12-24 09:38:10,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:38:10,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:38:10,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:38:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash 261290584, now seen corresponding path program 1 times [2023-12-24 09:38:10,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:38:10,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894751593] [2023-12-24 09:38:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:38:10,674 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 09:38:10,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:38:10,675 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:38:10,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 09:38:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:38:14,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:38:14,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:39:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 5873 proven. 93 refuted. 0 times theorem prover too weak. 6046 trivial. 0 not checked. [2023-12-24 09:39:04,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:39:11,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:39:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894751593] [2023-12-24 09:39:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894751593] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:39:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1267970033] [2023-12-24 09:39:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:39:11,440 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:39:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:39:11,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:39:11,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-24 09:39:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:39:13,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:39:13,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:39:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2023-12-24 09:39:19,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:39:19,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1267970033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:39:19,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:39:19,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:39:19,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460631304] [2023-12-24 09:39:19,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:39:19,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:39:19,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:39:19,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:39:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:39:19,756 INFO L87 Difference]: Start difference. First operand 494 states and 782 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:39:29,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:39:33,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:39:35,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:39:42,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:39:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:39:43,367 INFO L93 Difference]: Finished difference Result 1465 states and 2316 transitions. [2023-12-24 09:39:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:39:43,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) Word has length 517 [2023-12-24 09:39:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:39:43,375 INFO L225 Difference]: With dead ends: 1465 [2023-12-24 09:39:43,375 INFO L226 Difference]: Without dead ends: 972 [2023-12-24 09:39:43,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:39:43,378 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 313 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:39:43,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 773 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 3 Unknown, 0 Unchecked, 23.6s Time] [2023-12-24 09:39:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2023-12-24 09:39:43,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 663. [2023-12-24 09:39:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 500 states have (on average 1.446) internal successors, (723), 500 states have internal predecessors, (723), 156 states have call successors, (156), 6 states have call predecessors, (156), 6 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-24 09:39:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1035 transitions. [2023-12-24 09:39:43,453 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1035 transitions. Word has length 517 [2023-12-24 09:39:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:39:43,453 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 1035 transitions. [2023-12-24 09:39:43,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:39:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1035 transitions. [2023-12-24 09:39:43,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-12-24 09:39:43,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:39:43,473 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:43,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-24 09:39:43,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 09:39:43,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:39:43,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:39:43,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:39:43,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2112385900, now seen corresponding path program 1 times [2023-12-24 09:39:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:39:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241391812] [2023-12-24 09:39:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:39:43,887 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 09:39:43,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:39:43,888 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:39:43,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 09:39:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:39:47,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:39:47,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:40:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 5873 proven. 93 refuted. 0 times theorem prover too weak. 6046 trivial. 0 not checked. [2023-12-24 09:40:39,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:40:46,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:40:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241391812] [2023-12-24 09:40:46,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241391812] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:40:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [803638983] [2023-12-24 09:40:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:40:46,304 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:40:46,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:40:46,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:40:46,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-24 09:40:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:40:48,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 09:40:48,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:40:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2023-12-24 09:40:59,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:40:59,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [803638983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:40:59,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:40:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-24 09:40:59,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790611046] [2023-12-24 09:40:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:40:59,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:40:59,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:40:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:40:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:40:59,137 INFO L87 Difference]: Start