/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/recursive-simple/fibo_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:44:28,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:44:28,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:44:28,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:44:28,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:44:28,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:44:28,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:44:28,568 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:44:28,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:44:28,571 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:44:28,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:44:28,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:44:28,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:44:28,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:44:28,573 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:44:28,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:44:28,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:44:28,574 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:44:28,574 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:44:28,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:44:28,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:44:28,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:44:28,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:44:28,576 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:44:28,576 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:44:28,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:44:28,576 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:44:28,576 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:44:28,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:44:28,577 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:44:28,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:44:28,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:44:28,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:44:28,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:44:28,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:44:28,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:44:28,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:44:28,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:44:28,578 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:44:28,578 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:44:28,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:44:28,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:44:28,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:44:28,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:44:28,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:44:28,579 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:44:28,579 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:44:28,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:44:28,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:44:28,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:44:28,809 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:44:28,810 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:44:28,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2023-12-16 17:44:29,990 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:44:30,121 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:44:30,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2023-12-16 17:44:30,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616def382/5c2d1ae545454781a8dc7bf7c538d519/FLAG3c7379586 [2023-12-16 17:44:30,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616def382/5c2d1ae545454781a8dc7bf7c538d519 [2023-12-16 17:44:30,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:44:30,141 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:44:30,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:44:30,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:44:30,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:44:30,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c942cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30, skipping insertion in model container [2023-12-16 17:44:30,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:44:30,276 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_25-1.c[746,759] [2023-12-16 17:44:30,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:44:30,287 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:44:30,299 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_25-1.c[746,759] [2023-12-16 17:44:30,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:44:30,309 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:44:30,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30 WrapperNode [2023-12-16 17:44:30,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:44:30,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:44:30,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:44:30,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:44:30,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,343 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-16 17:44:30,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:44:30,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:44:30,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:44:30,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:44:30,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,372 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 17:44:30,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:44:30,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:44:30,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:44:30,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:44:30,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (1/1) ... [2023-12-16 17:44:30,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:44:30,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:44:30,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 17:44:30,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 17:44:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:44:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:44:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:44:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:44:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-12-16 17:44:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-12-16 17:44:30,543 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:44:30,546 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:44:30,648 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:44:30,684 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:44:30,684 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:44:30,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:44:30 BoogieIcfgContainer [2023-12-16 17:44:30,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:44:30,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:44:30,687 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:44:30,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:44:30,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:44:30" (1/3) ... [2023-12-16 17:44:30,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b8703c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:44:30, skipping insertion in model container [2023-12-16 17:44:30,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:44:30" (2/3) ... [2023-12-16 17:44:30,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b8703c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:44:30, skipping insertion in model container [2023-12-16 17:44:30,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:44:30" (3/3) ... [2023-12-16 17:44:30,692 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_25-1.c [2023-12-16 17:44:30,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:44:30,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:44:30,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:44:30,752 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;@5b8e867b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:44:30,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:44:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:44:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 17:44:30,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:30,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:30,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:30,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:30,767 INFO L85 PathProgramCache]: Analyzing trace with hash -735234106, now seen corresponding path program 1 times [2023-12-16 17:44:30,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:30,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778909489] [2023-12-16 17:44:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:44:30,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:30,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:30,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:30,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 17:44:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:30,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:44:30,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:44:30,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:44:30,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:30,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778909489] [2023-12-16 17:44:30,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778909489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:44:30,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:44:30,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:44:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463900010] [2023-12-16 17:44:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:44:30,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:44:30,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:44:30,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:44:30,921 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:44:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:30,972 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2023-12-16 17:44:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:44:30,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-16 17:44:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:30,978 INFO L225 Difference]: With dead ends: 24 [2023-12-16 17:44:30,979 INFO L226 Difference]: Without dead ends: 16 [2023-12-16 17:44:30,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:44:30,982 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:30,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:44:30,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-16 17:44:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-16 17:44:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:44:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-16 