/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/nla-digbench-scaling/dijkstra-u_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:46:19,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:46:20,000 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:46:20,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:46:20,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:46:20,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:46:20,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:46:20,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:46:20,031 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:46:20,034 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:46:20,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:46:20,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:46:20,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:46:20,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:46:20,037 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:46:20,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:46:20,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:46:20,038 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:46:20,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:46:20,039 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:46:20,039 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:46:20,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:46:20,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:46:20,040 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:46:20,040 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:46:20,040 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:46:20,040 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:46:20,040 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:46:20,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:46:20,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:46:20,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:46:20,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:46:20,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:46:20,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:46:20,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:46:20,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:46:20,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:46:20,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:46:20,043 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:46:20,043 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:46:20,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:46:20,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:46:20,043 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:46:20,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:46:20,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:46:20,044 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:46:20,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:46:20,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:46:20,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:46:20,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:46:20,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:46:20,235 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:46:20,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound20.c [2023-12-16 16:46:21,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:46:21,407 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:46:21,408 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound20.c [2023-12-16 16:46:21,413 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36fdac9fc/04a36e38dedd4e9888072b0a9b53f9ab/FLAG0f5c10232 [2023-12-16 16:46:21,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36fdac9fc/04a36e38dedd4e9888072b0a9b53f9ab [2023-12-16 16:46:21,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:46:21,425 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:46:21,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:46:21,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:46:21,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:46:21,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac92487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21, skipping insertion in model container [2023-12-16 16:46:21,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,445 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:46:21,552 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound20.c[525,538] [2023-12-16 16:46:21,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:46:21,585 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:46:21,594 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound20.c[525,538] [2023-12-16 16:46:21,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:46:21,618 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:46:21,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21 WrapperNode [2023-12-16 16:46:21,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:46:21,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:46:21,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:46:21,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:46:21,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,645 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2023-12-16 16:46:21,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:46:21,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:46:21,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:46:21,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:46:21,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,657 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,665 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]. [2023-12-16 16:46:21,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:46:21,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:46:21,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:46:21,679 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:46:21,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (1/1) ... [2023-12-16 16:46:21,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:46:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:46:21,738 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) [2023-12-16 16:46:21,740 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 [2023-12-16 16:46:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:46:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:46:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 16:46:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 16:46:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:46:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:46:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 16:46:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 16:46:21,850 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:46:21,853 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:46:22,078 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:46:22,094 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:46:22,094 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 16:46:22,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:46:22 BoogieIcfgContainer [2023-12-16 16:46:22,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:46:22,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:46:22,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:46:22,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:46:22,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:46:21" (1/3) ... [2023-12-16 16:46:22,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfafbb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:46:22, skipping insertion in model container [2023-12-16 16:46:22,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:21" (2/3) ... [2023-12-16 16:46:22,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfafbb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:46:22, skipping insertion in model container [2023-12-16 16:46:22,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:46:22" (3/3) ... [2023-12-16 16:46:22,101 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound20.c [2023-12-16 16:46:22,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:46:22,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:46:22,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:46:22,168 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;@255e3075, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:46:22,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:46:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 16:46:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 16:46:22,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:46:22,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:46:22,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:46:22,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:46:22,182 INFO L85 PathProgramCache]: Analyzing trace with hash -10312671, now seen corresponding path program 1 times [2023-12-16 16:46:22,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:46:22,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000356681] [2023-12-16 16:46:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:22,192 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 [2023-12-16 16:46:22,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:46:22,195 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) [2023-12-16 16:46:22,198 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 [2023-12-16 16:46:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:22,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:46:22,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:46:22,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:46:22,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:46:22,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000356681] [2023-12-16 16:46:22,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000356681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:46:22,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:46:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:46:22,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926391239] [2023-12-16 16:46:22,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:46:22,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:46:22,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:46:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:46:22,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:46:22,369 INFO