/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 21:03:26,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 21:03:26,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-16 21:03:26,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 21:03:26,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 21:03:26,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 21:03:26,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 21:03:26,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 21:03:26,387 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 21:03:26,387 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 21:03:26,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 21:03:26,388 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 21:03:26,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 21:03:26,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 21:03:26,388 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 21:03:26,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 21:03:26,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 21:03:26,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 21:03:26,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 21:03:26,389 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 21:03:26,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 21:03:26,390 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 21:03:26,390 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 21:03:26,390 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 21:03:26,391 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 21:03:26,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 21:03:26,391 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 21:03:26,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 21:03:26,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 21:03:26,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 21:03:26,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 21:03:26,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 21:03:26,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 21:03:26,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 21:03:26,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 21:03:26,392 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 21:03:26,393 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 21:03:26,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 21:03:26,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 21:03:26,393 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 21:03:26,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 21:03:26,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 21:03:26,393 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 21:03:26,393 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 21:03:26,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 21:03:26,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 21:03:26,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 21:03:26,602 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 21:03:26,602 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 21:03:26,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c [2023-12-16 21:03:27,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 21:03:28,049 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 21:03:28,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c [2023-12-16 21:03:28,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee89ef266/582142ca92244c73a3007f5bdfc86079/FLAGd256980c3 [2023-12-16 21:03:28,245 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee89ef266/582142ca92244c73a3007f5bdfc86079 [2023-12-16 21:03:28,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 21:03:28,248 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 21:03:28,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 21:03:28,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 21:03:28,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 21:03:28,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:03:28" (1/1) ... [2023-12-16 21:03:28,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d67ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:28, skipping insertion in model container [2023-12-16 21:03:28,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:03:28" (1/1) ... [2023-12-16 21:03:28,322 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 21:03:28,502 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c[1271,1284] [2023-12-16 21:03:28,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 21:03:28,933 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 21:03:28,944 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c[1271,1284] [2023-12-16 21:03:29,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 21:03:29,124 INFO L206 MainTranslator]: Completed translation [2023-12-16 21:03:29,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29 WrapperNode [2023-12-16 21:03:29,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 21:03:29,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 21:03:29,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 21:03:29,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 21:03:29,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,307 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5070 [2023-12-16 21:03:29,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 21:03:29,308 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 21:03:29,308 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 21:03:29,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 21:03:29,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,405 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 21:03:29,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,608 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,620 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 21:03:29,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 21:03:29,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 21:03:29,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 21:03:29,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (1/1) ... [2023-12-16 21:03:29,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 21:03:29,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 21:03:29,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 21:03:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 21:03:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 21:03:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 21:03:29,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 21:03:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 21:03:29,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 21:03:29,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 21:03:30,312 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 21:03:30,313 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 21:03:34,753 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 21:03:34,969 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 21:03:34,969 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 21:03:34,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:03:34 BoogieIcfgContainer [2023-12-16 21:03:34,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 21:03:34,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 21:03:34,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 21:03:34,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 21:03:34,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:03:28" (1/3) ... [2023-12-16 21:03:34,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e92355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:03:34, skipping insertion in model container [2023-12-16 21:03:34,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:03:29" (2/3) ... [2023-12-16 21:03:34,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e92355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:03:34, skipping insertion in model container [2023-12-16 21:03:34,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:03:34" (3/3) ... [2023-12-16 21:03:34,976 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c [2023-12-16 21:03:34,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 21:03:34,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 21:03:35,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 21:03:35,038 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;@55f4ac76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 21:03:35,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 21:03:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 21:03:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 21:03:35,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:03:35,051 