/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_n4_w16_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 03:13:01,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 03:13:01,298 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 03:13:01,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 03:13:01,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 03:13:01,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 03:13:01,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 03:13:01,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 03:13:01,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 03:13:01,335 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 03:13:01,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 03:13:01,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 03:13:01,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 03:13:01,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 03:13:01,337 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 03:13:01,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 03:13:01,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 03:13:01,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 03:13:01,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 03:13:01,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 03:13:01,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 03:13:01,339 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 03:13:01,339 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 03:13:01,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 03:13:01,340 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 03:13:01,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 03:13:01,340 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 03:13:01,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 03:13:01,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 03:13:01,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 03:13:01,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 03:13:01,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 03:13:01,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 03:13:01,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 03:13:01,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 03:13:01,342 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 03:13:01,342 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 03:13:01,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 03:13:01,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 03:13:01,342 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 03:13:01,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 03:13:01,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 03:13:01,343 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 03:13:01,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 03:13:01,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 03:13:01,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 03:13:01,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 03:13:01,541 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 03:13:01,543 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 03:13:01,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c [2023-12-26 03:13:02,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 03:13:02,775 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 03:13:02,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c [2023-12-26 03:13:02,799 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5613f7d/7bdff116de4a4b628293b5a9c49315a6/FLAG1cd549bf4 [2023-12-26 03:13:02,812 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5613f7d/7bdff116de4a4b628293b5a9c49315a6 [2023-12-26 03:13:02,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 03:13:02,815 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 03:13:02,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 03:13:02,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 03:13:02,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 03:13:02,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:13:02" (1/1) ... [2023-12-26 03:13:02,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfc8670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:02, skipping insertion in model container [2023-12-26 03:13:02,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:13:02" (1/1) ... [2023-12-26 03:13:02,891 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 03:13:03,062 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_n4_w16_d32_e0.c[1271,1284] [2023-12-26 03:13:03,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 03:13:03,577 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 03:13:03,584 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_n4_w16_d32_e0.c[1271,1284] [2023-12-26 03:13:03,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 03:13:03,750 INFO L206 MainTranslator]: Completed translation [2023-12-26 03:13:03,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03 WrapperNode [2023-12-26 03:13:03,750 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 03:13:03,751 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 03:13:03,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 03:13:03,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 03:13:03,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:03,827 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:03,942 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5070 [2023-12-26 03:13:03,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 03:13:03,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 03:13:03,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 03:13:03,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 03:13:03,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:03,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:03,980 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:04,085 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 03:13:04,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:04,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:04,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:04,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:04,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:04,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:04,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 03:13:04,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 03:13:04,232 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 03:13:04,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 03:13:04,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (1/1) ... [2023-12-26 03:13:04,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 03:13:04,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 03:13:04,278 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 03:13:04,295 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 03:13:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 03:13:04,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 03:13:04,306 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-26 03:13:04,306 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-26 03:13:04,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 03:13:04,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 03:13:04,869 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 03:13:04,871 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 03:13:09,528 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 03:13:09,730 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 03:13:09,730 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 03:13:09,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:13:09 BoogieIcfgContainer [2023-12-26 03:13:09,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 03:13:09,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 03:13:09,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 03:13:09,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 03:13:09,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 03:13:02" (1/3) ... [2023-12-26 03:13:09,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269bb0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:13:09, skipping insertion in model container [2023-12-26 03:13:09,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:13:03" (2/3) ... [2023-12-26 03:13:09,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269bb0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:13:09, skipping insertion in model container [2023-12-26 03:13:09,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:13:09" (3/3) ... [2023-12-26 03:13:09,737 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c [2023-12-26 03:13:09,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 03:13:09,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 03:13:09,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 03:13:09,791 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;@6cac8119, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 03:13:09,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 03:13:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-26 03:13:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-26 03:13:09,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:13:09,805 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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] [2023-12-26 03:13:09,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:13:09,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:13:09,810 INFO L85 PathProgramCache]: Analyzing trace with hash 465018047, now seen corresponding path program 1 times [2023-12-26 03:13:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:13:09,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533009253] [2023-12-26 03:13:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:13:09,825 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 03:13:09,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:13:09,827 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 03:13:09,836 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 03:13:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:13:10,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-26 03:13:11,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:13:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-26 03:13:11,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 03:13:11,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:13:11,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533009253] [2023-12-26 03:13:11,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533009253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 03:13:11,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 03:13:11,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-26 03:13:11,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145566890] [2023-12-26 03:13:11,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 03:13:11,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-26 03:13:11,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:13:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-26 03:13:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 03:13:11,064 INFO L87 Difference]: Start difference. First operand has 38 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-26 03:13:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:13:11,124 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2023-12-26 03:13:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-26 03:13:11,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-12-26 03:13:11,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:13:11,138 INFO L225 Difference]: With dead ends: 73 [2023-12-26 03:13:11,138 INFO L226 Difference]: Without dead ends: 36 [2023-12-26 03:13:11,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 03:13:11,143 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-26 03:13:11,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-26 03:13:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-26 03:13:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-26 03:13:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-26 03:13:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2023-12-26 03:13:11,169 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 82 [2023-12-26 03:13:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:13:11,169 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2023-12-26 03:13:11,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-26 03:13:11,169 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2023-12-26 03:13:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-26 03:13:11,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:13:11,172 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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] [2023-12-26 03:13:11,200 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 [2023-12-26 03:13:11,385 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 03:13:11,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:13:11,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:13:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1729667557, now seen corresponding path program 1 times [2023-12-26 03:13:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:13:11,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123497711] [2023-12-26 03:13:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:13:11,388 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 03:13:11,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:13:11,389 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 03:13:11,423 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 03:13:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:13:14,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-26 03:13:14,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:13:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-26 03:13:15,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 03:13:15,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:13:15,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123497711] [2023-12-26 03:13:15,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123497711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 03:13:15,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 03:13:15,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-26 03:13:15,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666347860] [2023-12-26 03:13:15,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 03:13:15,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 03:13:15,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:13:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 03:13:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 03:13:15,039 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-26 03:13:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:13:15,759 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2023-12-26 03:13:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 03:13:15,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 82 [2023-12-26 03:13:15,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:13:15,761 INFO L225 Difference]: With dead ends: 67 [2023-12-26 03:13:15,761 INFO L226 Difference]: Without dead ends: 65 [2023-12-26 03:13:15,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 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 03:13:15,762 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-26 03:13:15,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 93 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-26 03:13:15,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-26 03:13:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2023-12-26 03:13:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-26 03:13:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2023-12-26 03:13:15,772 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 82 [2023-12-26 03:13:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:13:15,773 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2023-12-26 03:13:15,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-26 03:13:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2023-12-26 03:13:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-26 03:13:15,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:13:15,775 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 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] [2023-12-26 03:13:15,788 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 03:13:15,988 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 [2023-12-26 03:13:15,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:13:15,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:13:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1215904089, now seen corresponding path program 1 times [2023-12-26 03:13:15,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:13:15,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959872679] [2023-12-26 03:13:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:13:15,993 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 03:13:15,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:13:15,994 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) [2023-12-26 03:13:16,001 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 [2023-12-26 03:13:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:13:51,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 6016 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-26 03:13:51,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:13:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-26 03:13:52,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:13:52,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:13:52,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959872679] [2023-12-26 03:13:52,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959872679] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:13:52,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [565149124] [2023-12-26 03:13:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 03:13:52,370 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 03:13:52,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 03:13:52,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 03:13:52,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-26 03:13:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 03:13:57,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 6016 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-26 03:13:57,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:13:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-26 03:13:57,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:13:57,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [565149124] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:13:57,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 03:13:57,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-26 03:13:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037261700] [2023-12-26 03:13:57,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 03:13:57,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-26 03:13:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:13:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-26 03:13:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-26 03:13:57,895 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) [2023-12-26 03:14:00,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 03:14:00,926 INFO L93 Difference]: Finished difference Result 96 states and 134 transitions. [2023-12-26 03:14:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-26 03:14:00,926 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) Word has length 163 [2023-12-26 03:14:00,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 03:14:00,928 INFO L225 Difference]: With dead ends: 96 [2023-12-26 03:14:00,928 INFO L226 Difference]: Without dead ends: 94 [2023-12-26 03:14:00,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-12-26 03:14:00,929 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 31 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-26 03:14:00,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 243 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-26 03:14:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-26 