L87 Difference]: Start difference. First operand has 30 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:46:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:46:22,396 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2023-12-16 16:46:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:46:22,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-16 16:46:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:46:22,403 INFO L225 Difference]: With dead ends: 58 [2023-12-16 16:46:22,404 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 16:46:22,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:46:22,408 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:46:22,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:46:22,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 16:46:22,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-16 16:46:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 16:46:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2023-12-16 16:46:22,438 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 18 [2023-12-16 16:46:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:46:22,438 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2023-12-16 16:46:22,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:46:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-12-16 16:46:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 16:46:22,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:46:22,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:46:22,445 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 [2023-12-16 16:46:22,644 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 [2023-12-16 16:46:22,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:46:22,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:46:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash 763841584, now seen corresponding path program 1 times [2023-12-16 16:46:22,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:46:22,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188291569] [2023-12-16 16:46:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:22,646 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 [2023-12-16 16:46:22,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:46:22,648 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) [2023-12-16 16:46:22,653 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 [2023-12-16 16:46:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:22,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 16:46:22,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:46:22,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:46:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:46:23,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:46:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188291569] [2023-12-16 16:46:23,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188291569] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 16:46:23,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 16:46:23,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-16 16:46:23,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739204143] [2023-12-16 16:46:23,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:46:23,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:46:23,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:46:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:46:23,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:46:23,046 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:46:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:46:24,731 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2023-12-16 16:46:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 16:46:24,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-16 16:46:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:46:24,749 INFO L225 Difference]: With dead ends: 47 [2023-12-16 16:46:24,750 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 16:46:24,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:46:24,751 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:46:24,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 149 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 16:46:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 16:46:24,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2023-12-16 16:46:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 16:46:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2023-12-16 16:46:24,760 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 19 [2023-12-16 16:46:24,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:46:24,761 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2023-12-16 16:46:24,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:46:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2023-12-16 16:46:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 16:46:24,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:46:24,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:46:24,775 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 [2023-12-16 16:46:24,972 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 [2023-12-16 16:46:24,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:46:24,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:46:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash -82339253, now seen corresponding path program 1 times [2023-12-16 16:46:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:46:24,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943502973] [2023-12-16 16:46:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:24,974 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 [2023-12-16 16:46:24,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:46:24,975 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) [2023-12-16 16:46:24,984 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 [2023-12-16 16:46:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:25,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 16:46:25,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:46:25,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:46:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:46:25,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:46:25,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943502973] [2023-12-16 16:46:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943502973] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:46:25,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:46:25,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-12-16 16:46:25,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020945443] [2023-12-16 16:46:25,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:46:25,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 16:46:25,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:46:25,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 16:46:25,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:46:25,871 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 12 states have internal predecessors, (24), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:46:31,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:46:35,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:46:38,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:46:46,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:46:50,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:46:54,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:46:58,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:47:02,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:47:06,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:47:06,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:06,989 INFO L93 Difference]: Finished difference Result 128 states and 204 transitions. [2023-12-16 16:47:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 16:47:07,001 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 12 states have internal predecessors, (24), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 21 [2023-12-16 16:47:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:07,003 INFO L225 Difference]: With dead ends: 128 [2023-12-16 16:47:07,003 INFO L226 Difference]: Without dead ends: 108 [2023-12-16 16:47:07,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-12-16 16:47:07,005 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 51 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 120 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:07,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 387 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 369 Invalid, 8 Unknown, 0 Unchecked, 40.6s Time] [2023-12-16 16:47:07,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-16 16:47:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 74. [2023-12-16 16:47:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 16:47:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 109 transitions. [2023-12-16 16:47:07,026 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 109 transitions. Word has length 21 [2023-12-16 16:47:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:07,026 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 109 transitions. [2023-12-16 16:47:07,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 12 states have internal predecessors, (24), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:47:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 109 transitions. [2023-12-16 16:47:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 16:47:07,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:07,027 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:07,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 16:47:07,229 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 [2023-12-16 16:47:07,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:07,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash -93184560, now seen corresponding path program 1 times [2023-12-16 16:47:07,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:07,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550278012] [2023-12-16 16:47:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:07,231 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 [2023-12-16 16:47:07,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:07,235 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) [2023-12-16 16:47:07,236 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 [2023-12-16 