/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-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 11:12:42,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 11:12:42,581 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 11:12:42,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 11:12:42,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 11:12:42,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 11:12:42,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 11:12:42,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 11:12:42,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 11:12:42,612 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 11:12:42,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 11:12:42,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 11:12:42,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 11:12:42,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 11:12:42,614 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 11:12:42,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 11:12:42,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 11:12:42,615 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 11:12:42,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 11:12:42,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 11:12:42,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 11:12:42,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 11:12:42,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 11:12:42,616 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 11:12:42,617 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 11:12:42,617 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 11:12:42,617 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 11:12:42,617 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 11:12:42,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 11:12:42,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 11:12:42,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 11:12:42,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 11:12:42,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 11:12:42,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 11:12:42,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 11:12:42,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 11:12:42,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 11:12:42,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 11:12:42,619 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 11:12:42,619 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 11:12:42,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 11:12:42,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 11:12:42,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 11:12:42,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 11:12:42,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 11:12:42,620 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 11:12:42,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 11:12:42,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 11:12:42,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 11:12:42,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 11:12:42,830 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 11:12:42,830 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 11:12:42,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2023-12-22 11:12:43,869 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 11:12:44,288 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 11:12:44,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2023-12-22 11:12:44,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0913ce3b5/2c61c108a5c740c3b7d7a036eeccd00b/FLAGbfd61c815 [2023-12-22 11:12:44,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0913ce3b5/2c61c108a5c740c3b7d7a036eeccd00b [2023-12-22 11:12:44,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 11:12:44,340 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 11:12:44,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 11:12:44,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 11:12:44,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 11:12:44,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:44" (1/1) ... [2023-12-22 11:12:44,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f3311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:44, skipping insertion in model container [2023-12-22 11:12:44,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:44" (1/1) ... [2023-12-22 11:12:44,448 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 11:12:44,622 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13.c[8099,8112] [2023-12-22 11:12:45,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 11:12:45,290 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 11:12:45,309 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13.c[8099,8112] [2023-12-22 11:12:45,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 11:12:45,777 INFO L206 MainTranslator]: Completed translation [2023-12-22 11:12:45,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45 WrapperNode [2023-12-22 11:12:45,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 11:12:45,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 11:12:45,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 11:12:45,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 11:12:45,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:45,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:45,965 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5582 [2023-12-22 11:12:45,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 11:12:45,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 11:12:45,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 11:12:45,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 11:12:45,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:45,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:45,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:46,062 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]. [2023-12-22 11:12:46,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:46,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:46,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:46,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:46,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:46,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:46,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 11:12:46,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 11:12:46,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 11:12:46,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 11:12:46,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (1/1) ... [2023-12-22 11:12:46,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 11:12:46,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 11:12:46,373 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) [2023-12-22 11:12:46,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 11:12:46,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 11:12:46,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 11:12:46,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 11:12:46,405 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 [2023-12-22 11:12:46,482 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 11:12:46,483 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 11:13:33,716 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 11:13:33,802 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 11:13:33,802 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 11:13:33,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:33 BoogieIcfgContainer [2023-12-22 11:13:33,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 11:13:33,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 11:13:33,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 11:13:33,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 