/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/eca-rers2012/Problem11_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 09:09:05,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 09:09:05,588 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 09:09:05,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 09:09:05,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 09:09:05,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 09:09:05,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 09:09:05,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 09:09:05,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 09:09:05,625 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 09:09:05,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 09:09:05,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 09:09:05,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 09:09:05,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 09:09:05,627 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 09:09:05,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 09:09:05,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 09:09:05,628 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 09:09:05,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 09:09:05,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 09:09:05,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 09:09:05,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 09:09:05,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 09:09:05,629 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 09:09:05,629 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 09:09:05,629 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 09:09:05,630 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 09:09:05,630 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 09:09:05,630 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 09:09:05,630 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 09:09:05,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 09:09:05,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 09:09:05,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 09:09:05,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 09:09:05,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:09:05,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 09:09:05,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 09:09:05,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 09:09:05,632 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 09:09:05,632 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 09:09:05,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 09:09:05,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 09:09:05,632 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 09:09:05,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 09:09:05,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 09:09:05,633 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 09:09:05,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 09:09:05,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 09:09:05,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 09:09:05,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 09:09:05,832 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 09:09:05,840 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 09:09:05,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2023-12-16 09:09:06,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 09:09:07,131 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 09:09:07,134 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2023-12-16 09:09:07,148 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/998ef00a5/2884f324d96a440595d7a6c45a238f66/FLAG9f4b2ae21 [2023-12-16 09:09:07,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/998ef00a5/2884f324d96a440595d7a6c45a238f66 [2023-12-16 09:09:07,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 09:09:07,165 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 09:09:07,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 09:09:07,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 09:09:07,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 09:09:07,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5411fcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07, skipping insertion in model container [2023-12-16 09:09:07,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 09:09:07,391 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label37.c[7136,7149] [2023-12-16 09:09:07,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:09:07,609 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 09:09:07,628 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label37.c[7136,7149] [2023-12-16 09:09:07,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:09:07,735 INFO L206 MainTranslator]: Completed translation [2023-12-16 09:09:07,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07 WrapperNode [2023-12-16 09:09:07,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 09:09:07,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 09:09:07,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 09:09:07,737 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 09:09:07,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,842 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 998 [2023-12-16 09:09:07,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 09:09:07,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 09:09:07,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 09:09:07,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 09:09:07,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,861 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,879 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 09:09:07,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 09:09:07,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 09:09:07,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 09:09:07,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 09:09:07,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (1/1) ... [2023-12-16 09:09:07,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:09:07,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 09:09:07,984 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 09:09:07,994 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 09:09:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 09:09:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 09:09:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 09:09:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 09:09:08,051 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 09:09:08,053 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 09:09:14,815 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 09:09:14,845 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 09:09:14,846 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 09:09:14,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:09:14 BoogieIcfgContainer [2023-12-16 09:09:14,846 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 09:09:14,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 09:09:14,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 09:09:14,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 09:09:14,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:09:07" (1/3) ... [2023-12-16 09:09:14,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658ff9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:09:14, skipping insertion in model container [2023-12-16 09:09:14,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:09:07" (2/3) ... [2023-12-16 09:09:14,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658ff9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:09:14, skipping insertion in model container [2023-12-16 09:09:14,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:09:14" (3/3) ... [2023-12-16 09:09:14,852 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label37.c [2023-12-16 09:09:14,863 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 09:09:14,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 09:09:14,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 09:09:14,915 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;@63c6b71a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 09:09:14,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 