/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-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w64_d16_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 02:50:53,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 02:50:53,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-26 02:50:53,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 02:50:53,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 02:50:53,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 02:50:53,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 02:50:53,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 02:50:53,262 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 02:50:53,263 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 02:50:53,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 02:50:53,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 02:50:53,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 02:50:53,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 02:50:53,274 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 02:50:53,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 02:50:53,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 02:50:53,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 02:50:53,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 02:50:53,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 02:50:53,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 02:50:53,278 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 02:50:53,279 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 02:50:53,279 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 02:50:53,279 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 02:50:53,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 02:50:53,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 02:50:53,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 02:50:53,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 02:50:53,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 02:50:53,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 02:50:53,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 02:50:53,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 02:50:53,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 02:50:53,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 02:50:53,281 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 02:50:53,282 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 02:50:53,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 02:50:53,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 02:50:53,282 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 02:50:53,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 02:50:53,286 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 02:50:53,286 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 02:50:53,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 02:50:53,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 02:50:53,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 02:50:53,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 02:50:53,485 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 02:50:53,485 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 02:50:53,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w64_d16_e0.c [2023-12-26 02:50:54,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 02:50:54,868 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 02:50:54,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w64_d16_e0.c [2023-12-26 02:50:54,886 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781ff5c6a/186b4b1bd2ff449e93bc775db00cd1c2/FLAG865bc0537 [2023-12-26 02:50:54,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781ff5c6a/186b4b1bd2ff449e93bc775db00cd1c2 [2023-12-26 02:50:54,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 02:50:54,899 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 02:50:54,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 02:50:54,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 02:50:54,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 02:50:54,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 02:50:54" (1/1) ... [2023-12-26 02:50:54,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a77b2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:54, skipping insertion in model container [2023-12-26 02:50:54,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 02:50:54" (1/1) ... [2023-12-26 02:50:54,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 02:50:55,093 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w64_d16_e0.c[1325,1338] [2023-12-26 02:50:55,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 02:50:55,323 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 02:50:55,331 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w64_d16_e0.c[1325,1338] [2023-12-26 02:50:55,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 02:50:55,538 INFO L206 MainTranslator]: Completed translation [2023-12-26 02:50:55,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55 WrapperNode [2023-12-26 02:50:55,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 02:50:55,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 02:50:55,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 02:50:55,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 02:50:55,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,659 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2177 [2023-12-26 02:50:55,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 02:50:55,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 02:50:55,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 02:50:55,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 02:50:55,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,724 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]. [2023-12-26 02:50:55,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 02:50:55,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 02:50:55,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 02:50:55,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 02:50:55,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (1/1) ... [2023-12-26 02:50:55,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 02:50:55,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 02:50:55,837 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) [2023-12-26 02:50:55,872 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 [2023-12-26 02:50:55,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 02:50:55,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 02:50:55,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-26 02:50:55,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-26 02:50:55,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 02:50:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 02:50:56,185 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 02:50:56,235 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 02:50:57,887 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 02:50:57,974 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 02:50:57,974 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 02:50:57,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 02:50:57 BoogieIcfgContainer [2023-12-26 02:50:57,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 02:50:57,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 02:50:57,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 02:50:57,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 02:50:57,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 02:50:54" (1/3) ... [2023-12-26 02:50:57,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e28303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 02:50:57, skipping insertion in model container [2023-12-26 02:50:57,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 02:50:55" (2/3) ... [2023-12-26 02:50:57,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e28303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 02:50:57, skipping insertion in model container [2023-12-26 02:50:57,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 02:50:57" (3/3) ... [2023-12-26 02:50:57,981 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n2_w64_d16_e0.c [2023-12-26 02:50:57,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 