11:13:33,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:12:44" (1/3) ... [2023-12-22 11:13:33,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:13:33, skipping insertion in model container [2023-12-22 11:13:33,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:45" (2/3) ... [2023-12-22 11:13:33,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:13:33, skipping insertion in model container [2023-12-22 11:13:33,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:13:33" (3/3) ... [2023-12-22 11:13:33,809 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13.c [2023-12-22 11:13:33,821 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 11:13:33,821 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 11:13:33,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 11:13:33,885 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;@153622e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 11:13:33,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 11:13:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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) [2023-12-22 11:13:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-22 11:13:33,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:13:33,901 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:13:33,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:13:33,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:13:33,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1341323251, now seen corresponding path program 1 times [2023-12-22 11:13:33,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:13:33,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54065766] [2023-12-22 11:13:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:13:33,918 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 [2023-12-22 11:13:33,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:13:33,921 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) [2023-12-22 11:13:33,924 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 [2023-12-22 11:13:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:13:34,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 11:13:34,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:13:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:13:34,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:13:34,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:13:34,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54065766] [2023-12-22 11:13:34,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54065766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:13:34,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:13:34,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:13:34,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748033158] [2023-12-22 11:13:34,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:13:34,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 11:13:34,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:13:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 11:13:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 11:13:34,058 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2023-12-22 11:13:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:13:34,151 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-22 11:13:34,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 11:13:34,154 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 56 [2023-12-22 11:13:34,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:13:34,171 INFO L225 Difference]: With dead ends: 2071 [2023-12-22 11:13:34,171 INFO L226 Difference]: Without dead ends: 1034 [2023-12-22 11:13:34,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 11:13:34,180 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 11:13:34,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 11:13:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-22 11:13:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-22 11:13:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 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) [2023-12-22 11:13:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-22 11:13:34,252 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 56 [2023-12-22 11:13:34,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:13:34,252 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-22 11:13:34,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2023-12-22 11:13:34,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-22 11:13:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-22 11:13:34,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:13:34,255 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:13:34,260 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 [2023-12-22 11:13:34,458 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 [2023-12-22 11:13:34,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:13:34,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:13:34,460 INFO L85 PathProgramCache]: Analyzing trace with hash 512037456, now seen corresponding path program 1 times [2023-12-22 11:13:34,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:13:34,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548313308] [2023-12-22 11:13:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:13:34,464 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 [2023-12-22 11:13:34,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:13:34,466 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) [2023-12-22 11:13:34,502 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 [2023-12-22 11:13:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:13:34,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:13:34,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:13:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:13:34,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:13:34,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:13:34,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548313308] [2023-12-22 11:13:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548313308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:13:34,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:13:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:13:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388787392] [2023-12-22 11:13:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:13:34,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:13:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:13:34,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:13:34,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:13:34,620 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 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) [2023-12-22 11:14:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:14:28,831 INFO L93 Difference]: Finished difference Result 2996 states and 5467 transitions. [2023-12-22 11:14:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:14:28,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 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 56 [2023-12-22 11:14:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:14:28,837 INFO L225 Difference]: With dead ends: 2996 [2023-12-22 11:14:28,837 INFO L226 Difference]: Without dead ends: 1963 [2023-12-22 11:14:28,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:14:28,839 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1098 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.0s IncrementalHoareTripleChecker+Time [2023-12-22 11:14:28,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 945 Invalid, 3179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [545 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 54.0s Time] [2023-12-22 11:14:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2023-12-22 11:14:28,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1950. [2023-12-22 11:14:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1949 states