17:44:31,006 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2023-12-16 17:44:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:31,006 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-16 17:44:31,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:44:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-16 17:44:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 17:44:31,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:31,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:31,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:31,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:31,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:31,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:31,211 INFO L85 PathProgramCache]: Analyzing trace with hash -574078710, now seen corresponding path program 1 times [2023-12-16 17:44:31,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:31,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562713281] [2023-12-16 17:44:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:44:31,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:31,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:31,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:31,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 17:44:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:31,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:44:31,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:44:31,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:44:31,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:31,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562713281] [2023-12-16 17:44:31,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562713281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:44:31,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:44:31,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:44:31,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754696954] [2023-12-16 17:44:31,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:44:31,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:44:31,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:31,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:44:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:44:31,320 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:44:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:31,368 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2023-12-16 17:44:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:44:31,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-16 17:44:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:31,369 INFO L225 Difference]: With dead ends: 22 [2023-12-16 17:44:31,369 INFO L226 Difference]: Without dead ends: 18 [2023-12-16 17:44:31,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:44:31,370 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:31,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:44:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-16 17:44:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2023-12-16 17:44:31,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:44:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-16 17:44:31,375 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2023-12-16 17:44:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:31,375 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-16 17:44:31,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:44:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-16 17:44:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 17:44:31,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:31,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:31,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:31,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:31,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:31,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1482643974, now seen corresponding path program 1 times [2023-12-16 17:44:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:31,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272738256] [2023-12-16 17:44:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:44:31,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:31,584 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:31,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:44:31,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:31,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 17:44:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:44:31,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 17:44:31,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:31,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272738256] [2023-12-16 17:44:31,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272738256] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:31,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:31,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-16 17:44:31,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117295868] [2023-12-16 17:44:31,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:31,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 17:44:31,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 17:44:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 17:44:31,894 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:44:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:31,993 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2023-12-16 17:44:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:44:31,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 21 [2023-12-16 17:44:31,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:31,994 INFO L225 Difference]: With dead ends: 26 [2023-12-16 17:44:31,995 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 17:44:31,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:44:31,995 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:31,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 36 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:44:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 17:44:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-12-16 17:44:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-16 17:44:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2023-12-16 17:44:32,000 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 21 [2023-12-16 17:44:32,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:32,001 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2023-12-16 17:44:32,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:44:32,001 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2023-12-16 17:44:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 17:44:32,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:32,002 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:32,011 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 [2023-12-16 17:44:32,203 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 [2023-12-16 17:44:32,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:32,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:32,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1283424576, now seen corresponding path program 1 times [2023-12-16 17:44:32,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:32,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669608525] [2023-12-16 17:44:32,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:44:32,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:32,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:32,206 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) [2023-12-16 17:44:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:32,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:44:32,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:32,233 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 [2023-12-16 17:44:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 17:44:32,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 17:44:32,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:32,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669608525] [2023-12-16 17:44:32,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669608525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:32,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:32,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-16 17:44:32,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658274206] [2023-12-16 17:44:32,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:32,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 17:44:32,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 17:44:32,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 17:44:32,426 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:44:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:32,498 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2023-12-16 17:44:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:44:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 22 [2023-12-16 17:44:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:32,500 INFO L225 Difference]: With dead ends: 44 [2023-12-16 17:44:32,500 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 17:44:32,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:44:32,502 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:32,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:44:32,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 17:44:32,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-16 17:44:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2023-12-16 17:44:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 41 transitions. [2023-12-16 17:44:32,511 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 41 transitions. Word has length 22 [2023-12-16 17:44:32,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:32,511 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 41 transitions. [2023-12-16 17:44:32,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 17:44:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 41 transitions. [2023-12-16 17:44:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 17:44:32,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:32,513 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:32,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:32,715 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 [2023-12-16 17:44:32,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:32,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash -129465146, now seen corresponding path program 2 times [2023-12-16 17:44:32,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:32,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804882070] [2023-12-16 