/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.vcegar_QF_BV_usb_phy_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 17:11:26,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 17:11:26,558 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 17:11:26,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 17:11:26,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 17:11:26,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 17:11:26,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 17:11:26,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 17:11:26,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 17:11:26,597 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 17:11:26,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 17:11:26,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 17:11:26,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 17:11:26,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 17:11:26,599 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 17:11:26,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 17:11:26,599 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 17:11:26,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 17:11:26,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 17:11:26,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 17:11:26,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 17:11:26,601 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 17:11:26,601 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 17:11:26,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 17:11:26,601 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 17:11:26,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 17:11:26,602 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 17:11:26,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 17:11:26,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 17:11:26,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 17:11:26,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 17:11:26,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 17:11:26,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 17:11:26,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 17:11:26,605 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 17:11:26,605 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 17:11:26,605 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 17:11:26,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 17:11:26,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 17:11:26,606 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 17:11:26,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 17:11:26,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 17:11:26,607 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 17:11:26,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 17:11:26,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 17:11:26,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 17:11:26,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 17:11:26,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 17:11:26,877 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 17:11:26,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c [2023-12-26 17:11:27,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 17:11:28,336 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 17:11:28,337 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c [2023-12-26 17:11:28,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05eb740c4/1aa8a395b66e4a2ca1a79e7023aa9792/FLAGa270b3f3c [2023-12-26 17:11:28,372 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05eb740c4/1aa8a395b66e4a2ca1a79e7023aa9792 [2023-12-26 17:11:28,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 17:11:28,376 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 17:11:28,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 17:11:28,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 17:11:28,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 17:11:28,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 05:11:28" (1/1) ... [2023-12-26 17:11:28,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4017e2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:28, skipping insertion in model container [2023-12-26 17:11:28,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 05:11:28" (1/1) ... [2023-12-26 17:11:28,453 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 17:11:28,630 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.vcegar_QF_BV_usb_phy_1.c[1262,1275] [2023-12-26 17:11:28,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 17:11:28,988 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 17:11:29,001 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.vcegar_QF_BV_usb_phy_1.c[1262,1275] [2023-12-26 17:11:29,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 17:11:29,129 INFO L206 MainTranslator]: Completed translation [2023-12-26 17:11:29,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29 WrapperNode [2023-12-26 17:11:29,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 17:11:29,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 17:11:29,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 17:11:29,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 17:11:29,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,319 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2519 [2023-12-26 17:11:29,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 17:11:29,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 17:11:29,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 17:11:29,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 17:11:29,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,347 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,414 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 17:11:29,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 17:11:29,522 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 17:11:29,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 17:11:29,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 17:11:29,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (1/1) ... [2023-12-26 17:11:29,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 17:11:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 17:11:29,559 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 17:11:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 17:11:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 17:11:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 17:11:29,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 17:11:29,592 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 17:11:30,004 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 17:11:30,006 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 17:11:32,481 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 17:11:32,572 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 17:11:32,573 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 17:11:32,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 05:11:32 BoogieIcfgContainer [2023-12-26 17:11:32,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 17:11:32,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 17:11:32,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 17:11:32,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 17:11:32,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 05:11:28" (1/3) ... [2023-12-26 17:11:32,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afad00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 05:11:32, skipping insertion in model container [2023-12-26 17:11:32,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:11:29" (2/3) ... [2023-12-26 17:11:32,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afad00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 05:11:32, skipping insertion in model container [2023-12-26 17:11:32,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 05:11:32" (3/3) ... [2023-12-26 17:11:32,581 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c [2023-12-26 17:11:32,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 17:11:32,597 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 17:11:32,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 17:11:32,643 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;@c6cc0fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 17:11:32,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 17:11:32,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-26 17:11:32,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:11:32,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-26 17:11:32,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:11:32,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:11:32,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-26 