/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_amount10_file-36.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 06:14:21,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 06:14:21,801 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 06:14:21,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 06:14:21,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 06:14:21,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 06:14:21,825 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 06:14:21,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 06:14:21,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 06:14:21,829 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 06:14:21,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 06:14:21,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 06:14:21,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 06:14:21,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 06:14:21,832 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 06:14:21,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 06:14:21,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 06:14:21,833 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 06:14:21,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 06:14:21,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 06:14:21,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 06:14:21,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 06:14:21,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 06:14:21,835 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 06:14:21,835 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 06:14:21,835 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 06:14:21,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 06:14:21,836 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 06:14:21,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 06:14:21,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 06:14:21,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 06:14:21,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 06:14:21,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 06:14:21,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 06:14:21,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 06:14:21,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 06:14:21,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 06:14:21,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 06:14:21,838 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 06:14:21,838 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 06:14:21,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 06:14:21,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 06:14:21,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 06:14:21,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 06:14:21,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 06:14:21,839 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 06:14:21,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 06:14:22,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 06:14:22,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 06:14:22,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 06:14:22,102 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 06:14:22,102 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 06:14:22,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-36.i [2023-12-24 06:14:23,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 06:14:23,375 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 06:14:23,375 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-36.i [2023-12-24 06:14:23,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c9e02ff1/7d1017ebfe75451ba0bc1c362694fad8/FLAGd77bfa15a [2023-12-24 06:14:23,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c9e02ff1/7d1017ebfe75451ba0bc1c362694fad8 [2023-12-24 06:14:23,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 06:14:23,397 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 06:14:23,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 06:14:23,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 06:14:23,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 06:14:23,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9fcd6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23, skipping insertion in model container [2023-12-24 06:14:23,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,424 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 06:14:23,565 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_amount10_file-36.i[915,928] [2023-12-24 06:14:23,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 06:14:23,605 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 06:14:23,613 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_amount10_file-36.i[915,928] [2023-12-24 06:14:23,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 06:14:23,640 INFO L206 MainTranslator]: Completed translation [2023-12-24 06:14:23,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23 WrapperNode [2023-12-24 06:14:23,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 06:14:23,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 06:14:23,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 06:14:23,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 06:14:23,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,668 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2023-12-24 06:14:23,669 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 06:14:23,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 06:14:23,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 06:14:23,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 06:14:23,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,679 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,686 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 06:14:23,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 06:14:23,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 06:14:23,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 06:14:23,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 06:14:23,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (1/1) ... [2023-12-24 06:14:23,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 06:14:23,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 06:14:23,761 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 06:14:23,774 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 06:14:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 06:14:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 06:14:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 06:14:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 06:14:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 06:14:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 06:14:23,869 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 06:14:23,871 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 06:14:24,020 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 06:14:24,048 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 06:14:24,048 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 06:14:24,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:14:24 BoogieIcfgContainer [2023-12-24 06:14:24,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 06:14:24,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 06:14:24,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 06:14:24,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 06:14:24,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 06:14:23" (1/3) ... [2023-12-24 06:14:24,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517c087c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:14:24, skipping insertion in model container [2023-12-24 06:14:24,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:14:23" (2/3) ... [2023-12-24 06:14:24,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517c087c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:14:24, skipping insertion in model container [2023-12-24 06:14:24,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:14:24" (3/3) ... [2023-12-24 06:14:24,056 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-36.i [2023-12-24 06:14:24,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 06:14:24,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 06:14:24,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 06:14:24,122 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;@2ba4025f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 06:14:24,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 06:14:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 06:14:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-24 06:14:24,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:14:24,136 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:24,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:14:24,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:14:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1990853393, now