17:44:32,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:44:32,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:32,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:32,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:32,721 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 [2023-12-16 17:44:32,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:44:32,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:32,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:44:32,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 17:44:32,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-16 17:44:33,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804882070] [2023-12-16 17:44:33,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804882070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:33,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:33,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-16 17:44:33,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369426627] [2023-12-16 17:44:33,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:33,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 17:44:33,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 17:44:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:44:33,114 INFO L87 Difference]: Start difference. First operand 26 states and 41 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-16 17:44:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:33,307 INFO L93 Difference]: Finished difference Result 59 states and 109 transitions. [2023-12-16 17:44:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:44:33,308 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) Word has length 33 [2023-12-16 17:44:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:33,309 INFO L225 Difference]: With dead ends: 59 [2023-12-16 17:44:33,309 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 17:44:33,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:44:33,310 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:33,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 46 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:44:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 17:44:33,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2023-12-16 17:44:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-16 17:44:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2023-12-16 17:44:33,315 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 33 [2023-12-16 17:44:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:33,316 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2023-12-16 17:44:33,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-16 17:44:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2023-12-16 17:44:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 17:44:33,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:33,317 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:33,321 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 [2023-12-16 17:44:33,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:33,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:33,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:33,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1440927676, now seen corresponding path program 2 times [2023-12-16 17:44:33,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:33,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827039088] [2023-12-16 17:44:33,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:44:33,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:33,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:33,523 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) [2023-12-16 17:44:33,528 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 [2023-12-16 17:44:33,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:44:33,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:33,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:44:33,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 17:44:33,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-16 17:44:33,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:33,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827039088] [2023-12-16 17:44:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827039088] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:33,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:33,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-16 17:44:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385049667] [2023-12-16 17:44:33,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:33,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 17:44:33,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 17:44:33,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:44:33,786 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-16 17:44:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:33,887 INFO L93 Difference]: Finished difference Result 66 states and 114 transitions. [2023-12-16 17:44:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:44:33,888 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) Word has length 35 [2023-12-16 17:44:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:33,889 INFO L225 Difference]: With dead ends: 66 [2023-12-16 17:44:33,889 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 17:44:33,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:44:33,890 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:33,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 57 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:44:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 17:44:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-12-16 17:44:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2023-12-16 17:44:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2023-12-16 17:44:33,911 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 53 transitions. Word has length 35 [2023-12-16 17:44:33,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:33,911 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 53 transitions. [2023-12-16 17:44:33,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-16 17:44:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 53 transitions. [2023-12-16 17:44:33,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 17:44:33,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:33,913 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:33,923 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 [2023-12-16 17:44:34,115 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 [2023-12-16 17:44:34,115 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:34,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1149036726, now seen corresponding path program 3 times [2023-12-16 17:44:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:34,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500829871] [2023-12-16 17:44:34,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:44:34,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:34,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:34,117 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) [2023-12-16 17:44:34,142 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 [2023-12-16 17:44:34,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 17:44:34,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:34,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 17:44:34,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 180 proven. 5 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-12-16 17:44:34,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 136 proven. 15 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-12-16 17:44:34,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500829871] [2023-12-16 17:44:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500829871] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:34,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-16 17:44:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810388617] [2023-12-16 17:44:34,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:34,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:44:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:44:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:44:34,539 INFO L87 Difference]: Start difference. First operand 36 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-16 17:44:34,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:34,652 INFO L93 Difference]: Finished difference Result 65 states and 97 transitions. [2023-12-16 17:44:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:44:34,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 82 [2023-12-16 17:44:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:34,653 INFO L225 Difference]: With dead ends: 65 [2023-12-16 17:44:34,653 INFO L226 Difference]: Without dead ends: 31 [2023-12-16 17:44:34,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:44:34,655 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:34,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 48 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:44:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-16 17:44:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-16 17:44:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-16 17:44:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-16 17:44:34,659 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 82 [2023-12-16 17:44:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:34,659 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-16 17:44:34,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-16 17:44:34,660 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-16 17:44:34,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 17:44:34,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:34,660 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:34,677 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 [2023-12-16 17:44:34,863 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 [2023-12-16 17:44:34,863 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:34,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:34,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1163688374, now seen corresponding path program 4 times [2023-12-16 17:44:34,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987942679] [2023-12-16 17:44:34,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:44:34,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:34,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:34,865 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) [2023-12-16 17:44:34,888 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 [2023-12-16 17:44:34,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:44:34,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:34,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:44:34,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 154 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-16 