have (on average 1.6541816316059517) internal successors, (3224), 1949 states have internal predecessors, (3224), 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) [2023-12-22 11:14:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3224 transitions. [2023-12-22 11:14:28,864 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3224 transitions. Word has length 56 [2023-12-22 11:14:28,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:14:28,865 INFO L495 AbstractCegarLoop]: Abstraction has 1950 states and 3224 transitions. [2023-12-22 11:14:28,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 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) [2023-12-22 11:14:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3224 transitions. [2023-12-22 11:14:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-22 11:14:28,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:14:28,866 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:14:28,868 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 [2023-12-22 11:14:29,068 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 [2023-12-22 11:14:29,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:14:29,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:14:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1897884470, now seen corresponding path program 1 times [2023-12-22 11:14:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:14:29,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423319922] [2023-12-22 11:14:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:14:29,071 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 [2023-12-22 11:14:29,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:14:29,077 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) [2023-12-22 11:14:29,088 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 [2023-12-22 11:14:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:14:29,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:14:29,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:14:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:14:29,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:14:29,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:14:29,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423319922] [2023-12-22 11:14:29,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423319922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:14:29,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:14:29,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:14:29,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214115674] [2023-12-22 11:14:29,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:14:29,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:14:29,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:14:29,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:14:29,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:14:29,303 INFO L87 Difference]: Start difference. First operand 1950 states and 3224 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2023-12-22 11:15:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:15:29,888 INFO L93 Difference]: Finished difference Result 5504 states and 9184 transitions. [2023-12-22 11:15:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:15:29,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 127 [2023-12-22 11:15:29,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:15:29,909 INFO L225 Difference]: With dead ends: 5504 [2023-12-22 11:15:29,909 INFO L226 Difference]: Without dead ends: 3555 [2023-12-22 11:15:29,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:15:29,912 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 776 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.4s IncrementalHoareTripleChecker+Time [2023-12-22 11:15:29,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1171 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 2683 Invalid, 0 Unknown, 0 Unchecked, 60.4s Time] [2023-12-22 11:15:29,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2023-12-22 11:15:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3547. [2023-12-22 11:15:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 3546 states have (on average 1.4357021996615906) internal successors, (5091), 3546 states have internal predecessors, (5091), 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) [2023-12-22 11:15:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 5091 transitions. [2023-12-22 11:15:29,983 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 5091 transitions. Word has length 127 [2023-12-22 11:15:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:15:29,984 INFO L495 AbstractCegarLoop]: Abstraction has 3547 states and 5091 transitions. [2023-12-22 11:15:29,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2023-12-22 11:15:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 5091 transitions. [2023-12-22 11:15:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-22 11:15:29,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:15:29,986 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:15:29,999 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 [2023-12-22 11:15:30,190 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 [2023-12-22 11:15:30,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:15:30,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:15:30,192 INFO L85 PathProgramCache]: Analyzing trace with hash -792051691, now seen corresponding path program 1 times [2023-12-22 11:15:30,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:15:30,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347432640] [2023-12-22 11:15:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:15:30,194 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 [2023-12-22 11:15:30,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:15:30,210 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) [2023-12-22 11:15:30,223 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 [2023-12-22 11:15:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:15:30,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:15:30,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:15:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:15:30,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:15:30,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:15:30,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347432640] [2023-12-22 11:15:30,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347432640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:15:30,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:15:30,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:15:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657537490] [2023-12-22 11:15:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:15:30,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:15:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:15:30,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:15:30,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:15:30,502 INFO L87 Difference]: Start difference. First operand 3547 states and 5091 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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) [2023-12-22 11:16:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:16:19,718 INFO L93 Difference]: Finished difference Result 7885 states and 11081 transitions. [2023-12-22 11:16:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:16:19,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 157 [2023-12-22 11:16:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:16:19,742 INFO L225 Difference]: With dead ends: 7885 [2023-12-22 11:16:19,742 INFO L226 Difference]: Without dead ends: 4339 [2023-12-22 11:16:19,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:16:19,749 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 694 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.1s IncrementalHoareTripleChecker+Time [2023-12-22 