09:09:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:14,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-16 09:09:14,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:09:14,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:09:14,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:09:14,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:09:14,937 INFO L85 PathProgramCache]: Analyzing trace with hash -479020460, now seen corresponding path program 1 times [2023-12-16 09:09:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:09:14,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689996283] [2023-12-16 09:09:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:09:14,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:09:14,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:09:14,980 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 09:09:15,013 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 09:09:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:09:15,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 09:09:15,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:09:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:09:15,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:09:15,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:09:15,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689996283] [2023-12-16 09:09:15,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689996283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:09:15,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:09:15,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:09:15,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878902875] [2023-12-16 09:09:15,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:09:15,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 09:09:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:09:15,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 09:09:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:09:15,147 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:15,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:09:15,198 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2023-12-16 09:09:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 09:09:15,204 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-16 09:09:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:09:15,210 INFO L225 Difference]: With dead ends: 441 [2023-12-16 09:09:15,210 INFO L226 Difference]: Without dead ends: 219 [2023-12-16 09:09:15,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 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 09:09:15,215 INFO L413 NwaCegarLoop]: 355 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, 355 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 09:09:15,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:09:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-16 09:09:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-16 09:09:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2023-12-16 09:09:15,266 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 48 [2023-12-16 09:09:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:09:15,267 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2023-12-16 09:09:15,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2023-12-16 09:09:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-16 09:09:15,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:09:15,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:09:15,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 09:09:15,471 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 09:09:15,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:09:15,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:09:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash -56292362, now seen corresponding path program 1 times [2023-12-16 09:09:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:09:15,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804379716] [2023-12-16 09:09:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:09:15,473 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 09:09:15,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:09:15,475 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 09:09:15,497 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 (3)] Waiting until timeout for monitored process [2023-12-16 09:09:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:09:15,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:09:15,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:09:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:09:15,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:09:15,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:09:15,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804379716] [2023-12-16 09:09:15,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804379716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:09:15,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:09:15,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:09:15,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905041028] [2023-12-16 09:09:15,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:09:15,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:09:15,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:09:15,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:09:15,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:15,663 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:09:23,408 INFO L93 Difference]: Finished difference Result 634 states and 1036 transitions. [2023-12-16 09:09:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:09:23,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-16 09:09:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:09:23,420 INFO L225 Difference]: With dead ends: 634 [2023-12-16 09:09:23,420 INFO L226 Difference]: Without dead ends: 416 [2023-12-16 09:09:23,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:23,421 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 153 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-16 09:09:23,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 137 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-16 09:09:23,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-12-16 09:09:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 407. [2023-12-16 09:09:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4852216748768472) internal successors, (603), 406 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 603 transitions. [2023-12-16 09:09:23,438 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 603 transitions. Word has length 48 [2023-12-16 09:09:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:09:23,439 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 603 transitions. [2023-12-16 09:09:23,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 603 transitions. [2023-12-16 09:09:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 09:09:23,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:09:23,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-12-16 09:09:23,448 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 09:09:23,648 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 09:09:23,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:09:23,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:09:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1746329032, now seen corresponding path program 1 times [2023-12-16 09:09:23,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:09:23,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702799890] [2023-12-16 09:09:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:09:23,651 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 09:09:23,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:09:23,654 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 09:09:23,655 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 09:09:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:09:23,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:09:23,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:09:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:09:23,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:09:23,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:09:23,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702799890] [2023-12-16 