17:44:34,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 169 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-16 17:44:35,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987942679] [2023-12-16 17:44:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987942679] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:35,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:35,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 13 [2023-12-16 17:44:35,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3098741] [2023-12-16 17:44:35,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:35,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 17:44:35,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:35,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 17:44:35,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-16 17:44:35,266 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-16 17:44:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:35,391 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2023-12-16 17:44:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:44:35,392 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) Word has length 86 [2023-12-16 17:44:35,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:35,392 INFO L225 Difference]: With dead ends: 71 [2023-12-16 17:44:35,392 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 17:44:35,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:44:35,393 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:35,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 74 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:44:35,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 17:44:35,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-12-16 17:44:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-16 17:44:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-12-16 17:44:35,397 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 86 [2023-12-16 17:44:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:35,398 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-12-16 17:44:35,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-16 17:44:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-12-16 17:44:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-16 17:44:35,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:35,399 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:35,404 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:35,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:35,602 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:35,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1652042176, now seen corresponding path program 5 times [2023-12-16 17:44:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:35,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700333804] [2023-12-16 17:44:35,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:44:35,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:35,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:35,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:35,605 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 (10)] Waiting until timeout for monitored process [2023-12-16 17:44:35,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-12-16 17:44:35,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:35,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:44:35,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 310 proven. 265 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-12-16 17:44:35,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 321 proven. 309 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-16 17:44:37,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:37,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700333804] [2023-12-16 17:44:37,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700333804] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:37,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:37,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 23 [2023-12-16 17:44:37,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754683050] [2023-12-16 17:44:37,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:37,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 17:44:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:37,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 17:44:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:44:37,304 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2023-12-16 17:44:37,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:37,840 INFO L93 Difference]: Finished difference Result 98 states and 163 transitions. [2023-12-16 17:44:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 17:44:37,841 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) Word has length 136 [2023-12-16 17:44:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:37,845 INFO L225 Difference]: With dead ends: 98 [2023-12-16 17:44:37,845 INFO L226 Difference]: Without dead ends: 61 [2023-12-16 17:44:37,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 242 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930 [2023-12-16 17:44:37,847 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 92 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:37,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 133 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:44:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-16 17:44:37,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2023-12-16 17:44:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (29), 13 states have call predecessors, (29), 10 states have call successors, (29) [2023-12-16 17:44:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2023-12-16 17:44:37,872 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 136 [2023-12-16 17:44:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:37,872 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2023-12-16 17:44:37,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2023-12-16 17:44:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-12-16 17:44:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 17:44:37,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:37,877 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:37,880 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 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:38,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:38,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1711998528, now seen corresponding path program 6 times [2023-12-16 17:44:38,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:38,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423681588] [2023-12-16 17:44:38,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:44:38,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:38,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:38,084 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:38,087 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 (11)] Waiting until timeout for monitored process [2023-12-16 17:44:38,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-16 17:44:38,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:38,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:44:38,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 212 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-12-16 17:44:38,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 238 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-16 17:44:38,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:38,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423681588] [2023-12-16 17:44:38,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423681588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:38,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:38,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 15 [2023-12-16 17:44:38,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799578631] [2023-12-16 17:44:38,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:38,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 17:44:38,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:38,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 17:44:38,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:44:38,571 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-16 17:44:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:38,734 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2023-12-16 17:44:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 17:44:38,734 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) Word has length 98 [2023-12-16 17:44:38,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:38,735 INFO L225 Difference]: With dead ends: 55 [2023-12-16 17:44:38,735 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 17:44:38,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-16 17:44:38,737 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:38,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 93 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:44:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 17:44:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-16 17:44:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (28), 13 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-16 17:44:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2023-12-16 17:44:38,742 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 98 [2023-12-16 17:44:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:38,743 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2023-12-16 17:44:38,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-16 17:44:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2023-12-16 17:44:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-16 17:44:38,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:38,748 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:38,750 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 (11)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:38,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:38,948 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:38,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:38,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1914823686, now seen corresponding path program 7 times [2023-12-16 17:44:38,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:38,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478178632] [2023-12-16 17:44:38,949 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:44:38,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:38,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:38,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:38,954 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 (12)] Waiting until timeout for monitored process [2023-12-16 17:44:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:44:39,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 