seen corresponding path program 1 times [2023-12-24 06:14:24,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:14:24,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101850545] [2023-12-24 06:14:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:14:24,152 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 06:14:24,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:14:24,171 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 06:14:24,213 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 06:14:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:14:24,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 06:14:24,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:14:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-24 06:14:24,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 06:14:24,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:14:24,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101850545] [2023-12-24 06:14:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101850545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 06:14:24,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 06:14:24,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 06:14:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158403716] [2023-12-24 06:14:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:14:24,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 06:14:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:14:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 06:14:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 06:14:24,411 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 06:14:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:14:24,444 INFO L93 Difference]: Finished difference Result 69 states and 118 transitions. [2023-12-24 06:14:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 06:14:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2023-12-24 06:14:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:14:24,453 INFO L225 Difference]: With dead ends: 69 [2023-12-24 06:14:24,453 INFO L226 Difference]: Without dead ends: 34 [2023-12-24 06:14:24,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 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 06:14:24,458 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 06:14:24,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 06:14:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-24 06:14:24,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-24 06:14:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 06:14:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2023-12-24 06:14:24,492 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 74 [2023-12-24 06:14:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:14:24,492 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2023-12-24 06:14:24,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 06:14:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2023-12-24 06:14:24,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-24 06:14:24,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:14:24,495 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:24,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 06:14:24,708 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 06:14:24,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:14:24,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:14:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash 456053999, now seen corresponding path program 1 times [2023-12-24 06:14:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:14:24,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008530370] [2023-12-24 06:14:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:14:24,711 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 06:14:24,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:14:24,713 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 06:14:24,715 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 06:14:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:14:24,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 06:14:24,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:14:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 06:14:25,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:14:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 06:14:26,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:14:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008530370] [2023-12-24 06:14:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008530370] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 06:14:26,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 06:14:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-24 06:14:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465379191] [2023-12-24 06:14:26,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 06:14:26,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 06:14:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:14:26,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 06:14:26,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-24 06:14:26,086 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 06:14:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:14:26,161 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2023-12-24 06:14:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 06:14:26,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2023-12-24 06:14:26,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:14:26,163 INFO L225 Difference]: With dead ends: 60 [2023-12-24 06:14:26,163 INFO L226 Difference]: Without dead ends: 58 [2023-12-24 06:14:26,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-24 06:14:26,164 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 32 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 06:14:26,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 118 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 06:14:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-24 06:14:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2023-12-24 06:14:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 35 states have internal predecessors, (42), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 06:14:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 82 transitions. [2023-12-24 06:14:26,174 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 82 transitions. Word has length 74 [2023-12-24 06:14:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:14:26,174 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 82 transitions. [2023-12-24 06:14:26,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 06:14:26,175 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 82 transitions. [2023-12-24 06:14:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-24 06:14:26,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 06:14:26,176 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:26,181 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 06:14:26,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:14:26,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 06:14:26,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 06:14:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash 513312301, now seen corresponding path program 1 times [2023-12-24 06:14:26,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 06:14:26,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308149745] [2023-12-24 06:14:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 06:14:26,381 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 06:14:26,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 06:14:26,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 06:14:26,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 06:14:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 06:14:26,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 06:14:26,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 06:14:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 06:14:26,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 06:14:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 06:14:27,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 06:14:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308149745] [2023-12-24 06:14:27,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308149745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 06:14:27,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 06:14:27,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-24 06:14:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255285608] [2023-12-24 06:14:27,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 06:14:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 06:14:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 06:14:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 06:14:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-24 06:14:27,511 INFO L87 Difference]: Start difference. First operand 57 states and 82 