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 21:03:35,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:03:35,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:03:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash 465018047, now seen corresponding path program 1 times [2023-12-16 21:03:35,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:03:35,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484172719] [2023-12-16 21:03:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:03:35,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:03:35,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:03:35,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 21:03:35,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 21:03:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:03:36,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 21:03:36,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:03:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 21:03:36,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:03:36,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:03:36,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484172719] [2023-12-16 21:03:36,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484172719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:03:36,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:03:36,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 21:03:36,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631816604] [2023-12-16 21:03:36,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:03:36,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 21:03:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:03:36,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 21:03:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 21:03:36,406 INFO L87 Difference]: Start difference. First operand has 38 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 21:03:36,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:03:36,471 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2023-12-16 21:03:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 21:03:36,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-12-16 21:03:36,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:03:36,488 INFO L225 Difference]: With dead ends: 73 [2023-12-16 21:03:36,488 INFO L226 Difference]: Without dead ends: 36 [2023-12-16 21:03:36,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 21:03:36,494 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 21:03:36,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 21:03:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-16 21:03:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-16 21:03:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 21:03:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2023-12-16 21:03:36,526 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 82 [2023-12-16 21:03:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:03:36,526 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2023-12-16 21:03:36,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 21:03:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2023-12-16 21:03:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 21:03:36,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:03:36,531 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 21:03:36,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 21:03:36,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:03:36,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:03:36,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:03:36,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1729667557, now seen corresponding path program 1 times [2023-12-16 21:03:36,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:03:36,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688915000] [2023-12-16 21:03:36,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:03:36,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:03:36,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:03:36,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 21:03:36,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 21:03:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:03:40,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 21:03:40,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:03:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-16 21:03:40,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:03:40,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:03:40,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688915000] [2023-12-16 21:03:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688915000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:03:40,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:03:40,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 21:03:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569628706] [2023-12-16 21:03:40,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:03:40,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 21:03:40,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:03:40,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 21:03:40,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 21:03:40,376 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 21:03:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:03:41,040 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2023-12-16 21:03:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 21:03:41,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 82 [2023-12-16 21:03:41,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:03:41,042 INFO L225 Difference]: With dead ends: 67 [2023-12-16 21:03:41,042 INFO L226 Difference]: Without dead ends: 65 [2023-12-16 21:03:41,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 21:03:41,043 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 21:03:41,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 93 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 21:03:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-16 21:03:41,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2023-12-16 21:03:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 21:03:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2023-12-16 21:03:41,053 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 82 [2023-12-16 21:03:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:03:41,054 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2023-12-16 21:03:41,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-16 21:03:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2023-12-16 21:03:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 21:03:41,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:03:41,056 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-16 21:03:41,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 21:03:41,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:03:41,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:03:41,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:03:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1215904089, now seen corresponding path program 1 times [2023-12-16 21:03:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:03:41,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981450231] [2023-12-16 21:03:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:03:41,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:03:41,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:03:41,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 21:03:41,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 21:04:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:04:18,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 6016 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-16 21:04:18,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:04:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-16 21:04:18,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:04:19,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:04:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981450231] [2023-12-16 21:04:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981450231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:04:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1450071285] [2023-12-16 21:04:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:04:19,129 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 21:04:19,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 21:04:19,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 21:04:19,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 21:04:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:04:23,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 