difference. First operand 663 states and 1035 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:41:01,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:13,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:17,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:21,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:25,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:29,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:33,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:34,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:36,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:41:44,613 INFO L93 Difference]: Finished difference Result 1661 states and 2590 transitions. [2023-12-24 09:41:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 09:41:44,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) Word has length 517 [2023-12-24 09:41:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:41:44,627 INFO L225 Difference]: With dead ends: 1661 [2023-12-24 09:41:44,627 INFO L226 Difference]: Without dead ends: 991 [2023-12-24 09:41:44,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 1276 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:41:44,630 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 710 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.3s IncrementalHoareTripleChecker+Time [2023-12-24 09:41:44,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1426 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 242 Invalid, 6 Unknown, 0 Unchecked, 45.3s Time] [2023-12-24 09:41:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-12-24 09:41:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 986. [2023-12-24 09:41:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 744 states have (on average 1.4475806451612903) internal successors, (1077), 745 states have internal predecessors, (1077), 232 states have call successors, (232), 9 states have call predecessors, (232), 9 states have return successors, (232), 231 states have call predecessors, (232), 232 states have call successors, (232) [2023-12-24 09:41:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1541 transitions. [2023-12-24 09:41:44,705 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1541 transitions. Word has length 517 [2023-12-24 09:41:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:41:44,706 INFO L495 AbstractCegarLoop]: Abstraction has 986 states and 1541 transitions. [2023-12-24 09:41:44,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:41:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1541 transitions. [2023-12-24 09:41:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-12-24 09:41:44,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:41:44,711 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:44,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-24 09:41:45,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 09:41:45,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:41:45,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:41:45,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:41:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1536856788, now seen corresponding path program 1 times [2023-12-24 09:41:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:41:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893809332] [2023-12-24 09:41:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:41:45,133 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 09:41:45,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:41:45,134 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:41:45,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 09:41:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:41:48,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:41:48,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:42:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 5873 proven. 93 refuted. 0 times theorem prover too weak. 6046 trivial. 0 not checked. [2023-12-24 09:42:41,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:42:49,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:42:49,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893809332] [2023-12-24 09:42:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893809332] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:42:49,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1042717094] [2023-12-24 09:42:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:42:49,081 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:42:49,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:42:49,085 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:42:49,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-24 09:42:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:42:51,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 09:42:51,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:43:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2023-12-24 09:43:07,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:43:07,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1042717094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:43:07,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:43:07,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-24 09:43:07,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837051066] [2023-12-24 09:43:07,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:43:07,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:43:07,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:43:07,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:43:07,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:43:07,244 INFO L87 Difference]: Start difference. First operand 986 states and 1541 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:43:09,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:13,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:18,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:25,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:29,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:33,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:35,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:41,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:42,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:43:43,349 INFO L93 Difference]: Finished difference Result 2480 states and 3870 transitions. [2023-12-24 09:43:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 09:43:43,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) Word has length 517 [2023-12-24 09:43:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:43:43,358 INFO L225 Difference]: With dead ends: 2480 [2023-12-24 09:43:43,359 INFO L226 Difference]: Without dead ends: 1495 [2023-12-24 09:43:43,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 1276 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:43:43,362 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 523 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 185 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:43:43,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 784 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 53 Invalid, 5 Unknown, 0 Unchecked, 36.0s Time] [2023-12-24 09:43:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2023-12-24 09:43:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1027. [2023-12-24 09:43:43,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 785 states have (on average 1.462420382165605) internal successors, (1148), 786 states have internal predecessors, (1148), 232 states have call successors, (232), 9 states have call predecessors, (232), 9 states have return successors, (232), 231 states have call predecessors, (232), 232 states have call successors, (232) [2023-12-24 09:43:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1612 transitions. [2023-12-24 09:43:43,450 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1612 transitions. Word has length 517 [2023-12-24 09:43:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:43:43,450 