/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:46:19,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:46:19,080 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:46:19,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:46:19,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:46:19,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:46:19,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:46:19,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:46:19,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:46:19,110 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:46:19,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:46:19,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:46:19,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:46:19,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:46:19,112 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:46:19,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:46:19,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:46:19,113 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:46:19,113 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:46:19,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:46:19,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:46:19,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:46:19,114 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:46:19,114 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:46:19,114 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:46:19,115 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:46:19,115 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:46:19,115 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:46:19,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:46:19,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:46:19,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:46:19,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:46:19,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:46:19,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:46:19,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:46:19,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:46:19,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:46:19,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:46:19,117 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:46:19,117 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:46:19,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:46:19,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:46:19,117 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:46:19,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:46:19,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:46:19,118 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:46:19,118 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:46:19,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:46:19,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:46:19,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:46:19,317 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:46:19,317 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:46:19,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound2.c [2023-12-16 16:46:20,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:46:20,586 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:46:20,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound2.c [2023-12-16 16:46:20,593 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb9db4d5/9d92988ed7724f869b01f482d6eb0393/FLAG97a967998 [2023-12-16 16:46:20,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb9db4d5/9d92988ed7724f869b01f482d6eb0393 [2023-12-16 16:46:20,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:46:20,608 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:46:20,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:46:20,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:46:20,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:46:20,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50341c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20, skipping insertion in model container [2023-12-16 16:46:20,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,635 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:46:20,736 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2023-12-16 16:46:20,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:46:20,779 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:46:20,788 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2023-12-16 16:46:20,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:46:20,807 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:46:20,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20 WrapperNode [2023-12-16 16:46:20,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:46:20,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:46:20,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:46:20,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:46:20,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,833 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2023-12-16 16:46:20,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:46:20,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:46:20,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:46:20,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:46:20,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,845 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,861 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 16:46:20,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:46:20,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:46:20,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:46:20,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:46:20,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (1/1) ... [2023-12-16 16:46:20,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:46:20,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:46:20,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 16:46:20,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 16:46:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:46:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:46:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 16:46:20,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 16:46:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:46:20,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:46:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 16:46:20,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 16:46:21,008 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:46:21,010 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:46:21,141 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:46:21,170 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:46:21,171 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 16:46:21,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:46:21 BoogieIcfgContainer [2023-12-16 16:46:21,171 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:46:21,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:46:21,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:46:21,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:46:21,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:46:20" (1/3) ... [2023-12-16 16:46:21,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bf966a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:46:21, skipping insertion in model container [2023-12-16 16:46:21,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:46:20" (2/3) ... [2023-12-16 16:46:21,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bf966a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:46:21, skipping insertion in model container [2023-12-16 16:46:21,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:46:21" (3/3) ... [2023-12-16 16:46:21,181 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.c [2023-12-16 16:46:21,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:46:21,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:46:21,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:46:21,233 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;@272d24d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:46:21,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:46:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 16:46:21,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 16:46:21,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:46:21,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:46:21,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:46:21,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:46:21,246 INFO L85 PathProgramCache]: Analyzing trace with hash -10312671, now seen corresponding path program 1 times [2023-12-16 16:46:21,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:46:21,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149604471] [2023-12-16 16:46:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:21,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:46:21,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:46:21,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:46:21,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:46:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:21,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:46:21,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:46:21,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:46:21,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:46:21,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149604471] [2023-12-16 16:46:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149604471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:46:21,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:46:21,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:46:21,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079831514] [2023-12-16 16:46:21,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:46:21,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:46:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:46:21,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:46:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:46:21,399 INFO L87 Difference]: Start difference. First operand has 30 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:46:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:46:21,424 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2023-12-16 16:46:21,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:46:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-16 16:46:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:46:21,430 INFO L225 Difference]: With dead ends: 58 [2023-12-16 16:46:21,431 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 16:46:21,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:46:21,435 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:46:21,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:46:21,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 16:46:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-16 16:46:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 16:46:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2023-12-16 16:46:21,460 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 18 [2023-12-16 16:46:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:46:21,460 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2023-12-16 16:46:21,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:46:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-12-16 16:46:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 16:46:21,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:46:21,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:46:21,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 16:46:21,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:46:21,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:46:21,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:46:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash 763841584, now seen corresponding path program 1 times [2023-12-16 16:46:21,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:46:21,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271309242] [2023-12-16 16:46:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:21,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:46:21,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:46:21,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:46:21,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 16:46:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:21,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 16:46:21,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:46:22,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:46:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:46:22,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:46:22,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271309242] [2023-12-16 16:46:22,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271309242] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 16:46:22,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 16:46:22,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-16 16:46:22,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823073100] [2023-12-16 16:46:22,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:46:22,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:46:22,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:46:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:46:22,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:46:22,181 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:46:24,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:46:24,104 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2023-12-16 16:46:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 16:46:24,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-16 16:46:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:46:24,118 INFO L225 Difference]: With dead ends: 47 [2023-12-16 16:46:24,119 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 16:46:24,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:46:24,120 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 16:46:24,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 149 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 16:46:24,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 16:46:24,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2023-12-16 16:46:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 16:46:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2023-12-16 16:46:24,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 19 [2023-12-16 16:46:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:46:24,132 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2023-12-16 16:46:24,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:46:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2023-12-16 16:46:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 16:46:24,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:46:24,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:46:24,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 16:46:24,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:46:24,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:46:24,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:46:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash -82339253, now seen corresponding path program 1 times [2023-12-16 16:46:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:46:24,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333299015] [2023-12-16 16:46:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:24,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:46:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:46:24,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:46:24,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:46:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:24,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 16:46:24,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:46:24,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:46:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:46:25,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:46:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333299015] [2023-12-16 16:46:25,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333299015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:46:25,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:46:25,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-16 16:46:25,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986010990] [2023-12-16 16:46:25,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:46:25,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 16:46:25,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:46:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 16:46:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:46:25,359 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 16:46:30,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:46:30,043 INFO L93 Difference]: Finished difference Result 93 states and 141 transitions. [2023-12-16 16:46:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:46:30,044 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2023-12-16 16:46:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:46:30,046 INFO L225 Difference]: With dead ends: 93 [2023-12-16 16:46:30,046 INFO L226 Difference]: Without dead ends: 73 [2023-12-16 16:46:30,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-12-16 16:46:30,047 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 40 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:46:30,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 358 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-16 16:46:30,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-16 16:46:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2023-12-16 16:46:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 32 states have internal predecessors, (34), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 16:46:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 83 transitions. [2023-12-16 16:46:30,061 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 83 transitions. Word has length 21 [2023-12-16 16:46:30,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:46:30,061 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 83 transitions. [2023-12-16 16:46:30,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 16:46:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 83 transitions. [2023-12-16 16:46:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 16:46:30,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:46:30,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:46:30,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 16:46:30,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:46:30,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:46:30,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:46:30,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1187149747, now seen corresponding path program 1 times [2023-12-16 16:46:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:46:30,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323467390] [2023-12-16 16:46:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:30,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:46:30,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:46:30,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:46:30,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:46:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:30,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 16:46:30,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:46:30,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:46:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:46:34,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:46:34,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323467390] [2023-12-16 16:46:34,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323467390] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 16:46:34,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 16:46:34,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-16 16:46:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436994772] [2023-12-16 16:46:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:46:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:46:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:46:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:46:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:46:34,650 INFO L87 Difference]: Start difference. First operand 59 states and 83 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 16:46:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:46:38,209 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2023-12-16 16:46:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:46:38,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-12-16 16:46:38,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:46:38,213 INFO L225 Difference]: With dead ends: 74 [2023-12-16 16:46:38,213 INFO L226 Difference]: Without dead ends: 72 [2023-12-16 16:46:38,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:46:38,214 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:46:38,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 167 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-16 16:46:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-16 16:46:38,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2023-12-16 16:46:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 32 states have (on average 1.15625) internal successors, (37), 35 states have internal predecessors, (37), 30 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-16 16:46:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2023-12-16 16:46:38,238 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 24 [2023-12-16 16:46:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:46:38,238 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2023-12-16 16:46:38,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 16:46:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2023-12-16 16:46:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 16:46:38,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:46:38,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:46:38,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 16:46:38,444 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 16:46:38,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:46:38,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:46:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1153056136, now seen corresponding path program 1 times [2023-12-16 16:46:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:46:38,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074203374] [2023-12-16 16:46:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:38,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:46:38,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:46:38,470 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 16:46:38,497 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 16:46:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:38,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 16:46:38,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:46:38,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:46:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:46:41,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:46:41,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074203374] [2023-12-16 16:46:41,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074203374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:46:41,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:46:41,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-12-16 16:46:41,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000065762] [2023-12-16 16:46:41,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:46:41,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 16:46:41,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:46:41,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 16:46:41,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:46:41,766 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 16:46:46,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:46:48,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:46:53,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:46:53,910 INFO L93 Difference]: Finished difference Result 83 states and 111 transitions. [2023-12-16 16:46:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 16:46:53,923 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2023-12-16 16:46:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:46:53,924 INFO L225 Difference]: With dead ends: 83 [2023-12-16 16:46:53,924 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 16:46:53,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:46:53,925 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 30 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-16 16:46:53,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 286 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-16 16:46:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 16:46:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2023-12-16 16:46:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 38 states have (on average 1.131578947368421) internal successors, (43), 42 states have internal predecessors, (43), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-16 16:46:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 103 transitions. [2023-12-16 16:46:53,937 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 103 transitions. Word has length 26 [2023-12-16 16:46:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:46:53,938 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 103 transitions. [2023-12-16 16:46:53,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 16:46:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 103 transitions. [2023-12-16 16:46:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 16:46:53,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:46:53,939 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:46:53,952 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 16:46:54,143 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 16:46:54,143 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:46:54,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:46:54,143 INFO L85 PathProgramCache]: Analyzing trace with hash -93184560, now seen corresponding path program 1 times [2023-12-16 16:46:54,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:46:54,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148175290] [2023-12-16 16:46:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:54,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:46:54,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:46:54,145 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:46:54,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 16:46:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:54,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 16:46:54,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 16:46:54,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:46:57,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:46:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148175290] [2023-12-16 16:46:57,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148175290] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 16:46:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1649649686] [2023-12-16 16:46:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:46:57,734 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 16:46:57,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 16:46:57,773 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 16:46:57,774 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 16:46:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:46:58,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:46:58,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:46:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 16:46:59,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:46:59,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1649649686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:46:59,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 16:46:59,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2023-12-16 16:46:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150244740] [2023-12-16 16:46:59,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:46:59,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:46:59,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:46:59,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:46:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:46:59,380 INFO L87 Difference]: Start difference. First operand 77 states and 103 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:47:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:01,100 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2023-12-16 16:47:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:47:01,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-12-16 16:47:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:01,114 INFO L225 Difference]: With dead ends: 89 [2023-12-16 16:47:01,114 INFO L226 Difference]: Without dead ends: 70 [2023-12-16 16:47:01,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:47:01,115 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:01,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 125 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 16:47:01,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-16 16:47:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-12-16 16:47:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 40 states have internal predecessors, (41), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-16 16:47:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2023-12-16 16:47:01,124 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 29 [2023-12-16 16:47:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:01,124 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2023-12-16 16:47:01,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:47:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2023-12-16 16:47:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 16:47:01,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:01,125 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 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] [2023-12-16 16:47:01,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:01,332 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 16:47:01,526 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 16:47:01,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:01,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:01,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2062512120, now seen corresponding path program 1 times [2023-12-16 16:47:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:01,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705159767] [2023-12-16 16:47:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:01,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:01,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:01,528 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 16:47:01,529 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 16:47:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:01,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 16:47:01,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 16:47:02,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 16:47:02,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705159767] [2023-12-16 16:47:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705159767] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:02,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:02,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2023-12-16 16:47:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742088375] [2023-12-16 16:47:02,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:02,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 16:47:02,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 16:47:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-16 16:47:02,836 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-16 16:47:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:04,573 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2023-12-16 16:47:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 16:47:04,577 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 54 [2023-12-16 16:47:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:04,577 INFO L225 Difference]: With dead ends: 82 [2023-12-16 16:47:04,577 INFO L226 Difference]: Without dead ends: 63 [2023-12-16 16:47:04,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:47:04,578 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:04,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 231 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 16:47:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-16 16:47:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2023-12-16 16:47:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 16:47:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2023-12-16 16:47:04,585 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 54 [2023-12-16 16:47:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:04,585 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2023-12-16 16:47:04,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-16 16:47:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2023-12-16 16:47:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 16:47:04,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:04,586 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 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] [2023-12-16 16:47:04,602 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 16:47:04,802 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 16:47:04,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:04,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:04,803 INFO L85 PathProgramCache]: Analyzing trace with hash -665291431, now seen corresponding path program 1 times [2023-12-16 16:47:04,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:04,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518847627] [2023-12-16 16:47:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:04,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:04,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:04,805 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 16:47:04,805 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 16:47:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:05,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 16:47:05,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-16 16:47:06,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-16 16:47:22,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518847627] [2023-12-16 16:47:22,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518847627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:22,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:22,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2023-12-16 16:47:22,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690111959] [2023-12-16 16:47:22,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:22,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 16:47:22,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:22,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 16:47:22,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-12-16 16:47:22,345 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-16 16:47:29,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:47:30,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:47:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:35,544 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2023-12-16 16:47:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 16:47:35,557 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 59 [2023-12-16 16:47:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:35,558 INFO L225 Difference]: With dead ends: 82 [2023-12-16 16:47:35,558 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 16:47:35,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2023-12-16 16:47:35,559 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:35,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 228 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-16 16:47:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 16:47:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2023-12-16 16:47:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 17 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 16:47:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2023-12-16 16:47:35,567 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 59 [2023-12-16 16:47:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:35,567 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2023-12-16 16:47:35,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-16 16:47:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2023-12-16 16:47:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 16:47:35,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:35,569 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 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] [2023-12-16 16:47:35,589 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 16:47:35,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:35,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:35,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:35,788 INFO L85 PathProgramCache]: Analyzing trace with hash -212420630, now seen corresponding path program 2 times [2023-12-16 16:47:35,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:35,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402407196] [2023-12-16 16:47:35,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:47:35,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:35,790 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:35,791 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 (11)] Waiting until timeout for monitored process [2023-12-16 16:47:36,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:47:36,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:47:36,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 16:47:36,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-16 16:47:37,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 16:47:38,089 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:47:38,099 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 (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:47:38,492 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:47:38,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:38,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:38,693 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 65 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. [2023-12-16 16:47:38,696 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:38,698 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:47:38,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:47:38 BoogieIcfgContainer [2023-12-16 16:47:38,713 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:47:38,713 INFO L158 Benchmark]: Toolchain (without parser) took 78105.15ms. Allocated memory is still 332.4MB. Free memory was 287.1MB in the beginning and 179.3MB in the end (delta: 107.8MB). Peak memory consumption was 107.8MB. Max. memory is 8.0GB. [2023-12-16 16:47:38,713 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 178.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:47:38,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.51ms. Allocated memory is still 332.4MB. Free memory was 286.6MB in the beginning and 274.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 16:47:38,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.98ms. Allocated memory is still 332.4MB. Free memory was 274.5MB in the beginning and 272.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:47:38,714 INFO L158 Benchmark]: Boogie Preprocessor took 37.68ms. Allocated memory is still 332.4MB. Free memory was 272.4MB in the beginning and 270.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:47:38,714 INFO L158 Benchmark]: RCFGBuilder took 299.38ms. Allocated memory is still 332.4MB. Free memory was 270.3MB in the beginning and 252.5MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 16:47:38,714 INFO L158 Benchmark]: TraceAbstraction took 77540.26ms. Allocated memory is still 332.4MB. Free memory was 252.0MB in the beginning and 179.3MB in the end (delta: 72.7MB). Peak memory consumption was 73.2MB. Max. memory is 8.0GB. [2023-12-16 16:47:38,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 178.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.51ms. Allocated memory is still 332.4MB. Free memory was 286.6MB in the beginning and 274.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.98ms. Allocated memory is still 332.4MB. Free memory was 274.5MB in the beginning and 272.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.68ms. Allocated memory is still 332.4MB. Free memory was 272.4MB in the beginning and 270.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 299.38ms. Allocated memory is still 332.4MB. Free memory was 270.3MB in the beginning and 252.5MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 77540.26ms. Allocated memory is still 332.4MB. Free memory was 252.0MB in the beginning and 179.3MB in the end (delta: 72.7MB). Peak memory consumption was 73.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 14]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 14). Cancelled while NwaCegarLoop was analyzing trace of length 65 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.5s, OverallIterations: 9, TraceHistogramMax: 9, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 39.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 199 SdHoareTripleChecker+Valid, 36.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 1583 SdHoareTripleChecker+Invalid, 32.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1290 mSDsCounter, 186 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1032 IncrementalHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 186 mSolverCounterUnsat, 293 mSDtfsCounter, 1032 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 489 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 23.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=5, InterpolantAutomatonStates: 66, 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, 8 MinimizatonAttempts, 33 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 32.0s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 467 ConstructedInterpolants, 0 QuantifiedInterpolants, 2637 SizeOfPredicates, 23 NumberOfNonLiveVariables, 509 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 402/450 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