/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/lcm1_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:07:14,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:07:14,863 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 17:07:14,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:07:14,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:07:14,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:07:14,893 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:07:14,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:07:14,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:07:14,897 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:07:14,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:07:14,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:07:14,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:07:14,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:07:14,899 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:07:14,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:07:14,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:07:14,900 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:07:14,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:07:14,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:07:14,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:07:14,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:07:14,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:07:14,902 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:07:14,902 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:07:14,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:07:14,902 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:07:14,902 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:07:14,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:07:14,903 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:07:14,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:07:14,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:07:14,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:07:14,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:07:14,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:07:14,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:07:14,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:07:14,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:07:14,905 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:07:14,905 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:07:14,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:07:14,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:07:14,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:07:14,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:07:14,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:07:14,906 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:07:14,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:07:15,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:07:15,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:07:15,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:07:15,122 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:07:15,122 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:07:15,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound5.c [2023-12-16 17:07:16,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:07:16,345 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:07:16,345 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound5.c [2023-12-16 17:07:16,350 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38f660f03/8816dc7f274746f68ef2f6654afbb9f9/FLAGbe64ca373 [2023-12-16 17:07:16,360 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38f660f03/8816dc7f274746f68ef2f6654afbb9f9 [2023-12-16 17:07:16,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:07:16,363 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:07:16,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:07:16,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:07:16,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:07:16,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a92806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16, skipping insertion in model container [2023-12-16 17:07:16,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,387 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:07:16,504 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/lcm1_valuebound5.c[552,565] [2023-12-16 17:07:16,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:07:16,548 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:07:16,557 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/lcm1_valuebound5.c[552,565] [2023-12-16 17:07:16,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:07:16,584 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:07:16,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16 WrapperNode [2023-12-16 17:07:16,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:07:16,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:07:16,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:07:16,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:07:16,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,610 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2023-12-16 17:07:16,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:07:16,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:07:16,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:07:16,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:07:16,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,622 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,630 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-12-16 17:07:16,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,634 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:07:16,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:07:16,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:07:16,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:07:16,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (1/1) ... [2023-12-16 17:07:16,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:07:16,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:07:16,665 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 17:07:16,667 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 17:07:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:07:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:07:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 17:07:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 17:07:16,688 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 17:07:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:07:16,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:07:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 17:07:16,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 17:07:16,731 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:07:16,732 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:07:16,844 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:07:16,862 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:07:16,863 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 17:07:16,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:07:16 BoogieIcfgContainer [2023-12-16 17:07:16,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:07:16,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:07:16,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:07:16,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:07:16,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:07:16" (1/3) ... [2023-12-16 17:07:16,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76822d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:07:16, skipping insertion in model container [2023-12-16 17:07:16,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:07:16" (2/3) ... [2023-12-16 17:07:16,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76822d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:07:16, skipping insertion in model container [2023-12-16 17:07:16,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:07:16" (3/3) ... [2023-12-16 17:07:16,871 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound5.c [2023-12-16 17:07:16,885 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:07:16,885 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:07:16,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:07:16,925 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;@1749dab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:07:16,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:07:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 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 17:07:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 17:07:16,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:07:16,937 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:07:16,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:07:16,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:07:16,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1357102633, now seen corresponding path program 1 times [2023-12-16 17:07:16,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:07:16,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203258018] [2023-12-16 17:07:16,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:07:16,950 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 17:07:16,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:07:16,969 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 17:07:16,970 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 17:07:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:07:17,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 17:07:17,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:07:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 17:07:17,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:07:17,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:07:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203258018] [2023-12-16 17:07:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203258018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:07:17,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:07:17,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 17:07:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391624783] [2023-12-16 17:07:17,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:07:17,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 17:07:17,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:07:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 17:07:17,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 17:07:17,149 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 17:07:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:07:17,176 INFO L93 Difference]: Finished difference Result 62 states and 110 transitions. [2023-12-16 