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1612 transitions. [2023-12-24 09:43:43,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (78), 1 states have call predecessors, (78), 1 states have return successors, (78), 1 states have call predecessors, (78), 1 states have call successors, (78) [2023-12-24 09:43:43,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1612 transitions. [2023-12-24 09:43:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-12-24 09:43:43,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:43:43,456 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:43,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-24 09:43:43,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 09:43:43,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:43:43,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:43:43,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:43:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1613757586, now seen corresponding path program 1 times [2023-12-24 09:43:43,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:43:43,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029558382] [2023-12-24 09:43:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:43:43,877 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 09:43:43,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:43:43,879 INFO L229 MonitoredProcess]: Starting monitored process 16 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 09:43:43,881 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 (16)] Waiting until timeout for monitored process [2023-12-24 09:43:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:43:47,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:43:47,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:44:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 5873 proven. 93 refuted. 0 times theorem prover too weak. 6046 trivial. 0 not checked. [2023-12-24 09:44:41,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:44:49,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:44:49,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029558382] [2023-12-24 09:44:49,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029558382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:44:49,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1334340853] [2023-12-24 09:44:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:44:49,277 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:44:49,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:44:49,278 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:44:49,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-24 09:44:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:44:57,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:44:57,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-24 09:45:49,894 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 09:45:49,903 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 09:45:49,922 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:45:49,935 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 (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:45:50,001 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 (16)] Forceful destruction successful, exit code 0 [2023-12-24 09:45:50,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-24 09:45:50,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 09:45:50,305 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 518 with TraceHistMax 78,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-24 09:45:50,308 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:45:50,310 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 09:45:50,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 09:45:50 BoogieIcfgContainer [2023-12-24 09:45:50,312 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 09:45:50,313 INFO L158 Benchmark]: Toolchain (without parser) took 858476.54ms. Allocated memory is still 316.7MB. Free memory was 263.3MB in the beginning and 141.1MB in the end (delta: 122.1MB). Peak memory consumption was 123.6MB. Max. memory is 8.0GB. [2023-12-24 09:45:50,314 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory was 150.3MB in the beginning and 150.3MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 09:45:50,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.88ms. Allocated memory is still 316.7MB. Free memory was 263.0MB in the beginning and 272.3MB in the end (delta: -9.3MB). Peak memory consumption was 32.8MB. Max. memory is 8.0GB. [2023-12-24 09:45:50,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.29ms. Allocated memory is still 316.7MB. Free memory was 272.3MB in the beginning and 264.4MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-24 09:45:50,315 INFO L158 Benchmark]: Boogie Preprocessor took 157.04ms. Allocated memory is still 316.7MB. Free memory was 264.4MB in the beginning and 236.6MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-24 09:45:50,315 INFO L158 Benchmark]: RCFGBuilder took 76162.47ms. Allocated memory is still 316.7MB. Free memory was 236.6MB in the beginning and 224.3MB in the end (delta: 12.3MB). Peak memory consumption was 40.7MB. Max. memory is 8.0GB. [2023-12-24 09:45:50,315 INFO L158 Benchmark]: TraceAbstraction took 781367.31ms. Allocated memory is still 316.7MB. Free memory was 223.3MB in the beginning and 141.1MB in the end (delta: 82.1MB). Peak memory consumption was 82.6MB. Max. memory is 8.0GB. [2023-12-24 09:45:50,316 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory was 150.3MB in the beginning and 150.3MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 709.88ms. Allocated memory is still 316.7MB. Free memory was 263.0MB in the beginning and 272.3MB in the end (delta: -9.3MB). Peak memory consumption was 32.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.29ms. Allocated memory is still 316.7MB. Free memory was 272.3MB in the beginning and 264.4MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 157.04ms. Allocated memory is still 316.7MB. Free memory was 264.4MB in the beginning and 236.6MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * RCFGBuilder took 76162.47ms. Allocated memory is still 316.7MB. Free memory was 236.6MB in the beginning and 224.3MB in the end (delta: 12.3MB). Peak memory consumption was 40.7MB. Max. memory is 8.0GB. * TraceAbstraction took 781367.31ms. Allocated memory is still 316.7MB. Free memory was 223.3MB in the beginning and 141.1MB in the end (delta: 82.1MB). Peak memory consumption was 82.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 518 with TraceHistMax 78,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 241 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 781.3s, OverallIterations: 9, TraceHistogramMax: 78, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 207.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 3051 SdHoareTripleChecker+Valid, 203.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2983 mSDsluCounter, 6800 SdHoareTripleChecker+Invalid, 194.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2812 mSDsCounter, 400 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 848 IncrementalHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 400 mSolverCounterUnsat, 3988 mSDtfsCounter, 848 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9258 GetRequests, 9186 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 30.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1027occurred in iteration=8, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 802 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 40.8s SatisfiabilityAnalysisTime, 401.0s InterpolantComputationTime, 7227 NumberOfCodeBlocks, 7227 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 7728 ConstructedInterpolants, 0 QuantifiedInterpolants, 19316 SizeOfPredicates, 41 NumberOfNonLiveVariables, 12419 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 179574/180180 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