11:16:19,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1176 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 49.1s Time] [2023-12-22 11:16:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2023-12-22 11:16:19,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 4334. [2023-12-22 11:16:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 1.368105238864528) internal successors, (5928), 4333 states have internal predecessors, (5928), 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) [2023-12-22 11:16:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 5928 transitions. [2023-12-22 11:16:19,814 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 5928 transitions. Word has length 157 [2023-12-22 11:16:19,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:16:19,815 INFO L495 AbstractCegarLoop]: Abstraction has 4334 states and 5928 transitions. [2023-12-22 11:16:19,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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) [2023-12-22 11:16:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 5928 transitions. [2023-12-22 11:16:19,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-22 11:16:19,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:16:19,818 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:16:19,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-22 11:16:20,021 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 [2023-12-22 11:16:20,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:16:20,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:16:20,022 INFO L85 PathProgramCache]: Analyzing trace with hash -769424978, now seen corresponding path program 1 times [2023-12-22 11:16:20,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:16:20,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973491868] [2023-12-22 11:16:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:16:20,024 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 [2023-12-22 11:16:20,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:16:20,026 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) [2023-12-22 11:16:20,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 11:16:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:16:20,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 11:16:20,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:16:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:16:20,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:16:20,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:16:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973491868] [2023-12-22 11:16:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973491868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:16:20,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:16:20,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:16:20,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365251611] [2023-12-22 11:16:20,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:16:20,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:16:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:16:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:16:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:16:20,502 INFO L87 Difference]: Start difference. First operand 4334 states and 5928 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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) [2023-12-22 11:17:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:17:08,277 INFO L93 Difference]: Finished difference Result 8667 states and 11855 transitions. [2023-12-22 11:17:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:17:08,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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 167 [2023-12-22 11:17:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:17:08,304 INFO L225 Difference]: With dead ends: 8667 [2023-12-22 11:17:08,304 INFO L226 Difference]: Without dead ends: 4334 [2023-12-22 11:17:08,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:17:08,313 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.6s IncrementalHoareTripleChecker+Time [2023-12-22 11:17:08,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1217 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 47.6s Time] [2023-12-22 11:17:08,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2023-12-22 11:17:08,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4334. [2023-12-22 11:17:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 1.3588737595199631) internal successors, (5888), 4333 states have internal predecessors, (5888), 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) [2023-12-22 11:17:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 5888 transitions. [2023-12-22 11:17:08,361 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 5888 transitions. Word has length 167 [2023-12-22 11:17:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:17:08,361 INFO L495 AbstractCegarLoop]: Abstraction has 4334 states and 5888 transitions. [2023-12-22 11:17:08,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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) [2023-12-22 11:17:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 5888 transitions. [2023-12-22 11:17:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-22 11:17:08,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:17:08,363 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2023-12-22 11:17:08,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 11:17:08,565 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 [2023-12-22 11:17:08,566 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:17:08,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:17:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash -846158056, now seen corresponding path program 1 times [2023-12-22 11:17:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:17:08,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592033578] [2023-12-22 11:17:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:17:08,567 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 [2023-12-22 11:17:08,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:17:08,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 11:17:08,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 11:17:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:17:08,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 11:17:08,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:17:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:17:10,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 11:17:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:17:25,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:17:25,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592033578] [2023-12-22 11:17:25,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592033578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 11:17:25,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 11:17:25,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 11:17:25,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235635852] [2023-12-22 11:17:25,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 11:17:25,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 11:17:25,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:17:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 11:17:25,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 11:17:25,802 INFO L87 Difference]: Start difference. First operand 4334 states and 5888 transitions. Second operand has 7 states, 7 states have (on average 50.857142857142854) internal successors, (356), 6 states have internal predecessors, (356), 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) [2023-12-22 11:17:49,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:19:12,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:20:44,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:21:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:21:11,929 INFO L93 Difference]: Finished difference Result 14285 states and 22263 transitions. [2023-12-22 11:21:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 11:21:11,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 50.857142857142854) internal successors, (356), 6 states have internal predecessors, (356), 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 181 [2023-12-22 11:21:11,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:21:11,950 INFO L225 Difference]: With dead ends: 14285 [2023-12-22 11:21:11,950 INFO L226 Difference]: Without dead ends: 8310 [2023-12-22 11:21:11,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-22 11:21:11,955 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 6816 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 10983 mSolverCounterSat, 3148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 180.