03:14:00,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2023-12-26 03:14:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-26 03:14:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2023-12-26 03:14:00,940 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 163 [2023-12-26 03:14:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 03:14:00,941 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2023-12-26 03:14:00,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) [2023-12-26 03:14:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2023-12-26 03:14:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-26 03:14:00,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 03:14:00,944 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 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, 1, 1, 1] [2023-12-26 03:14:00,985 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 [2023-12-26 03:14:01,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-26 03:14:01,360 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-26 03:14:01,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 03:14:01,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 03:14:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash 555063397, now seen corresponding path program 2 times [2023-12-26 03:14:01,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 03:14:01,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720016523] [2023-12-26 03:14:01,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 03:14:01,368 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 03:14:01,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 03:14:01,369 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) [2023-12-26 03:14:01,405 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 [2023-12-26 03:15:47,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 03:15:47,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 03:15:47,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 10179 conjuncts, 215 conjunts are in the unsatisfiable core [2023-12-26 03:15:47,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:16:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 315 proven. 280 refuted. 0 times theorem prover too weak. 2454 trivial. 0 not checked. [2023-12-26 03:16:00,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:16:01,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 03:16:01,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720016523] [2023-12-26 03:16:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720016523] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:16:01,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [29950980] [2023-12-26 03:16:01,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 03:16:01,462 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 03:16:01,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 03:16:01,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 03:16:01,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-26 03:16:08,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 03:16:08,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 03:16:09,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 10179 conjuncts, 204 conjunts are in the unsatisfiable core [2023-12-26 03:16:09,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 03:17:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 264 proven. 241 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked. [2023-12-26 03:17:32,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 03:17:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [29950980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 03:17:33,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 03:17:33,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 31 [2023-12-26 03:17:33,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902282322] [2023-12-26 03:17:33,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 03:17:33,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-26 03:17:33,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 03:17:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-26 03:17:33,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=967, Unknown=16, NotChecked=0, Total=1122 [2023-12-26 03:17:33,583 INFO L87 Difference]: Start difference. First operand 93 states and 131 transitions. Second operand has 31 states, 23 states have (on average 3.739130434782609) internal successors, (86), 29 states have internal predecessors, (86), 19 states have call successors, (65), 1 states have call predecessors, (65), 2 states have return successors, (65), 13 states have call predecessors, (65), 19 states have call successors, (65) [2023-12-26 03:17:40,495 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 03:17:44,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:17:49,382 WARN L539 Checker$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 03:17:55,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:18:00,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:18:01,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:18:03,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:18:07,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:18:20,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:18:34,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:18:39,786 WARN L539 Checker$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 03:18:44,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:18:46,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:18:50,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:19:21,696 WARN L539 Checker$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 03:19:26,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:19:30,846 WARN L539 Checker$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 03:19:33,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 03:19:37,240 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 03:19:37,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 133.9s TimeCoverageRelationStatistics Valid=304, Invalid=1650, Unknown=26, NotChecked=0, Total=1980 [2023-12-26 03:19:37,242 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 57 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 51 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.4s IncrementalHoareTripleChecker+Time [2023-12-26 03:19:37,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 520 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1069 Invalid, 12 Unknown, 0 Unchecked, 71.4s Time] [2023-12-26 03:19:37,242 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 03:19:37,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-26 03:19:37,515 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 (6)] Forceful destruction successful, exit code 0 [2023-12-26 03:19:37,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-26 03:19:37,644 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: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) 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 03:19:37,647 INFO L158 Benchmark]: Toolchain (without parser) took 394832.42ms. Allocated memory was 216.0MB in the beginning and 1.2GB in the end (delta: 979.4MB). Free memory was 154.4MB in the beginning and 668.2MB in the end (delta: -513.8MB). Peak memory consumption was 466.1MB. Max. memory is 8.0GB. [2023-12-26 03:19:37,648 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 216.0MB. Free memory is still 164.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 03:19:37,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 933.43ms. Allocated memory was 216.0MB in the beginning and 261.1MB in the end (delta: 45.1MB). Free memory was 154.4MB in the beginning and 193.2MB in the end (delta: -38.8MB). Peak memory consumption was 105.7MB. Max. memory is 8.0GB. [2023-12-26 03:19:37,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 191.80ms. Allocated memory is still 261.1MB. Free memory was 193.2MB in the beginning and 157.1MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-26 03:19:37,648 INFO L158 Benchmark]: Boogie Preprocessor took 287.90ms. Allocated memory is still 261.1MB. Free memory was 157.1MB in the beginning and 145.5MB in the end (delta: 11.5MB). Peak memory consumption was 27.8MB. Max. memory is 8.0GB. [2023-12-26 03:19:37,649 INFO L158 Benchmark]: RCFGBuilder took 5499.18ms. Allocated memory was 261.1MB in the beginning and 667.9MB in the end (delta: 406.8MB). Free memory was 145.5MB in the beginning and 536.4MB in the end (delta: -390.9MB). Peak memory consumption was 385.6MB. Max. memory is 8.0GB. [2023-12-26 03:19:37,649 INFO L158 Benchmark]: TraceAbstraction took 387914.64ms. Allocated memory was 667.9MB in the beginning and 1.2GB in the end (delta: 527.4MB). Free memory was 535.9MB in the beginning and 668.2MB in the end (delta: -132.3MB). Peak memory consumption was 396.9MB. Max. memory is 8.0GB. [2023-12-26 03:19:37,650 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 216.0MB. Free memory is still 164.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 933.43ms. Allocated memory was 216.0MB in the beginning and 261.1MB in the end (delta: 45.1MB). Free memory was 154.4MB in the beginning and 193.2MB in the end (delta: -38.8MB). Peak memory consumption was 105.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 191.80ms. Allocated memory is still 261.1MB. Free memory was 193.2MB in the beginning and 157.1MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 287.90ms. Allocated memory is still 261.1MB. Free memory was 157.1MB in the beginning and 145.5MB in the end (delta: 11.5MB). Peak memory consumption was 27.8MB. Max. memory is 8.0GB. * RCFGBuilder took 5499.18ms. Allocated memory was 261.1MB in the beginning and 667.9MB in the end (delta: 406.8MB). Free memory was 145.5MB in the beginning and 536.4MB in the end (delta: -390.9MB). Peak memory consumption was 385.6MB. Max. memory is 8.0GB. * TraceAbstraction took 387914.64ms. Allocated memory was 667.9MB in the beginning and 1.2GB in the end (delta: 527.4MB). Free memory was 535.9MB in the beginning and 668.2MB in the end (delta: -132.3MB). Peak memory consumption was 396.9MB. 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...