09:09:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702799890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:09:23,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:09:23,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:09:23,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193491601] [2023-12-16 09:09:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:09:23,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:09:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:09:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:09:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:23,865 INFO L87 Difference]: Start difference. First operand 407 states and 603 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:31,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:09:31,771 INFO L93 Difference]: Finished difference Result 1189 states and 1768 transitions. [2023-12-16 09:09:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:09:31,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-16 09:09:31,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:09:31,781 INFO L225 Difference]: With dead ends: 1189 [2023-12-16 09:09:31,781 INFO L226 Difference]: Without dead ends: 783 [2023-12-16 09:09:31,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:31,783 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 138 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-16 09:09:31,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 169 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-16 09:09:31,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-12-16 09:09:31,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 780. [2023-12-16 09:09:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 1.3478818998716302) internal successors, (1050), 779 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:31,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1050 transitions. [2023-12-16 09:09:31,808 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1050 transitions. Word has length 114 [2023-12-16 09:09:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:09:31,808 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1050 transitions. [2023-12-16 09:09:31,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1050 transitions. [2023-12-16 09:09:31,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 09:09:31,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:09:31,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:09:31,813 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 09:09:32,013 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 09:09:32,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:09:32,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:09:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1663946520, now seen corresponding path program 1 times [2023-12-16 09:09:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:09:32,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419246367] [2023-12-16 09:09:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:09:32,016 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 09:09:32,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:09:32,017 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 09:09:32,056 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 09:09:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:09:32,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:09:32,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:09:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:09:32,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:09:32,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:09:32,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419246367] [2023-12-16 09:09:32,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419246367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:09:32,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:09:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:09:32,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123115146] [2023-12-16 09:09:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:09:32,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:09:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:09:32,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:09:32,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:32,300 INFO L87 Difference]: Start difference. First operand 780 states and 1050 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:39,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:09:39,458 INFO L93 Difference]: Finished difference Result 1928 states and 2650 transitions. [2023-12-16 09:09:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:09:39,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-16 09:09:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:09:39,469 INFO L225 Difference]: With dead ends: 1928 [2023-12-16 09:09:39,470 INFO L226 Difference]: Without dead ends: 1149 [2023-12-16 09:09:39,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:39,471 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-16 09:09:39,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 152 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-16 09:09:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2023-12-16 09:09:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2023-12-16 09:09:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 1.2569686411149825) internal successors, (1443), 1148 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1443 transitions. [2023-12-16 09:09:39,504 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1443 transitions. Word has length 119 [2023-12-16 09:09:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:09:39,505 INFO L495 AbstractCegarLoop]: Abstraction has 1149 states and 1443 transitions. [2023-12-16 09:09:39,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1443 transitions. [2023-12-16 09:09:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 09:09:39,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:09:39,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:09:39,518 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 (5)] Ended with exit code 0 [2023-12-16 09:09:39,713 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 09:09:39,714 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:09:39,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:09:39,715 INFO L85 PathProgramCache]: Analyzing trace with hash 934394696, now seen corresponding path program 1 times [2023-12-16 09:09:39,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:09:39,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931365825] [2023-12-16 09:09:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:09:39,717 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 09:09:39,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:09:39,718 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 09:09:39,743 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 09:09:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:09:39,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:09:39,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:09:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:09:39,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:09:39,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:09:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931365825] [2023-12-16 09:09:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931365825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:09:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:09:39,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:09:39,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705185207] [2023-12-16 09:09:39,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:09:39,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:09:39,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:09:39,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:09:39,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:39,910 INFO L87 Difference]: Start difference. First operand 1149 states and 1443 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:47,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:09:47,570 INFO L93 Difference]: Finished difference Result 1947 states and 2631 transitions. [2023-12-16 09:09:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:09:47,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2023-12-16 09:09:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:09:47,583 