02:50:57,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 02:50:58,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 02:50:58,039 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;@135cb9a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 02:50:58,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 02:50:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-26 02:50:58,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-26 02:50:58,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 02:50:58,051 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-12-26 02:50:58,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 02:50:58,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 02:50:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash 871459935, now seen corresponding path program 1 times [2023-12-26 02:50:58,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 02:50:58,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630132148] [2023-12-26 02:50:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 02:50:58,069 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 [2023-12-26 02:50:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 02:50:58,074 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) [2023-12-26 02:50:58,080 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 [2023-12-26 02:50:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 02:50:59,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-26 02:50:59,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 02:51:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-26 02:51:00,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 02:51:00,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 02:51:00,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630132148] [2023-12-26 02:51:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630132148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 02:51:00,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 02:51:00,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-26 02:51:00,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510300602] [2023-12-26 02:51:00,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 02:51:00,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 02:51:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 02:51:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 02:51:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 02:51:00,273 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-26 02:51:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 02:51:00,761 INFO L93 Difference]: Finished difference Result 66 states and 109 transitions. [2023-12-26 02:51:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 02:51:00,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 46 [2023-12-26 02:51:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 02:51:00,768 INFO L225 Difference]: With dead ends: 66 [2023-12-26 02:51:00,768 INFO L226 Difference]: Without dead ends: 41 [2023-12-26 02:51:00,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-26 02:51:00,772 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-26 02:51:00,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 57 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-26 02:51:00,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-26 02:51:00,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-12-26 02:51:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-26 02:51:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2023-12-26 02:51:00,807 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 46 [2023-12-26 02:51:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 02:51:00,808 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2023-12-26 02:51:00,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-26 02:51:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2023-12-26 02:51:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-26 02:51:00,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 02:51:00,810 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 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] [2023-12-26 02:51:00,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-26 02:51:01,026 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 [2023-12-26 02:51:01,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 02:51:01,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 02:51:01,027 INFO L85 PathProgramCache]: Analyzing trace with hash 455665793, now seen corresponding path program 1 times [2023-12-26 02:51:01,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 02:51:01,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977168756] [2023-12-26 02:51:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 02:51:01,030 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 [2023-12-26 02:51:01,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 02:51:01,032 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) [2023-12-26 02:51:01,076 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 [2023-12-26 02:51:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 02:51:12,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-26 02:51:13,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 02:51:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-26 02:51:13,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 02:51:13,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 02:51:13,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977168756] [2023-12-26 02:51:13,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977168756] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 02:51:13,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [30712398] [2023-12-26 02:51:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 02:51:13,608 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 02:51:13,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 02:51:13,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 02:51:13,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-26 02:51:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 02:51:15,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-26 02:51:15,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 02:51:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-26 02:51:16,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 02:51:16,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [30712398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 02:51:16,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 02:51:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-12-26 02:51:16,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664453455] [2023-12-26 02:51:16,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 02:51:16,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-26 02:51:16,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 02:51:16,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-26 02:51:16,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-26 02:51:16,323 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-26 02:51:17,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 02:51:17,713 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2023-12-26 02:51:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-26 02:51:17,714 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 91 [2023-12-26 02:51:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 02:51:17,715 INFO L225 Difference]: With dead ends: 60 [2023-12-26 02:51:17,715 INFO L226 Difference]: Without dead ends: 58 [2023-12-26 02:51:17,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-12-26 02:51:17,716 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-26 02:51:17,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 111 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-26 02:51:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-26 02:51:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2023-12-26 02:51:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-26 02:51:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2023-12-26 02:51:17,726 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 91 [2023-12-26 02:51:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 02:51:17,726 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2023-12-26 02:51:17,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-26 