16:47:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:07,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 16:47:07,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 16:47:07,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:11,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:11,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550278012] [2023-12-16 16:47:11,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550278012] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 16:47:11,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [866121910] [2023-12-16 16:47:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:11,605 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 16:47:11,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 16:47:11,649 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) [2023-12-16 16:47:11,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-16 16:47:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:11,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:47:11,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 16:47:13,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:47:13,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [866121910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:47:13,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 16:47:13,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2023-12-16 16:47:13,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906430906] [2023-12-16 16:47:13,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:47:13,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:47:13,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:13,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:47:13,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:47:13,147 INFO L87 Difference]: Start difference. First operand 74 states and 109 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:47:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:15,497 INFO L93 Difference]: Finished difference Result 95 states and 137 transitions. [2023-12-16 16:47:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:47:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-12-16 16:47:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:15,515 INFO L225 Difference]: With dead ends: 95 [2023-12-16 16:47:15,515 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 16:47:15,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:47:15,516 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:15,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 122 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 16:47:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 16:47:15,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-16 16:47:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 43 states have internal predecessors, (48), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 16:47:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2023-12-16 16:47:15,541 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 29 [2023-12-16 16:47:15,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:15,541 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2023-12-16 16:47:15,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:47:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2023-12-16 16:47:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 16:47:15,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:15,543 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:15,555 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 [2023-12-16 16:47:15,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-16 16:47:15,961 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 [2023-12-16 16:47:15,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:15,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash 471953405, now seen corresponding path program 1 times [2023-12-16 16:47:15,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:15,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448763597] [2023-12-16 16:47:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:15,963 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 [2023-12-16 16:47:15,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:15,964 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) [2023-12-16 16:47:15,974 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 [2023-12-16 16:47:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:16,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 16:47:16,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:47:16,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:47:23,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:23,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448763597] [2023-12-16 16:47:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448763597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:23,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-12-16 16:47:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643743769] [2023-12-16 16:47:23,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 16:47:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:23,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 16:47:23,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-12-16 16:47:23,675 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 16:47:37,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-16 16:47:41,416 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:47:41,456 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:47:41,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:47:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 16:47:41,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2023-12-16 16:47:41,922 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 40 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:41,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 246 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 189 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2023-12-16 16:47:41,927 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:47:41,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:42,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:42,129 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (79states) and FLOYD_HOARE automaton (currently 18 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (63 states constructed, input type IntersectNwa). [2023-12-16 16:47:42,133 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-16 16:47:42,135 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:47:42,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:47:42 BoogieIcfgContainer [2023-12-16 16:47:42,137 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:47:42,138 INFO L158 Benchmark]: Toolchain (without parser) took 80712.46ms. Allocated memory was 244.3MB in the beginning and 293.6MB in the end (delta: 49.3MB). Free memory was 195.7MB in the beginning and 170.3MB in the end (delta: 25.4MB). Peak memory consumption was 75.7MB. Max. memory is 8.0GB. [2023-12-16 16:47:42,138 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 196.1MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:47:42,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.36ms. Allocated memory is still 244.3MB. Free memory was 195.2MB in the beginning and 182.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 16:47:42,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.44ms. Allocated memory is still 244.3MB. Free memory was 182.6MB in the beginning and 181.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:47:42,139 INFO L158 Benchmark]: Boogie Preprocessor took 32.39ms. Allocated memory is still 244.3MB. Free memory was 181.0MB in the beginning and 178.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:47:42,139 INFO L158 Benchmark]: RCFGBuilder took 415.75ms. Allocated memory is still 244.3MB. Free memory was 178.9MB in the beginning and 162.7MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 16:47:42,139 INFO L158 Benchmark]: TraceAbstraction took 80040.98ms. Allocated memory was 244.3MB in the beginning and 293.6MB in the end (delta: 49.3MB). Free memory was 162.1MB in the beginning and 170.3MB in the end (delta: -8.2MB). Peak memory consumption was 42.2MB. Max. memory is 8.0GB. [2023-12-16 16:47:42,141 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 196.1MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 192.36ms. Allocated memory is still 244.3MB. Free memory was 195.2MB in the beginning and 182.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.44ms. Allocated memory is still 244.3MB. Free memory was 182.6MB in the beginning and 181.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.39ms. Allocated memory is still 244.3MB. Free memory was 181.0MB in the beginning and 178.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 415.75ms. Allocated memory is still 244.3MB. Free memory was 178.9MB in the beginning and 162.7MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 80040.98ms. Allocated memory was 244.3MB in the beginning and 293.6MB in the end (delta: 49.3MB). Free memory was 162.1MB in the beginning and 170.3MB in the end (delta: -8.2MB). Peak memory consumption was 42.2MB. 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: 14]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 14). Cancelled while NwaCegarLoop was constructing difference of abstraction (79states) and FLOYD_HOARE automaton (currently 18 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (63 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 80.0s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 63.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 56.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106 mSDsluCounter, 943 SdHoareTripleChecker+Invalid, 54.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 759 mSDsCounter, 145 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 644 IncrementalHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 145 mSolverCounterUnsat, 184 mSDtfsCounter, 644 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 16.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=4, 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 43 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.3s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 203 ConstructedInterpolants, 0 QuantifiedInterpolants, 885 SizeOfPredicates, 11 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 44/72 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