17:44:39,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 492 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2023-12-16 17:44:39,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 532 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2023-12-16 17:44:39,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:39,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478178632] [2023-12-16 17:44:39,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478178632] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:39,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:39,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 17 [2023-12-16 17:44:39,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809722584] [2023-12-16 17:44:39,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:39,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:44:39,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:44:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:44:39,681 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2023-12-16 17:44:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:39,905 INFO L93 Difference]: Finished difference Result 119 states and 215 transitions. [2023-12-16 17:44:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 17:44:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) Word has length 161 [2023-12-16 17:44:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:39,906 INFO L225 Difference]: With dead ends: 119 [2023-12-16 17:44:39,906 INFO L226 Difference]: Without dead ends: 70 [2023-12-16 17:44:39,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:44:39,907 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:39,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 122 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:44:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-16 17:44:39,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2023-12-16 17:44:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (33), 15 states have call predecessors, (33), 12 states have call successors, (33) [2023-12-16 17:44:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2023-12-16 17:44:39,914 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 161 [2023-12-16 17:44:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:39,915 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2023-12-16 17:44:39,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2023-12-16 17:44:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2023-12-16 17:44:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-16 17:44:39,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:39,917 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:39,930 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 (12)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:40,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:40,125 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:40,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:40,125 INFO L85 PathProgramCache]: Analyzing trace with hash 409879046, now seen corresponding path program 8 times [2023-12-16 17:44:40,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:40,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253917266] [2023-12-16 17:44:40,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:44:40,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:40,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:40,127 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:40,128 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 (13)] Waiting until timeout for monitored process [2023-12-16 17:44:40,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:44:40,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:40,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:44:40,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1373 refuted. 0 times theorem prover too weak. 5244 trivial. 0 not checked. [2023-12-16 17:44:40,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1430 refuted. 0 times theorem prover too weak. 5187 trivial. 0 not checked. [2023-12-16 17:44:41,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:41,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253917266] [2023-12-16 17:44:41,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253917266] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:41,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:41,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 19 [2023-12-16 17:44:41,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354131647] [2023-12-16 17:44:41,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:41,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:44:41,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:44:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:44:41,220 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-16 17:44:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:41,536 INFO L93 Difference]: Finished difference Result 136 states and 256 transitions. [2023-12-16 17:44:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:44:41,537 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) Word has length 325 [2023-12-16 17:44:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:41,538 INFO L225 Difference]: With dead ends: 136 [2023-12-16 17:44:41,538 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 17:44:41,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2023-12-16 17:44:41,539 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 81 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:41,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 177 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:44:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 17:44:41,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2023-12-16 17:44:41,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 14 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (34), 16 states have call predecessors, (34), 14 states have call successors, (34) [2023-12-16 17:44:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2023-12-16 17:44:41,545 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 325 [2023-12-16 17:44:41,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:41,545 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2023-12-16 17:44:41,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-16 17:44:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2023-12-16 17:44:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-16 17:44:41,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:41,552 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:41,572 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 (13)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:41,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:41,757 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:41,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash 48182618, now seen corresponding path program 9 times [2023-12-16 17:44:41,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:41,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935879133] [2023-12-16 17:44:41,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:44:41,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:41,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:41,760 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:41,786 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 (14)] Waiting until timeout for monitored process [2023-12-16 17:44:41,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-12-16 17:44:41,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:41,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 17:44:42,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2708 refuted. 0 times theorem prover too weak. 15199 trivial. 0 not checked. [2023-12-16 17:44:42,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2785 refuted. 0 times theorem prover too weak. 15122 trivial. 0 not checked. [2023-12-16 17:44:43,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:43,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935879133] [2023-12-16 17:44:43,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935879133] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:43,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:43,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 21 [2023-12-16 17:44:43,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829168333] [2023-12-16 17:44:43,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:43,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 17:44:43,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 17:44:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:44:43,375 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-16 17:44:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:43,733 INFO L93 Difference]: Finished difference Result 152 states and 274 transitions. [2023-12-16 17:44:43,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 17:44:43,733 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) Word has length 527 [2023-12-16 17:44:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:43,734 INFO L225 Difference]: With dead ends: 152 [2023-12-16 17:44:43,735 INFO L226 Difference]: Without dead ends: 90 [2023-12-16 17:44:43,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-12-16 17:44:43,736 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 84 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:43,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 198 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:44:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-16 17:44:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 71. [2023-12-16 17:44:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (31), 17 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-16 17:44:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2023-12-16 17:44:43,744 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 527 [2023-12-16 17:44:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:43,747 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2023-12-16 17:44:43,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-16 17:44:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2023-12-16 17:44:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-12-16 17:44:43,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:43,757 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:43,778 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 (14)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:43,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:43,961 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:43,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash -979193692, now seen corresponding path program 10 times [2023-12-16 17:44:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:43,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296733384] [2023-12-16 17:44:43,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:44:43,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:43,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:43,963 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:43,965 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 (15)] Waiting until timeout for monitored process [2023-12-16 17:44:44,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:44:44,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:44,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:44:44,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4035 refuted. 