/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.cache_coherence_three.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 04:35:54,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 04:35:55,050 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 04:35:55,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 04:35:55,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 04:35:55,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 04:35:55,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 04:35:55,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 04:35:55,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 04:35:55,084 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 04:35:55,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 04:35:55,085 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 04:35:55,085 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 04:35:55,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 04:35:55,085 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 04:35:55,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 04:35:55,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 04:35:55,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 04:35:55,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 04:35:55,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 04:35:55,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 04:35:55,087 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 04:35:55,087 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 04:35:55,087 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 04:35:55,087 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 04:35:55,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 04:35:55,088 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 04:35:55,088 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 04:35:55,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 04:35:55,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 04:35:55,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 04:35:55,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 04:35:55,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 04:35:55,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 04:35:55,090 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 04:35:55,090 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 04:35:55,090 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 04:35:55,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 04:35:55,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 04:35:55,090 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 04:35:55,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 04:35:55,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 04:35:55,091 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 04:35:55,091 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 04:35:55,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 04:35:55,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 04:35:55,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 04:35:55,313 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 04:35:55,313 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 04:35:55,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cache_coherence_three.c [2023-12-26 04:35:56,347 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 04:35:56,620 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 04:35:56,620 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cache_coherence_three.c [2023-12-26 04:35:56,640 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/311950fc5/b4b2835f44ed40698bfe5f4fdc50cecf/FLAG82ff03def [2023-12-26 04:35:56,650 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/311950fc5/b4b2835f44ed40698bfe5f4fdc50cecf [2023-12-26 04:35:56,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 04:35:56,652 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 04:35:56,653 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 04:35:56,654 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 04:35:56,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 04:35:56,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 04:35:56" (1/1) ... [2023-12-26 04:35:56,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c48fe76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:56, skipping insertion in model container [2023-12-26 04:35:56,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 04:35:56" (1/1) ... [2023-12-26 04:35:56,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 04:35:56,845 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.cache_coherence_three.c[1261,1274] [2023-12-26 04:35:57,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 04:35:57,202 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 04:35:57,209 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.cache_coherence_three.c[1261,1274] [2023-12-26 04:35:57,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 04:35:57,343 INFO L206 MainTranslator]: Completed translation [2023-12-26 04:35:57,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57 WrapperNode [2023-12-26 04:35:57,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 04:35:57,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 04:35:57,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 04:35:57,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 04:35:57,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,491 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3007 [2023-12-26 04:35:57,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 04:35:57,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 04:35:57,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 04:35:57,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 04:35:57,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,558 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 04:35:57,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 04:35:57,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 04:35:57,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 04:35:57,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 04:35:57,689 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (1/1) ... [2023-12-26 04:35:57,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 04:35:57,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 04:35:57,711 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 04:35:57,744 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 04:35:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 04:35:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 04:35:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 04:35:57,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 04:35:58,168 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 04:35:58,170 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 04:36:00,979 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 04:36:01,050 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 04:36:01,050 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 04:36:01,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 04:36:01 BoogieIcfgContainer [2023-12-26 04:36:01,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 04:36:01,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 04:36:01,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 04:36:01,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 04:36:01,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 04:35:56" (1/3) ... [2023-12-26 04:36:01,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3ba729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 04:36:01, skipping insertion in model container [2023-12-26 04:36:01,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 04:35:57" (2/3) ... [2023-12-26 04:36:01,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3ba729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 04:36:01, skipping insertion in model container [2023-12-26 04:36:01,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 04:36:01" (3/3) ... [2023-12-26 04:36:01,056 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cache_coherence_three.c [2023-12-26 04:36:01,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 04:36:01,067 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 04:36:01,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 04:36:01,096 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;@4511ad4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 