17:11:32,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:11:32,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170399218] [2023-12-26 17:11:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 17:11:32,675 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 17:11:32,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:11:32,677 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 17:11:32,689 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 17:11:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 17:11:33,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-26 17:11:33,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:11:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:11:33,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 17:11:33,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 17:11:33,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170399218] [2023-12-26 17:11:33,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170399218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 17:11:33,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 17:11:33,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-26 17:11:33,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580724839] [2023-12-26 17:11:33,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 17:11:33,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 17:11:33,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 17:11:33,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 17:11:33,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 17:11:33,379 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 17:11:33,593 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-26 17:11:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 17:11:33,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-26 17:11:33,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 17:11:33,601 INFO L225 Difference]: With dead ends: 16 [2023-12-26 17:11:33,601 INFO L226 Difference]: Without dead ends: 9 [2023-12-26 17:11:33,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:11:33,606 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-26 17:11:33,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-26 17:11:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-26 17:11:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-26 17:11:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-26 17:11:33,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-26 17:11:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 17:11:33,631 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-26 17:11:33,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-26 17:11:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-26 17:11:33,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:11:33,632 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-26 17:11:33,636 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 17:11:33,836 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 17:11:33,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:11:33,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:11:33,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-26 17:11:33,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:11:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077779169] [2023-12-26 17:11:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 17:11:33,840 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 17:11:33,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:11:33,841 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 17:11:33,843 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 17:11:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 17:11:36,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-26 17:11:36,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:11:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:11:37,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 17:11:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:11:37,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 17:11:37,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077779169] [2023-12-26 17:11:37,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077779169] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 17:11:37,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 17:11:37,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-26 17:11:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245529080] [2023-12-26 17:11:37,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 17:11:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-26 17:11:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 17:11:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-26 17:11:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-26 17:11:37,216 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:37,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 17:11:37,684 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-26 17:11:37,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-26 17:11:37,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-26 17:11:37,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 17:11:37,685 INFO L225 Difference]: With dead ends: 14 [2023-12-26 17:11:37,685 INFO L226 Difference]: Without dead ends: 12 [2023-12-26 17:11:37,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-26 17:11:37,687 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-26 17:11:37,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-26 17:11:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-26 17:11:37,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-26 17:11:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-26 17:11:37,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-26 17:11:37,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 17:11:37,691 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-26 17:11:37,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-26 17:11:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-26 17:11:37,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:11:37,692 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-26 17:11:37,709 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 17:11:37,892 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 17:11:37,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:11:37,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:11:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-26 17:11:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:11:37,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178178892] [2023-12-26 17:11:37,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 17:11:37,899 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 17:11:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:11:37,900 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 17:11:37,936 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 17:11:47,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 17:11:47,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 17:11:47,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 3366 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-26 17:11:47,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:11:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:11:47,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 17:11:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:11:47,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 17:11:47,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178178892] [2023-12-26 17:11:47,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178178892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 17:11:47,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 17:11:47,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-26 17:11:47,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813502838] [2023-12-26 17:11:47,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 17:11:47,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-26 17:11:47,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 17:11:47,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-26 17:11:47,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-26 17:11:47,800 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 17:11:48,391 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-12-26 17:11:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-26 17:11:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-26 17:11:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 17:11:48,392 INFO L225 Difference]: With dead ends: 17 [2023-12-26 17:11:48,392 INFO L226 Difference]: Without dead ends: 15 [2023-12-26 17:11:48,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-26 17:11:48,394 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-26 17:11:48,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 