0 times theorem prover too weak. 27022 trivial. 0 not checked. [2023-12-16 17:44:44,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4135 refuted. 0 times theorem prover too weak. 26922 trivial. 0 not checked. [2023-12-16 17:44:46,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296733384] [2023-12-16 17:44:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296733384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:46,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-16 17:44:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220876762] [2023-12-16 17:44:46,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:46,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 17:44:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 17:44:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:44:46,150 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2023-12-16 17:44:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:46,633 INFO L93 Difference]: Finished difference Result 171 states and 313 transitions. [2023-12-16 17:44:46,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 17:44:46,634 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) Word has length 691 [2023-12-16 17:44:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:46,635 INFO L225 Difference]: With dead ends: 171 [2023-12-16 17:44:46,636 INFO L226 Difference]: Without dead ends: 102 [2023-12-16 17:44:46,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2023-12-16 17:44:46,637 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:46,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 268 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:44:46,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-16 17:44:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 79. [2023-12-16 17:44:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (35), 19 states have call predecessors, (35), 17 states have call successors, (35) [2023-12-16 17:44:46,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-12-16 17:44:46,646 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 691 [2023-12-16 17:44:46,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:46,661 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-12-16 17:44:46,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2023-12-16 17:44:46,661 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-12-16 17:44:46,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2023-12-16 17:44:46,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:46,672 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 143, 88, 88, 88, 88, 88, 88, 55, 34, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:46,692 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 (15)] Ended with exit code 0 [2023-12-16 17:44:46,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:46,893 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:46,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash -111943124, now seen corresponding path program 11 times [2023-12-16 17:44:46,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780604612] [2023-12-16 17:44:46,895 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:44:46,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:46,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:46,908 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:46,925 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 (16)] Waiting until timeout for monitored process [2023-12-16 17:44:50,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 151 check-sat command(s) [2023-12-16 17:44:50,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:50,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:44:51,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 5260 proven. 2530 refuted. 0 times theorem prover too weak. 76151 trivial. 0 not checked. [2023-12-16 17:44:51,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 5260 proven. 2630 refuted. 0 times theorem prover too weak. 76051 trivial. 0 not checked. [2023-12-16 17:44:53,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780604612] [2023-12-16 17:44:53,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780604612] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:53,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:53,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-16 17:44:53,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136321983] [2023-12-16 17:44:53,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:53,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 17:44:53,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:53,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 17:44:53,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:44:53,466 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2023-12-16 17:44:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:53,867 INFO L93 Difference]: Finished difference Result 109 states and 140 transitions. [2023-12-16 17:44:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 17:44:53,868 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) Word has length 1120 [2023-12-16 17:44:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:53,870 INFO L225 Difference]: With dead ends: 109 [2023-12-16 17:44:53,870 INFO L226 Difference]: Without dead ends: 105 [2023-12-16 17:44:53,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2247 GetRequests, 2217 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2023-12-16 17:44:53,870 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 102 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:53,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 263 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:44:53,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-16 17:44:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2023-12-16 17:44:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (35), 19 states have call predecessors, (35), 17 states have call successors, (35) [2023-12-16 17:44:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-12-16 17:44:53,878 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 1120 [2023-12-16 17:44:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:53,879 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-12-16 17:44:53,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2023-12-16 17:44:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-12-16 17:44:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2023-12-16 17:44:53,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:53,906 INFO L195 NwaCegarLoop]: trace histogram [219, 219, 177, 109, 109, 109, 109, 109, 109, 68, 42, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:53,930 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 (16)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:54,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:54,120 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:54,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash -753267258, now seen corresponding path program 12 times [2023-12-16 17:44:54,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:54,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296557399] [2023-12-16 17:44:54,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:44:54,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:54,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:54,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:54,167 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 (17)] Waiting until timeout for monitored process [2023-12-16 17:44:54,478 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2023-12-16 17:44:54,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:54,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:44:54,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 2306 proven. 7267 refuted. 0 times theorem prover too weak. 119145 trivial. 0 not checked. [2023-12-16 17:44:54,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 2306 proven. 7360 refuted. 0 times theorem prover too weak. 119052 trivial. 0 not checked. [2023-12-16 17:44:58,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:58,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296557399] [2023-12-16 17:44:58,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296557399] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:58,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:58,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-16 17:44:58,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649155754] [2023-12-16 17:44:58,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:58,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 17:44:58,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 17:44:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-16 17:44:58,539 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 23 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 23 states have internal predecessors, (59), 18 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) [2023-12-16 17:45:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:00,269 INFO L93 Difference]: Finished difference Result 272 states and 397 transitions. [2023-12-16 17:45:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-16 17:45:00,269 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 23 states have internal predecessors, (59), 18 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) Word has length 1385 [2023-12-16 17:45:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:00,272 INFO L225 Difference]: With dead ends: 272 [2023-12-16 17:45:00,272 INFO L226 Difference]: Without dead ends: 167 [2023-12-16 17:45:00,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2799 GetRequests, 2747 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=745, Invalid=2117, Unknown=0, NotChecked=0, Total=2862 [2023-12-16 17:45:00,274 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 104 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:00,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 101 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:45:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-16 17:45:00,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 95. [2023-12-16 17:45:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 19 