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6816 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 14131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3148 IncrementalHoareTripleChecker+Valid, 10983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 224.6s IncrementalHoareTripleChecker+Time [2023-12-22 11:21:11,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6816 Valid, 1383 Invalid, 14131 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3148 Valid, 10983 Invalid, 0 Unknown, 0 Unchecked, 224.6s Time] [2023-12-22 11:21:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2023-12-22 11:21:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 5827. [2023-12-22 11:21:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 5826 states have (on average 1.2572948849982835) internal successors, (7325), 5826 states have internal predecessors, (7325), 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) [2023-12-22 11:21:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 7325 transitions. [2023-12-22 11:21:12,039 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 7325 transitions. Word has length 181 [2023-12-22 11:21:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:21:12,040 INFO L495 AbstractCegarLoop]: Abstraction has 5827 states and 7325 transitions. [2023-12-22 11:21:12,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.857142857142854) internal successors, (356), 6 states have internal predecessors, (356), 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) [2023-12-22 11:21:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 7325 transitions. [2023-12-22 11:21:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-22 11:21:12,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:21:12,042 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:21:12,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 11:21:12,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 11:21:12,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:21:12,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:21:12,251 INFO L85 PathProgramCache]: Analyzing trace with hash 396350844, now seen corresponding path program 1 times [2023-12-22 11:21:12,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:21:12,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580575769] [2023-12-22 11:21:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:21:12,252 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 [2023-12-22 11:21:12,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:21:12,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 11:21:12,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 11:21:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:21:12,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:21:12,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:21:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:21:12,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:21:12,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:21:12,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580575769] [2023-12-22 11:21:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580575769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:21:12,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:21:12,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 11:21:12,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440653779] [2023-12-22 11:21:12,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:21:12,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:21:12,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:21:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:21:12,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:21:12,514 INFO L87 Difference]: Start difference. First operand 5827 states and 7325 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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) [2023-12-22 11:22:15,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:22:15,639 INFO L93 Difference]: Finished difference Result 14056 states and 18365 transitions. [2023-12-22 11:22:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:22:15,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 255 [2023-12-22 11:22:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:22:15,670 INFO L225 Difference]: With dead ends: 14056 [2023-12-22 11:22:15,670 INFO L226 Difference]: Without dead ends: 9017 [2023-12-22 11:22:15,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:22:15,676 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 765 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.9s IncrementalHoareTripleChecker+Time [2023-12-22 11:22:15,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 2014 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 62.9s Time] [2023-12-22 11:22:15,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2023-12-22 11:22:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 8996. [2023-12-22 11:22:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8996 states, 8995 states have (on average 1.2058921623123957) internal successors, (10847), 8995 states have internal predecessors, (10847), 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) [2023-12-22 11:22:15,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8996 states to 8996 states and 10847 transitions. [2023-12-22 11:22:15,813 INFO L78 Accepts]: Start accepts. Automaton has 8996 states and 10847 transitions. Word has length 255 [2023-12-22 11:22:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:22:15,814 INFO L495 AbstractCegarLoop]: Abstraction has 8996 states and 10847 transitions. [2023-12-22 11:22:15,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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) [2023-12-22 11:22:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 8996 states and 10847 transitions. [2023-12-22 11:22:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-12-22 11:22:15,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:22:15,818 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:22:15,825 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 (8)] Forceful destruction successful, exit code 0 [2023-12-22 11:22:16,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 11:22:16,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:22:16,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:22:16,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1885960847, now seen corresponding path program 1 times [2023-12-22 11:22:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:22:16,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279617771] [2023-12-22 11:22:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:22:16,023 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 [2023-12-22 11:22:16,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:22:16,024 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-12-22 11:22:16,026 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 (9)] Waiting until timeout for monitored process [2023-12-22 11:22:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:22:16,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 