16 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-26 17:11:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-26 17:11:48,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-26 17:11:48,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:48,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-26 17:11:48,398 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2023-12-26 17:11:48,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 17:11:48,399 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-26 17:11:48,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:11:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-26 17:11:48,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-26 17:11:48,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:11:48,399 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-26 17:11:48,419 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 17:11:48,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 17:11:48,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:11:48,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:11:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 3 times [2023-12-26 17:11:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:11:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636299972] [2023-12-26 17:11:48,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 17:11:48,604 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 17:11:48,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:11:48,605 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 17:11:48,606 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 17:12:02,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-26 17:12:02,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 17:12:02,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 4961 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-26 17:12:02,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:12:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:12:02,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 17:12:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:12:03,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 17:12:03,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636299972] [2023-12-26 17:12:03,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636299972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 17:12:03,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 17:12:03,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-26 17:12:03,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208914583] [2023-12-26 17:12:03,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 17:12:03,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-26 17:12:03,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 17:12:03,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-26 17:12:03,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-26 17:12:03,123 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:12:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 17:12:03,826 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2023-12-26 17:12:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-26 17:12:03,827 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-26 17:12:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 17:12:03,828 INFO L225 Difference]: With dead ends: 20 [2023-12-26 17:12:03,828 INFO L226 Difference]: Without dead ends: 18 [2023-12-26 17:12:03,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-12-26 17:12:03,829 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-26 17:12:03,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-26 17:12:03,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-26 17:12:03,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-12-26 17:12:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:12:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-12-26 17:12:03,833 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2023-12-26 17:12:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 17:12:03,833 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-12-26 17:12:03,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:12:03,833 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-12-26 17:12:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-26 17:12:03,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:12:03,834 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2023-12-26 17:12:03,867 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 17:12:04,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 17:12:04,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:12:04,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:12:04,049 INFO L85 PathProgramCache]: Analyzing trace with hash -310375345, now seen corresponding path program 4 times [2023-12-26 17:12:04,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:12:04,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537942648] [2023-12-26 17:12:04,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-26 17:12:04,053 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 17:12:04,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:12:04,054 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 17:12:04,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-26 17:12:42,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-26 17:12:42,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 17:12:42,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 6556 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-26 17:12:42,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:12:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:12:42,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 17:12:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:12:42,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 17:12:42,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537942648] [2023-12-26 17:12:42,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537942648] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 17:12:42,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 17:12:42,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-26 17:12:42,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985171868] [2023-12-26 17:12:42,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 17:12:42,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-26 17:12:42,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 17:12:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-26 17:12:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-26 17:12:42,827 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:12:43,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 17:12:43,732 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2023-12-26 17:12:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-26 17:12:43,732 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-26 17:12:43,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 17:12:43,733 INFO L225 Difference]: With dead ends: 23 [2023-12-26 17:12:43,733 INFO L226 Difference]: Without dead ends: 21 [2023-12-26 17:12:43,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-12-26 17:12:43,734 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-26 17:12:43,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-26 17:12:43,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-26 17:12:43,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-12-26 17:12:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:12:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2023-12-26 17:12:43,738 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 16 [2023-12-26 17:12:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 17:12:43,739 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2023-12-26 17:12:43,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:12:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2023-12-26 17:12:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-26 17:12:43,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:12:43,740 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1] [2023-12-26 17:12:43,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-26 17:12:43,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 17:12:43,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:12:43,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:12:43,941 INFO L85 PathProgramCache]: Analyzing trace with hash 677461981, now seen corresponding path program 5 times [2023-12-26 17:12:43,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:12:43,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727836247] [2023-12-26 17:12:43,945 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-26 17:12:43,945 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 17:12:43,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:12:43,947 