17:07:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 17:07:17,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2023-12-16 17:07:17,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:07:17,183 INFO L225 Difference]: With dead ends: 62 [2023-12-16 17:07:17,183 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 17:07:17,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 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 17:07:17,187 INFO L413 NwaCegarLoop]: 41 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, 41 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 17:07:17,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:07:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 17:07:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-16 17:07:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 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 17:07:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2023-12-16 17:07:17,213 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 38 [2023-12-16 17:07:17,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:07:17,213 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2023-12-16 17:07:17,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 17:07:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-12-16 17:07:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 17:07:17,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:07:17,215 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:07:17,229 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 17:07:17,417 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 17:07:17,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:07:17,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:07:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1327714723, now seen corresponding path program 1 times [2023-12-16 17:07:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:07:17,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676864261] [2023-12-16 17:07:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:07:17,419 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 17:07:17,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:07:17,421 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 17:07:17,444 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 17:07:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:07:17,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 17:07:17,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:07:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 17:07:17,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:07:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 17:07:18,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:07:18,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676864261] [2023-12-16 17:07:18,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676864261] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:07:18,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:07:18,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-16 17:07:18,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889438949] [2023-12-16 17:07:18,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:07:18,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:07:18,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:07:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:07:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:07:18,585 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 17:07:23,908 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 [1] [2023-12-16 17:07:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:07:24,381 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2023-12-16 17:07:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:07:24,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2023-12-16 17:07:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:07:24,387 INFO L225 Difference]: With dead ends: 47 [2023-12-16 17:07:24,387 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 17:07:24,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:07:24,389 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:07:24,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 111 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-12-16 17:07:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 17:07:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2023-12-16 17:07:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 17:07:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 59 transitions. [2023-12-16 17:07:24,399 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 59 transitions. Word has length 38 [2023-12-16 17:07:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:07:24,399 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 59 transitions. [2023-12-16 17:07:24,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 17:07:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2023-12-16 17:07:24,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 17:07:24,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:07:24,400 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:07:24,404 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 (3)] Ended with exit code 0 [2023-12-16 17:07:24,603 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 17:07:24,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:07:24,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:07:24,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1872990873, now seen corresponding path program 1 times [2023-12-16 17:07:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:07:24,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725988234] [2023-12-16 17:07:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:07:24,605 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 17:07:24,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:07:24,607 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 17:07:24,608 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 17:07:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:07:24,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:07:24,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:07:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 17:07:25,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:07:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 17:07:31,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:07:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725988234] [2023-12-16 17:07:31,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725988234] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:07:31,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:07:31,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-12-16 17:07:31,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111036622] [2023-12-16 17:07:31,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:07:31,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:07:31,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:07:31,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:07:31,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-12-16 17:07:31,164 INFO L87 Difference]: Start difference. First operand 43 states and 59 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 17:07:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:07:32,931 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2023-12-16 17:07:32,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:07:32,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2023-12-16 17:07:32,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:07:32,939 INFO L225 Difference]: With dead ends: 60 [2023-12-16 17:07:32,939 INFO L226 Difference]: Without dead ends: 58 [2023-12-16 17:07:32,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:07:32,940 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 9 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:07:32,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 153 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 17:07:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-16 17:07:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2023-12-16 17:07:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 36 states have internal predecessors, (44), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 17:07:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2023-12-16 17:07:32,953 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 44 [2023-12-16 17:07:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:07:32,953 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2023-12-16 17:07:32,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 17:07:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2023-12-16 17:07:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 17:07:32,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:07:32,954 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:07:32,960 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 17:07:33,160 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 17:07:33,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:07:33,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:07:33,161 INFO L85 PathProgramCache]: Analyzing trace with hash 503918134, now seen corresponding path program 1 times [2023-12-16 17:07:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:07:33,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338681076] [2023-12-16 17:07:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:07:33,162 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 17:07:33,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:07:33,163 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 17:07:33,180 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 17:07:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:07:33,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:07:33,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:07:33,259 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 17:07:33,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:07:33,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:07:33,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338681076] [2023-12-16 17:07:33,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338681076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:07:33,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:07:33,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:07:33,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70947950] [2023-12-16 17:07:33,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:07:33,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:07:33,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:07:33,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:07:33,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:07:33,261 