04:36:01,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 04:36:01,099 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 04:36:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-26 04:36:01,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 04:36:01,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-26 04:36:01,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 04:36:01,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 04:36:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-26 04:36:01,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 04:36:01,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335665628] [2023-12-26 04:36:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 04:36:01,115 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 04:36:01,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 04:36:01,126 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 04:36:01,137 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 04:36:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 04:36:01,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-26 04:36:01,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 04:36:02,270 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 04:36:02,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 04:36:02,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 04:36:02,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335665628] [2023-12-26 04:36:02,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335665628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 04:36:02,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 04:36:02,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-26 04:36:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712713051] [2023-12-26 04:36:02,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 04:36:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 04:36:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 04:36:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 04:36:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 04:36:02,293 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 04:36:02,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 04:36:02,596 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-26 04:36:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 04:36:02,598 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 04:36:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 04:36:02,603 INFO L225 Difference]: With dead ends: 16 [2023-12-26 04:36:02,603 INFO L226 Difference]: Without dead ends: 9 [2023-12-26 04:36:02,604 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 04:36:02,606 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-26 04:36:02,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-26 04:36:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-26 04:36:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-26 04:36:02,624 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 04:36:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-26 04:36:02,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-26 04:36:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 04:36:02,625 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-26 04:36:02,625 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 04:36:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-26 04:36:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-26 04:36:02,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 04:36:02,626 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-26 04:36:02,633 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 04:36:02,830 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 04:36:02,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 04:36:02,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 04:36:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-26 04:36:02,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 04:36:02,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123802295] [2023-12-26 04:36:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 04:36:02,835 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 04:36:02,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 04:36:02,850 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 04:36:02,872 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 04:36:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 04:36:16,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 2810 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-26 04:36:16,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 04:36:16,762 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 04:36:16,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 04:36:25,039 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 04:36:25,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 04:36:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123802295] [2023-12-26 04:36:25,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123802295] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 04:36:25,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 04:36:25,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-26 04:36:25,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171425580] [2023-12-26 04:36:25,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 04:36:25,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-26 04:36:25,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 04:36:25,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-26 04:36:25,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2023-12-26 04:36:25,043 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 04:36:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 04:36:31,245 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-26 04:36:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-26 04:36:31,245 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 04:36:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 04:36:31,246 INFO L225 Difference]: With dead ends: 14 [2023-12-26 04:36:31,246 INFO L226 Difference]: Without dead ends: 12 [2023-12-26 04:36:31,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=34, Invalid=74, Unknown=2, NotChecked=0, Total=110 [2023-12-26 04:36:31,247 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-26 04:36:31,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-26 04:36:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-26 04:36:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-26 04:36:31,254 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 04:36:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-26 04:36:31,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-26 04:36:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 04:36:31,254 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-26 04:36:31,254 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 04:36:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-26 04:36:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-26 04:36:31,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 04:36:31,255 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-26 04:36:31,309 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 04:36:31,455 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 04:36:31,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 04:36:31,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 04:36:31,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-26 04:36:31,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 04:36:31,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576022212] [2023-12-26 04:36:31,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 04:36:31,461 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 04:36:31,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 04:36:31,463 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 04:36:31,463 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 04:37:21,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 04:37:21,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 04:37:21,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 5388 conjuncts, 140 conjunts are in the unsatisfiable core [2023-12-26 04:37:21,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 04:37:22,250 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 04:37:22,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 04:38:23,278 WARN L293 SmtUtils]: Spent 22.39s on a formula simplification that was a