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 17:12:43,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-26 17:12:51,319 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-26 17:12:51,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 17:12:51,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 8151 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-26 17:12:51,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:12:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:12:51,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 17:12:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:12:52,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 17:12:52,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727836247] [2023-12-26 17:12:52,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727836247] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 17:12:52,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 17:12:52,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-26 17:12:52,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334547846] [2023-12-26 17:12:52,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 17:12:52,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-26 17:12:52,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 17:12:52,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-26 17:12:52,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-26 17:12:52,126 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:12:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 17:12:53,199 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2023-12-26 17:12:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-26 17:12:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-26 17:12:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 17:12:53,200 INFO L225 Difference]: With dead ends: 26 [2023-12-26 17:12:53,200 INFO L226 Difference]: Without dead ends: 24 [2023-12-26 17:12:53,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2023-12-26 17:12:53,201 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-26 17:12:53,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 22 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-26 17:12:53,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-26 17:12:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-12-26 17:12:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:12:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2023-12-26 17:12:53,206 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2023-12-26 17:12:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 17:12:53,206 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2023-12-26 17:12:53,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:12:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2023-12-26 17:12:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-26 17:12:53,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:12:53,207 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1] [2023-12-26 17:12:53,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-26 17:12:53,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 17:12:53,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:12:53,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:12:53,409 INFO L85 PathProgramCache]: Analyzing trace with hash 223328655, now seen corresponding path program 6 times [2023-12-26 17:12:53,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:12:53,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880497244] [2023-12-26 17:12:53,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-26 17:12:53,414 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 17:12:53,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:12:53,415 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 17:12:53,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-26 17:14:20,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-26 17:14:20,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 17:14:20,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 9746 conjuncts, 213 conjunts are in the unsatisfiable core [2023-12-26 17:14:20,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:14:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:14:22,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 17:14:40,057 WARN L293 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 615 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 17:16:18,987 WARN L293 SmtUtils]: Spent 37.87s on a formula simplification that was a NOOP. DAG size: 895 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-26 17:25:29,844 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-26 17:25:29,847 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-26 17:25:29,847 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-26 17:25:29,904 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 (8)] Ended with exit code 0 [2023-12-26 17:25:30,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 17:25:30,045 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 23 with TraceHistMax 7,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-26 17:25:30,049 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1] [2023-12-26 17:25:30,051 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-26 17:25:30,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.12 05:25:30 BoogieIcfgContainer [2023-12-26 17:25:30,053 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-26 17:25:30,054 INFO L158 Benchmark]: Toolchain (without parser) took 841677.65ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 867.2MB). Free memory was 135.5MB in the beginning and 444.1MB in the end (delta: -308.5MB). Peak memory consumption was 670.4MB. Max. memory is 8.0GB. [2023-12-26 17:25:30,054 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 17:25:30,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 751.90ms. Allocated memory is still 188.7MB. Free memory was 135.1MB in the beginning and 68.4MB in the end (delta: 66.6MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. [2023-12-26 17:25:30,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 187.83ms. Allocated memory was 188.7MB in the beginning and 309.3MB in the end (delta: 120.6MB). Free memory was 68.4MB in the beginning and 265.1MB in the end (delta: -196.7MB). Peak memory consumption was 23.5MB. Max. memory is 8.0GB. [2023-12-26 17:25:30,055 INFO L158 Benchmark]: Boogie Preprocessor took 200.65ms. Allocated memory is still 309.3MB. Free memory was 265.1MB in the beginning and 246.1MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-26 17:25:30,055 INFO L158 Benchmark]: RCFGBuilder took 3051.67ms. Allocated memory is still 309.3MB. Free memory was 246.1MB in the beginning and 234.0MB in the end (delta: 12.2MB). Peak memory consumption was 175.2MB. Max. memory is 8.0GB. [2023-12-26 17:25:30,057 INFO L158 Benchmark]: TraceAbstraction took 837477.54ms. Allocated memory was 309.3MB in the beginning and 1.1GB in the end (delta: 746.6MB). Free memory was 233.4MB in the beginning and 444.1MB in the end (delta: -210.6MB). Peak memory consumption was 647.1MB. Max. memory is 8.0GB. [2023-12-26 17:25:30,058 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 751.90ms. Allocated memory is still 188.7MB. Free memory was 135.1MB in the beginning and 68.4MB in the end (delta: 66.6MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 187.83ms. Allocated memory was 188.7MB in the beginning and 309.3MB in the end (delta: 120.6MB). Free memory was 68.4MB in the beginning and 265.1MB in the end (delta: -196.7MB). Peak memory consumption was 23.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 200.65ms. Allocated memory is still 309.3MB. Free memory was 265.1MB in the beginning and 246.1MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * RCFGBuilder took 3051.67ms. Allocated memory is still 309.3MB. Free memory was 246.1MB in the beginning and 234.0MB in the end (delta: 12.2MB). Peak memory consumption was 175.2MB. Max. memory is 8.0GB. * TraceAbstraction took 837477.54ms. Allocated memory was 309.3MB in the beginning and 1.1GB in the end (delta: 746.6MB). Free memory was 233.4MB in the beginning and 444.1MB in the end (delta: -210.6MB). Peak memory consumption was 647.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 23 with TraceHistMax 7,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 837.4s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 150 IncrementalHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 12 mSDtfsCounter, 150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=6, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.5s SsaConstructionTime, 68.0s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 123 ConstructedInterpolants, 50 QuantifiedInterpolants, 2654 SizeOfPredicates, 157 NumberOfNonLiveVariables, 24981 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown