/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.resistance.1.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 15:21:10,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 15:21:10,659 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 15:21:10,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 15:21:10,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 15:21:10,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 15:21:10,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 15:21:10,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 15:21:10,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 15:21:10,687 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 15:21:10,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 15:21:10,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 15:21:10,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 15:21:10,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 15:21:10,689 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 15:21:10,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 15:21:10,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 15:21:10,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 15:21:10,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 15:21:10,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 15:21:10,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 15:21:10,691 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 15:21:10,691 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 15:21:10,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 15:21:10,692 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 15:21:10,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 15:21:10,692 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 15:21:10,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 15:21:10,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 15:21:10,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 15:21:10,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 15:21:10,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 15:21:10,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 15:21:10,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 15:21:10,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 15:21:10,694 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 15:21:10,694 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 15:21:10,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 15:21:10,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 15:21:10,694 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 15:21:10,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 15:21:10,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 15:21:10,695 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 15:21:10,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 15:21:10,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 15:21:10,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 15:21:10,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 15:21:10,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 15:21:10,901 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 15:21:10,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop1-back-serstep.c [2023-12-26 15:21:11,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 15:21:12,014 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 15:21:12,015 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop1-back-serstep.c [2023-12-26 15:21:12,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa3d7c71/189fe818aec84e8295f0258540af060f/FLAG6d327d19f [2023-12-26 15:21:12,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa3d7c71/189fe818aec84e8295f0258540af060f [2023-12-26 15:21:12,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 15:21:12,049 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 15:21:12,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 15:21:12,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 15:21:12,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 15:21:12,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2abd348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12, skipping insertion in model container [2023-12-26 15:21:12,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,100 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 15:21:12,223 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.resistance.1.prop1-back-serstep.c[1178,1191] [2023-12-26 15:21:12,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 15:21:12,454 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 15:21:12,462 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.resistance.1.prop1-back-serstep.c[1178,1191] [2023-12-26 15:21:12,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 15:21:12,551 INFO L206 MainTranslator]: Completed translation [2023-12-26 15:21:12,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12 WrapperNode [2023-12-26 15:21:12,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 15:21:12,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 15:21:12,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 15:21:12,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 15:21:12,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,704 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1819 [2023-12-26 15:21:12,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 15:21:12,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 15:21:12,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 15:21:12,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 15:21:12,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,757 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 15:21:12,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,794 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 15:21:12,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 15:21:12,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 15:21:12,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 15:21:12,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (1/1) ... [2023-12-26 15:21:12,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 15:21:12,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 15:21:12,858 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 15:21:12,878 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 15:21:12,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 15:21:12,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 15:21:12,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 15:21:12,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 15:21:13,127 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 15:21:13,129 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 15:21:14,309 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 15:21:14,356 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 15:21:14,357 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 15:21:14,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:21:14 BoogieIcfgContainer [2023-12-26 15:21:14,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 15:21:14,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 15:21:14,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 15:21:14,361 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 15:21:14,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 03:21:12" (1/3) ... [2023-12-26 15:21:14,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3153cc74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:21:14, skipping insertion in model container [2023-12-26 15:21:14,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:21:12" (2/3) ... [2023-12-26 15:21:14,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3153cc74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:21:14, skipping insertion in model container [2023-12-26 15:21:14,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:21:14" (3/3) ... [2023-12-26 15:21:14,364 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.resistance.1.prop1-back-serstep.c [2023-12-26 15:21:14,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 15:21:14,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 15:21:14,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 15:21:14,412 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;@5bd912c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 15:21:14,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 15:21:14,415 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 15:21:14,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-26 