02:51:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2023-12-26 02:51:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-26 02:51:17,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 02:51:17,728 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-26 02:51:17,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-26 02:51:17,989 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 [2023-12-26 02:51:18,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-26 02:51:18,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 02:51:18,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 02:51:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1949582433, now seen corresponding path program 2 times [2023-12-26 02:51:18,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 02:51:18,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36268975] [2023-12-26 02:51:18,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 02:51:18,155 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 [2023-12-26 02:51:18,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 02:51:18,156 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) [2023-12-26 02:51:18,167 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 [2023-12-26 02:51:44,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 02:51:44,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 02:51:44,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 4351 conjuncts, 213 conjunts are in the unsatisfiable core [2023-12-26 02:51:44,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 02:51:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2023-12-26 02:51:58,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 02:51:59,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 02:51:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36268975] [2023-12-26 02:51:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36268975] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 02:51:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2027238208] [2023-12-26 02:51:59,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 02:51:59,427 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 02:51:59,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 02:51:59,428 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 02:51:59,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-26 02:52:02,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 02:52:02,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 02:52:03,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 4351 conjuncts, 204 conjunts are in the unsatisfiable core [2023-12-26 02:52:03,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 02:53:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 132 proven. 121 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2023-12-26 02:53:58,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 02:53:58,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2027238208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 02:53:58,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 02:53:58,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 31 [2023-12-26 02:53:58,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769859018] [2023-12-26 02:53:58,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 02:53:58,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-26 02:53:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 02:53:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-26 02:53:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=961, Unknown=22, NotChecked=0, Total=1122 [2023-12-26 02:53:58,936 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 29 states have internal predecessors, (56), 19 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 13 states have call predecessors, (35), 19 states have call successors, (35) [2023-12-26 02:54:04,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 02:54:09,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 02:54:13,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 02:54:20,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 02:54:24,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 02:54:25,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 02:54:29,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 02:54:31,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 02:55:02,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 02:55:25,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2023-12-26 02:55:25,216 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-26 02:55:25,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 169.3s TimeCoverageRelationStatistics Valid=278, Invalid=1582, Unknown=32, NotChecked=0, Total=1892 [2023-12-26 02:55:25,218 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 27 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.2s IncrementalHoareTripleChecker+Time [2023-12-26 02:55:25,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 225 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 543 Invalid, 7 Unknown, 0 Unchecked, 36.2s Time] [2023-12-26 02:55:25,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-26 02:55:25,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-26 02:55:25,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-26 02:55:25,637 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-12-26 02:55:25,641 INFO L158 Benchmark]: Toolchain (without parser) took 270742.63ms. Allocated memory was 203.4MB in the beginning and 687.9MB in the end (delta: 484.4MB). Free memory was 162.5MB in the beginning and 389.5MB in the end (delta: -227.0MB). Peak memory consumption was 452.8MB. Max. memory is 8.0GB. [2023-12-26 02:55:25,641 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 203.4MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 02:55:25,642 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.84ms. Allocated memory was 203.4MB in the beginning and 266.3MB in the end (delta: 62.9MB). Free memory was 162.5MB in the beginning and 221.2MB in the end (delta: -58.7MB). Peak memory consumption was 79.0MB. Max. memory is 8.0GB. [2023-12-26 02:55:25,642 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.98ms. Allocated memory is still 266.3MB. Free memory was 221.2MB in the beginning and 206.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-26 02:55:25,642 INFO L158 Benchmark]: Boogie Preprocessor took 120.00ms. Allocated memory is still 266.3MB. Free memory was 206.0MB in the beginning and 188.2MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-26 02:55:25,642 INFO L158 Benchmark]: RCFGBuilder took 2193.46ms. Allocated memory was 266.3MB in the beginning and 397.4MB in the end (delta: 131.1MB). Free memory was 188.2MB in the beginning and 315.9MB in the end (delta: -127.7MB). Peak memory consumption was 115.7MB. Max. memory is 8.0GB. [2023-12-26 02:55:25,643 INFO L158 Benchmark]: TraceAbstraction took 267664.56ms. Allocated memory was 397.4MB in the beginning and 687.9MB in the end (delta: 290.5MB). Free memory was 315.4MB in the beginning and 389.5MB in the end (delta: -74.1MB). Peak memory consumption was 410.3MB. Max. memory is 8.0GB. [2023-12-26 02:55:25,644 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 203.4MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 640.84ms. Allocated memory was 203.4MB in the beginning and 266.3MB in the end (delta: 62.9MB). Free memory was 162.5MB in the beginning and 221.2MB in the end (delta: -58.7MB). Peak memory consumption was 79.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 118.98ms. Allocated memory is still 266.3MB. Free memory was 221.2MB in the beginning and 206.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 120.00ms. Allocated memory is still 266.3MB. Free memory was 206.0MB in the beginning and 188.2MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * RCFGBuilder took 2193.46ms. Allocated memory was 266.3MB in the beginning and 397.4MB in the end (delta: 131.1MB). Free memory was 188.2MB in the beginning and 315.9MB in the end (delta: -127.7MB). Peak memory consumption was 115.7MB. Max. memory is 8.0GB. * TraceAbstraction took 267664.56ms. Allocated memory was 397.4MB in the beginning and 687.9MB in the end (delta: 290.5MB). Free memory was 315.4MB in the beginning and 389.5MB in the end (delta: -74.1MB). Peak memory consumption was 410.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...