NOOP. DAG size: 624 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 04:40:01,694 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 04:40:01,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 04:40:01,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576022212] [2023-12-26 04:40:01,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576022212] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 04:40:01,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 04:40:01,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-26 04:40:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654925056] [2023-12-26 04:40:01,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 04:40:01,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-26 04:40:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 04:40:01,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-26 04:40:01,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2023-12-26 04:40:01,714 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 04:40:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 04:40:05,654 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-12-26 04:40:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-26 04:40:05,654 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 04:40:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 04:40:05,655 INFO L225 Difference]: With dead ends: 17 [2023-12-26 04:40:05,655 INFO L226 Difference]: Without dead ends: 15 [2023-12-26 04:40:05,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=60, Invalid=149, Unknown=1, NotChecked=0, Total=210 [2023-12-26 04:40:05,656 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-26 04:40:05,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-26 04:40:05,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-26 04:40:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-26 04:40:05,660 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 04:40:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-26 04:40:05,661 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2023-12-26 04:40:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 04:40:05,661 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-26 04:40:05,661 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 04:40:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-26 04:40:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-26 04:40:05,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 04:40:05,661 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-26 04:40:05,696 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 (4)] Ended with exit code 0 [2023-12-26 04:40:05,862 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 04:40:05,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 04:40:05,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 04:40:05,863 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 3 times [2023-12-26 04:40:05,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 04:40:05,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916644390] [2023-12-26 04:40:05,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 04:40:05,869 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 04:40:05,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 04:40:05,870 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 04:40:05,875 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 04:41:26,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-26 04:41:26,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 04:41:26,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 7966 conjuncts, 181 conjunts are in the unsatisfiable core [2023-12-26 04:41:26,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 04:41:27,732 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 04:41:27,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 04:43:00,266 WARN L293 SmtUtils]: Spent 28.01s on a formula simplification that was a NOOP. DAG size: 803 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-26 04:50:18,286 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 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-26 04:50:18,290 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-26 04:50:18,296 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 04:50:18,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-26 04:50:18,512 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 04:50:18,512 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 14 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-20-5-3-4-2-3-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-25-5-3-4-2-3-2-3-2-2-1 context. [2023-12-26 04:50:18,516 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-12-26 04:50:18,518 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-26 04:50:18,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.12 04:50:18 BoogieIcfgContainer [2023-12-26 04:50:18,520 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-26 04:50:18,520 INFO L158 Benchmark]: Toolchain (without parser) took 861868.13ms. Allocated memory was 284.2MB in the beginning and 1.2GB in the end (delta: 876.6MB). Free memory was 226.1MB in the beginning and 943.6MB in the end (delta: -717.6MB). Peak memory consumption was 746.3MB. Max. memory is 8.0GB. [2023-12-26 04:50:18,521 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 04:50:18,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 690.04ms. Allocated memory is still 284.2MB. Free memory was 226.1MB in the beginning and 135.3MB in the end (delta: 90.7MB). Peak memory consumption was 91.2MB. Max. memory is 8.0GB. [2023-12-26 04:50:18,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 146.55ms. Allocated memory is still 284.2MB. Free memory was 135.3MB in the beginning and 112.8MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-26 04:50:18,521 INFO L158 Benchmark]: Boogie Preprocessor took 196.41ms. Allocated memory is still 284.2MB. Free memory was 112.8MB in the beginning and 227.5MB in the end (delta: -114.6MB). Peak memory consumption was 38.4MB. Max. memory is 8.0GB. [2023-12-26 04:50:18,521 INFO L158 Benchmark]: RCFGBuilder took 3362.36ms. Allocated memory was 284.2MB in the beginning and 481.3MB in the end (delta: 197.1MB). Free memory was 227.5MB in the beginning and 233.7MB in the end (delta: -6.3MB). Peak memory consumption was 297.8MB. Max. memory is 8.0GB. [2023-12-26 04:50:18,522 INFO L158 Benchmark]: TraceAbstraction took 857467.93ms. Allocated memory was 481.3MB in the beginning and 1.2GB in the end (delta: 679.5MB). Free memory was 233.2MB in the beginning and 943.6MB in the end (delta: -710.4MB). Peak memory consumption was 556.8MB. Max. memory is 8.0GB. [2023-12-26 04:50:18,523 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 690.04ms. Allocated memory is still 284.2MB. Free memory was 226.1MB in the beginning and 135.3MB in the end (delta: 90.7MB). Peak memory consumption was 91.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 146.55ms. Allocated memory is still 284.2MB. Free memory was 135.3MB in the beginning and 112.8MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 196.41ms. Allocated memory is still 284.2MB. Free memory was 112.8MB in the beginning and 227.5MB in the end (delta: -114.6MB). Peak memory consumption was 38.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3362.36ms. Allocated memory was 284.2MB in the beginning and 481.3MB in the end (delta: 197.1MB). Free memory was 227.5MB in the beginning and 233.7MB in the end (delta: -6.3MB). Peak memory consumption was 297.8MB. Max. memory is 8.0GB. * TraceAbstraction took 857467.93ms. Allocated memory was 481.3MB in the beginning and 1.2GB in the end (delta: 679.5MB). Free memory was 233.2MB in the beginning and 943.6MB in the end (delta: -710.4MB). Peak memory consumption was 556.8MB. 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 14 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-20-5-3-4-2-3-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-25-5-3-4-2-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 857.4s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 6 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 40.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 62.0s SatisfiabilityAnalysisTime, 169.9s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 11 QuantifiedInterpolants, 422041 SizeOfPredicates, 318 NumberOfNonLiveVariables, 8430 ConjunctsInSsa, 310 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/18 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