INFO L225 Difference]: With dead ends: 1947 [2023-12-16 09:09:47,583 INFO L226 Difference]: Without dead ends: 1541 [2023-12-16 09:09:47,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:47,584 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 186 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-16 09:09:47,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 319 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-16 09:09:47,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-12-16 09:09:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1538. [2023-12-16 09:09:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.2713077423552375) internal successors, (1954), 1537 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1954 transitions. [2023-12-16 09:09:47,603 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1954 transitions. Word has length 175 [2023-12-16 09:09:47,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:09:47,603 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 1954 transitions. [2023-12-16 09:09:47,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1954 transitions. [2023-12-16 09:09:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-16 09:09:47,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:09:47,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:09:47,612 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 09:09:47,808 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 09:09:47,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:09:47,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:09:47,809 INFO L85 PathProgramCache]: Analyzing trace with hash -367629248, now seen corresponding path program 1 times [2023-12-16 09:09:47,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:09:47,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620358866] [2023-12-16 09:09:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:09:47,811 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 09:09:47,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:09:47,812 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 09:09:47,813 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 09:09:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:09:47,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:09:47,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:09:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:09:48,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:09:48,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:09:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620358866] [2023-12-16 09:09:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620358866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:09:48,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:09:48,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:09:48,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131323985] [2023-12-16 09:09:48,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:09:48,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:09:48,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:09:48,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:09:48,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:48,037 INFO L87 Difference]: Start difference. First operand 1538 states and 1954 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:09:54,942 INFO L93 Difference]: Finished difference Result 3278 states and 4344 transitions. [2023-12-16 09:09:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:09:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2023-12-16 09:09:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:09:54,955 INFO L225 Difference]: With dead ends: 3278 [2023-12-16 09:09:54,955 INFO L226 Difference]: Without dead ends: 2109 [2023-12-16 09:09:54,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:09:54,957 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 137 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-16 09:09:54,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 336 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-16 09:09:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2023-12-16 09:09:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2096. [2023-12-16 09:09:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 2095 states have (on average 1.2539379474940333) internal successors, (2627), 2095 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2627 transitions. [2023-12-16 09:09:54,980 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2627 transitions. Word has length 228 [2023-12-16 09:09:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:09:54,981 INFO L495 AbstractCegarLoop]: Abstraction has 2096 states and 2627 transitions. [2023-12-16 09:09:54,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:09:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2627 transitions. [2023-12-16 09:09:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-16 09:09:54,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:09:54,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:09:55,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-16 09:09:55,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:09:55,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:09:55,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:09:55,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1836815392, now seen corresponding path program 1 times [2023-12-16 09:09:55,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:09:55,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992550203] [2023-12-16 09:09:55,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:09:55,189 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 09:09:55,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:09:55,191 INFO L229 MonitoredProcess]: Starting monitored process 8 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 09:09:55,196 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 (8)] Waiting until timeout for monitored process [2023-12-16 09:09:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:09:55,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 09:09:55,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:09:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:09:56,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 09:09:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:09:57,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:09:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992550203] [2023-12-16 09:09:57,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992550203] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 09:09:57,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 09:09:57,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 09:09:57,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535086494] [2023-12-16 09:09:57,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:09:57,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:09:57,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:09:57,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:09:57,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:09:57,553 INFO L87 Difference]: Start difference. First operand 2096 states and 2627 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:10:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:10:10,989 INFO L93 Difference]: Finished difference Result 4187 states and 5465 transitions. [2023-12-16 09:10:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:10:10,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2023-12-16 09:10:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:10:11,003 INFO L225 Difference]: With dead ends: 4187 [2023-12-16 09:10:11,003 INFO L226 Difference]: Without dead ends: 3018 [2023-12-16 09:10:11,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:10:11,005 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 147 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-16 09:10:11,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 49 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-12-16 09:10:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2023-12-16 09:10:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 3018. [2023-12-16 09:10:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3017 states have (on average 1.269804441498177) internal successors, (3831), 3017 states have internal predecessors, (3831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:10:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3831 transitions. [2023-12-16 09:10:11,038 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3831 transitions. Word has length 229 [2023-12-16 09:10:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:10:11,038 INFO L495 AbstractCegarLoop]: Abstraction has 3018 states and 3831 transitions. [2023-12-16 09:10:11,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:10:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3831 transitions. [2023-12-16 09:10:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-16 09:10:11,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:10:11,041 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2023-12-16 09:10:11,047 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 (8)] Forceful destruction successful, exit code 0 [2023-12-16 09:10:11,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 09:10:11,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:10:11,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:10:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash 743347718, now seen corresponding path program 1 times [2023-12-16 09:10:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:10:11,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321385891] [2023-12-16 09:10:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:10:11,248 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 09:10:11,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:10:11,250 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 09:10:11,251 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 09:10:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:10:11,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 09:10:11,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:10:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 93 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:10:12,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 09:10:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 172 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:10:15,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:10:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321385891] [2023-12-16 09:10:15,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321385891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 09:10:15,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 09:10:15,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 09:10:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268267558] [2023-12-16 09:10:15,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 09:10:15,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 09:10:15,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:10:15,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 09:10:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 09:10:15,483 INFO L87 Difference]: Start difference. First operand 3018 states and 3831 transitions. Second operand has 7 states, 7 states have (on average 64.14285714285714) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 09:10:18,874 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 09:10:18,874 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 09:10:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 09:10:18,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-16 09:10:18,897 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 208 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-16 09:10:18,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 37 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-16 09:10:18,898 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 09:10:18,906 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 09:10:19,103 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 09:10:19,105 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (3018states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (970 states constructed, input type IntersectNwa). [2023-12-16 09:10:19,108 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:10:19,110 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 09:10:19,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:10:19 BoogieIcfgContainer [2023-12-16 09:10:19,111 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 09:10:19,112 INFO L158 Benchmark]: Toolchain (without parser) took 71947.02ms. Allocated memory was 230.7MB in the beginning and 482.3MB in the end (delta: 251.7MB). Free memory was 160.5MB in the beginning and 336.5MB in the end (delta: -175.9MB). Peak memory consumption was 76.6MB. Max. memory is 8.0GB. [2023-12-16 09:10:19,112 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 230.7MB. Free memory is still 177.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 09:10:19,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.51ms. Allocated memory was 230.7MB in the beginning and 341.8MB in the end (delta: 111.1MB). Free memory was 160.3MB in the beginning and 274.6MB in the end (delta: -114.3MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-16 09:10:19,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.95ms. Allocated memory is still 341.8MB. Free memory was 274.6MB in the beginning and 265.7MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 09:10:19,112 INFO L158 Benchmark]: Boogie Preprocessor took 103.12ms. Allocated memory is still 341.8MB. Free memory was 265.7MB in the beginning and 255.8MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 09:10:19,112 INFO L158 Benchmark]: RCFGBuilder took 6899.01ms. Allocated memory is still 341.8MB. Free memory was 255.8MB in the beginning and 159.8MB in the end (delta: 95.9MB). Peak memory consumption was 95.9MB. Max. memory is 8.0GB. [2023-12-16 09:10:19,113 INFO L158 Benchmark]: TraceAbstraction took 64263.99ms. Allocated memory was 341.8MB in the beginning and 482.3MB in the end (delta: 140.5MB). Free memory was 159.3MB in the beginning and 336.5MB in the end (delta: -177.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 09:10:19,114 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 230.7MB. Free memory is still 177.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 569.51ms. Allocated memory was 230.7MB in the beginning and 341.8MB in the end (delta: 111.1MB). Free memory was 160.3MB in the beginning and 274.6MB in the end (delta: -114.3MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 105.95ms. Allocated memory is still 341.8MB. Free memory was 274.6MB in the beginning and 265.7MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 103.12ms. Allocated memory is still 341.8MB. Free memory was 265.7MB in the beginning and 255.8MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 6899.01ms. Allocated memory is still 341.8MB. Free memory was 255.8MB in the beginning and 159.8MB in the end (delta: 95.9MB). Peak memory consumption was 95.9MB. Max. memory is 8.0GB. * TraceAbstraction took 64263.99ms. Allocated memory was 341.8MB in the beginning and 482.3MB in the end (delta: 140.5MB). Free memory was 159.3MB in the beginning and 336.5MB in the end (delta: -177.2MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 163). Cancelled while NwaCegarLoop was constructing difference of abstraction (3018states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (970 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.2s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 54.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1117 SdHoareTripleChecker+Valid, 53.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1117 mSDsluCounter, 1554 SdHoareTripleChecker+Invalid, 46.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 155 mSDsCounter, 660 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4542 IncrementalHoareTripleChecker+Invalid, 5202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 660 mSolverCounterUnsat, 1399 mSDtfsCounter, 4542 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1698 GetRequests, 1681 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3018occurred in iteration=7, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 28 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 1218 NumberOfCodeBlocks, 1218 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1694 ConstructedInterpolants, 0 QuantifiedInterpolants, 11760 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1580 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 817/998 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