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-24 06:14:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 06:14:27,686 INFO L93 Difference]: Finished difference Result 119 states and 167 transitions. [2023-12-24 06:14:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 06:14:27,686 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 74 [2023-12-24 06:14:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 06:14:27,687 INFO L225 Difference]: With dead ends: 119 [2023-12-24 06:14:27,687 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 06:14:27,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2023-12-24 06:14:27,688 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 06:14:27,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 95 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 06:14:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 06:14:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 06:14:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 06:14:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 06:14:27,689 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2023-12-24 06:14:27,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 06:14:27,689 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 06:14:27,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-24 06:14:27,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 06:14:27,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 06:14:27,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 06:14:27,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 06:14:27,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 06:14:27,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 06:14:27,993 INFO L899 garLoopResultBuilder]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2023-12-24 06:14:27,994 INFO L895 garLoopResultBuilder]: At program point L64(line 64) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,994 INFO L895 garLoopResultBuilder]: At program point L64-1(line 64) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,994 INFO L899 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2023-12-24 06:14:27,994 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,994 INFO L895 garLoopResultBuilder]: At program point L52-1(line 52) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,994 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-24 06:14:27,994 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-24 06:14:27,994 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-24 06:14:27,994 INFO L895 garLoopResultBuilder]: At program point L77-2(lines 77 83) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,994 INFO L899 garLoopResultBuilder]: For program point L77-3(lines 77 83) no Hoare annotation was computed. [2023-12-24 06:14:27,995 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 44) no Hoare annotation was computed. [2023-12-24 06:14:27,995 INFO L899 garLoopResultBuilder]: For program point L65(lines 47 66) no Hoare annotation was computed. [2023-12-24 06:14:27,995 INFO L895 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: (= (_ bv1 8) ~var_1_1~0) [2023-12-24 06:14:27,995 INFO L895 garLoopResultBuilder]: At program point L61-1(line 61) the Hoare annotation is: (= (_ bv1 8) ~var_1_1~0) [2023-12-24 06:14:27,995 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-24 06:14:27,995 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-12-24 06:14:27,995 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,995 INFO L895 garLoopResultBuilder]: At program point L49-1(line 49) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,995 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 43) no Hoare annotation was computed. [2023-12-24 06:14:27,995 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 46) no Hoare annotation was computed. [2023-12-24 06:14:27,995 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-24 06:14:27,995 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2023-12-24 06:14:27,995 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,995 INFO L895 garLoopResultBuilder]: At program point L58-1(line 58) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,996 INFO L899 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2023-12-24 06:14:27,996 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-24 06:14:27,996 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-12-24 06:14:27,996 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,996 INFO L895 garLoopResultBuilder]: At program point L55-1(line 55) the Hoare annotation is: (and (bvsle ((_ zero_extend 24) ~var_1_6~0) (_ bv0 32)) (= (_ bv1 8) ~var_1_1~0)) [2023-12-24 06:14:27,996 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 45) no Hoare annotation was computed. [2023-12-24 06:14:27,996 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 37) no Hoare annotation was computed. [2023-12-24 06:14:27,996 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-24 06:14:27,996 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-24 06:14:27,996 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-24 06:14:27,996 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-24 06:14:28,014 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-24 06:14:28,015 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 06:14:28,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 06:14:28 BoogieIcfgContainer [2023-12-24 06:14:28,022 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 06:14:28,023 INFO L158 Benchmark]: Toolchain (without parser) took 4625.56ms. Allocated memory was 227.5MB in the beginning and 395.3MB in the end (delta: 167.8MB). Free memory was 164.7MB in the beginning and 163.0MB in the end (delta: 1.7MB). Peak memory consumption was 170.3MB. Max. memory is 8.0GB. [2023-12-24 06:14:28,023 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 227.5MB. Free memory is still 177.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 06:14:28,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.99ms. Allocated memory is still 227.5MB. Free memory was 164.5MB in the beginning and 152.5MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 06:14:28,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.85ms. Allocated memory is still 227.5MB. Free memory was 152.5MB in the beginning and 150.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 06:14:28,024 INFO L158 Benchmark]: Boogie Preprocessor took 27.15ms. Allocated memory is still 227.5MB. Free memory was 150.5MB in the beginning and 148.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 06:14:28,026 INFO L158 Benchmark]: RCFGBuilder took 352.14ms. Allocated memory was 227.5MB in the beginning and 298.8MB in the end (delta: 71.3MB). Free memory was 148.3MB in the beginning and 254.5MB in the end (delta: -106.2MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2023-12-24 06:14:28,026 INFO L158 Benchmark]: TraceAbstraction took 3971.16ms. Allocated memory was 298.8MB in the beginning and 395.3MB in the end (delta: 96.5MB). Free memory was 254.0MB in the beginning and 163.0MB in the end (delta: 91.0MB). Peak memory consumption was 187.4MB. Max. memory is 8.0GB. [2023-12-24 06:14:28,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 227.5MB. Free memory is still 177.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 240.99ms. Allocated memory is still 227.5MB. Free memory was 164.5MB in the beginning and 152.5MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.85ms. Allocated memory is still 227.5MB. Free memory was 152.5MB in the beginning and 150.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.15ms. Allocated memory is still 227.5MB. Free memory was 150.5MB in the beginning and 148.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 352.14ms. Allocated memory was 227.5MB in the beginning and 298.8MB in the end (delta: 71.3MB). Free memory was 148.3MB in the beginning and 254.5MB in the end (delta: -106.2MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * TraceAbstraction took 3971.16ms. Allocated memory was 298.8MB in the beginning and 395.3MB in the end (delta: 96.5MB). Free memory was 254.0MB in the beginning and 163.0MB in the end (delta: 91.0MB). Peak memory consumption was 187.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 259 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 112 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 371 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 65 PreInvPairs, 87 NumberOfFragments, 95 HoareAnnotationTreeSize, 65 FormulaSimplifications, 391 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FormulaSimplificationsInter, 218 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 365 ConstructedInterpolants, 0 QuantifiedInterpolants, 987 SizeOfPredicates, 41 NumberOfNonLiveVariables, 371 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 1302/1320 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 77]: Loop Invariant Derived loop invariant: ((var_1_6 <= 0) && (1 == var_1_1)) RESULT: Ultimate proved your program to be correct! [2023-12-24 06:14:28,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...