states have call successors, (19), 11 states have call predecessors, (19), 14 states have return successors, (56), 23 states have call predecessors, (56), 19 states have call successors, (56) [2023-12-16 17:45:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 139 transitions. [2023-12-16 17:45:00,287 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 139 transitions. Word has length 1385 [2023-12-16 17:45:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:00,288 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 139 transitions. [2023-12-16 17:45:00,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 23 states have internal predecessors, (59), 18 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) [2023-12-16 17:45:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 139 transitions. [2023-12-16 17:45:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1916 [2023-12-16 17:45:00,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:00,305 INFO L195 NwaCegarLoop]: trace histogram [303, 303, 245, 151, 151, 151, 151, 151, 151, 94, 58, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:00,318 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 (17)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:00,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:00,510 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:00,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:00,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1015944830, now seen corresponding path program 13 times [2023-12-16 17:45:00,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:00,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796872209] [2023-12-16 17:45:00,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:45:00,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:00,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:00,513 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:00,528 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 (18)] Waiting until timeout for monitored process [2023-12-16 17:45:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:45:01,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 17:45:01,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 246877 backedges. 1793 proven. 14847 refuted. 0 times theorem prover too weak. 230237 trivial. 0 not checked. [2023-12-16 17:45:01,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 246877 backedges. 1793 proven. 15002 refuted. 0 times theorem prover too weak. 230082 trivial. 0 not checked. [2023-12-16 17:45:06,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:06,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796872209] [2023-12-16 17:45:06,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796872209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:06,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:06,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25] total 27 [2023-12-16 17:45:06,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831727146] [2023-12-16 17:45:06,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:06,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 17:45:06,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:06,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 17:45:06,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2023-12-16 17:45:06,014 INFO L87 Difference]: Start difference. First operand 95 states and 139 transitions. Second operand has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2023-12-16 17:45:06,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:06,632 INFO L93 Difference]: Finished difference Result 256 states and 562 transitions. [2023-12-16 17:45:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 17:45:06,632 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) Word has length 1915 [2023-12-16 17:45:06,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:06,634 INFO L225 Difference]: With dead ends: 256 [2023-12-16 17:45:06,635 INFO L226 Difference]: Without dead ends: 163 [2023-12-16 17:45:06,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3839 GetRequests, 3803 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=1167, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 17:45:06,637 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 145 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:06,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 330 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:45:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-16 17:45:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 104. [2023-12-16 17:45:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 21 states have call successors, (21), 11 states have call predecessors, (21), 16 states have return successors, (49), 26 states have call predecessors, (49), 21 states have call successors, (49) [2023-12-16 17:45:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 137 transitions. [2023-12-16 17:45:06,650 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 137 transitions. Word has length 1915 [2023-12-16 17:45:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:06,650 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 137 transitions. [2023-12-16 17:45:06,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2023-12-16 17:45:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 137 transitions. [2023-12-16 17:45:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2938 [2023-12-16 17:45:06,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:06,690 INFO L195 NwaCegarLoop]: trace histogram [465, 465, 376, 232, 232, 232, 232, 232, 232, 144, 89, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:06,710 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 (18)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:06,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:06,904 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:06,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1900092778, now seen corresponding path program 14 times [2023-12-16 17:45:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069424118] [2023-12-16 17:45:06,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:45:06,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:06,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:06,908 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:06,909 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 (19)] Waiting until timeout for monitored process [2023-12-16 17:45:07,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:45:07,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:07,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 4112 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 17:45:07,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 582408 backedges. 3091 proven. 25120 refuted. 0 times theorem prover too weak. 554197 trivial. 0 not checked. [2023-12-16 17:45:08,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 582408 backedges. 3091 proven. 25307 refuted. 0 times theorem prover too weak. 554010 trivial. 0 not checked. [2023-12-16 17:45:15,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:15,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069424118] [2023-12-16 17:45:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069424118] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:15,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:15,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 27] total 29 [2023-12-16 17:45:15,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883885640] [2023-12-16 17:45:15,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:15,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 17:45:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:15,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 17:45:15,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2023-12-16 17:45:15,137 INFO L87 Difference]: Start difference. First operand 104 states and 137 transitions. Second operand has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 29 states have internal predecessors, (75), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2023-12-16 17:45:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:15,846 INFO L93 Difference]: Finished difference Result 249 states and 508 transitions. [2023-12-16 17:45:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-16 17:45:15,846 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 29 states have internal predecessors, (75), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) Word has length 2937 [2023-12-16 17:45:15,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:15,850 INFO L225 Difference]: With dead ends: 249 [2023-12-16 17:45:15,850 INFO L226 Difference]: Without dead ends: 147 [2023-12-16 17:45:15,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5884 GetRequests, 5845 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 17:45:15,852 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 141 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:15,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 391 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:45:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-16 17:45:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2023-12-16 17:45:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 23 states have call successors, (23), 12 states have call predecessors, (23), 17 states have return successors, (53), 28 states have call predecessors, (53), 23 states have call successors, (53) [2023-12-16 17:45:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2023-12-16 17:45:15,860 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 2937 [2023-12-16 17:45:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:15,862 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2023-12-16 17:45:15,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 29 states have internal predecessors, (75), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2023-12-16 17:45:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2023-12-16 17:45:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4755 [2023-12-16 17:45:16,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:16,021 INFO L195 NwaCegarLoop]: trace histogram [753, 753, 609, 376, 376, 376, 376, 376, 376, 233, 144, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:16,066 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 (19)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:16,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:16,239 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:16,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:16,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2006228766, now seen corresponding path program 15 times [2023-12-16 17:45:16,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:16,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952843838] [2023-12-16 17:45:16,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:45:16,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:16,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:16,261 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:16,280 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 (20)] Waiting until timeout for monitored process [2023-12-16 17:45:17,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2023-12-16 17:45:17,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:17,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-16 17:45:17,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1529148 backedges. 