15:21:14,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:21:14,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-26 15:21:14,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:21:14,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:21:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-26 15:21:14,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:21:14,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84110298] [2023-12-26 15:21:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 15:21:14,438 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 15:21:14,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:21:14,440 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 15:21:14,472 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 15:21:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 15:21:14,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-26 15:21:14,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:21:14,872 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 15:21:14,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 15:21:14,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:21:14,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84110298] [2023-12-26 15:21:14,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84110298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 15:21:14,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 15:21:14,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-26 15:21:14,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349351891] [2023-12-26 15:21:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 15:21:14,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 15:21:14,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:21:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 15:21:14,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 15:21:14,900 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 15:21:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:21:15,274 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-26 15:21:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 15:21:15,276 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 15:21:15,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:21:15,281 INFO L225 Difference]: With dead ends: 16 [2023-12-26 15:21:15,281 INFO L226 Difference]: Without dead ends: 9 [2023-12-26 15:21:15,283 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 15:21:15,285 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-26 15:21:15,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-26 15:21:15,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-26 15:21:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-26 15:21:15,305 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 15:21:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-26 15:21:15,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-26 15:21:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:21:15,306 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-26 15:21:15,306 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 15:21:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-26 15:21:15,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-26 15:21:15,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:21:15,307 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-26 15:21:15,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-26 15:21:15,512 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 15:21:15,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:21:15,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:21:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-26 15:21:15,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:21:15,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867712151] [2023-12-26 15:21:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 15:21:15,515 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 15:21:15,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:21:15,516 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 15:21:15,517 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 15:21:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 15:21:16,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-26 15:21:16,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:21:17,102 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 15:21:17,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:21:18,842 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 15:21:18,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:21:18,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867712151] [2023-12-26 15:21:18,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867712151] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 15:21:18,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 15:21:18,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-26 15:21:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891233398] [2023-12-26 15:21:18,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 15:21:18,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-26 15:21:18,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:21:18,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-26 15:21:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-26 15:21:18,850 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 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 15:21:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:21:19,822 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-26 15:21:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-26 15:21:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 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 15:21:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:21:19,823 INFO L225 Difference]: With dead ends: 14 [2023-12-26 15:21:19,823 INFO L226 Difference]: Without dead ends: 12 [2023-12-26 15:21:19,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-26 15:21:19,824 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-26 15:21:19,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-26 15:21:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-26 15:21:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-26 15:21:19,826 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 15:21:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-26 15:21:19,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-26 15:21:19,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:21:19,827 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-26 15:21:19,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 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 15:21:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-26 15:21:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-26 15:21:19,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:21:19,828 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-26 15:21:19,840 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 15:21:20,040 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 15:21:20,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:21:20,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:21:20,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-26 15:21:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:21:20,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162308739] [2023-12-26 15:21:20,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 15:21:20,044 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 15:21:20,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:21:20,045 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 15:21:20,058 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 15:21:22,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 15:21:22,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:21:23,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 224 conjunts are in the unsatisfiable core [2023-12-26 15:21:23,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:21:27,120 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 15:21:27,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:22:26,537 WARN L293 SmtUtils]: Spent 15.84s on a formula simplification that was a NOOP. DAG size: 1072 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 15:23:59,455 WARN L293 SmtUtils]: Spent 32.72s on a formula simplification that was a NOOP. DAG size: 1660 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 15:23:59,470 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 