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:07:33,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:07:33,474 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2023-12-16 17:07:33,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:07:33,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2023-12-16 17:07:33,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:07:33,476 INFO L225 Difference]: With dead ends: 63 [2023-12-16 17:07:33,476 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 17:07:33,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:07:33,477 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 5 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:07:33,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 145 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:07:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 17:07:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-16 17:07:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 states have internal predecessors, (39), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-16 17:07:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2023-12-16 17:07:33,493 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 49 [2023-12-16 17:07:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:07:33,493 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2023-12-16 17:07:33,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:07:33,494 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2023-12-16 17:07:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 17:07:33,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:07:33,494 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:07:33,506 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 17:07:33,697 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 [2023-12-16 17:07:33,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:07:33,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:07:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1337767222, now seen corresponding path program 1 times [2023-12-16 17:07:33,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:07:33,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610937778] [2023-12-16 17:07:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:07:33,703 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 17:07:33,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:07:33,705 INFO L229 MonitoredProcess]: Starting monitored process 6 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 17:07:33,708 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 (6)] Waiting until timeout for monitored process [2023-12-16 17:07:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:07:33,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 17:07:33,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:07:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 17:07:34,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:07:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 17:07:37,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:07:37,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610937778] [2023-12-16 17:07:37,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610937778] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:07:37,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:07:37,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2023-12-16 17:07:37,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893971970] [2023-12-16 17:07:37,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:07:37,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:07:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:07:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:07:37,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:07:37,446 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:07:42,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:07:46,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:07:47,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:07:47,578 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2023-12-16 17:07:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:07:47,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-12-16 17:07:47,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:07:47,585 INFO L225 Difference]: With dead ends: 85 [2023-12-16 17:07:47,585 INFO L226 Difference]: Without dead ends: 83 [2023-12-16 17:07:47,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-16 17:07:47,586 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:07:47,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 113 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2023-12-16 17:07:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-16 17:07:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2023-12-16 17:07:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 53 states have internal predecessors, (68), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 17:07:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 117 transitions. [2023-12-16 17:07:47,602 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 117 transitions. Word has length 52 [2023-12-16 17:07:47,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:07:47,603 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 117 transitions. [2023-12-16 17:07:47,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:07:47,603 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 117 transitions. [2023-12-16 17:07:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 17:07:47,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:07:47,604 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:07:47,607 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 (6)] Ended with exit code 0 [2023-12-16 17:07:47,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 17:07:47,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:07:47,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:07:47,808 INFO L85 PathProgramCache]: Analyzing trace with hash -354361820, now seen corresponding path program 1 times [2023-12-16 17:07:47,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:07:47,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748370764] [2023-12-16 17:07:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:07:47,808 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 17:07:47,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:07:47,809 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 17:07:47,811 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 17:07:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:07:47,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 17:07:47,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:07:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-16 17:07:48,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:07:50,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:07:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748370764] [2023-12-16 17:07:50,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748370764] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 17:07:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [837891634] [2023-12-16 17:07:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:07:50,564 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 17:07:50,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 17:07:50,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 17:07:50,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-16 17:07:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:07:50,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 17:07:50,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:07:50,953 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-16 17:07:50,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:07:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-16 17:07:54,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [837891634] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:07:54,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:07:54,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14, 6] total 19 [2023-12-16 17:07:54,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778909304] [2023-12-16 17:07:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:07:54,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:07:54,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:07:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:07:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:07:54,008 INFO L87 Difference]: Start difference. First operand 82 states and 117 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 17:07:58,707 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 17:07:59,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:07:59,417 INFO L93 Difference]: Finished difference Result 107 states and 152 transitions. [2023-12-16 17:07:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:07:59,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 59 [2023-12-16 17:07:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:07:59,423 INFO L225 Difference]: With dead ends: 107 [2023-12-16 17:07:59,423 INFO L226 Difference]: Without dead ends: 105 [2023-12-16 17:07:59,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:07:59,424 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:07:59,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 104 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2023-12-16 17:07:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-16 17:07:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2023-12-16 17:07:59,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 68 states have internal predecessors, (88), 31 states have call successors, (31), 5 states have call predecessors, (31), 5 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 17:07:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 149 transitions. [2023-12-16 17:07:59,439 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 149 transitions. Word has length 59 [2023-12-16 17:07:59,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:07:59,439 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 149 transitions. [2023-12-16 17:07:59,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 17:07:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 149 transitions. [2023-12-16 17:07:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 17:07:59,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:07:59,440 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:07:59,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-16 17:07:59,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-16 17:07:59,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 17:07:59,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:07:59,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:07:59,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1482847621, now seen