6016 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-16 21:04:23,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:04:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-16 21:04:24,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:04:24,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1450071285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:04:24,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 21:04:24,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-16 21:04:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866134053] [2023-12-16 21:04:24,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 21:04:24,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 21:04:24,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:04:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 21:04:24,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-16 21:04:24,434 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) [2023-12-16 21:04:27,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:04:27,462 INFO L93 Difference]: Finished difference Result 96 states and 134 transitions. [2023-12-16 21:04:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 21:04:27,462 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) Word has length 163 [2023-12-16 21:04:27,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:04:27,471 INFO L225 Difference]: With dead ends: 96 [2023-12-16 21:04:27,472 INFO L226 Difference]: Without dead ends: 94 [2023-12-16 21:04:27,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-12-16 21:04:27,478 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 31 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 21:04:27,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 243 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 21:04:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-16 21:04:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2023-12-16 21:04:27,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-16 21:04:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2023-12-16 21:04:27,490 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 163 [2023-12-16 21:04:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:04:27,490 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2023-12-16 21:04:27,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) [2023-12-16 21:04:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2023-12-16 21:04:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-16 21:04:27,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:04:27,514 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-16 21:04:27,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 21:04:27,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-16 21:04:27,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 21:04:27,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:04:27,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:04:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash 555063397, now seen corresponding path program 2 times [2023-12-16 21:04:27,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:04:27,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315739686] [2023-12-16 21:04:27,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 21:04:27,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:04:27,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:04:27,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 21:04:27,953 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 Received shutdown request... [2023-12-16 21:04:40,448 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 21:04:40,449 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 21:04:41,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 21:04:41,658 WARN L435 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)] Forcibly destroying the process [2023-12-16 21:04:41,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-16 21:04:41,694 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 21:04:41,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:04:41,694 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 245 with TraceHistMax 39,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1315739686] and IpTcStrategyModuleCvc4 [1353457296]. [2023-12-16 21:04:41,697 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-12-16 21:04:41,698 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 21:04:41,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:04:41 BoogieIcfgContainer [2023-12-16 21:04:41,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 137 [2023-12-16 21:04:41,702 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 21:04:41,702 INFO L158 Benchmark]: Toolchain (without parser) took 73453.96ms. Allocated memory was 305.1MB in the beginning and 954.2MB in the end (delta: 649.1MB). Free memory was 252.7MB in the beginning and 654.2MB in the end (delta: -401.4MB). Peak memory consumption was 248.9MB. Max. memory is 8.0GB. [2023-12-16 21:04:41,703 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 233.8MB. Free memory was 184.8MB in the beginning and 184.7MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 21:04:41,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 876.28ms. Allocated memory is still 305.1MB. Free memory was 252.4MB in the beginning and 160.9MB in the end (delta: 91.5MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. [2023-12-16 21:04:41,703 INFO L158 Benchmark]: Boogie Procedure Inliner took 180.57ms. Allocated memory is still 305.1MB. Free memory was 160.9MB in the beginning and 123.7MB in the end (delta: 37.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-16 21:04:41,704 INFO L158 Benchmark]: Boogie Preprocessor took 338.34ms. Allocated memory is still 305.1MB. Free memory was 123.7MB in the beginning and 220.2MB in the end (delta: -96.5MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. [2023-12-16 21:04:41,704 INFO L158 Benchmark]: RCFGBuilder took 5322.50ms. Allocated memory was 305.1MB in the beginning and 733.0MB in the end (delta: 427.8MB). Free memory was 220.2MB in the beginning and 616.3MB in the end (delta: -396.2MB). Peak memory consumption was 454.2MB. Max. memory is 8.0GB. [2023-12-16 21:04:41,704 INFO L158 Benchmark]: TraceAbstraction took 66730.86ms. Allocated memory was 733.0MB in the beginning and 954.2MB in the end (delta: 221.2MB). Free memory was 615.8MB in the beginning and 654.2MB in the end (delta: -38.3MB). Peak memory consumption was 183.7MB. Max. memory is 8.0GB. [2023-12-16 21:04:41,706 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 233.8MB. Free memory was 184.8MB in the beginning and 184.7MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 876.28ms. Allocated memory is still 305.1MB. Free memory was 252.4MB in the beginning and 160.9MB in the end (delta: 91.5MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 180.57ms. Allocated memory is still 305.1MB. Free memory was 160.9MB in the beginning and 123.7MB in the end (delta: 37.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 338.34ms. Allocated memory is still 305.1MB. Free memory was 123.7MB in the beginning and 220.2MB in the end (delta: -96.5MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. * RCFGBuilder took 5322.50ms. Allocated memory was 305.1MB in the beginning and 733.0MB in the end (delta: 427.8MB). Free memory was 220.2MB in the beginning and 616.3MB in the end (delta: -396.2MB). Peak memory consumption was 454.2MB. Max. memory is 8.0GB. * TraceAbstraction took 66730.86ms. Allocated memory was 733.0MB in the beginning and 954.2MB in the end (delta: 221.2MB). Free memory was 615.8MB in the beginning and 654.2MB in the end (delta: -38.3MB). Peak memory consumption was 183.7MB. 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 245 with TraceHistMax 39,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1315739686] and IpTcStrategyModuleCvc4 [1353457296]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.7s, OverallIterations: 4, TraceHistogramMax: 39, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 383 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 275 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 576 IncrementalHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 108 mSDtfsCounter, 576 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=3, InterpolantAutomatonStates: 17, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.0s SsaConstructionTime, 41.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 486 ConstructedInterpolants, 0 QuantifiedInterpolants, 2087 SizeOfPredicates, 105 NumberOfNonLiveVariables, 15738 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 3122/3280 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