15:23:59,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:23:59,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162308739] [2023-12-26 15:23:59,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162308739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 15:23:59,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 15:23:59,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-26 15:23:59,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373581510] [2023-12-26 15:23:59,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 15:23:59,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-26 15:23:59,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:23:59,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-26 15:23:59,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=138, Unknown=9, NotChecked=0, Total=182 [2023-12-26 15:23:59,472 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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 15:24:19,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:24:19,719 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-12-26 15:24:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-26 15:24:19,720 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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 15:24:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:24:19,720 INFO L225 Difference]: With dead ends: 17 [2023-12-26 15:24:19,720 INFO L226 Difference]: Without dead ends: 15 [2023-12-26 15:24:19,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 121.8s TimeCoverageRelationStatistics Valid=67, Invalid=230, Unknown=9, NotChecked=0, Total=306 [2023-12-26 15:24:19,721 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-26 15:24:19,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 15 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-26 15:24:19,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-26 15:24:19,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-26 15:24:19,727 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 15:24:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-26 15:24:19,728 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2023-12-26 15:24:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:24:19,728 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-26 15:24:19,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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 15:24:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-26 15:24:19,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-26 15:24:19,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:24:19,728 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-26 15:24:19,753 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 15:24:19,936 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 15:24:19,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:24:19,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:24:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 3 times [2023-12-26 15:24:19,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:24:19,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381429676] [2023-12-26 15:24:19,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 15:24:19,940 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 15:24:19,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:24:19,941 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 15:24:19,941 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 15:24:28,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-26 15:24:28,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:24:29,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 4115 conjuncts, 483 conjunts are in the unsatisfiable core [2023-12-26 15:24:29,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:24:49,639 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 15:24:49,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:35:12,217 WARN L293 SmtUtils]: Spent 4.85m on a formula simplification that was a NOOP. DAG size: 3907 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-26 15:35:37,541 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 15:35:37,543 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-26 15:35:37,557 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 15:35:37,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-26 15:35:37,760 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 15:35:37,760 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 ∧-12-3-4-4-5-4-5-3-5-3-5-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-27-4-5-4-5-4-5-3-5-3-5-2-1 context. [2023-12-26 15:35:37,765 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-12-26 15:35:37,766 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-26 15:35:37,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.12 03:35:37 BoogieIcfgContainer [2023-12-26 15:35:37,768 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-26 15:35:37,768 INFO L158 Benchmark]: Toolchain (without parser) took 865719.49ms. Allocated memory was 243.3MB in the beginning and 1.1GB in the end (delta: 841.0MB). Free memory was 189.4MB in the beginning and 474.5MB in the end (delta: -285.1MB). Peak memory consumption was 688.3MB. Max. memory is 8.0GB. [2023-12-26 15:35:37,768 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 15:35:37,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.36ms. Allocated memory is still 243.3MB. Free memory was 188.9MB in the beginning and 132.2MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-12-26 15:35:37,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.23ms. Allocated memory is still 243.3MB. Free memory was 132.2MB in the beginning and 197.0MB in the end (delta: -64.7MB). Peak memory consumption was 13.8MB. Max. memory is 8.0GB. [2023-12-26 15:35:37,769 INFO L158 Benchmark]: Boogie Preprocessor took 115.89ms. Allocated memory is still 243.3MB. Free memory was 197.0MB in the beginning and 180.7MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-26 15:35:37,769 INFO L158 Benchmark]: RCFGBuilder took 1535.49ms. Allocated memory was 243.3MB in the beginning and 358.6MB in the end (delta: 115.3MB). Free memory was 180.7MB in the beginning and 284.0MB in the end (delta: -103.3MB). Peak memory consumption was 139.5MB. Max. memory is 8.0GB. [2023-12-26 15:35:37,770 INFO L158 Benchmark]: TraceAbstraction took 863408.91ms. Allocated memory was 358.6MB in the beginning and 1.1GB in the end (delta: 725.6MB). Free memory was 283.5MB in the beginning and 474.5MB in the end (delta: -191.0MB). Peak memory consumption was 665.6MB. Max. memory is 8.0GB. [2023-12-26 15:35:37,771 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 178.3MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 502.36ms. Allocated memory is still 243.3MB. Free memory was 188.9MB in the beginning and 132.2MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 152.23ms. Allocated memory is still 243.3MB. Free memory was 132.2MB in the beginning and 197.0MB in the end (delta: -64.7MB). Peak memory consumption was 13.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 115.89ms. Allocated memory is still 243.3MB. Free memory was 197.0MB in the beginning and 180.7MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * RCFGBuilder took 1535.49ms. Allocated memory was 243.3MB in the beginning and 358.6MB in the end (delta: 115.3MB). Free memory was 180.7MB in the beginning and 284.0MB in the end (delta: -103.3MB). Peak memory consumption was 139.5MB. Max. memory is 8.0GB. * TraceAbstraction took 863408.91ms. Allocated memory was 358.6MB in the beginning and 1.1GB in the end (delta: 725.6MB). Free memory was 283.5MB in the beginning and 474.5MB in the end (delta: -191.0MB). Peak memory consumption was 665.6MB. 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 ∧-12-3-4-4-5-4-5-3-5-3-5-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-27-4-5-4-5-4-5-3-5-3-5-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 863.4s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 21.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 12.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 12.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 6 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 123.3s 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: 0.5s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 158.9s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 20 QuantifiedInterpolants, 222956 SizeOfPredicates, 399 NumberOfNonLiveVariables, 4539 ConjunctsInSsa, 309 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