corresponding path program 1 times [2023-12-16 17:07:59,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:07:59,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494420646] [2023-12-16 17:07:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:07:59,847 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 17:07:59,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:07:59,848 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:07:59,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 17:07:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:07:59,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 17:07:59,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:08:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-16 17:08:02,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:08:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-16 17:08:07,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:08:07,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494420646] [2023-12-16 17:08:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494420646] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:08:07,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:08:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 21 [2023-12-16 17:08:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498051944] [2023-12-16 17:08:07,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:08:07,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 17:08:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:08:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 17:08:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:08:07,088 INFO L87 Difference]: Start difference. First operand 104 states and 149 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 12 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-16 17:08:14,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:08:18,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 17:08:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:08:20,993 INFO L93 Difference]: Finished difference Result 215 states and 310 transitions. [2023-12-16 17:08:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 17:08:20,995 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 12 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 66 [2023-12-16 17:08:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:08:20,998 INFO L225 Difference]: With dead ends: 215 [2023-12-16 17:08:20,998 INFO L226 Difference]: Without dead ends: 159 [2023-12-16 17:08:21,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:08:21,002 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 97 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 42 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:08:21,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 256 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 398 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2023-12-16 17:08:21,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-16 17:08:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2023-12-16 17:08:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.303030303030303) internal successors, (129), 102 states have internal predecessors, (129), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 17:08:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 218 transitions. [2023-12-16 17:08:21,051 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 218 transitions. Word has length 66 [2023-12-16 17:08:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:08:21,052 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 218 transitions. [2023-12-16 17:08:21,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 12 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-16 17:08:21,058 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 218 transitions. [2023-12-16 17:08:21,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 17:08:21,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:08:21,060 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:08:21,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-16 17:08:21,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:08:21,268 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:08:21,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:08:21,269 INFO L85 PathProgramCache]: Analyzing trace with hash -867442621, now seen corresponding path program 1 times [2023-12-16 17:08:21,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:08:21,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532708362] [2023-12-16 17:08:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:08:21,269 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 17:08:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:08:21,271 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:08:21,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 17:08:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:08:21,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 17:08:21,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:08:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 18 proven. 37 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 17:08:22,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:08:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-16 17:08:30,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:08:30,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532708362] [2023-12-16 17:08:30,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532708362] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:08:30,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:08:30,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2023-12-16 17:08:30,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827840059] [2023-12-16 17:08:30,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:08:30,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 17:08:30,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:08:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 17:08:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-12-16 17:08:30,337 INFO L87 Difference]: Start difference. First operand 152 states and 218 transitions. Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 11 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) Received shutdown request... [2023-12-16 17:08:34,480 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 17:08:34,507 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:08:35,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:08:35,681 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 17:08:35,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 17:08:35,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-12-16 17:08:35,693 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:08:35,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 121 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 17:08:35,694 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:08:35,694 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-16 17:08:35,697 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:08:35,698 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:08:35,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:08:35 BoogieIcfgContainer [2023-12-16 17:08:35,700 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:08:35,700 INFO L158 Benchmark]: Toolchain (without parser) took 79337.48ms. Allocated memory was 213.9MB in the beginning and 272.6MB in the end (delta: 58.7MB). Free memory was 163.8MB in the beginning and 215.6MB in the end (delta: -51.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-16 17:08:35,700 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 213.9MB. Free memory was 165.7MB in the beginning and 165.6MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:08:35,700 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.35ms. Allocated memory is still 213.9MB. Free memory was 163.8MB in the beginning and 151.9MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:08:35,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.63ms. Allocated memory is still 213.9MB. Free memory was 151.9MB in the beginning and 150.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:08:35,701 INFO L158 Benchmark]: Boogie Preprocessor took 28.78ms. Allocated memory is still 213.9MB. 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. [2023-12-16 17:08:35,701 INFO L158 Benchmark]: RCFGBuilder took 223.32ms. Allocated memory is still 213.9MB. Free memory was 148.5MB in the beginning and 134.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 17:08:35,701 INFO L158 Benchmark]: TraceAbstraction took 78835.16ms. Allocated memory was 213.9MB in the beginning and 272.6MB in the end (delta: 58.7MB). Free memory was 134.1MB in the beginning and 215.6MB in the end (delta: -81.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:08:35,702 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 213.9MB. Free memory was 165.7MB in the beginning and 165.6MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.35ms. Allocated memory is still 213.9MB. Free memory was 163.8MB in the beginning and 151.9MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.63ms. Allocated memory is still 213.9MB. Free memory was 151.9MB in the beginning and 150.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.78ms. Allocated memory is still 213.9MB. 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 223.32ms. Allocated memory is still 213.9MB. Free memory was 148.5MB in the beginning and 134.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 78835.16ms. Allocated memory was 213.9MB in the beginning and 272.6MB in the end (delta: 58.7MB). Free memory was 134.1MB in the beginning and 215.6MB in the end (delta: -81.4MB). There was no memory consumed. 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: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 78.8s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 42.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 36.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 1044 SdHoareTripleChecker+Invalid, 35.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 791 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 809 IncrementalHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 253 mSDtfsCounter, 809 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 815 GetRequests, 701 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=7, InterpolantAutomatonStates: 52, 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, 7 MinimizatonAttempts, 12 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 33.4s InterpolantComputationTime, 477 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 793 ConstructedInterpolants, 2 QuantifiedInterpolants, 3600 SizeOfPredicates, 36 NumberOfNonLiveVariables, 844 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 998/1178 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