5156 proven. 44844 refuted. 0 times theorem prover too weak. 1479148 trivial. 0 not checked. [2023-12-16 17:45:17,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:45:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1529148 backedges. 5156 proven. 45066 refuted. 0 times theorem prover too weak. 1478926 trivial. 0 not checked. [2023-12-16 17:45:26,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:45:26,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952843838] [2023-12-16 17:45:26,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952843838] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:45:26,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:45:26,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 29] total 31 [2023-12-16 17:45:26,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067906225] [2023-12-16 17:45:26,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:45:26,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 17:45:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:45:26,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 17:45:26,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2023-12-16 17:45:26,655 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 31 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 31 states have internal predecessors, (80), 28 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 14 states have call predecessors, (40), 28 states have call successors, (40) [2023-12-16 17:45:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:45:27,556 INFO L93 Difference]: Finished difference Result 269 states and 564 transitions. [2023-12-16 17:45:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 17:45:27,557 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 31 states have internal predecessors, (80), 28 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 14 states have call predecessors, (40), 28 states have call successors, (40) Word has length 4754 [2023-12-16 17:45:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:45:27,561 INFO L225 Difference]: With dead ends: 269 [2023-12-16 17:45:27,561 INFO L226 Difference]: Without dead ends: 159 [2023-12-16 17:45:27,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9519 GetRequests, 9477 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 17:45:27,562 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 259 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:45:27,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 468 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 17:45:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-16 17:45:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 120. [2023-12-16 17:45:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 25 states have call successors, (25), 13 states have call predecessors, (25), 18 states have return successors, (57), 30 states have call predecessors, (57), 25 states have call successors, (57) [2023-12-16 17:45:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2023-12-16 17:45:27,584 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 4754 [2023-12-16 17:45:27,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:45:27,586 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2023-12-16 17:45:27,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 31 states have internal predecessors, (80), 28 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 14 states have call predecessors, (40), 28 states have call successors, (40) [2023-12-16 17:45:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2023-12-16 17:45:28,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9512 [2023-12-16 17:45:28,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:45:28,112 INFO L195 NwaCegarLoop]: trace histogram [1507, 1507, 1219, 753, 753, 753, 753, 753, 753, 466, 288, 1, 1, 1, 1, 1, 1] [2023-12-16 17:45:28,120 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 (20)] Forceful destruction successful, exit code 0 [2023-12-16 17:45:28,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:28,318 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:45:28,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:45:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1014541182, now seen corresponding path program 16 times [2023-12-16 17:45:28,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:45:28,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763488203] [2023-12-16 17:45:28,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:45:28,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:28,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:45:28,325 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:45:28,326 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 (21)] Waiting until timeout for monitored process [2023-12-16 17:45:31,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:45:31,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:45:31,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 13291 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 17:45:31,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:45:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6130839 backedges. 9246 proven. 99528 refuted. 0 times theorem prover too weak. 6022065 trivial. 0 not checked. [2023-12-16 17:45:32,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 17:45:41,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:45:41,499 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 (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:45:41,500 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:45:41,584 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 (21)] Ended with exit code 0 [2023-12-16 17:45:41,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:45:41,700 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 9512 with TraceHistMax 1507,while TraceCheckSpWp was constructing backward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. [2023-12-16 17:45:41,704 INFO L445 BasicCegarLoop]: Path program histogram: [16, 2, 1, 1] [2023-12-16 17:45:41,705 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:45:41,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:45:41 BoogieIcfgContainer [2023-12-16 17:45:41,707 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:45:41,707 INFO L158 Benchmark]: Toolchain (without parser) took 71566.26ms. Allocated memory was 400.6MB in the beginning and 1.2GB in the end (delta: 800.1MB). Free memory was 346.5MB in the beginning and 886.9MB in the end (delta: -540.4MB). Peak memory consumption was 261.2MB. Max. memory is 8.0GB. [2023-12-16 17:45:41,707 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 226.5MB. Free memory is still 175.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:45:41,707 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.31ms. Allocated memory is still 400.6MB. Free memory was 346.2MB in the beginning and 335.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 17:45:41,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.36ms. Allocated memory is still 400.6MB. Free memory was 335.4MB in the beginning and 334.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:45:41,708 INFO L158 Benchmark]: Boogie Preprocessor took 45.84ms. Allocated memory is still 400.6MB. Free memory was 334.0MB in the beginning and 332.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:45:41,710 INFO L158 Benchmark]: RCFGBuilder took 293.94ms. Allocated memory is still 400.6MB. Free memory was 332.3MB in the beginning and 321.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 17:45:41,710 INFO L158 Benchmark]: TraceAbstraction took 71020.37ms. Allocated memory was 400.6MB in the beginning and 1.2GB in the end (delta: 800.1MB). Free memory was 320.8MB in the beginning and 886.9MB in the end (delta: -566.1MB). Peak memory consumption was 235.0MB. Max. memory is 8.0GB. [2023-12-16 17:45:41,713 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 226.5MB. Free memory is still 175.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 168.31ms. Allocated memory is still 400.6MB. Free memory was 346.2MB in the beginning and 335.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.36ms. Allocated memory is still 400.6MB. Free memory was 335.4MB in the beginning and 334.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.84ms. Allocated memory is still 400.6MB. Free memory was 334.0MB in the beginning and 332.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 293.94ms. Allocated memory is still 400.6MB. Free memory was 332.3MB in the beginning and 321.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 71020.37ms. Allocated memory was 400.6MB in the beginning and 1.2GB in the end (delta: 800.1MB). Free memory was 320.8MB in the beginning and 886.9MB in the end (delta: -566.1MB). Peak memory consumption was 235.0MB. 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: 29]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 29). Cancelled while NwaCegarLoop was analyzing trace of length 9512 with TraceHistMax 1507,while TraceCheckSpWp was constructing backward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 71.0s, OverallIterations: 20, TraceHistogramMax: 1507, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.8s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1485 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1286 mSDsluCounter, 2888 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2417 mSDsCounter, 1934 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8718 IncrementalHoareTripleChecker+Invalid, 10652 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1934 mSolverCounterUnsat, 471 mSDtfsCounter, 8718 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28786 GetRequests, 28352 SyntacticMatches, 7 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=19, InterpolantAutomatonStates: 286, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 331 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 37.2s InterpolantComputationTime, 14347 NumberOfCodeBlocks, 8472 NumberOfCodeBlocksAsserted, 317 NumberOfCheckSat, 28639 ConstructedInterpolants, 0 QuantifiedInterpolants, 33896 SizeOfPredicates, 117 NumberOfNonLiveVariables, 12035 ConjunctsInSsa, 271 ConjunctsInUnsatCore, 36 InterpolantComputations, 2 PerfectInterpolantSequences, 5055077/5264032 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