11:22:16,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:22:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 88 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-22 11:22:16,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 11:22:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 88 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-22 11:22:17,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:22:17,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279617771] [2023-12-22 11:22:17,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279617771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 11:22:17,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 11:22:17,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-22 11:22:17,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315407201] [2023-12-22 11:22:17,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 11:22:17,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 11:22:17,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:22:17,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 11:22:17,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-22 11:22:17,756 INFO L87 Difference]: Start difference. First operand 8996 states and 10847 transitions. Second operand has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 5 states have internal predecessors, (475), 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) [2023-12-22 11:23:01,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:24:40,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:24:52,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:25:16,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:26:24,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-22 11:27:20,649 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 11:27:20,650 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 [2023-12-22 11:27:21,655 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 (9)] Ended with exit code 0 [2023-12-22 11:27:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 11:27:21,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-22 11:27:21,664 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 5673 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 8628 mSolverCounterSat, 1983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 289.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5673 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 10611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1983 IncrementalHoareTripleChecker+Valid, 8628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 303.4s IncrementalHoareTripleChecker+Time [2023-12-22 11:27:21,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5673 Valid, 622 Invalid, 10611 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1983 Valid, 8628 Invalid, 0 Unknown, 0 Unchecked, 303.4s Time] [2023-12-22 11:27:21,665 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 11:27:21,666 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (8996states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (23535 states constructed, input type IntersectNwa). [2023-12-22 11:27:21,669 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:27:21,670 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 11:27:21,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:27:21 BoogieIcfgContainer [2023-12-22 11:27:21,671 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 11:27:21,674 INFO L158 Benchmark]: Toolchain (without parser) took 877332.17ms. Allocated memory was 216.0MB in the beginning and 499.1MB in the end (delta: 283.1MB). Free memory was 144.3MB in the beginning and 240.0MB in the end (delta: -95.7MB). Peak memory consumption was 366.7MB. Max. memory is 8.0GB. [2023-12-22 11:27:21,674 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 216.0MB. Free memory is still 165.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 11:27:21,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1436.11ms. Allocated memory was 216.0MB in the beginning and 284.2MB in the end (delta: 68.2MB). Free memory was 144.2MB in the beginning and 185.0MB in the end (delta: -40.8MB). Peak memory consumption was 112.3MB. Max. memory is 8.0GB. [2023-12-22 11:27:21,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 186.20ms. Allocated memory is still 284.2MB. Free memory was 185.0MB in the beginning and 140.4MB in the end (delta: 44.6MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-12-22 11:27:21,677 INFO L158 Benchmark]: Boogie Preprocessor took 384.64ms. Allocated memory is still 284.2MB. Free memory was 140.4MB in the beginning and 179.4MB in the end (delta: -38.9MB). Peak memory consumption was 80.6MB. Max. memory is 8.0GB. [2023-12-22 11:27:21,677 INFO L158 Benchmark]: RCFGBuilder took 47452.05ms. Allocated memory was 284.2MB in the beginning and 499.1MB in the end (delta: 215.0MB). Free memory was 178.8MB in the beginning and 228.4MB in the end (delta: -49.5MB). Peak memory consumption was 228.3MB. Max. memory is 8.0GB. [2023-12-22 11:27:21,678 INFO L158 Benchmark]: TraceAbstraction took 827867.22ms. Allocated memory is still 499.1MB. Free memory was 227.3MB in the beginning and 240.0MB in the end (delta: -12.7MB). Peak memory consumption was 165.6MB. Max. memory is 8.0GB. [2023-12-22 11:27:21,680 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 216.0MB. Free memory is still 165.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1436.11ms. Allocated memory was 216.0MB in the beginning and 284.2MB in the end (delta: 68.2MB). Free memory was 144.2MB in the beginning and 185.0MB in the end (delta: -40.8MB). Peak memory consumption was 112.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 186.20ms. Allocated memory is still 284.2MB. Free memory was 185.0MB in the beginning and 140.4MB in the end (delta: 44.6MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 384.64ms. Allocated memory is still 284.2MB. Free memory was 140.4MB in the beginning and 179.4MB in the end (delta: -38.9MB). Peak memory consumption was 80.6MB. Max. memory is 8.0GB. * RCFGBuilder took 47452.05ms. Allocated memory was 284.2MB in the beginning and 499.1MB in the end (delta: 215.0MB). Free memory was 178.8MB in the beginning and 228.4MB in the end (delta: -49.5MB). Peak memory consumption was 228.3MB. Max. memory is 8.0GB. * TraceAbstraction took 827867.22ms. Allocated memory is still 499.1MB. Free memory was 227.3MB in the beginning and 240.0MB in the end (delta: -12.7MB). Peak memory consumption was 165.6MB. 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: 193]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 193). Cancelled while NwaCegarLoop was constructing difference of abstraction (8996states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (23535 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 827.8s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 805.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16500 SdHoareTripleChecker+Valid, 801.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16500 mSDsluCounter, 10404 SdHoareTripleChecker+Invalid, 698.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1902 mSDsCounter, 7032 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32616 IncrementalHoareTripleChecker+Invalid, 39648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7032 mSolverCounterUnsat, 8502 mSDtfsCounter, 32616 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1866 GetRequests, 1844 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8996occurred in iteration=7, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 2530 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 19.8s InterpolantComputationTime, 1343 NumberOfCodeBlocks, 1343 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1858 ConstructedInterpolants, 0 QuantifiedInterpolants, 12357 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1708 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 1062/1346 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